Kilz Adhesion Primer is an interior/exterior, water-base, modified-acrylic primer specifically formulated to bond to a variety of tough-to-paint surfaces. Its advanced chemistry provides a sound anchor for topcoats while reducing or potentially eliminating the need for sanding dense, glossy surfaces including Kynar, PVC, vinyl, Formica, glass, tile, glazed brick, glossy finishes, fiberglass and metals.