Products / Atlas ACFoam CrossVent

Cross-ventilated nailable roof insulation panel: ACFoam-II or ACFoam-III polyiso, EPS vent spacers giving a 1, 1.5 or 2 inch airspace, and a nailable top surface of OSB or CDX plywood. Supplied in 4 ft x 8 ft panels at 20 or 25 psi with LTTR values from 5.7 to 23.6, with a non-halogenated formulation also offered. Approved as a non-structural panel over wood and steel decks at a minimum 3/12 pitch under asphalt shingle, standing seam metal, tile and slate roofs, mechanically attached per Atlas fastening requirements. Atlas backs it with a Limited 20-Year Thermal Warranty, a limited warranty on LTTR value.