Products / Atlas ACFoam Supreme

Polyiso roof insulation board: a closed-cell polyisocyanurate foam core bonded on both sides to reflective tri-laminate foil facers. Offered in thicknesses giving LTTR values from 5.7 to 26.8, in 4 ft x 8 ft and 4 ft x 4 ft panels, at 20 psi (Grade 2) or 25 psi (Grade 3), with a non-halogenated formulation also offered. Manufactured to ASTM C1289 Type I, Class 1 and CAN/ULC 704.1. Atlas lists it for standing seam metal roofs and mechanically attached or ballasted single-ply systems, typically on cold storage and metal buildings, and not for hot asphalt, torch-applied or adhered systems. Atlas backs it with a Limited 20-Year Thermal Warranty, a limited warranty on LTTR value.