Section 1511 through Section 1525
Section
1512 through Section 1525
Deletion legend:
[1- Default – Not related
to structural wind resistance design]
[2- Fire/Life Safety]
[3- Covered in model base
code]
SECTION 1512
HIGH-VELOCITY HURRICANE ZONES-GENERAL
1512.1 Scope. Sections 1512 through 1525 set forth minimum requirements for the installation of roofing components, roofing systems, roofing assemblies and the waterproofing thereof.
1512.2 Application. These high-velocity hurricane zone roofing requirements with associated roofing application standards (RAS) and testing application standards are solely to be implemented in areas of high basic wind speeds, and where the jurisdiction having authority has adopted their use.
1512.2.1 All roofing components, roofing systems and roofing assemblies for construction regulated by this code shall comply with this chapter. All roofing components, roofing systems and roofing assemblies shall have a valid and current Product Approval. In the event that the manufacturers published literature or instructions are in conflict with those of the Product Approval, the Product Approval shall prevail. Where items specifically and expressly addressed in this chapter are in conflict with the Product Approval, the provisions of this chapter shall prevail.
1512.2.2 Innovative products and/or systems outside those currently recognized under this chapter may have a product approval issued based on performance testing; in such case(s) the conditions set in the Product Approval shall prevail.
1512.2.3 For roofing systems to be installed on a specific building or structure, where an existing Product Approval may not be applied, such roofing system may be granted a onetime approval by the authority having jurisdiction, provided the applicant demonstrates, by testing and/or rational analysis that such roofing system complies with the provision of this code.
1512.2.4 Where a Product Approval does not address a detail for a specific job condition, the permit applicant may propose to the building official an alternate detail to address the specific need of the job. The building official may accept such proposal if it can be demonstrated that the provisions of this code will be met.
1512.2.5 Workmanship standards. All roofing work shall be performed by a qualified contractor licensed to perform roofing, in compliance with the tolerances, quality and methods of construction established herein or set forth in the standards adopted by these high-velocity hurricane zone requirements. Roofing assemblies detailed in the Product Approval shall be installed in strict compliance with the method of application set forth in such Product Approval or, if not part of the Product Approval, in compliance with manufacturer's published application instructions, or as approved by the building official. (Aesthetic issues not affecting the performance of the roof are not part of this chapter.)
1512.2.5.1 Appearance. If the architectural appearance is to be preserved from below, an alternate method of attachment complying with the windload requirements of Chapter 16 (High-Velocity Hurricane Zones) may be proposed unless otherwise addressed in Chapter 15. The alternative attachment shall be prepared, signed and sealed by a Florida-registered architect or a Florida-registered engineer, which architect or engineer shall be proficient in structural design.
1512.3 Permits outside these high-velocity hurricane zone requirements shall comply with Section 105. Permits within high wind areas shall be required for all work in connection with the application, repair or maintenance of any roofing component or any roofing assembly and/or any of its components except as otherwise permitted in Section 105 of this code.
1512.3.1 All new roofing construction, including recovering and reroofing, repair or maintenance shall have a uniform roofing permit application, as established by the authority having jurisdiction, completed and executed by a licensed contractor.
1512.3.2 The uniform roofing permit shall include calculations per Chapter 16 (High-Velocity Hurricane Zone) of this code, unless the roofing assembly is less than the height/pressure threshold allowed in the applicable protocols herein.
1512.3.3 Reserved.
1512.3.4 Attachments to the uniform roofing permit application shall include two copies of each of the following documents: properly executed OWNERS NOTIFICATION FOR ROOFING CONSIDERATIONS herein; the fire directory listing pages, Product Approval, and applicable detail drawings; the municipal permit application; other components approvals; and any other additional data reasonably required by the authority having jurisdiction needed to determine the integrity of the roofing system.
1512.3.5 In new construction, a licensed roofing
contractor may dry-in the wood deck (no mopping) on a specific structure, prior
to the roofing permit being issued provided: [1- Default
– Not related to structural wind resistance design]
1512.3.5.1 The master building permit for that specific
structure has been obtained; [1- Default – Not related
to structural wind resistance design]
1512.3.5.2 The sheathing inspection has been made and
approved by the building official; and [1- Default – Not related
to structural wind resistance design]
1512.3.5.3 The required roofing permit application is
submitted to the building official within 10 days after dry-in work is started
and the slope of the roof deck is 2:12 or greater. [1- Default
– Not related to structural wind resistance design]
1512.4 Inspections performed outside these high-velocity
hurricane zone requirements shall comply with Section 109.
[1- Default
– Not related to structural wind resistance design]
1512.4.1 All roofing work for which a permit is required shall be inspected by the building official. One or more inspections may be performed at the same time at the request of the roofing contractor or when feasible. Lack of roofing contractor's personnel at the job site, in and of itself, shall not be cause to fail the inspection. Certain roofing inspections shall be performed during specific phases of the applications as noted below:
1512.4.2 For discontinuous roofing systems (as defined herein or Chapter 2):
1512.4.2.1 During or after application of the base sheet, anchor sheet or underlayment of any roofing system.
1512.4.2.2 During the installation of the cap sheet.
1512.4.2.3 During the installation of any prepared roof covering, such as shingles, tiles, slates, shakes and similar.
1512.4.2.4 Upon completion of all adhesive-set and mortar-set tile systems, and prior to the final inspection, a field verification and static uplift test, in compliance with TAS 106 shall be required to confirm tile adhesion to the underlayment. This test may be required by the building official for mechanically attached tile systems. All results of this test shall be submitted to the building official.
1512.4.3 For continuous roofing systems (as defined in herein or Chapter 2):
1512.4.3.1 During application of any roofing system prior to the full concealment of the adhesion/attachment process to the roof deck or to the existing roofing assembly.
1512.4.3.2 In cases where a roof area is less than 1,500 square feet (139 m2), and when the building official is not able to perform any of the above requested inspection in a timely manner, the building official may authorize to continue with the work and may require that satisfactory evidence be provided to show that the covered work was performed in compliance with this code.
1512.4.3.3 After all roofing work has been completed, a final inspection shall be performed by the building official.
SECTION 1513
HIGH-VELOCITY HURRICANE ZONES-DEFINITIONS
1513.1 Definitions. For definitions outside Sections 1512 through 1525 and accompanied RAS and TAS, see Chapter 2. For the purposes of Sections 1512 through 1525, accompanying RAS, TAS and roofing Products Approval, roofing terms shall be defined in compliance with ASTM D 1079, unless otherwise defined below. The definitions listed below shall take preference. Other terms used herein shall be defined as set forth in Chapter 2 of this code.
AIR PERMEABLE ROOFING SYSTEM. A roofing system consisting of a prepared roof covering over an approved underlayment on a sloped roof. The components within the prepared roof covering are discontinuously laid and small, with unsealed side and head laps. Air permeable roofing systems shall be applied over sheathed decks with either mechanical attachment or a mortar/adhesive bond. Any roofing system with sealed side or head laps shall not be defined as an air permeable roofing system. The authority having jurisdiction may require testing in compliance with TAS 116, to determine whether a roofing system is air permeable.
ANCHOR SHEET. A roofing felt mechanically attached to a nailable deck with approved fasteners to which insulation is then installed in a solid mopping of asphalt. The roofing membrane is then installed to the insulation in the usual manner.
ARCHITECTURAL METAL PANEL. Water shedding (hydrokinetic) roof panel fastened to a roof deck.
ASTM (ASTM International). A scientific and technical organization that is responsible for the development of standards on characteristics and performance of materials, products, systems, as adopted for the high-velocity hurricane zone.
NET FREE VENTILATING AREA (NFVA). The gross area of the smallest plane area of the ventilating device reduced by the percentage of physical obstruction to the plane area.
BASE SHEET. The bottom or first ply of a roofing assembly over which subsequent roofing plies are applied. A base sheet may be designed for mechanical attachment, full or partial adhesion to the substrate.
Building Integrated Photovoltaic
Roofing. A roofing product consisting of electricity
generating photovoltaic component integrated into a roof covering.
"CLASS A" ROOFING ASSEMBLY. A roofing assembly that, in combination with the roof slope, has been classified by an approved testing agency, with a listing and follow-up service, as "Class A" in compliance with ASTM E 108 or UL 790.
"CLASS B" ROOFING ASSEMBLY. A roofing assembly that, in combination with the roof slope, has been classified by an approved testing agency, with a listing and follow-up service, as "Class B" in compliance with ASTM E 108 or UL 790.
"CLASS C" ROOFING ASSEMBLY. A roofing assembly that, in combination with the roof slope, has been classified by an approved testing agency, with a listing and follow-up service, as "Class C" in compliance with ASTM E 108 or UL 790.
CONTINUOUS ROOFING SYSTEM. An impervious roof covering, composed from a single or multiple layers, forming a homogenous membrane over the entire roof surface, applied to either a flat or pitched roof surfaces.
CORROSION RESISTANT. Any component that passes appendix of FMRC's Test Standard 4470, as modified, and set forth in TAS 114.
COUNTER BATTENS. Vertical wood strips installed on sloped roofs over which horizontal battens are secured. The primary roof covering is attached or secured to these horizontal battens.
COUNTERFLASHING. Formed metal or elastomeric sheeting secured on or into a wall, curb, pipe, roof-top unit or other surface to cover and protect the upper edge of a base flashing and its associated fasteners.
DISCONTINUOUS ROOFING SYSTEM. A roofing system with unsealed overlapping components, where the combined roofing system has openings at the point of overlap, applied to a sloped surface with a pitch of 2:12, or greater. Discontinuous roofing systems include asphalt shingles; concrete, clay or metal tile; wood shingles or shakes; and cement fiber roofing systems.
DRY-IN. The process of applying the first layer of felt in a roofing system.
FMRC (Factory Mutual Research Corporation). A research and testing organization that is responsible for examination and testing of construction and other products on behalf of member insurance companies.
FASTENER WITHDRAWAL RESISTANCE TEST. A static pullout test of mechanical fasteners, which are used to anchor any roofing component, to determine the force required to withdraw a fastener from the substrate. Testing shall be in compliance with the test procedure detailed in TAS 105.
FIRE-RESISTANT ROOF COVERING. Any Class A, Class B or Class C roofing system applied to the appropriate deck type within the specified slope of the listed classification.
FLASHING. The roofing component used to seal roofing systems, where the system is interrupted or terminated.
LAP. See NRCA Manual, 4th edition.
METAL PROFILE. Including but not limited to eave and gable drip, gravel stop, raised edge systems and fascia systems. All composite and nonmetallic flashing materials shall have a Product Approval.
MINIMUM CHARACTERISTIC RESISTANCE FORCE. A force or pressure which is representative of data from withdrawal resistance testing; static uplift testing; and/or wind uplift testing after the data has been statistically analyzed to a 95-percent level of precision.
METAL ROOF PANEL. An interlocking metal sheet having an installed weather exposure equal or greater than three square feet per sheet.
METAL ROOF SHINGLE. An interlocking metal sheet having an installed weather exposure less than 3 square feet (.3 m2) per sheet.
MOMENT. A quantity that represents the affect of a force applied at a particular point in relation to a specific point or axis.
NRCA. The NRCA Roofing and Waterproofing Manual , 5th edition, as published by the National Roofing Contractors Association.
PREPARED ROOF COVERING. Any manufactured or processed roof covering designed for use as the top layer of a discontinuous roofing system applied to a sloped roof.
RAS. Roofing Application Standards.
RECOVERING. The process of covering an existing roofing assembly with a new roofing system or a prepared roofing system.
REPAIR. The work of corrective procedures by replacing or altering an existing roofing component or system to eliminate water intrusion.
REROOFING. The process of recovering or replacing an existing roofing system, either in its entirety or in existing sections.
RIDGE VENT. A ventilator located within 18 inches (457 mm) of the ridge that allows the escape of warm and/or moist air from the attic area or rafter cavity.
ROOFING ACCESSORY. A type of roofing product as described in Section 1517.6 of this code.
ROOFING ASSEMBLY. An assembly of interacting roofing components [includes the roof deck, vapor retarder (if present), insulation, and roof covering].
ROOFING COATINGS, ADHESIVES AND MASTICS. Any and all liquid materials applied to the roofing membrane layer to enhance ultraviolet light resistance; increase resistance to fire; increase reflectivity of the roofing assembly; or, in some way, enhance the performance of the roofing assembly. Roofing coatings, adhesives or mastics shall not contain asbestos materials.
ROOF COVERING. An assembly of multiple field-applied components or a single component designed to weatherproof a building's top surface. A roof covering may be a roofing assembly or form a portion thereof.
ROOFING COMPONENT. A roofing product that is incorporated into various roofing assemblies.
ROOF DECK. Solid or spaced sheathing to which the roofing or waterproofing system is applied.
ROOFING MAINTENANCE. Is the work of extending the longevity of a roofing system through preventative care, such as refilling pitch pans, applying coatings, re-graveling, resurfacing and re-caulking.
ROOF SECTION. A separation or division of a roof area by existing expansion joints, parapet walls, flashing (excluding valleys), difference of elevation (excluding hips and ridges), roof type or legal description; not including the roof area required for a proper tie-off with an existing system.
ROOFING SYSTEM. A system of interacting roofing components, generally consisting of membrane or primary roof covering and insulation (not including the roof deck) designed to weatherproof, and sometimes to improve, the building's thermal resistance.
HIGH ROOF TILE PROFILE. Those tiles having a rise-to-width ratio greater than 0.20.
LOW ROOF TILE PROFILE. Those tiles having a rise-to-width ratio less or equal than 0.20; except those tiles meeting the flat profile definition.
FLAT ROOF TILE PROFILE. Those tiles with less than 1/2-inch (12.7 mm) rise.
STRUCTURAL METAL PANEL. Roof covering intended to be self-supporting between structural members (see Sections 2003.8.2 and 2222.4).
TAS. Testing
Application Standard.
UNDERLAYMENT. One or more water-shedding layers applied to a sloped roof prior to the application of a prepared roof covering. The primary purpose of an underlayment is defined as a water shedding layer to function in combination with a prepared roof covering.
WOOD SHAKES. Tapered or straight pieces of red cedar, or other wood types, of widths ranging from 3 inches to 14 inches (76 mm to 356 mm) ranging in lengths from 18 inches to 32 inches (457 mm to 813 mm) applied to a sloped roof, in conjunction with an approved underlayment, forming a discontinuous prepared roof system.
WOOD SHINGLES. Tapered pieces of red cedar, or other wood types, sawn on both faces, of widths ranging from 3 inches to 14 inches (356 mm) and lengths of 16 inches (406 mm), 18 inches (457 mm), and 24 inches (610 mm) applied to a sloped roof forming a discontinuous prepared roof system.
SECTION 1514
HIGH-VELOCITY HURRICANE ZONES-WEATHER PROTECTION
1514.1 General. Roof decks shall be covered with roof coverings secured to the building or structure in accordance with the provisions of this chapter. Roof coverings shall be designed, installed and maintained in accordance with this code and the manufacturer's installation instructions such that the roof covering shall serve to protect the building or structure. All roof coverings, roof systems and roof assemblies shall be designed and installed to resist the windload requirements of Chapter 16 (High-Velocity Hurricane Zones) of this code.
1514.2 Flashings.
Flashings shall be installed in such a manner as to prevent moisture
entering the wall through the joints in the coping, through moisture permeable
materials, at intersections with the roof plane or at parapet wall
penetrations. All roof flashing and terminations shall be designed and
installed to resist the windload requirements of Chapter 16 (High-Velocity
Hurricane Zone) of this code, and shall be in compliance with the provisions
set forth in RAS 111. [1- Default – Not related
to structural wind resistance design]
1514.2.1 Locations.
Flashings shall be installed at (1) wall and roof intersections, (2) at
gutters, (3) wherever there is a change in roof slope or direction, this
requirement does not apply to the hip and ridge junctions, and (4) around roof
openings. Where flashing is of metal, the metal shall conform with the
provisions of RAS 111. [1- Default – Not related
to structural wind resistance design]
1514.2.2 Membrane flashings. All membrane flashing shall be installed according to the roof assembly manufacturer's published literature and in accordance with the provisions set forth in RAS 111.
1514.2.3 Metal
flashings and terminations. Metal flashing and terminations shall be of the
material and thickness described in Section 1517.6 and RAS 111 of this code,
and shall be designed and installed in accordance with RAS 111. Metal
flashing shall be installed after the roofing felts have been laid and turned
up the vertical surfaces, in compliance with the roofing assembly Product
Approval. [1- Default – Not related to structural wind resistance
design]
1514.2.3.1 Such felts shall be embedded in hot bitumen or an approved adhesive.
1514.2.3.2 Metal surfaces shall be primed with an ASTM D 41 or ASTM D 43 primer, as appropriate and allowed to dry prior to receiving hot bitumen or cold adhesive.
1514.2.4 Metal counterflashing. Metal counterflashing shall be of the material and thickness described in Section 1517.6 and RAS 111 of this code, and shall be installed in accordance with RAS 111.
1514.2.4.1 Metal counterflashing shall be built into walls, set in reglets or applied as stucco type and shall be turned down over base flashing not less than 3 inches (76 mm).
1514.2.4.2 Metal counterflashing shall be side lapped a minimum of 4 inches (102 mm).
1514.2.4.3 Metal counterflashing, where set in reglets or surface-mounted, shall be waterproofed, in accordance with applicable application standards.
1514.2.4.4 Where metal counterflashing is used as the means of sealing (such as a vented system) it shall be set in an approved sealant, sealed with an approved adhesive on the top flange and all joints shall be sealed with an approved sealant and lapped a minimum of 4 inches (102 mm).
1514.2.5 Roof
penetration flashing.
1514.2.5.1 All pipes shall be flashed with approved lead sleeve-type, pitch pans or other approved methods detailed in the roofing system assembly Product Approval. Lead flashing shall not be less than 2.5 pounds per square foot (12.2 kg/m2). Flanges shall be a minimum of 4 inches (102 mm).
1514.2.5.2 Other roof penetrations shall be suitably flashed with curbs, collars, pitch pans, in compliance with RAS 111 or an approved method, in compliance with the roofing system assembly Product Approval.
1514.2.5.3 No roof penetration shall be located in roof valleys.
1514.3 Coping. Where
required, parapet walls shall be properly coped with noncombustible,
weatherproof materials of a width no less than the thickness of the parapet
wall. Copings shall be designed and installed to resist the windload requirements
of Chapter 16 (High-Velocity Hurricane Zones) of this code, and shall be in
accordance with the provisions set forth in RAS 111. [1- Default
– Not related to structural wind resistance design]
1514.4 Roof drainage. Unless roofs are sloped to drain over roof edges, roof drains shall be installed at each low point of the roof. Where required for roof drainage, scuppers shall be placed level with the roof surface in a wall or parapet. The scupper shall be located as determined by the roof slope and contributing roof area. Scuppers shall be sized in accordance with the provisions contained in ASCE 7, Section 8 with commentary and shall comply with Section 1617 herein.
1514.4.1 Gutters. Gutters and leaders placed on the
outside of buildings, other than one- or two-family dwellings, private garages
and buildings of Type II-B construction, shall be of noncombustible material or
a minimum of Schedule 40 plastic pipe. [1- Default – Not related
to structural wind resistance design]
1514.4.1.1 Gutters
and leaders shall be constructed of metal or approved plastic for outdoor
exposure with lapped, soldered or caulked joints and shall be securely fastened
to the building with a corrosion resistant fastening device of similar or
compatible material to the gutters and downspouts. Gutters shall be in
compliance with RAS 111. [1- Default – Not related
to structural wind resistance design]
1514.4.2 Overflow drains and scuppers. Where roof drains are required, overflow drains or overflow scuppers sized in accordance with Florida Building Code, Plumbing shall be installed with the inlet flow line located not less than 2 inches (51 mm) or more than 4 inches (102 mm) above the low point of the finished roofing surface, excluding sumps. Overflow scuppers shall be a minimum of 4 inches (102 mm) in any dimension and shall be located as close as practical to required vertical leaders, conductors or downspouts. Overflow drains and scuppers shall also comply with the Florida Building Code, Plumbing, and Section 1617 of this code.
1514.4.2.1 When overflow scuppers and roof drains are installed, they shall be lined with approved metal or other approved materials set forth in the roofing system assembly Product Approval.
1514.4.2.2 When recovering, reroofing or repairing an existing roof, the existing number of scuppers and/or roof drains shall not be reduced, unless a new drainage system is designed by an architect or engineer, in compliance with the provisions of this code.
1514.4.3 Sizing and discharge. Roof drains, gutters, conductors and leaders shall be sized and discharge in accordance with the Florida Building Code, Plumbing .
SECTION 1515
HIGH-VELOCITY HURRICANE ZONES-PERFORMANCE REQUIREMENTS
1515.1 General. All roof assemblies, roof coverings and roof systems shall have Product Approval, and shall meet the following minimum requirements.
1515.1.1 All continuous roofing assemblies shall be tested in compliance with FMRC Test Standards 4470 and/or 4471 (for metal roofing), as modified for the purposes of this code and set forth in TAS 114. Only those components listed within the roofing assembly Product Approval shall be approved for use with the roof covering. Roofing assemblies shall be acceptable for use in this code's jurisdiction providing they are in compliance with the fire classification required for the structure to which the roofing assembly is to be installed.
1515.1.2 All fastening devices and fastening assemblies used for insulation, anchor sheet or roof coverings shall be tested in compliance with Section 1523 of this code.
1515.1.3 All roofing assemblies shall be tested by a testing laboratory, certified by the certification agency in accordance with TAS 301, to confirm compliance with the fire classification and other sections of this code.
1515.1.4 All roofing membranes and components shall be tested in compliance with the physical property test requirements detailed in TAS 110.
1515.1.5 No loose laid ballasted or non-ballasted system shall be allowed.
1515.2 Guidelines for
roofing applications.
1515.2.1 Decks. All roofing systems and prepared roof coverings shall be installed over solid decks, unless otherwise specifically allowed in other sections of this code.
1515.2.2 Minimum slope. All roofing assemblies must be installed in compliance with the slope requirements specified in the product control approval, in compliance with Table 1515.2.
1515.2 Guidelines for roofing applications. Change
to read as shown.
TABLE 1515.2
MINIMUM SLOPE
|
SYSTEM
TYPE |
SLOPE
|
|
Fibrous
Cement Shingles |
4:12 |
|
Metal
Panels |
|
|
Architectural |
2:12 |
|
Metal Shingles |
4:12 |
|
Mortar
or Adhesive Tile |
2:12 |
|
Mechanically
Fastened Tile |
4:12 |
|
Asphalt
Shingles |
|
|
Laminated |
2:12 |
|
3-Tab |
2:12 |
|
Quarry
Slate |
3-1/2:12 |
|
Wood |
|
|
Shakes |
4:12 |
|
Shingles |
3-1/2:12 |
1515.2.2.1 All roofing systems must be installed to
ensure positive drainage. In new construction the minimum deck slope shall be
not less than 1/4:12. [1- Default – Not related
to structural wind resistance design]
1515.2.2.2 All roofing assemblies shall be installed at a
slope no greater than the maximum allowed for the required fire classification.
[1- Default – Not related to structural wind
resistance design]
1515.2.3 Deck preparation. All roof decks, substrates,
existing roofing systems to which a new roofing assembly is to be installed
shall be broom cleaned, free from dirt and silt and dry prior to commencement
of the roofing application. [1- Default – Not related
to structural wind resistance design]
1515.2.3.1 Cant strips, if required, shall be extended
not less than 3-inch (76 mm) up vertical flashing surfaces, measured from the
top of the new roof covering. [1- Default – Not related
to structural wind resistance design]
1515.2.3.2 All eaves shall provide a firm nailable substrate for secure attachment of perimeter edge metal in compliance with RAS 111.
1515.2.3.3 Perimeter edge metal shall be fastened with nails or fasteners fabricated from similar or compatible material. The nails or fasteners shall be as set forth in the roofing assembly Product Approval.
1515.2.3.4 All precast and prestressed concrete deck
components shall be leveled with leveling fill, where such components' edges
are greater than 1/2 inch (12.7 mm) from being flush. [1- Default
– Not related to structural wind resistance design]
1515.2.4 Impact resistance. Roof coverings installed on low slope roofs in accordance with Section 1519 shall resist impact damage based on the results of test conducted in accordance with ASTM D 3746, ASTM D 4272, CGSB 37, FM 4470 or TAS 114.
1515.2.5 Ridge vents. Ridge vents shall have a Product Approval, and shall be tested for wind driven rain in accordance with TAS 110 and Section 1523.
SECTION 1516
HIGH-VELOCITY HURRICANE ZONES-FIRE CLASSIFICATION
1516.1 General. Roof assemblies shall be divided into the
classes defined below. Class A, B and C roof assemblies and roof coverings
required to be listed by this section shall be tested in accordance with ASTM E
108 or UL 790. In addition, fire retardant treated wood roof coverings shall be
tested in accordance with ASTM D 2898.
1516.2 Fire resistant roofing assemblies and coverings
shall be provided on all structures. Fire classification of roofing assemblies
and coverings shall be based on the exposure hazard as follows:
1516.2.1 Class A. Zero feet to 20 feet (0 to 6.1 m)
distance separation measured horizontally from the closest point of any
building edge to the nearest point to an adjoining structure, and all buildings
with occupation greater than 300 persons.
Exception: Brick, masonry, slate, clay or concrete roof
tile and exposed concrete roof deck are considered to meet Class A roof
covering provisions without testing.
1516.2.2 Class B. All other structures, except as noted
below
1516.2.3 Class C. Structures not occupied by humans.
[2- Fire/Life Safety]
SECTION 1517
HIGH-VELOCITY HURRICANE ZONES-MATERIALS
1517.1 Scope. Every roofing component shall comply with the applicable ASTM material standards adopted by this code. All such products shall bear the testing logo imprinted on the material and/or container or shall be marked in a distinctive manner to define compliance with the standards and shall be subject to be evaluated for compliance. The certification agency shall carry out random testing of labeled products to confirm compliance with ASTM material standard.
1517.2 Compatibility of materials. Roofs and roof coverings
shall be of materials that are compatible with each other and with the building
or structure to which the materials are applied. [1- Default
– Not related to structural wind resistance design]
1517.3 Material specification and physical characteristics.
No roofing component containing asbestos shall be used in any roofing assembly.
[1- Default – Not related to structural wind
resistance design]
1517.4 Product identification. All roofing components shall be labeled and/or identified as mandated by the Product Approval.
1517.4.1 ASTM standard roll goods shall be marked with a yellow line to identify the ASTM standard, or such other marking as may be deemed appropriate by the Product Approval.
1517.5 Fasteners.
1517.5.1 Nails shall be minimum 12 gage, annular ring shank nails having not less than 20 rings per inch, heads not less than 3/8 inch (9.5 mm) in diameter; and lengths sufficient to penetrate through the thickness of plywood panel or wood plank decking not less than 3/16 inch (4.8 mm), or to penetrate into a 1 inch (25 mm) or greater thickness of lumber not less than 1 inch. Nails or wood screws shall be hot dipped electro or mechanically galvanized to a thickness sufficient to resist corrosion in compliance with TAS 114, Appendix E, Section 2 (ASTM G 85). All nails shall be listed by a certification agency. All nail cartons or carton labels shall be labeled to note compliance with the corrosion resistance requirements. No roofing material shall be fully or partially adhered directly to a nailable deck, unless otherwise noted in the roof assembly Product Approval.
1517.5.2 Such
fasteners shall be applied through "Tin caps" no less than 1_5/8 inches (41 mm) and not more than 2 inches
(51 mm) in diameter and of not less than 32 gage (0.010 inch) sheet metal.
"Cap nails" or prefabricated fasteners with integral heads complying
with this section shall be an acceptable substitute. All "tin caps,"
"cap nails" or prefabricated fasteners with integral heads shall be tested
for corrosion resistance in compliance with TAS 114 Appendix E, Section 2 (ASTM
G 85), and shall be product control listed. All of cartons or carton labels
"tin caps," "cap nails" or prefabricated fasteners with
integral heads shall be labeled to note compliance with the corrosion resistance
requirements.
1517.6 Metal roofing accessories. All metal accessories for roofs shall be not less than 26 gage G-90 galvanized or stainless steel, 16 ounce copper, 0.025-inch (0.6 mm) thick aluminum, lead sheet with a minimum 2.5 lb/sf (12.2 kg/m2) or equivalent noncorrosive metal alloys or composite materials manufactured for use as roof termination. All composite and nonmetallic flashing materials shall have a Product Approval.
1517.6.1 Metal accessories may be of a manufactured, shop-fabricated or field-fabricated type, providing the materials and fasteners are in compliance with the minimum requirements of this code and shall be sized, designed and installed in compliance with methods set forth in RAS 111.
1517.6.2 Gravel stop or drip edge profiles shall be as follows:
1517.6.2.1 The vertical face shall be a minimum of 11/2 inches (38 mm) and shall extend down not less than 1/2 inch (12.7 mm) below the sheathing or other member immediately contiguous thereto. In all cases, the deck flange shall be not less than 2 inches (51 mm) in width. Gravel stop or drip edge shall be sized, designed and installed in compliance with RAS 111.
1517.6.2.2 Gravel stop or drip edge shall be designed so that the bottom (the kick of the metal) of the drip edge shall have a minimum of 1/2-inch (12.7 mm) clearance from the structure.
1517.6.2.3 Reserved.
1517.6.2.4 Gravel stops shall be installed after all roofing felts have been applied, or in compliance with the application method set forth in the roofing assembly Product Approval. All asphalt or approved cold adhesive bonding areas shall be coated with ASTM D 41 or ASTM D 43, as required, and allowed to dry prior to application.
1517.6.2.5 Gravel stops and drip edges shall be joined by lapping a minimum of 4 inches (102 mm) and the entire interior of the joints shall be coated with approved flashing cement. Cover and splice plates shall be of the same material as the gravel stop and drip edge, and shall be sized, fabricated and installed in compliance with RAS 111.
1517.6.2.6 The deck flange shall be nailed with an approved minimum 12 gage annular ring shank nail at 4 inches (102 mm) o.c. The nail shall be manufactured from similar and/or compatible material to the termination profile. All composite materials shall be fastened with nonferrous nails.
1517.6.3 Valley metal. Valley metal shall be of the
materials set forth in Section 1517.6. [1- Default – Not related
to structural wind resistance design]
SECTION 1518
HIGH-VELOCITY HURRICANE ZONES-ROOF COVERINGS WITH SLOPES 2:12 OR
GREATER
1518.1 General. Prepared roof coverings shall be as defined in Section 1513 and in general limited to application over sloped roof decks capable of receiving mechanical fasteners. Prepared roof coverings may be mechanically fastened or, in specific limited cases noted in the Product Approval, set in an adhesive bond.
1518.2 Underlayments. Underlayment shall be as defined in Section 1513. Underlayment shall be installed in compliance with the roofing component Product Approval and shall be in compliance with the following minimum requirements:
1518.2.1 Underlayment shall be attached to a nailable deck in a grid pattern of 12 inches (305 mm) between the overlaps, with 6-inch (152 mm) spacing at the overlaps.
1518.2.2 Where the architectural appearance of the underside is to be preserved, the underlayment shall be secured in accordance with Section 1519.5.2.
1518.2.3 Tin caps and nails or cap nails shall be as defined in Section 1517.5.2.
1518.2.4 Underlayment nails shall be as defined in Section 1517.5.1.
1518.3 If the underlayment is a self-adhering membrane, the membrane shall be applied over a mechanically attached anchor sheet, attached in compliance with Section 1518.2.1.
1518.4 All underlayment applications for prepared roof coverings shall be applied in compliance with the manufacturer roofing assembly Product Approval, and shall be not less than one of the following: (1) A double layer of an ASTM D 226 Type I, with a 19-inch (483 mm) headlap; or (2) A single layer of an ASTM D 226, type II with a 4-inch (102 mm) headlap; or (3) A single layer of an ASTM D 2626 coated base sheet with a 4 inch (102 mm) headlap, and (4) All endlaps shall be a minimum of 6 inches (152 mm).
1518.5 Fiber cement shingles. Fiber-cement shingles shall be applied in compliance with the shingle manufacturer's roofing assembly Product Approval. The roofing system assembly Product Approval shall meet the following minimum requirements:
1518.5.1 All non-asbestos fiber-cement shingles shall conform to ASTM C 1225.
1518.5.2 Fiber-cement shingles shall be installed in compliance with the nailing requirements set forth in the Product Approval; however, attachment of each component shall be with not less than two corrosion resistant fasteners. If adhesive is used at the head or side laps, the system shall be defined as a "sealed system" with load calculations in compliance with Chapter 16 (High-Velocity Hurricane Zones).
1518.5.3 All intersections shall be flashed in metal as provided in Section 1517.6 and RAS 111.
1518.5.4 Fiber-cement shingles shall be tested as set forth in Section 1523.
1518.6 Quarry slate. Quarry slates shall be applied in compliance with the slate manufacturer's Product Approval. The roofing assembly Product Approval shall meet the following minimum requirements:
1518.6.1 Quarry slates shall be installed with not less than two approved fasteners per slate.
1518.6.2 All terminations and intersections shall be flashed in metal as provided in Section 1517.6 and RAS 111.
1518.6.3 Quarry slates shall be tested in compliance with the requirements set forth in Section 1523.
1518.6.4 Installation of all quarry roof slates shall be limited to a roof mean height of 33 feet (10 m), unless otherwise specifically noted in the Product Approval.
1518.7 Asphaltic shingles. Asphaltic shingles layout, alignment and placement of mechanical attachment shall be in compliance with the Product Approval, and shall be installed in accordance with RAS 115.
1518.7.1 Underlayments exceeding minimum underlayments, as detailed in Section 1518, shall be applied in compliance with the application methods detailed in the Product Approval. Where the architectural appearance of the underside of the roof is to be preserved, refer to Section 1519.5.2.
1518.7.2 Installation of all asphaltic shingles shall be limited to a roof mean height of 33 feet (10 m), unless otherwise specifically noted in the Product Approval.
1518.7.3 The asphaltic shingle Product Approval shall meet the following minimum requirements.
1518.7.3.1 Where asphaltic shingles are to be installed over insulated roof deck, a suitable nailable substrate, in accordance with Section 1520.5.7 must be installed over the insulation prior to the installation of approved underlayment and shingles.
1518.7.3.2 Asphaltic shingles shall be installed in compliance with the Product Approval, but in no case with less than six approved roofing nails or approved fastening devices which penetrate through the thickness of sheathing or wood plank a minimum of 3/16 inch (4.8 mm) or penetrate into a 1 inch (25 mm) or greater thickness of lumber a minimum of 1 inch (25 mm), except where architectural appearance is to be preserved, in which case a minimum of 3/4 inch (19 mm) ring shank roofing nail may be used.
1518.7.3.3 Intersections, eaves, rakes, valleys, gable ends, and the starter course of asphaltic shingles shall be set in an 8-inch (203 mm) wide bed of approved cold adhesive or roofing cement. Application of adhesive or cement shall be in compliance with the application instructions of the Product Approval. Shingles shall not extend more than 1/4 inch (6.4 mm) beyond the eave drip.
1518.7.3.4 All perimeter termination and valleys shall be fabricated from metal. Minimum metal requirements are set forth in Section 1517.6 and RAS 111.
1518.7.3.5 Asphaltic shingles shall be tested in compliance with the provisions set forth in Section 1523.
1518.8 Clay and concrete roof tile. Tile shall be clay, concrete or composition material of various configurations complying with the physical property requirements of this code. All tile and tile systems shall be tested in compliance with the provisions set forth in Section 1523. Tile shall have a product approval for a complete tile system, which shall include the tile, underlayment and all tile related accessories required to provide a waterproof system.
1518.8.1 Application. All tile systems shall be installed over solid sheathed decks. All tile installation shall be in accordance with RAS 118, RAS 119, and RAS 120, as applicable.
1518.8.1.1 Roof tile mortar shall either be a pre-mixed unit having a Product Approval and tested in compliance with TAS 123 or a job-site mix approved by the building official and in compliance with RAS 113.
1518.8.2 The roof tile Product Approval shall specify the slope requirement for each tile and underlayment system in accordance with Table 1515.2.
1518.8.3 All roof tile fasteners shall be tested and comply with the requirements set forth in Section 1523.
1518.8.4 All tile systems. All tile application designs shall comply with the following limitations in order to withstand the wind loads prescribed in this section, as well as all wind load requirements set forth in Chapter 16 (High-Velocity Hurricane Zones).
1518.8.4.1 Roof tile systems, combining mechanically fastened tile and mortar and/or adhesive, shall be acceptable.
1518.8.4.2 In an air permeable tile roofing systems: (1) the length of each tile shall be not less than 12 inches (305 mm) and not greater than 21 inches (533 mm) and the exposed width of the tile shall be between 8.5 inches and 15 inches (216 and 381 mm); (2) the maximum thickness of the nose (leading edge) of the tile shall not exceed 1.3 inches (33 mm); and (3) mortar or adhesive set system shall have at least two-thirds of the tile free of mortar and/or adhesive contact.
1518.8.5 The proposed method of attachment for tile systems which are considered to be air permeable, shall provide sufficient attachment resistance (Mf) (listed in tile product approval) to meet or exceed the moment of resistance (Mr) as determined by following the procedures outlined in RAS 127. The aerodynamic multiplier (k) needed in RAS 127 shall be part of the tile Product Approval and shall be derived from the following formula:
for direct deck
application k =
(0.156) × (b) × (l)2
for batten
application k = (0.144) × (b) × (l)2
Where b (in feet) = exposed width of the tiles
Where l (in feet) = length of tiles
1518.8.6 The proposed method of attachment for tile systems which are not considered air permeable shall provide a minimum characteristic force (F') (listed in tile product control approval) to meet or exceed the required uplift resistance (Fr) as determined by following the procedures outlined in RAS 127.
1518.8.7 Tile systems shall extend beyond the drip edge (not including the rake) not less than 3/4 inch (19 mm) but not more than 2 inches (51 mm).
1518.8.8 Spanish "S" tile, barrel tile or other
tile systems that create a void between the deck and the underside of the tile
shall be closed at the eaves with a prefabricated closure or mortar filler to
close the eaves and elevate the butt ends of the first course, as detailed in
the tile system Product Approval. [1- Default – Not related
to structural wind resistance design]
1518.8.9 Apply a minimum 3/8-inch (9.5 mm) diameter
weephole, spaced not more than 12 inches (305 mm) apart, located flush with the
underlayment of all tile systems, except tile systems using thick-butt tile. [1- Default – Not related to structural wind resistance design]
1518.8.10 Mortar or adhesive set tiles applied at an incline from 6:12 up to and including 7:12 shall have the first course of tile (this applies to pan only on two-piece barrel tile) mechanically fastened with not less than one fastener per tile. As an alternate, the first course of tile shall be applied in mortar over a single layer of minimum 20 gage galvanized wire mesh with openings of not less than 1/2 inch (12.7 mm) or greater than 11/2 inches (38 mm) with minimum exposure of 12 inches (305 mm) which is mechanically attached to the deck through the underlayment with approved fasteners and tin-cap when back-nailing the cap sheet. Additionally, for roof inclines of 6:12 up to and including 7:12, every third tile of every fifth course, shall be mechanically fastened with not less than one fastener per tile. For roof inclines above 7:12, in addition to the mortar or adhesive, all tiles shall be mechanically fastened with not less than one fastener per tile. Apply approved flashing cement to seal all tile fastener penetrations, for all roof inclines.
1518.8.11 All tile systems shall be shingle lapped interlocking and installed with the headlap as specified in the tile system Product Approval. In no case shall the minimum headlap be less than 2 inches (51 mm) for mortar or adhesive set tile, or less than 3 inches (76 mm) for mechanically set tile, unless restricted by product design.
1518.8.12 Where tiles are to be installed over an insulated roof deck, a suitable nailable substrate, in accordance with Sections 1520.5.6 and 1520.5.7 must be installed over the insulation prior to the installation of approved underlayment and tiles.
1518.8.13 For mortar or adhesive set tile, no more than two tiles shall be loose per roofing square [100 square feet (9.3 m2)]. No loose tile shall be adjacent to each other.
1518.9 Metal panels/shingles. Steel panels/shingles shall be a minimum of G-90 corrosion resistant, and shall be not less than 26 gage in thickness. Aluminum panels/shingles shall not be less than 0.025-inch (0.685 mm) thick. All other metal panel/shingle products shall be an equivalent weight. All metal panel/shingle assemblies shall be capable of withstanding foot traffic without damage to the metal panels/shingles. Metal panels/shingles shall have Product Approval for a complete metal system, which shall include the panel/shingle, underlayment and all related accessories to provide a complete waterproof system.
1518.9.1 All metal panels/shingles assemblies shall be tested in accordance with Section 1523, and TAS 125.
1518.9.2 The entire application method of all metal panel/shingle systems shall be detailed in the Product Approval and RAS 133, as applicable.
1518.9.3 Metal shingles may be applied as a recover over a single layer of asphaltic shingles or smooth surface roofing, providing the deck is solid sheathed and in compliance with the provisions of this code, the existing prepared roof covering is in compliance with provisions of this code and the entire metal shingle system is applied as set forth in the Product Approval.
1518.9.4 Metal panel/shingle systems shall not extend more than 1 inch (25 mm) beyond the roof eave.
1518.9.5 All intersections shall be flashed in metal as provided in Section 1517.6, RAS 111 and the roof assembly Product Approval.
1518.10 Wood shingles and shakes. All wood shingles and shakes shall be installed in accordance with RAS 130. Installation of all wood shingles and shakes shall be limited to a roof mean height of 33 feet (10 m), unless otherwise specifically noted in the Product Approval.
1518.10.1 All wood shingle/shake systems shall be tested in accordance with Section 1523.
1518.11 Building integrated photovoltaic roofing modules/shingles. The installation of building integrated photovoltaic roofing modules/shingles shall comply with the provisions of this section.
1518.11.1 Material standards. Building integrated photovoltaic roofing modules/shingles shall be listed and labeled in accordance with UL 1703.
1518.11.2 Attachment. Building integrated photovoltaic roofing modules/shingles shall be attached in accordance with the manufacturer’s product approval.
1518.11.3 Wind
resistance. Building integrated photovoltaic roofing modules/shingles shall
be tested in accordance with procedures and acceptance criteria in TAS
107. Building integrated photovoltaic
roofing modules/shingle packaging shall bear a label to indicate compliance
with the procedures in TAS 107.
SECTION 1519
HIGH-VELOCITY HURRICANE ZONES-ROOF COVERINGS WITH SLOPES LESS THAN 2:12
1519.1 General. All adhered roofing components shall be bonded to the various types of substrates in compliance with the requirements set forth in the roofing assembly Product Approval and the following minimum requirements. The authority having jurisdiction may adopt RAS 150 as the means of complying with the requirements listed in this section.
1519.2 All packaged asphalt shall have the following data printed on the carton wrapper:
1519.2.1 ASTM designation and type;
1519.2.2 Flash point as determined by ASTM D 92, Flash and Fire Point by Cleveland Open Cup; and
1519.2.3 Equiviscous temperature (EVT) at which the asphalt attains a viscosity of 125 centipoise (25 centipoise for coal tar) as determined by ASTM D 4402, Viscosity Determinations of Unfilled Asphalt Using The Brookfield Thermoset Apparatus.
1519.3 Asphalt types, as defined by ASTM D 312, shall be employed in all roofing assemblies. Application of asphalt shall be in compliance with Table 1519.3A and Table 1519.3B or as detailed in the roofing assembly Product Approval.
(NOTE: INCLUDE TABLES
1519.3A AND 1519.3B - SLOPE AND APPLICATION TEMPERATURE CRITERIA)
1519.4 Back nailing of interply sheets shall not be required when using ASTM D 312 Type IV asphalt on slopes less than 3:12.
1519.5 Mechanical attachment. All mechanically attached roofing components shall be attached to the various types of substrates in compliance with the requirements set forth in the roofing assembly Product Approval and the following minimum requirements.
1519.5.1 Base sheet attachment on wood decks. Nails shall be minimum 12 gage, annular ring shank nails having not less than 20 rings per inch; heads not less than 3/8 inch (9.5 mm) in diameter; and lengths sufficient to penetrate through the thickness of plywood panel or wood plank decking not less than 3/16 inch (5 mm), or to penetrate into a 1-inch (25.4 mm), or greater, thickness of lumber not less than 1 inch (25.4 mm). Nails shall be hot dipped; electro or mechanically galvanized to a thickness sufficient to resist corrosion in compliance with Appendix E of TAS 114. All nails shall have Product Approval. All nail cartons or carton labels shall be labeled to note compliance with the corrosion resistance requirements. No roofing material shall be fully or partially adhered, unless otherwise noted in the roof assembly Product Approval directly to a nailable deck.
1519.5.1.1 Tin caps shall meet the requirements of Section 1517.5.2.
1519.5.1.2 Prefabricated fastener systems complying with Section 1519.5.1 and Section 1519.5.1.1 may be used, provided they are Product Approved.
1519.5.1.3 Spacing of such fasteners shall be in compliance with patterns set forth in the roofing assembly Product Approval.
1519.5.2 Where the architectural appearance of the underside is to be preserved, a base sheet may be secured in an alternate method of attachment prepared, signed, and sealed by a Florida-registered architect or engineer, or in buildings where the mean roof height does not exceed 15 feet (4.6 m), a base sheet may be secured with 11/4-inch (32 mm) fasteners on supporting members, with a minimum of 1/2-inch (12.7 mm) fasteners between the supporting members, all of which shall be secured through tin caps and nailed 6 inches (152 mm) o.c. in all directions.
1519.5.3 Lightweight insulating concrete. All lightweight insulated concrete shall be vented per roofing system manufacturer recommendations.
1519.5.3.1 Lightweight concrete shall not be applied over an existing roof deck unless the supporting structure has been approved as adequate to sustain the added weight. Calculations verifying the adequacy of the existing structure to sustain the added weight shall be prepared, signed, sealed and dated by a Florida-registered architect or engineer, who is proficient in structural design, and submitted with the uniform roofing permit application.
1519.5.4 Other nailable decks. The mechanical attachment of roofing components to other nailable decks shall be governed by the roofing assembly Product Approval.
1519.6 Cast-in-place and precast structural concrete decks. Cast-in-place and precast structural concrete decks are considered non-nailable. Concrete decks shall be clean, dry and fully primed with ASTM D 41 or ASTM D 43, as required, primer applied at a rate of not less than 1 gallon (3.8 L) per square. Hot asphalt or cold adhesive shall not be applied until the primer has fully dried.
1519.6.1 In hot mopped applications over precast panels,
a minimum of 12-inch (305 mm) wide strips of roofing felt or modified bitumen
shall be applied to all panel joints. Said strips shall be bonded to the panel
joints with asphalt, approved mastic or approved cold applied adhesive or shall
be torched to a primed surface. [1- Default – Not related
to structural wind resistance design]
1519.7 Steel decks. Steel decks shall be covered with a roof insulation panel having its own Product Approval and listed in the roofing assembly product approval. Insulation panels shall be mechanically fastened in compliance with the mechanical attachment patterns listed in the roofing assembly Product Approval and in accordance with the provisions of RAS 117.
1519.7.1 If the deck thickness on an existing steel deck is less than 22 gage, a field fastener withdrawal resistance test shall be conducted in compliance with TAS 105, to confirm compliance with the wind load requirements of Chapter 16 (High-Velocity Hurricane Zones). Test results shall be submitted with the uniform roofing permit application for review prior to issuance of the roofing permit. The field fastener withdrawal resistance test shall be carried out by an approved testing laboratory.
1519.7.2 Steel decks shall be welded or mechanically attached to the structure in compliance with the design pressure requirements set forth in Chapter 16 (High-Velocity Hurricane Zones).
1519.7.3 Composite wood and insulation panels shall be mechanically attached to steel decks in compliance with the attachment requirements enumerated in the insulation roofing component Product Approval. The composite wood insulation panel shall be in compliance with the minimum sheathing requirements of this code.
1519.8 Flashing. All flashing shall be installed according to the roof assembly manufacturer's published details and literature and in accordance with RAS 111.
1519.9 Valleys. Valleys in BUR shall be installed according to the roof assembly manufacturer's published literature for high wind areas and in compliance with the applicable detail described in the Product Approval.
1519.10 Parapet walls. All parapet wall details shall be installed in accordance with the roofing system product approval, manufacturer's published details and literature and in accordance with approved methods detailed in RAS 111.
1519.11 Insulation. Roof insulation shall be applied in compliance with the roofing system Product Approval and RAS 117.
1519.12 Surfacing. Roofing assemblies shall be surfaced in compliance with the Product Approval. Surfacing shall be in sufficient quantity to comply with the required fire classification. Aggregate surfacing shall not be used on slopes greater than 3:12. Aggregate shall be embedded in a flood coat of bitumen applied over a prepared top ply.
1519.12.1 On slopes of 3:12 or less, not less than 400 pound (182 kg) of roofing gravel or 300 pounds (145 kg) of slag per square shall be applied. A minimum of 50 percent of the total aggregate shall be embedded in the flood coat of bitumen. Aggregate shall be dry and free from dirt and shall be in compliance with the sizing requirements set forth in ASTM D 1863. A building official may request a test to confirm compliance with these requirements.
1519.12.2 On inclines greater than 3:12, a smooth surface coating shall be applied.
1519.12.3 Mineral surfaced cap sheet applications shall not require any additional surfacing unless required with the particular assembly for a fire classification.
1519.12.4 All smooth surface applications shall be coated with an aluminized or emulsion coating, having a valid and current Product Approval and shall be in compliance with the application instructions in said Product Approval. Coating quantity shall be in compliance with the required fire rating classification for the structure.
1519.13 Attachment of metal termination. All edge metal and terminations shall be installed according to manufacturer's published literature, provided it meets the minimum requirements as set for in RAS 111 and Chapter 16 (High-Velocity Hurricane Zones).
1519.14 Expansion joints. Expansion joint covers and expansion joint components shall be constructed and installed in accordance with the roofing assembly manufacturer's published literature.
1519.15 Venting roofing assemblies. All roof assemblies shall be applied to a dry substrate. Vapor retarders shall be installed, where applicable, to reduce moisture vapor flow into insulation from the warm, humid building interior, leading to internal condensation. Vents shall be installed to assist in the expulsion of moisture vapor where such vapor may enter the roofing assembly or moisture, as defined in Section 1521.12. Venting units shall not allow vapor to enter the roofing assembly when the high vapor pressure side is above the roofing membrane.
1519.16 Waterproofing. Waterproofing systems may be installed in lieu of an approved roof system over sloped or horizontal decks specifically designed for pedestrian and/or vehicular traffic, whether the deck is above occupied or unoccupied space. In new construction the minimum deck slope shall be 1/4:12.
1519.16.1 The waterproofing system must possess a current and valid product approval.
1519.16.2 If an overburden or wearing surface is not to be installed, the waterproofing system must be approved by the manufacturer for use in vehicular and/or pedestrian traffic locations.
1519.16.3 The waterproofing assembly must possess a Class
A, Class B or Class C fire rating as required herein. [2 – Fire/Life
Safety]
1519.16.4 If any portion of the waterproofing membrane is to remain exposed, the waterproofing system shall be ultra-violet resistant.
1519.16.5 Flashings must be installed in accordance with the waterproofing manufacturer's published specifications and in compliance with the material and attachment standards of RAS 111.
1519.16.6 The waterproofing system shall be flood tested in accordance with ASTM D 5957.
1519.16.6.1 The flood test shall take place after installation of the waterproofing membrane and prior to the installation of any above membrane components, wearing surface or overburden.
1519.16.6.2 An approved testing lab shall provide written verification to the building official confirming that the flood test was performed along with the results, prior to final inspection.
SECTION 1520
HIGH-VELOCITY HURRICANE ZONES-ROOF INSULATION
1520.1 General. All roof insulation shall have a product approval as an approved roofing component for use in roofing assemblies. All insulation shall be tested for physical properties in accordance with TAS 110.
1520.2 Foam plastic. Foam plastic roof insulation shall
conform to the material and insulation requirements of Chapter 26. [1- Default – Not related to structural wind resistance design]
1520.2.1 Foam insulation panels shall be overlaid with a perlite, fiberglass, wood fiber or mineral wool overlay unless specifically stated to the contrary in the roof assembly Product Approval.
1520.3 Cellulose fiberboard. Cellulosic fiberboard roof
insulation requirements shall conform to the materials and insulation
requirements of Chapter 23. [1- Default – Not related
to structural wind resistance design]
1520.4 Insulation fasteners, membrane fasteners and stress plates. All insulation fasteners, membrane fasteners and stress plates shall have a roof component Product Approval, and shall be tested in compliance with RAS 117 Appendixes A, B and C, and TAS 110 and TAS 114, Appendix E, Section 3 (DIN 50018), for corrosion resistance.
1520.5 Application. Roof insulation shall be applied in strict compliance with the application methods detailed in the roof assembly Product Approval and with the requirements set forth in RAS 117.
1520.5.1 Roof insulation, either on the ground or on the roof top, shall be kept dry. The building official shall instruct the removal of the insulation from the job when elevated moisture levels are found in the insulation or where panels cannot achieve 85-percent adhesion.
1520.5.2 When applied in hot asphalt or cold adhesive, no insulation panel's dimension shall be greater than 4 feet (1219 mm).
1520.5.3 Strip or spot mopping of insulation panels shall be used as an application method only when approved in the roof assembly Product Approval.
1520.5.4 Where more than one layer of insulation is applied, joints between layers shall be staggered.
1520.5.5 Application in approved cold adhesive shall be as detailed in the Product Approval and shall be in compliance with the required fire classification.
1520.5.6 Nail boards or composite panels with a nailable surface may be applied to sloped decks for the application of prepared roof covering or metal roofing systems, providing that the nailing surface is minimum 15/32-inch (12 mm) exterior grade plywood sheathing, and has been attached to the deck with approved fastening assemblies in accordance with the windload requirements of Chapter 16 (High-Velocity Hurricane Zones). Composite panels shall be gapped a minimum of 1/8 inch (3.2 mm) to allow for expansion of the sheathing panel.
1520.5.7 Suitable nailable decks installed over rigid board roof insulation in buildings of mean roof height of 35 feet (10.7 m) or less, shall be a minimum of 15/32-inch (12 mm) exterior grade plywood sheathing. These decks shall be fastened to every structural roof frame member or to the existing deck under the insulation, at intervals of not more than 24 inches (610 mm) apart, with a minimum #12 approved insulation fastener spaced at a maximum of 12 inches (305 mm) apart in one direction with a minimum penetration of 11/2 inches (38 mm) into the structural member or deck. In these cases the maximum thickness of the rigid insulation board shall not exceed 2 inches (51 mm). An alternate method of attachment may be proposed, provided it is in compliance with Chapter 16 (High-Velocity Hurricane Zones), and it is prepared, signed and sealed by a Florida-registered architect or a Florida professional engineer, which architect or engineer shall be proficient in structural design.
1520.5.8 Mechanical attachment of insulation panels at uneven areas shall be acceptable. Hollowing, cutting or scoring of insulation panels to provide contact shall not be acceptable.
SECTION 1521
HIGH-VELOCITY HURRICANE ZONES-REROOFING
1521.1 General. Materials and methods of application used for recovering or replacing an existing roof covering, system or assembly shall comply with the requirements set forth in Sections 1512 through 1525.
1521.2 Repairs shall be carried out with roofing components as defined in this chapter having a Product Approval.
1521.3 Repairs shall be carried out in such a manner as to not create additional ponding water.
1521.4 Not more than 25 percent of the total roof area or roof section of any existing building or structure shall be repaired, replaced or recovered in any 12-month period unless the entire existing roofing system or roof section is replaced to conform to requirements of this code.
1521.5 A roofing system shall not be applied over an existing roof or over an existing roof deck where the roof sheathing has not been fastened in compliance with this code or where the roof sheathing will not permit effective fastening or where sheathing is water soaked or deteriorated so that effective attachment is not possible. All areas of deteriorated sheathing shall be removed and replaced. The building official shall not be required to inspect the renailing of the sheathing under this section.
1521.6 Structural concrete decks shall be allowed to dry or shall be dried prior to application of an ASTM D 41 or ASTM D 43, as required, or roofing system proprietary primer where the base sheet or base insulation layer is bonded to the concrete deck.
1521.7 On lightweight concrete, gypsum and cementitious wood fiber roof decks a field fastener withdrawal resistance test, in compliance with TAS 105, shall be carried out to confirm compliance with wind load requirements of Chapter 16 (High-Velocity Hurricane Zones).
1521.7.1 If the tested fasteners exhibit a minimum characteristic resistance force less than 80 percent than that listed in the Product Approval, a structural engineer shall examine the deck's integrity and provide a proposed attachment specification. Such specification shall be submitted with the uniform roofing permit application for review and approval by the building official prior to the issuance of a roofing permit. Calculations for the attachment of the anchor sheet/base sheet or insulation over these deck types, shall be in compliance with RAS 117.
1521.8 Steel decks shall be examined prior to recover for indication of corrosion. Any corrosion identified and exposed on the roof side shall be treated with a rust inhibitor, providing the field fastener withdrawal resistance values of the proposed mechanical fasteners comply with the requirements of Chapter 16 (High-Velocity Hurricane Zone) of this code. All steel decks less than 22 gage shall be field tested for fastener withdrawal resistance for compliance with Chapter 16 (High-Velocity Hurricane Zones) prior to application of a new roofing system. Test results shall be submitted with the uniform roofing permit application.
1521.9 One additional roofing system may be applied over an original roofing assembly, providing the existing roofing assembly complies with the requirements of Section 1521.
1521.10 If the recover roofing assembly is to be bonded to an existing roofing membrane, the existing roofing membrane shall be tested in compliance with TAS 124 for uplift resistance. The existing roofing membrane shall resist the design pressures calculated under Chapter 16 (High-Velocity Hurricane Zones) of this code. Test results shall be submitted with the uniform roofing permit application.
1521.11 If the recover roofing assembly is mechanically attached through either a base sheet or insulation layer, the attachment assembly shall be field tested for fastener withdrawal resistance, in compliance with TAS 105, and laboratory tested for pull-over resistance to insure compliance with wind uplift requirements set forth in Chapter 16 (High-Velocity Hurricane Zones) of this code. Test results shall be submitted with the uniform roofing permit application. Recover roofing assembly anchor sheet or base sheet shall not be mechanically fastened directly to existing gravel roof unless all gravel is completely removed.
1521.12 Moisture content of the existing roofing assembly to be covered by a new roofing system shall not exceed 5 percent by weight in the roofing membrane and 8 percent by weight in commercially manufactured rigid board roof insulation as verified by moisture survey performed in accordance with TAS 126. Test results shall be submitted with the Uniform Roofing Permit Application. Testing for moisture content shall not be required for existing lightweight insulating concrete, gypsum, and cementitious wood fiber roof decks. All existing lightweight insulating concrete, gypsum and cementitious wood fiber roof decks shall be tested per Section 1521.7 to confirm compliance with wind load requirements of Chapter 16 (High-Velocity Hurricane Zones).
1521.13 Prior to starting the work the contractor has the responsibility of notifying the owner, by means of the roofing permit and required owners notification for roofing considerations herein, of any possibility of ponding water and recommend a structural review if ponding water is a possibility.
1521.14 If the new roofing system is to be bonded to the existing roof surface, the surface shall be free of all loose gravel, dirt and silt and dry prior to commencement of the roofing application. All blisters shall be cut and repaired prior to roofing application.
1521.14.1 If the existing roof surface has gravel embedded in hot asphalt, all loose gravel shall be removed together with any dirt and silt. The dry membrane surface shall be primed with ASTM D 41 primer or proprietary roofing system primer and allowed to dry thoroughly. A flood coat of ASTM D 312, type III or IV asphalt shall be applied to sufficient depth to cover the remaining embedded gravel. The prepared substrate shall be suitable for application of a new insulation layer only.
1521.14.2 In the case of existing coal tar assemblies, the existing roof surface shall be primed with ASTM D 43 primer or covered with a mechanically attached separation board prior to application of a new coal tar assembly. If an existing coal tar assembly is to be covered with an asphalt applied roofing system, only the separation board is acceptable. The attachment of the entire assembly, including the separation board, shall meet the design pressure requirements set forth in Chapter 16 (High-Velocity Hurricane Zones).
1521.14.3 Insulation shall have a Product Approval as a roofing component approved for use as a part of the roofing assembly. The insulation panels shall be bonded or mechanically attached in compliance with the Product Approval and RAS 117.
1521.15 Where an existing sloped roof is sheathed with spaced sheathing, any existing prepared roof covering shall be removed. New sheathing shall be applied in compliance with Chapter 16 (High-Velocity Hurricane Zones), or open spacing shall be filled with dimensional lumber to create solid wood sheathing providing the spaced sheathing is in compliance with this code. Spaced sheathing is approved for use with wood shakes and wood shingles only.
1521.16 No recover application shall take place over existing wood shingles, shakes, slate, tile or metal shingles.
1521.17 Asphaltic shingle assemblies may be applied over one existing layer of asphaltic shingles having not more than 1/8-inch (3.2 mm) difference in level in the existing shingle material. Recover over an existing shingle system shall be with a product having a Product Approval as prepared roof covering, in strict compliance with the application method detailed in the product approval.
1521.17.1 Application of elastomeric and or maintenance coating systems over existing asphalt shingles shall be in accordance with the shingle manufacturer’s approved installation instructions.
1521.18 Sprayed polyurethane foam (PUF) and elastomeric coating systems may be applied over existing roofing assemblies providing the PUF system has obtained a product approval, the deck has been prepared in compliance with the product approval and this code, the application is in strict compliance with the foam manufacturer's published application instructions for the environmental conditions at the time of application and post-application inspections conform to RAS 109.
1521.18.1 No PUF system shall be applied over existing composition shingles.
1521.18.2 Upon completion of a PUF system, an inspection of the system shall be carried out by an authorized representative of the coating manufacturer. A certification shall be furnished to the building official within 30 days of completion, confirming that the quality control tests detailed in the PUF system Product Approval have been carried out with satisfactory results.
1521.18.3 Should a PUF system have inadequate adhesion to meet the design pressures, as set forth in Chapter 16 (High-Velocity Hurricane Zones), the roofing system shall be removed and replaced with a roofing system tested to adequate adhesion. An additional inspection shall be required once the roofing system has been replaced. A field adhesion test may be requested by the building official during the application or at the completion of the project to confirm adequate adhesion.
1521.18.4 The PUF system shall comply with Section 1521.
1521.18.5 All PUF systems shall be installed by licensed roofing contractors holding an applicator's certificate from the manufacturer holding the product approval for the PUF system.
1521.19 Roof coverings or roofing components, such as tile, slate or similar, shall not be applied over an existing roofing system.
1521.20 Lightweight insulated concrete shall not be applied over an existing roofing system unless the existing roofing assembly is verified to be adequate to accept the new lightweight insulating concrete and is in compliance with the testing required herein.
1521.21 Existing ventilation. Ridge ventilation is
recommended whenever possible to create airflow entering the soffit and exiting
the ridge. Ridge ventilation shall not be installed without adequate soffit
ventilation to draw outside air through the ridge void. When recovering,
repairing or reroofing, the existing amount of attic ventilation shall not be
reduced. [1- Default – Not related to structural wind
resistance design]
Exception: Attic spaces designed by a Florida-licensed
engineer or registered architect to eliminate the attic venting. [1- Default – Not related to structural wind resistance design]
SECTION 1522
HIGH-VELOCITY HURRICANE ZONES-ROOFTOP STRUCTURES AND COMPONENTS
1522.1 Rooftop structures. Rooftop structures shall be designed and constructed in accordance with the Florida Building Code.
1522.2 Rooftop mounted equipment. All rooftop equipment and supports shall be secured to the structure in compliance with the loading requirements of Chapter 16 (High-Velocity Hurricane Zones). The use of wood "sleepers" shall not be permitted.
Where equipment
and appliances requiring access are installed on roofs or elevated structures
at a height exceeding 16 feet (4877 mm), such access shall be provided by a
permanent approved means of access, the extent of which shall be from grade or
floor level to the equipment and appliances' level service space. Such access
shall not require climbing over obstructions greater than 30 inches (762 mm)
high or walking on roofs having a slope greater than 4 units vertical in 12
units horizontal (33-percent slope). [1- Default – Not related
to structural wind resistance design]
Permanent ladders
installed to provide the required access shall comply with the following
minimum design criteria: [1- Default – Not related
to structural wind resistance design]
1. The
side railing shall extend above the parapet or roof edge not less than 30
inches (762 mm).
2. Ladders
shall have rung spacing not to exceed 14 inches (356 mm) on center.
3. Ladders
shall have a toe spacing not less than 6 inches (152 mm) deep.
4. There
shall be a minimum of 18 inches (457 mm) between rails.
5. Rungs
shall have a minimum 0.75-inch (19 mm) diameter and be capable of withstanding
a 300-pound (136.1 kg) load.
6. Ladders
over 30 feet (9144 mm) in height shall be provided with offset sections and
landings capable of withstanding 100 pounds (488.2 kg/m2) per square foot.
7. Ladders
shall be protected against corrosion by approved means.
[1- Default – Not related to structural wind resistance design]
Catwalks installed to provide the required access shall
be not less than 24 inches (610 mm) wide and shall have railings as required
for service platforms. [1- Default – Not related
to structural wind resistance design]
Exception: This section shall not apply to Group R-3
occupancies. Minimum clearances below roof-mounted mechanical units shall be in
accordance with Section 1509.7, Florida Building Code, Building. [1- Default – Not related to structural wind resistance design]
1522.3 Machinery, piping, conduit, ductwork, signs and
similar equipment may be mounted on roofs in compliance with the following: [1- Default – Not related to structural wind resistance design]
1522.3.1 Permanently mounted rooftop equipment shall be
installed to provide clearances, in accordance with Table 1522.3, to permit
repairs, replacement and/or maintenance of the roofing system or any of its
components. [1- Default – Not related to structural wind resistance
design]
TABLE 1522.3
ROOF MOUNTED EQUIPMENT HEIGHT REQUIREMENTS
WIDTH OF EQUIPMENT
(in.) HEIGHT
OF LEGS
(in.)
Up to 24 14
25 to 36 18
37 to 48 24
49 to 60 30
61 and wider 48
For SI: 1 inch =
25.4 mm.
[1- Default – Not related to structural wind resistance design]
1522.3.2 When reroofing, recovering, performing repair or
roof maintenance, and where the roof top equipment is moved to properly execute
such work, the minimum clearances of the said equipment support shall be in
accordance with Table 1522.3. [1- Default – Not related
to structural wind resistance design]
1522.3.3 In buildings where the existing rooftop
equipment, in the opinion of the building official, provides sufficient
clearance to repair, recover, replace and/or maintain the roofing system or any
of its components, such existing equipment need not comply with Table 1522.3. [1- Default – Not related to structural wind resistance design]
1522.3.4 Electrical conduit, mechanical piping or any
other service lines running on the roof shall be raised not less than 8 inches
(203 mm) above the finished roof surface. [1- Default
– Not related to structural wind resistance design]
1522.3.5 Condensate lines shall not drain on the roofing
system or any of its components. Condensate lines need not comply with the
minimum clearance requirements. [1- Default – Not related
to structural wind resistance design]
SECTION 1523
HIGH-VELOCITY HURRICANE ZONES-TESTING
1523.1 Scope. This section defines the minimum testing requirements for substrates, roofing components, roofing systems and roofing assemblies. All roofing products shall be tested for physical properties, water-infiltration, uplift performance and fire resistance, as addressed within this code.
1523.1.1 Testing requirements for physical properties of all roofing products shall be as set forth in TAS 110.
1523.1.2 Testing requirements for fire resistance shall
be in compliance with ASTM E 108 or UL 790. [2– Fire/Life
Safety]
1523.2 Application. Testing for substrates, roofing components, roofing systems and roofing assemblies shall comply with the provisions herein and those of Florida Building Code, Building, TAS and RAS listed in this code.
1523.3 Laboratory certification. All testing required by this code shall be performed by an approved testing laboratory.
1523.4 Margin of safety. A margin of safety of 2:1 shall be applied to all wind uplift resistance test results. All in-situ (on site) testing shall have an applied 1.45:1 margin of safety.
1523.5 Material labeling. All products shall be identified with the product approval number or logo; or the manufacturer's name or logo. ASTM standard roll goods shall be marked with a yellow line to identify the ASTM standard, or such other marking indicated in the Product Approval.
1523.5.1 All asphaltic shingles, tile products and metal roofing panels and clips shall be labeled on the underside with the Florida Building Code, Building insignia, or Product Approval number, or the wording "Florida Building Code, Building Product Approved," and manufacturer's initials or manufacturer's logo, or as specified in the manufacturer's Product Approval.
1523.6 Testing
requirements.
1523.6.1 The certification agency, at its discretion, may carry out, observe or delegate the inspection and testing to an independent testing laboratory for any approved product. Should the manufacturer fail to meet the minimum requirements set forth in this code or specifically listed in the manufacturer’s product control approval, the certification agency shall have the authority to withdraw the approval until such time as the manufacturer complies with the approved physical properties. The certification agency shall have the authority, and shall charge the manufacturer for any cost incurred.
1523.6.2 Continuous roofing systems. All continuous roofing systems shall be tested in compliance with TAS 110 and TAS 114 in its entirety. All continuous roofing systems shall resist a minimum of 90 pounds per square foot (psf) (4309 Pa) tested wind uplift pressure resistance. Continuous roofing system testing requirements shall be as follows:
1523.6.2.1 Spray applied polyurethane foam. All spray applied polyurethane foam systems shall be tested in compliance to RAS 109 and TAS 110 and TAS 114.
1523.6.2.1.1 Physical properties testing for acrylic coatings used on spray applied polyurethane foam roofing assemblies shall be tested in compliance with ASTM D 6083 and federal specification TTC-555B, Test Specification for Wind Driven Rain Infiltration Resistance.
1523.6.3 Liquid applied roofing membranes systems. All liquid applied roofing membranes systems shall be tested in compliance with TAS 114, in addition to the physical properties testing requirements set forth in TAS 110, and fire resistance.
1523.6.3.1 For liquid applied acrylic roofing membrane assemblies, physical properties testing shall be in compliance with ASTM D 6083 and federal specification TTC-555B, Test Specification for Wind Driven Rain Infiltration Resistance.
1523.6.4 The building official may request that a quality control field uplift test be carried out on a continuous roofing system in compliance with test procedure TAS 124. Single-ply systems are not required to meet the deflection requirements established in the test protocol. The roofing system shall resist the design pressures as calculated in compliance with Chapter 16 (High-Velocity Hurricane Zones), and as established in TAS 124.
1523.6.4.1 Should a roofing system fail to meet a quality control field uplift test, the roofing contractor may propose to the building official an acceptable method of repair that is in compliance with the requirements of this code.
1523.6.5 Discontinuous roofing systems. All discontinuous roofing systems shall be tested in compliance with TAS 100 for wind-driven water infiltration resistance. Test specimens used for this test shall be constructed at the approved test facility. Testing requirements shall be as follows:
1523.6.5.1 Asphaltic shingle systems. All asphaltic shingle systems shall comply with the following requirements: TAS 100, TAS 107, ASTM D 3462 and ASTM D 3018. Asphaltic shingle systems shall have a quality control testing program by an approved independent listing agency having an unannounced follow-up visit. Follow-up test results shall be made available to the certification agency upon request.
1523.6.5.2 Clay and cement roof tiles. All roof tiles shall be tested in compliance with TAS 100. Physical properties testing for clay roof tiles shall be in compliance with ASTM D 1167. Physical properties testing for concrete roof tiles shall be in compliance with TAS 112. All approved roof tile manufacturers shall submit a quarterly TAS 112 Appendix A test report to the certification agency for review. All roof tiles shall resist a minimum wind uplift resistance as determined by Chapter 16 (High-Velocity Hurricane Zones) of this code and RAS 127. Clay and cement roof tile systems requirements are as follows:
1523.6.5.2.1 Underlayment. All underlayments used in discontinuous roof tile systems shall be tested in compliance with TAS 103 and TAS 104, unless otherwise specifically listed in the applicable RAS.
1523.6.5.2.2 Mortar or adhesive set roof tile systems. All mortar or adhesive set tile systems shall be tested for static uplift resistance in compliance with TAS 101, the results of which shall be listed in the system manufacturer's Product Approval.
1523.6.5.2.2.1 Additionally, roof tile system manufacturers may test for wind characteristics in compliance with TAS 108, provided the system is determined to be air permeable by testing in compliance with TAS 116; and the tiles meet the size criteria set forth in TAS 108. The result from this testing shall be an aerodynamic multiplier (l) which represents the system's wind characteristics and shall be listed in the system manufacturer's Product Approval.
1523.6.5.2.2.2 Systems which are tested for wind characteristics, in compliance with TAS 108 as specified above, shall have the results of the TAS 101 testing treated as attachment resistance moment (Mf), which is representative of the tile bond's resistance to overturning moment, and the tile's restoring moment due to gravity (Mg). Such systems shall use the system's aerodynamic multiplier (l) in conjunction with the system's attachment resistance moment (Mf) and restoring moment due to gravity (Mg), as determined from the TAS 101 static uplift testing. These results shall be used in conjunction with the attachment calculations outlined in RAS 127 as a moment-based system. Such calculations shall be submitted to the building official for review.
1523.6.5.2.2.3 Systems that are not tested in compliance with TAS 108 as specified above shall have their product control approval based on the system's uplift minimum characteristic resistance force (F') , as determined from TAS 101 static uplift testing. These results shall be used in conjunction with the attachment calculations outlined in RAS 127 as an uplift-based system. Such calculations shall be submitted to the building official for review.
1523.6.5.2.2.4 Testing in accordance with TAS 106 shall be considered a product application quality control test to determine the general adhesion properties of the system.
1523.6.5.2.3 Mechanically fastened, rigid roofing systems. All mechanically attached set tile systems shall be tested for static uplift resistance in compliance with TAS 102 or TAS 102(A), the results of which shall be listed in the system manufacturer's NOA.
1523.6.5.2.3.1 Additionally, roof tile system manufacturers may test for wind characteristics in compliance with TAS 108, provided the system is determined to be air permeable by testing in compliance with TAS 116; and the tiles meet the size criteria set forth in TAS 108. The result from this testing shall be an aerodynamic multiplier (k) which represents the system's wind characteristics and shall be listed in the system manufacturer's Product Approval.
1523.6.5.2.3.2 Systems which are tested for wind characteristics in compliance with TAS 108 as specified above shall have the results of the TAS 102 or TAS 102(A) testing treated as an attachment resistance moment (Mf) which is representative of the rigid component's attachment resistance to an overturning moment, and the tile's restoring moment due to gravity (Mg). Such systems shall use the system's aerodynamic multiplier (k), in conjunction with the system's attachment resistance moment (Mf) and restoring moment due to gravity (Mg), as determined from the TAS 102 or TAS 102(A) static uplift testing. These results shall be used in conjunction with the attachment calculations outlined in RAS 127 as a moment-based system. Such calculations shall be submitted to the building official for review.
1523.6.5.2.3.3 Systems that are not tested in compliance with TAS 108 as specified above shall have their product control approval based on the system's uplift minimum characteristic resistance force (F' ), as determined from TAS 102 or TAS 102(A) static uplift testing. These results shall be used in conjunction with the attachment calculations outlined in RAS 127 as an uplift-based system. Such calculations shall be submitted to the building official for review.
1523.6.5.2.3.4 TAS 106 quality control field static uplift testing shall be considered a product application quality control test to determine the general uplift resistance properties of the system.
1523.6.5.2.4 Metal shingles/panels. All metal roofing shall be tested in compliance with TAS 100. All metal roofing shall resist a minimum wind uplift resistance as determined by Chapter 16 (High-Velocity Hurricane Zones) for a roof slope of 9.5 degrees (0.0166 rad) and a roof mean height of 15 feet (4.6 m). All metal roofing systems testing requirements shall be as follows:
1523.6.5.2.4.1 All metal roofing shall be test in compliance with requirements set forth in TAS 110 and TAS 125, and shall be tested for wind driven rain infiltration resistance in compliance with TAS 100.
1523.6.5.2.4.2 Rigid metal shingle systems may be tested in an identical manner to nail-on or batten tile systems as set forth in this code.
1523.6.5.2.5 Wood shingles or shakes. All wood shingles and shakes shall be tested, as a system, for wind driven rain infiltration resistance in compliance with TAS 100. The same specimens as tested in TAS 100 shall be tested for pull-through tear resistance, and such values shall be listed in the manufacturer's Product Approval.
1523.6.5.2.6 Fiber cement shingle or tile panels. All fiber cement shingles or tiles shall resist a minimum wind uplift resistance as determined by Chapter 16 (High-Velocity Hurricane Zones) for a roof slope of 9.5 degrees (0.0166 rad) and a roof mean height of 15 feet (4.6 m). All fiber cement shingle or tiles shall be tested in compliance with the following requirements. Wind driven water resistance in compliance with TAS 100, physical properties in compliance with TAS 110, TAS 135 and uplift resistance.
1523.6.5.2.6.1 Additionally, fiber cement tile system manufacturers may test for wind characteristics in compliance with TAS 108, provided the system is determined to be air permeable by testing in compliance with TAS 116 and the tiles meet the size criteria set forth in TAS 108. The result from this testing shall be an aerodynamic multiplier (k) which represents the system's wind characteristics and shall be listed in the system manufacturer's Product Approval.
1523.6.5.2.6.2 Systems which are tested for wind characteristics in compliance with TAS 108 as specified above shall have the results of the TAS 102 or TAS 102(A) testing treated as an attachment resistance moment (Mf) which is representative of the rigid component's attachment resistance to an overturning moment, and the tile's restoring moment due to gravity (Mg). Such systems shall use the system's aerodynamic multiplier (l), in conjunction with the system's attachment resistance moment (Mf) and restoring moment due to gravity (Mg), as determined from the TAS 102 or TAS 102(A) static uplift testing. These results shall be used in conjunction with the attachment calculations outlined in RAS 127 as a moment-based system. Such calculations shall be submitted to the building official for review.
1523.6.5.2.6.3 Systems that are not tested in compliance with TAS 108 as specified above shall have their product approval based on the system's uplift minimum characteristic resistance force (F' ), as determined from TAS 102 or TAS 102(A) static uplift testing. These results shall be used in conjunction with the attachment calculations outlined in RAS 115 as an uplift-based system. Such calculations shall be submitted to the building official for review.
1523.6.5.2.6.4 TAS 106 quality control field static uplift testing shall be considered a product application quality control test to determine the general uplift resistance properties of the system.
1523.6.5.2.7 Quarry roof slate. All quarry roof slate shall be tested in compliance with TAS 100 and TAS 110.
1523.6.5.2.8 Roof board insulation. All roof board insulation shall be tested for physical properties as set forth in Section 7 of TAS 110.
1523.6.5.2.9 Insulation fasteners, membrane fasteners and stress plates. All insulation fasteners, membrane fasteners and stress plates shall be tested in compliance with TAS 117 Appendices A, B and C, and TAS 110 and TAS 114, Appendix E, Section 3, (DIN 50018), for corrosion resistance.
1523.6.5.2.10 Roofing nails and tin-caps. All roofing nails and tin-caps shall be tested for corrosion resistance in compliance with TAS 114, Appendix E, Section 2 (ASTM G 85).
1523.6.5.2.11 Roof tile nails or fasteners. All roof tile nails or fasteners, except those made of copper, monel, aluminum or stainless steel, shall be tested for corrosion in compliance with TAS 114, Appendix E, Section 2 (ASTM G 85), for salt spray for 1000 hr.
1523.6.5.2.11.1 Tile fasteners used in coastal building zones, as defined in Chapter 16 (High-Velocity Hurricane Zone), shall be copper, monel, aluminum or stainless steel.
1523.6.5.2.12 Roofing adhesives, mastics and coatings. All roofing adhesives, mastics and coatings shall be tested in compliance with TAS 110 and TAS 121.
1523.6.5.2.12.1 All roofing adhesives, mastics and coatings shall have a quality control testing program by an approved independent listing agency having unannounced follow-up visits.
1523.6.5.2.12.2 Acrylic roof coatings shall be tested for physical properties in compliance with ASTM D 6083.
1523.6.5.2.13 Ridge
vents of metal, plastic or composition material. All ridge vents shall be
tested in compliance with TAS 100(A) for for wind driven water infiltration. All
ridge ventilators shall be restricted to roof mean height as tested in compliance
with TAS 100(A), and shall be listed in the system manufacturer's Product
Approval.
1523.6.5.2.13.1 All plastic ridge ventilators shall be tested for physical properties as set forth in TAS 110 and Chapter 26 of this code.
1523.6.5.2.13.2 All plastic ridge ventilator manufacturers shall have an unannounced follow-up quality control program from an approved listing agency. Follow-up test results shall be made available to the certification agency upon request.
1523.6.5.2.14 Edge
metal, flashings, and coping. All edge metal, flashing and copings, not
specifically described in RAS 111, shall be tested in complianced with TAS
110, TAS 111(A), TAS 111(B) or TAS 111(C), respectively.
1523.6.5.2.15 Roof tile pre-mixed bagged mortar. All premixed roof tile mortar shall comply with the requirements set forth in TAS 110 and TAS 123, and shall have a quality control testing program by an approved independent listing agency having unannounced follow-up visits. Follow-up test results shall be made available to the certification agency upon request.
1523.6.5.2.16 Roof tile adhesive used in repair or supplemental tile attachment. All roof tile adhesive used in repair or supplemental tile attachment shall comply with the requirements set forth in TAS 110 and TAS 123(A).
1523.6.5.2.17 Roof tile adhesive used in adhesive set tiles systems. All roof tile adhesive used in adhesive set tile systems shall comply with the requirements set forth in TAS 110 and TAS 123. Physical properties shall be as follows:
1523.6.5.2.17.1 Tested for compressive strength in compliance with ASTM D 1621 with a minimum strength of 18 psi (121 kPa) parallel to rise, and 12 psi (82.7 kPa) perpendicular to rise.
1523.6.5.2.17.2 Tested for density in compliance with ASTM D 1622 with a minimum density of 1.6 lb/ft3 (25.6 kg/m3).
1523.6.5.2.17.3 Tested for tensile strength in compliance with ASTM D 1623 with a minimum requirement of 28 psi (193 kPa) parallel to rise.
1523.6.5.2.17.4 Tested for dimensional stability taken from a free rise sample specimen. Tested in compliance with ASTM D 2126 with a maximum volume change of +0.07 percent volume change at -40°F (-40°C) for two weeks; and +6.0 percent volume change at 158°F (70°C) and 100 percent RH for two weeks.
1523.6.5.2.17.5 Tested in compliance with ASTM D 2856 from a free rise sample specimen with a minimum requirement for 85 percent.
1523.6.5.2.17.6 Tested for water absorption in compliance with ASTM D 2842 with a maximum requirement of 10 percent.
1523.6.5.2.17.7 Tested in compliance with ASTM E 96 for moisture vapor transmission for a maximum of 3.1 perms.
SECTION 1524
HIGH-VELOCITY HURRICANE ZONES-REQUIRED OWNERS NOTIFICATION FOR
ROOFING CONSIDERATIONS
1524.1 Scope. As it pertains to this section, it is the responsibility of the roofing contractor to provide the owner with the required roofing permit, and to explain to the owner the content of this section. The provisions of Chapter 15 of the Florida Building Code, Building govern the minimum requirements and standards of the industry for roofing system installations. Additionally, the following items should be addressed as part of the agreement between the owner and the contractor. The owner's initial in the designated space indicates that the item has been explained.
1. Aesthetics-workmanship:
The workmanship provisions of Chapter 15 (High-Velocity Hurricane Zone) are for
the purpose of providing that the roofing system meets the wind resistance and
water intrusion performance standards. Aesthetics (appearance) are not a
consideration with respect to workmanship provisions. Aesthetic issues such as
color or architectural appearance, that are not part of a zoning code, should
be addressed as part of the agreement between the owner and the contractor. [1- Default – Not related to structural wind resistance design]
2. Re-nailing wood decks. When replacing roofing, the existing wood roof deck may have to be re-nailed in accordance with the current provisions of Chapter 16 (High-Velocity Hurricane Zones) of the Florida Building Code, Building. (The roof deck is usually concealed prior to removing the existing roof system.)
3. Common
roofs: Common roofs are those which have no visible delineation between
neighboring units (i.e., townhouses, condominiums, etc.). In buildings with
common roofs, the roofing contractor and/or owner should notify the occupants
of adjacent units of roofing work to be performed. [1- Default
– Not related to structural wind resistance design]
4. Exposed ceilings. Exposed, open beam ceilings are where the underside of the roof decking can be viewed from below. The owner may wish to maintain the architectural appearance; therefore, roofing nail penetrations of the underside of the decking may not be acceptable. The owner provides the option of maintaining this appearance.
5. Ponding
water: The current roof system and/or deck of the building may not drain well
and may cause water to pond (accumulate) in low-lying areas of the roof.
Ponding can be an indication of structural distress and may require the review
of a professional structural engineer. Ponding may shorten the life expectancy
and performance of the new roofing system. Ponding conditions may not be
evident until the original roofing system is removed. Ponding conditions should
be corrected. [1- Default – Not related
to structural wind resistance design]
6. Overflow scuppers (wall outlets). It is required that rainwater flow off so that the roof is not overloaded from a buildup of water. Perimeter/edge walls or other roof extensions may block this discharge if overflow scuppers (wall outlets) are not provided. It may be necessary to install overflow scuppers in accordance with the requirements of: Chapter 15 and 16 herein and the Florida Building Code, Plumbing.
7. Ventilation:
Most roof structures should have some ability to vent natural airflow through
the interior of the structural assembly (the building itself). The existing
amount of attic ventilation shall not be reduced. [1- Default
– Not related to structural wind resistance design]
Exception: Attic spaces, designed by a Florida-licensed
engineer or registered architect to eliminate the attic venting, venting shall
not be required. [1- Default – Not related
to structural wind resistance design]
_____________________ _____ ___________________
Owner's/Agent's Signature Date Contractor's Signature
SECTION 1525
HIGH-VELOCITY HURRICANE
ZONES UNIFORM PERMIT APPLICATION
Florida Building Code
Edition 2013
High-Velocity Hurricane Zone
Uniform Permit Application Form.
INSTRUCTION PAGE
COMPLETE THE NECESSARY
SECTIONS OF THE UNIFORM ROOFING PERMIT
APPLICATION FORM AND
ATTACH THE REQUIRED DOCUMENTS AS NOTED BELOW:
|
Roof System |
Required Sections of the Permit Application Form |
Attachments Required See List Below |
|
Low Slope Application |
A,B,C |
1,2,3,4,5,6,7 |
|
Prescriptive BUR-RAS 150 |
A,B,C |
4,5,6,7 |
|
Asphaltic Shingles |
A,B,D |
1,2,4,5,6,7 |
|
Concrete or Clay Tile |
A,B,D,E |
1,2,3,4,5,6,7 |
|
Metal Roofs |
A,B,D |
1,2,3,4,5,6,7 |
|
Wood Shingles and Shakes |
A,B,D |
1,2,4,5,6,7 |
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Other |
As Applicable |
1,2,3,4,5,6,7 |
ATTACHMENTS REQUIRED:
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1. |
Fire Directory Listing Page |
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2. |
From Product Approval: Front Page Specific System
Description Specific System
Limitations General
Limitations Applicable Detail
Drawings |
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3. |
Design Calculations per Chapter 16, or If Applicable, RAS
127 or RAS 128 |
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4. |
Other Component of Product Approval |
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5. |
Municipal Permit Application |
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6. |
Owners Notification for Roofing Considerations (Reroofing
Only) |
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7. |
Any Required Roof Testing/Calculation Documentation |
Florida Building Code
Edition 2013
High-Velocity Hurricane Zone
Uniform Permit Application Form.
Section A (General
Information)
Master Permit No.___________________________________ Process No. _________
Contractor’s Name_______________________________________________________
Job Address____________________________________________________________
ROOF CATEGORY
Low Slope
Mechanically Fastened Tile
Mortar/Adhesive Set Tiles
Asphaltic Shingles
Metal Panel/Shingles
Wood Shingles/Shakes
Prescriptive BUR-RAS 150
ROOF TYPE
New roof
Reroofing
Recovering
Repair
Maintenance
ROOF SYSTEM INFORMATION
Low Slope Roof Area (SF): Steep Sloped Roof AREA (SSF): Total (SF):
Section B (Roof Plan)
Sketch Roof Plan:
Illustrate all levels and sections, roof drains, scuppers, overflow scuppers
and overflow drains. Include dimensions of sections and levels, clearly
identify dimensions of elevated pressure zones and location of parapets.
[Note to editor: Use graph paper image]
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Florida Building Code
Edition 2013
High-Velocity Hurricane Zone
Uniform Permit Application Form.
Section
C (Low Slope Application) Surfacing:_________________________
Fill
in specific roof assembly components
And
identify manufacturer Fastener Spacing for Anchor/Base Sheet Attachment:
(if
a component is not used, identify as “NA”) Field: ____“ oc @ LP, # Rows ___@____” oc
System
Manufacturer:____________________ Perimeter:
____” oc @ Lap, # Rows ___@ ____” oc
Product
Approval No.: ____________________ Corner:
____” oc @ Lap, # Rows ____ @ ____” oc
Design
Wind Pressures, From RAS 128 or Calculations: Number
of Fasteners Per Insulation Board:
P1
____ P2____ P3____ Field_____ Perimeter_____
Corner________
Max. Design Pressure, from the specific
Product Illustrate
Components Noted and Details as Applicable:
Approval system: ________________________ Woodblocking, Gutter, Edge Termination, Stripping,
Flashing, Continuous Cleat, Cant Strip, Base Flashing,
Deck: Counter-Flashing, Coping, Etc.
Type:
___________________________ Indicate: Mean Roof Height, Parapet Height, Height of
Base Flashing, Component Material,
Material Thickness, Gauge/Thickness:_________________
Fastener Type, Fastener Spacing or Submit
Manufacturers
Details that Comply with RAS 111 and Chapter
16.
Slope:___________________________
FT. FT.
Anchor/Base Sheet & No. of
Ply(s):__________
Anchor/Base Sheet Fastener/Bonding
Material:
________________________________
F
Insulation Base
layer:_____________________ Parapet Height
Base Insulation Size and
Thickness:__________
Base Insulation Fastener/Bonding Material:
________________________________ FT
Mean
Roof Height
Top Insulation
Layer:______________________
Top Insulation Size and Thickness:___________
Top Insulation Fastener/Bonding Material
________________________________
Base Sheet(s) & No. of Ply(s:
________________________________
Base Sheet Fastener/Bonding Material:
________________________________
Ply Sheet(s) & No. of
Ply(s):________________
Ply Sheet Fastener/Bonding Material:
________________________________
Top Ply:_________________________________
Top Ply Fastener/Bonding Material:
_________________________________
Florida Building Code
Edition 2013
High-Velocity Hurricane Zone
Uniform Permit Application Form.
Section D (Steep Sloped
Roof System)
Roof System
Manufacturer: Notice of
Acceptance Number: Minimum Design
Wind Pressures, if Applicable (From RAS 127 or Calculations): P1:_________ P2:___________ P3: ___________
Florida Building Code
Edition 2010
High-Velocity Hurricane Zone
Uniform Permit Application Form.
Section E (Tile
Calculations)
Steep Sloped Roof System Description
Florida Building Code
Edition 2013
High-Velocity Hurricane Zone
Uniform Permit Application Form.
Section E (Tile
Calculations)
For Moment based tile
systems, choose either Method 1 or 2. Compare the values for Mr with
the values from Mf. If the Mf values are greater than or
equal to the Mr values, for each area of the roof, then the tile
attachment method is acceptable.
Method 1 “Moment Based Tile
Calculations Per RAS 127”
(P1:____ x l ____ = ____) – Mg: ____ = Mr1 ____ Product
Approval Mf __________
(P2:____ x l ____ = ____) – Mg: ____ = Mr2 ____ Product
Approval Mf __________
(P3:____ x l ____ = ____) – Mg: ____ = Mr3 ____ Product
Approval Mf __________
Method 2 “Simplified Tile
Calculations Per Table Below”
Required Moment of Resistance (Mr) From Table Below _______
Product Approval Mf _______
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Mr required
Moment Resistance* |
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15’ |
20’ |
25’ |
30’ |
40’ |
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2:12 |
34.4 |
36.5 |
38.2 |
39.7 |
42.2 |
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3:12 |
32.2 |
34.4 |
36.0 |
37.4 |
39.8 |
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4:12 |
30.4 |
32.2 |
33.8 |
35.1 |
37.3 |
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5:12 |
28.4 |
30.1 |
31.6 |
32.8 |
34.9 |
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6:12 |
26.4 |
28.0 |
29.4 |
30.5 |
32.4 |
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7:12 |
24.4 |
25.9 |
27.1 |
28.2 |
30.0 |
*Must be used in
conjunction with a list of moment based tile systems endorsed by the Broward
County Board of Rules and Appeals.
For Uplift based tile
systems use Method 3. Compared the values for F’ with the values for Fr. If the
F’ values are greater than or equal to the Fr values, for each area of the
roof, then the tile attachment method is acceptable.
Method 3 “Uplift Based Tile
Calculations Per RAS 127”
(P1:____ x L ____ = ____ x w: = ____) – W: ____ x cos q ____ = Fr1 ____ Product
Approval F’ __________
(P2:____ x L ____ = ____ x w: = ____) – W: ____ x cos q ____ = Fr2 ____ Product
Approval F’ __________
(P3:____ x L ____ = ____ x w: = ____) – W: ____ x cos q ____ = Fr3 ____ Product
Approval F’ __________
Where to Obtain Information
|
Description |
Symbol |
Where to find |
|
Design Pressure |
P1 or P2 or P3 |
RAS 127 Table 1 or by
an engineering analysis prepared by PE based on ASCE 7 |
|
Mean Roof Height |
H |
Job Site |
|
Roof Slope |
q |
Job Site |
|
Aerodynamic
Multiplier |
l |
Product Approval |
|
Restoring Moment due
to Gravity |
Mg |
Product Approval |
|
Attachment Resistance |
Mf |
Product Approval |
|
Required Moment
Resistance |
Mg |
Calculated |
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Minimum Attachment Resistance |
F' |
Product Approval |
|
Required Uplift
Resistance |
Fr |
Calculated |
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Average Tile Weight |
W |
Product Approval |
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Tile Dimensions |
L = length
W = width |
Product Approval |
|
All calculations must
be submitted to the building official at the time of permit application. |
||