Hydro Bond PVC Water-Based Adhesive is a wet lay-in, one-sided dispersion adhesive. Hydro Bond is used to secure PVC membranes to clean and dry horizontal surfaces with up to a 2:12 slope and as a contact adhesive in vertical applications. It is compatible with only Sure-Flex PVC smooth-backed and PVC and KEE HP FleeceBACK® membranes, this product is ideal for bonding only PVC membranes to various porous and non-porous substrates (cannot be used with any KEE or KEE HP bareback membranes).