Peel Stop Triple Thick is ideal for interior or exterior surfaces like previously painted wood siding, windows, baseboards, trim, doors and fences. It also can be used to lock down peeling paint on metal gutters and downspouts, concrete, PVC/plastic, plywood, brick, stucco, masonry, aluminum, aluminum siding, galvanized steel and fiberglass. In ASTM D2370 independent lab tests, Peel Stop Triple Thick's flexibility was confirmed. Peel Stop Triple Thick dries white for added hide. It dries to the touch in 30 minutes and can be topcoated in as little as two hours. The low odor, low VOC, water-based formula can be used under or over any oil-base or water-based topcoat. It is available in quarts, gallons and five gallon pails.