InsulFoam’s HD Composite insulation board bonds closed-cell, expanded polystyrene (EPS) foam together with a 1/2″ thick, high-density polyisocyanurate cover board. Available in 4′-by-8′ sheets, the insulation board comes in thicknesses between 1.5″ and 7″ and provides R-values from 6.4 to 25. It can be used with single-ply-membrane, built-up, and modified-bitumen roof systems or as an underlayment for metal roofing systems. HD Composite’s 100% recyclable, HCFC- and formaldehyde-free foam has a compressive strength ranging from 10 to 60 psi and weighs 1 to 3 pcf. • insulfoam.com
Note: The image has been updated since first publication to show the correct InsulFoam product.
