(12) 20 oz. Cans. Hard, white, protective waterproof spray for cold pipe insulation. SURROUND is a convenient, ready-to-use spray-on pipe insulator. Dries to a hard, white, durable, stipple-effect coating that can be painted or primed when dry. Prevents sweating and dripping on pipes and other cold surfaces. Insulates water tanks, gutters, toilet tanks, etc. Repairs wrap-around style insulation. Adheres to galvanized, black iron, steel, brass, copper, and PVC piping. Nonflammable when dry.