DuraFoam™
Johns Manville DuraFoam™ is a high thermal rigid roof insulation board composed of a closed cell polyisocyanurate foam core bonded in the foaming process to DuraBoard™, an expanded perlite mineral aggregate board.
The top surface of DuraFoam is sealed with a special polymerized asphalt emulsion coating to allow for the direct application of SBS or APP membranes utilizing heat weld application techniques.
