The Titebond 9.5 oz. WeatherMaster Red Metal Roof Sealant is a premium-grade, superior polymer formula that offers unbeatable adhesion to all metals, including Kynar coated metals, aluminum, galvanized steel, copper and most common building materials. It can be extruded in extreme temperatures, remains permanently flexible and will not shrink, adheres well to wet and damp surfaces and is dust and dirt resistant. Keep roof surfaces protected and safe from the elements by applying this roof sealant.