Henry® 208® Wet Patch® Roof Leak Repair stops leaks instantly on wet or dry surfaces – even in driving rain. Features and benefits Stops leaks instantly, even in standing water Apply from 20°F to 120°F (-6.7°C to 49°C) 100% wet surface adhesion per ASTM D3409 No blistering, sagging or sliding per ASTM D4586 7 year limited manufacture warranty