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Section 1514 High-Velocity Hurricane Zones—Weather Protection
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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.
All roof flashing and terminations shall be designed and installed to resist the windload requirements of Chapter 16 (High-Velocity Hurricane Zones) of this code, and shall be in compliance with the provisions set forth in RAS 111.
Where flashing is of metal, the metal shall conform with the provisions of RAS 111.
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.
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 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.
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).
Metal counterflashing shall be side lapped a minimum of 4 inches (102 mm).
Metal counterflashing, where set in reglets or surface-mounted, shall be waterproofed, in accordance with applicable application standards.
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).
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.
No roof penetration shall be located in roof valleys.
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.
Unless roofs are sloped to drain over roof edges, roof drains shall be installed at each low point of the roof. If required, roof drains shall comply with the Florida Building Code, Plumbing. Where required for primary 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, Chapter 8 with commentary and shall comply with Section 1611 herein.
Gutters shall be in compliance with RAS 111.
Where roof drains are required, overflow drains or overflow scuppers sized in accordance with Florida Building Code, Plumbing and ASCE 7, Chapter 8 with commentary 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 1611 of this code.
When recovering, reroofing or repairing an existing roof, the existing number or size of required scuppers and/or roof drains shall not be reduced, unless a new drainage system is designed by a registered design professional, in compliance with the provisions of this code.
Roof drains, gutters, conductors and leaders shall be sized and discharge in accordance with the Florida Building Code, Plumbing and ASCE 7, Chapter 8 with commentary.
Related Code Sections
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2014 FBC - Building, 5th edition > 15 Roof Assemblies and Rooftop Structures > 1514 High-Velocity Hurricane Zones— Weather Protection
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All roof flashing and terminations shall be designed and installed to resist the windload requirements of Chapter 16 (High-Velocity Hurricane Zones ...
2020 FBC - Building, 7th edition > 15 Roof Assemblies and Rooftop Structures > 1514 High-Velocity Hurricane Zones—Weather Protection > 1514.2 Flashings