CLASS A
Deck: Combustible or Non-Combustible
Slope: 2:12 (AC/N-39)
1.) Vapor retarder (Optional)
Vapor retarder consisting of optional glass-faced gypsum or SECUROCK™ Brand Roof Board (min. ¼-inch thick) mechanically fastened, either spot adhered or fully adhered with hot roofing asphalt or semi-adhered with insulation adhesive ribbons followed by one or more plies of any combination of the following ply sheets; 500, 506 or ASTM D 2178, adhered with ASTM D 312 hot roofing asphalt or any combination of one or more plies of the following base sheets; 501, 503, 515, 602, 603 or 605 secured with any combination of the following application methods;
- Mechanically fastened
- Spot or fully adhered with ASTM D 312 hot roofing asphalt
- Adhered with ASTM D 4479 cold process adhesive at a rate of 1.5 gals./sq./layer
- Semi-adhered with ¾”-1” wide adhesive ribbons of MRP 2B Membrane Adhesive
2.) Insulation (Optional)
Polyisocyanurate, polyisocyanurate composite, polystyrene, polystyrene composite, glass fiber, perlite, rock wool, wood fiber, glass-faced gypsum or SECUROCK™ Brand Roof Board (min. ¼-inch thick), gypsum (min. ½-inch thick) or asphaltic cover boards (min. 1/8-inch thick), any thickness (except as noted) or combination, mechanically fastened, either spot adhered or fully adhered with hot roofing asphalt or semi-adhered with insulation adhesive ribbons. Note: When EPS insulation is applied over a metal or combustible deck, a thermal barrier complying with section 2603.4.1.5 or applicable current section of the IBC is required.
Base Sheet (1 ply minimum)
1 or more plies
515 Panobase, 501 SBS Base Sheet, 602 Paragon Ultra Base
Ply Sheet (2 plies minimum)
Two or more plies of any combination of the following base sheets 501 Paragon Mod Base, 503, 515 Panobase, 602 Paragon Ultra Base, or ply sheets 500 PanoPly 4, 506 PanoPly 6, secured or adhered with any combination of the following application methods;
Surfacing
1-Ply 524G Paragon R cap, adhered with ASTM D 312 hot roofing asphalt , Karnak 66, or ASTM D 4479 cold process adhesive at a rate of 1.5 gals./sq./layer
Note: The component materials of each system must be applied in the order in which they are listed above.
For additional product information, visit Malarkey's website at www.malarkeyroofing.com.
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:
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ASTM-E108 - American Society for Testing & Materials 'Standard Methods of Fire Test of Roof Covering'
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FM-4470, Section 5.1.A - Factory Mutual 'Standard Method of Test for Fire Resistance of Roof Covering Materials'
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NFPA-256 - National Fire Protection 'Standard Method of Fire Tests of Roof Covering'
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CAN/ULC-S107 - Underwriters' Laboratories of Canada 'Standard Method of Tests for Fire Resistance of Roof Covering Materials'
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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.
