// CODE SNIPPET
1515.2 Guidelines for Roofing Applications
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MINIMUM SLOPE
| SYSTEM TYPE | SLOPE |
| Fibrous Cement Shingles | 4:12 |
| Metal Panels | |
| Architectural | 2:121 |
| 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 | 31/2:12 |
| Wood | |
| Shakes | 4:12 |
| Shingles | 31/2:12 |
- Standing seam metal roof panel systems that pass the requirements of the Static Water Leakage Test criteria of FM 4471, Appendix G or ASTM E2140 shall be permitted to be installed to a minimum slope of 1:12.
All roofing systems and prepared roof coverings shall be installed over solid decks, unless otherwise specifically allowed in other sections of this code.
All roofing assemblies must be installed in compliance with the slope requirements specified in the product control approval, in compliance with Table 1515.2.
In new construction the minimum deck slope shall be not less than 1/4:12.
All eaves shall provide a firm nailable substrate for secure attachment of perimeter edge metal in compliance with RAS 111.
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.
Roof coverings installed on low slope roofs in accordance with Section 1519 shall resist impact damage based on the results of tests conducted in accordance with ASTM D3746, ASTM D4272, FM 4470 or TAS 114.
Ridge vents shall have a product approval, and shall be tested for wind driven rain in accordance with TAS 110 and Section 1523.
Related Code Sections
1515.2 Roof Assemblies and Rooftop Structures, Guidelines for Roofing Applications
Standing seam metal roof panel systems that pass the requirements of the Static Water Leakage Test criteria of FM 4471, Appendix G ...
2020 FBC - Building, 7th edition > 15 Roof Assemblies and Rooftop Structures > 1515 High-Velocity Hurricane Zones—Performance Requirements > 1515.2 Guidelines for Roofing Applications
1515.2 Roof Assemblies and Rooftop Structures, Guidelines for Roofing Applications
All roofing systems and prepared roof coverings shall be installed over solid decks, unless otherwise specifically allowed in other ...
2017 FBC - Building, 6th edition > 15 Roof Assemblies and Rooftop Structures > 1515 High-Velocity Hurricane Zones— Performance Requirements > 1515.2 Guidelines for Roofing Applications
1515.2 Roof Assemblies and Rooftop Structures, Guidelines for Roofing Applications
All roofing systems and prepared roof coverings shall be installed over solid decks, unless otherwise specifically allowed in other ...
2014 FBC - Building, 5th edition > 15 Roof Assemblies and Rooftop Structures > 1515 High-Velocity Hurricane Zones— Performance Requirements > 1515.2 Guidelines for Roofing Applications
1515.2.2 Roof Assemblies and Rooftop Structures, Minimum Slope
All roofing assemblies must be installed in compliance with the slope requirements specified in the product control approval, in compliance ...
2014 FBC - Building, 5th edition > 15 Roof Assemblies and Rooftop Structures > 1515 High-Velocity Hurricane Zones— Performance Requirements > 1515.2 Guidelines for Roofing Applications > 1515.2.2 Minimum Slope
1515.2.3 Roof Assemblies and Rooftop Structures, Deck Preparation
nails or fasteners shall be as set forth in the roofing assembly product approval ...
2020 FBC - Building, 7th edition > 15 Roof Assemblies and Rooftop Structures > 1515 High-Velocity Hurricane Zones—Performance Requirements > 1515.2 Guidelines for Roofing Applications > 1515.2.3 Deck Preparation