Quick Roof Clear Patch's remarkable bonding properties are the result of its proprietary blend of unique co-polymers and butyl rubber. It can be installed without the need for primer at temperatures as low as 20 Degree Fahrenheit and keeps on sticking down to -70 Degree Fahrenheit. It stops leaks instantly and repairs most roofing materials, gutters, flashings, RV's, mobile homes, trucks, trailers, skylights, garden sheds, camping gear and more. See-through Clear Patch creates repairs that are almost invisible.