QAI Listing Report B1117-4 confirms DC360 tested to the CAN/ULC S102 “Standard method of test for Surface Burning Characteristics of Building Materials and Assemblies”. When applied at only 6 mils Wet Film (4 mils Dry) provides a Flame Spread of less than 25 and a Smoke Index of less than 100.
DC360 is now listed to CAN/ULC S126 “Standard Method of test for Fire Spread Underroof-Deck Assemblies” and can be applied to the underside of wood sheathing and framing members in built up roof systems.
When applied at 10 mils Wet Film (6 mils Dry Film) DC360 meets interior finish requirements while also preventing burn through for the duration of this 30-minute test.
According to the National Building Code of Canada, applying DC360 in concealed or limited access such as attic spaces, can also exempt these spaces from required sprinkler protection according to NFPA 13 “Standard for the Installation of Sprinkler Systems”.
Removal of sprinklers in these types of spaces present both a cost and logistical savings for the designer/owner while maintaining Code required fire safety! Win Win!
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