Pan-Spray is an effective, easy-to-use water proof rubberized coating that won't chip, flake, or peel. It's ideal for sealing out rust and corrosion as well as repairing leaky condensate pans, cooling towers, swamp coolers, roofing, gutters, and down spouts. Pan Spray is the perfect solution for emergency and permanent repair. It is a quick, easy and economical repair on troublesome leaks. Use on condensate pans, swamp coolers, humidifier pans, plumbing and pipe fixtures, roofing, downspouts or gutters.