US Patent Issued to Carlisle Construction Materials on Dec. 16 for "Application of intumescent and vapor retarder coatings on open-cell spray polyurethane insulation" (Pennsylvania Inventor)

ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,496,615, issued on Dec. 16, was assigned to Carlisle Construction Materials LLC (Carlisle, Pa.).

"Application of intumescent and vapor retarder coatings on open-cell spray polyurethane insulation" was invented by Kevin Wiacek (Mechanicsburg, Pa.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of providing fire protection and vapor transmission resistance to a polyurethane foam insulation material, comprising: spraying an open cell polyurethane foam insulation onto a building structure; applying an intumescent paint onto the open cell polyurethane foam insulation; and then applying a vapor retarder paint over the intumescent paint. The vapor reta...