轩轩阁

Aluminium foil used for PIR (polyisocyanurate) insulation is primarily engineered as a high-performance facing and barrier layer bonded to PIR foam boards during continuous lamination. In this application, the foil is not merely a protective skin; it is a functional component that influences moisture resistance, thermal efficiency, dimensional stability, and downstream compatibility with tapes, coatings, and installation systems. Depending on the board design, the facing may be plain aluminum foil, reinforced foil (scrim/foil), or multi-layer composites such as foil–kraft–foil (FKF) or foil–scrim–kraft (FSK). A core benefit of Aluminium foil used for PIR boards is their excellent barrier behavior. The foil substantially reduces water-vapor transmission and air leakage through the insulation surface, which helps preserve the foam’s thermal performance over service life. In building envelope applications—roofs, walls, HVAC duct insulation, and cold storage—this vapor-control function i...