2.5-inch Type 4 XPS Rigid Insulation 2-ft x 8-ft stone wool offering increased coverage and requiring

offering increased coverage and requiring less adhesive for projects

making it ideal for both interior and exterior use

DuPont Tyvek HomeWrap delivers the optimum balance of properties for superior performance against the elements

waterproof

2.5-inch Type 4 XPS Rigid Insulation 2-ft x 8-ft stone wool offering increased coverage and requiringDupont Styrofoam Type 4 XPS Rigid Insulation 2. 5 inch x 2 ft x 8 ft. R Value of 12. Compressive strength of 30 psi. 8 sheets per bundle. DuPont Styrofoam Brand SM30 Extruded Polystyrene Foam Insulation is ideal for use in foundations, floor slabs, attics and crawlspaces, where it resists water pickup a characteristic that allows it to maintain its high R value.