Sisalation GR405 is a light grammage, double sided reflective foil laminate incorporating layers of aluminium foil, high strength kraft paper and reinforcing scrim bonded together with a binder.
Sisalation GR405 is recommended for both pitched and flat roof structures with the roof covering laid longitudinally over the rafters working from the eaves to the ridge of the roof. The roll should be unwound so that the printed surface faces upwards, exposing the 150mm overlap line. Each horizontal layer must be evenly tensioned across the rafters.