A brushable, clear sealant that forms a durable, elastic seal. Can be applied to practically any material in any weather. Ideal for sealing roof valleys and repairing small areas on wood, asphalt, fiberglass, slate, tile, and metal roofs. Seals and rustproofs metal surfaces such as vents, roof flashings, and exterior duct work. Also seals and waterproofs concrete surfaces, chimney crowns, and retaining wall caps. It is paintable when cured and is mildew-resistant. Nontoxic when fully cured.