No-Burn’s No-Burn Plus system has the required ignition barrier rating for code compliance under applicable sections of the International Building Code (IBC) and International Residential Code (IRC). The tests were conducted on No-Burn intumescent coating over spray polyurethane foam plastic insulation manufactured by BASF Polyurethane Foam Enterprises. The coating is accepted for use over BASF’s Enertite semi-rigid, open-cell polyurethane foam plastic insulation in attics and crawl spaces without a prescriptive ignition barrier per ACC-377 test results. No-Burn can reduce toxic smoke by as much as 80%, carries a Class A fire rating, and is nontoxic and noncarcinogenic.