The “International Code Council Evaluation Service Report” (ESR) lets architects, specifiers, contractors and building inspectors know that a product meets all required life safety and building codes. Bayer MaterialScience LLC has revised its ESR 1655 with new data that outlines significant changes pertaining to thermal resistance values, fire-rated assemblies, prescriptive barriers, and code compliance. ESR 1655 covers Bayer’s spray polyurethane foam (SPF) insulation, Bayseal Open-Cell (OC).