York Wasco Seal 12 in. W X 150 ft. L Polyethylene Flashing Black

Wasco Seal is a flexible PVC membrane. It is made of a non-reinforced polymeric, waterproofed, impermeable sheet, composed of elastomeric substances which have been reduced to a thermoplastic state and formed into a continuous sheet. Wasco Seal is available in thicknesses of 20 mil and 30 mil. A non-reinforced polymeric, waterproofed, impermeable sheet, composed of elastomeric substances which have been reduced to a thermoplastic state and formed.