Anvil Elastomeric, Smooth, Knife / Trowel Grade Caulk & Sealant is a heavy bodied, flexible, siliconized elastomeric caulk and sealant for filling and patching cracks and voids on masonry, stucco, concrete, wood, metal, brick, stone, marble, and glass prior to applying finish. Excellent for cracks, joints, openings around doors, window siding panels, entry pipes, vents, flashing, steps, and chimneys. Anvil Elastomeric, Smooth, Knife/Trowel Grade Caulk & Sealant provides excellent adhesion, long life, and is resistant to failure by expansion, contraction, or other joint movement. Fast drying and may be painted with latex or oil base paints. For use on interior or exterior surfaces.