HydroBond Water-Based PVC Adhesive is a wet lay-in, one-sided dispersion adhesive. Compatible with only WeatherBond PVC smooth-backed membranes in adhered systems, this product is ideal for bonding PVC membranes to various porous and non-porous substrates. HydroBond is used to secure the PVC membranes to clean and dry horizontal surfaces up to a 2:12 slope and as a contact adhesive in vertical applications.