For residential, commercial and industrial applications. Ideal for use on roofs, gutters, skylights, windows, doors, flashings, walls, foundations and many other surfaces. Seals immediately. Adheres to almost anything including metal, wood, fiberglass, plastic, HVAC, structural concrete, concrete block, brick, smooth BUR, smooth SBS, smooth APP, EPDM, TPO, Hypalon and PVC surfaces. Easy to apply, forms an incredibly tough and durable repair.