DuPont™ Thermax™ White Finish (WF) Insulation is a polyisocyanurate insulation and interior finish system for interior masonry or concrete walls, plus walls and ceilings in metal, wood post frame, and concrete or masonry buildings, as governed by building codes. The glass-fiber-reinforced polyisocyanurate foam core is faced with nominal 1.25-mil embossed white acrylic coated aluminum on one side and 0.9-mil smooth aluminum on the other. The white embossed surface of Thermax™ White Finish is aesthetically pleasing and easy to clean and can be pressure-washed up to 1,000 psi with a 15-degree or greater spray tip (at minimum 3’ distance). DuPont™ Thermax™ Brand insulation delivers wall performance you can count on. It’s ready to meet your toughest building challenges – both outside and inside the wall – with a robust ISO insulation product line and an R-value that’s proven consistent over time and a range of temperatures.