Solar Seal # 900 is a Terpolymer Rubber Adhesive / Sealant. A high performance colored alternative to silicones and urethanes. Used in roofing, siding, windows & doors. Adheres to most construction materials, vinyl, metals, fiber cement boards, over Kynar coatings, on wood ( included primed cedar ), sky lights, termination bars, plastics, copper finishes, PVC trim boards, glass, clay tiles, curtain walls, cured concrete; it will bond tenaciously to most common building products. 3 Tubes White