Jiffy Seal® 140/60 60 mil, polyester reinforced, peel and stick sheet waterproofing membrane for use on foundation walls, decks, balconies, bathrooms, terraces, split slabs, parking structures and anywhere a positive waterproofing membrane may be needed. This membrane has a double silicone treated release film on the top that keeps the membrane from adhering to itself while on the roll. The release liner has a unique zip strip serration on both edges, which allows an adhesive-to-adhesive lap bond between each sheet that bonds instantly.