Tarco Fiberglass Base Sheet 36" X 108' (300 sq. ft. Coverage)

Fiberglass base sheet is applied over the flat roofing deck or insulation as a base sheet by mechanical fasteners or hot asphalt before the application of build-up roofing systems. It is manufactured from a tough inorganic fiberglass mat then coated on both sides with a weathering-grade asphalt coating and then covered with white sand fines to prevent sticking in the roll.