Combustible Deck (AC-2)
Slope: 2:12
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Rosin paper optional.
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Optional Insulation's - Wood Fiber, glass fiber, polyisocyanurate, phenolic, perlite, combinations of these or 1/2" Dens Deck, 1/2" perlite or 1/2" wood fiberboard applied over EPS insulation. 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.
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Optional only with Insulation's - 1-Ply ASTM D 4601 Type II base sheet, mechanically fastened.
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3-Plies ASTM D 4601 Type II base sheet, HPR Tribase Plus or SBS Modified Base Sheet fully adhered with Weatherking Mastic, Weatherking WC, at 1-1/2 to 3 gal./sq. each ply.
OR
2 Plies ASTM D4601 Type II base sheet HPR Tribase Plus or SBS Modified Base Sheet fully adhered with Weatherking Mastic, Weatherking WC, at 1-1/2 to 3 gal./sq. followed by 1 Ply of VersiPly Mineral, Stress Ply Mineral, Stress Ply Mineral FR, StressPly Plus FR Mineral, Stress Ply EUV SPF FR Mineral., Stress Ply EUV Mineral, StressPly Max FR Mineral, Stress Ply E FR Mineral, Stress Ply E Mineral, OptiMax FR Mineral, Adhered with Weatherking or Weatherking WC.
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Coated with Grip Mastic, Weatherking, Weatherking WC or Weather Screen at a minimum coverage rate of 3 gal./sq. and embedded with No. 11 roofing granules at a minimum coverage rate of 60 lbs./sq. or coat with GarlaBrite or Pyramic.
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'
UBC-15-2-94 - Uniform Building Code 'Test Standard for Determining the Fire Retardancy of Roof Covering Materials'
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.
Intertek Testing Services is a CAL FIRE Approved Testing Laboratory.
