FLEX SEAL® is a rubberized leak sealer that seeps into cracks and holes to seal out air and moisture. When dry, FLEX SEAL® is a long-lasting, watertight, paintable, flexible rubber coating that won't sag, drip, crack or peel. It seals out water and lasts for years. One can treats 2-12 square feet. Once dry FLEX SEAL® can be painted any color. FLEX SEAL® the easy way to coat, seal and protect. No need for prepping, works wet or dry. Use FLEX SEAL® the liquid rubber sealant coating on roof leaks, gutters, skylights, hoses, windowsills, PVC pipes, flashings, duct work, foundations, basements, chimneys, downspouts, vent pipes, A/C drip pans, RV's and Campers, Trailers and so much more!