Spraynseal Instant RV Rubber Roof Repair is a UV resistant rubberized coating that stops leak on RV roofs, windows, and skylights. It will adhere to fiberglass, aluminum, EPDM and rubber roofs. This miraculous elastomeric formula will stay 500% flexible without cracking, peeling, or fading. Apply on wet or dry conditions. Dries in 10 minutes at 70 degrees Fahrenheit. Paintable when dry.