Abstract: A roof includes a deck, an insulating layer over the deck and a base sheet comprising a laminate of aluminum and unwoven polyester overlaying the insulating layer such that the unwoven polyester layer faces the insulating layer. The base sheet and insulating layer are fastened to the deck by a plurality of mechanical fasteners. A conventional built-up roof composite, or a conventional single-ply membrane, is then formed over the base sheet.
Abstract: A roof includes a deck, an insulating layer over the deck and a base sheet comprising a laminate of aluminum and unwoven polyester overlaying the insulating layer such that the aluminum layer faces the insulating layer. The base sheet and insulating layer are fastened to the deck by a plurality of mechanical fasteners. A conventional built-up roof composite, which may include a plurality of alternating layers of a bituminous material and felt, is then formed over the base sheet.