Product Description
ACFoam7reg; CrossVent® combines the performance of a cross-ventilating air space, nailable roof substrate and thermally efficient polyiso insulation. It consists of ACFoam®-II or ACFoam®-III polyisocyanurate (polyiso) insulation board and a min. 7/16" APA/TECO rated OSB or min. 19/32" CDX plywood separated with and bonded to 5 individual 1.0", 1.5" or 2.0" vent spacer strips.