Zinsser® Peel Stop® triple-thick, high-building binding primer is an interior-exterior product formulated to lock down peeling paint and seal weathered surfaces. It penetrates to seal, fill and level worn and weathered substrates to provide a more uniform surface for the topcoat. It offers easy flow and leveling and can be applied up to 30 milli-inches wet without sagging. The primer dries white for added hide and to the touch in 30 minutes so that it can be top-coated 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.