PavePrep TSA is a heavy duty, high strength, geocomposite self-adhesive membrane used to reinforce and waterproof pavement cracks adn joints, to reduce reflective cracking of asphalt concrete overlays, and as heavy duty bridge deck waterproofing membrane. Paveprep TSA is designed with the same high strength characteristics of PavePrep except that it can reduce the shadowing affect in asphalt concrete overlays as thin as 1 1/2" when compacted.