AU-1 Elastomeric Patching Compound - Smooth Knife

An extremely flexible patching product with outstanding adhesive properties. It is uniquely formulated to provide a permanent repair for cracks in a wide range of substrates without shiners. Substrates to include but not limited to: Concrete, Tilt-Up, Stucco, Bricks, Masonry, Hardboard, Wood siding, and EFIS wall systems.