Garland Non-Combustible Deck (AN-23)
Slope: 1/4:12
1.) Optional insulation: ½”Wood fiber, ½”glass fiber, polyisocyanurate, ½”perlite.
2.) ½” Dens-Deck. Note: when EPS insulation is applied over a metal or combustible deck, a thermal barrier complying with section 2603.4.1.5 of the IBC is required.
Note: When insulation is not used, 1-ply ASTM D4601 Type II Base Sheet or 1-ply VersiPly 40, mechanically fastened, is required. Insul Lock HR insulation adhesive can be used for insulation and cover board.
3.) Minimum 1 ply of Stress Base 80, Flex Base Plus 80, Flex base E 80, Stress Base 120, Flex Base Plus 120, Stress Base E 120, Flex Base 80, Flex Base 120, VersiPly 80, StressPly IV Smooth 120. Adhered with Weatherking, Greenlock, or ASTM-D312 Type IV roofing asphalt OR Minimum 1 ply HPR Torchbase.
4.) Minimum 1 ply of KEE Stone Fleece Back Membrane with KEE Lock Foam Adhesive.
Note: The component materials of each system must be applied in the order in which they are listed above.
Evaluated to the following:
The roof covering systems in this section have been evaluated for external fire resistance Classifications A, B, C as outlined by the following test methods:
- ASTM-E108 - American Society for Testing & Materials 'Standard Methods of Fire Test of Roof Covering'
- FM-4470, Section 5.1.A - Factory Mutual 'Standard Method of Test for Fire Resistance of Roof Covering Materials'
- NFPA-256 - National Fire Protection 'Standard Method of Fire Tests of Roof Covering'
- ULC-S107 - Underwriters' Laboratories of Canada 'Standard Method of Tests for Fire Resistance of Roof Covering Materials'
- UL-790 - Underwriters' Laboratories Inc. 'Tests for Fire Resistance of Roof Covering Materials'
Each system listing identifies the deck substrate as either non-combustible or combustible. Systems evaluated for combustible decks will provide the same ratings when applied over non-combustible decks. Unless otherwise noted in individual listings, combustible decks shall be sheathed with a minimum 15/32" veneer plywood or minimum 7/16" non-veneer APA rated sheathing panel (oriented strand board panels, structural particleboard panels, composite panels or wafer-board panels) or 3/4" thick solid wood sheathing boards. The component materials of each system must be applied in the order in which they are listed. All components of the system must be listed for external fire exposure by an agency acceptable to the AHJ.
Some Roof Covering Systems have been evaluated for other performance characteristics, in addition to external fire exposure. Where applicable, such additional performance characteristics are noted within the specific listing.
In all cases, manufacturer's instructions should be consulted for installation procedures and details not covered by these listings.
Listed Materials are identified by a label or marking bearing the wording, "Listed Roofing Component", a reference number or code and the WHI Certification Mark.
