Mastic Home Exteriors by Ply Gem introduces a new certified green insulated siding system.
Mastic Home Exteriors by Ply Gem  introduces a new certified green insulated siding system. This premium insulated cladding option boosts the R-value of exterior walls and reduces the impact of thermal bridging. It is NAHB Research Center Green-Approved for recycled content andcompliant with the LEED Green Building Rating System. Insulation is backed with polystyrene foam and available in sizes up to 1 ¼ in. thick.