Dupont Thermax Heavy Duty 1.55" X 4' X 8' 29/Bundle

4' x 8', 1.55" Insulation, R9.8, Durable Glass Fiber Reinforced, Square and Shiplap Edge, Board, Heavy Duty, Wall and Ceiling Insulation with Thermoset Coated Aluminum Facer

DuPont™ Thermax™ Heavy Duty Insulation is an easy-to-install, easy-to-clean insulation and interior finish system for walls and ceilings in metal, wood post frame and concrete or masonry buildings, as governed by building codes. It consists of a glass-fiber-reinforced polyisocyanurate foam core faced with nominal 4-mil embossed white thermoset-coated aluminum on one side and 1.25-mil embossed aluminum on the other. The tough white embossed aluminum surface makes it a durable insulation/finish choice for use in moderate-impact areas and it can be pressure-washed up to 2,000 psi with a 15-degree or greater spray tip (at 3' minimum distance). The heavy duty facers help prevent water and water vapor intrusion into the insulation foam, allowing it to stabilize at a higher R-value for high, long-term thermal resistance. Used in conjunction with the appropriate joint closure system for the application, DuPont™ Thermax™ Heavy Duty Insulation – with its low perm rating – can help to reduce moisture condensation within and behind the insulation.