Check the listing for details. DC315 White Intumescent Coating Thermal & Ignition Barrier 5 Gallon Pail. Color: White, Condition: New. Listed at 449.00 USD. DC315 Fireproof Paint for alternative Thermal and Ignition Barrier for Spray Polyurethane Foam (SPF)DC315 Fireproof Paint is a fully tested and approved intumescent coating to meet 15-minute alternative Thermal Barrier and Ignition Barrier protection over Spray Polyurethane Foam (SPF). DC315 meets IBC/IRC codes in the USA, Canadian NBCC and many international Building Code Requirements.Building Code Fire Performance Requirements for SPF: The International Building Code (IBC) mandates that SPF be separated from the interior of the building by a 15-minute thermal barrier, or other approved covering. DC315 Carries ICC-ESR 3702 Evaluation Report confirming that DC315 meets IBC and IRC Code Requirements. DC315 has also been tested as an ignition barrier under AC 377 Appendix X.