Anvil UltraSeal Elastomeric Roof Coating, 5 Gallon Anvil #1250 Ultra-Seal #1 Elastomeric Roof Coating is our premium high build 100% acrylic elastomeric roof coating based on the latest chemical technology Designed to seal, protect, and insulate well drained roof surfaces USES: Mobile Home Roofs, Metal Roofs, Built Up Roofs, Concrete Roofs, Asphalt Shingle Roofs, Wood Roofs Do not use on flat roofs; Do not use on PUF (polyurethane foam roofing) Roof must have adequate pitch to allow water to run off