Gorilla® Waterproof Patch & Seal Liquid is a flexible, rubberized sealant that forms a watertight barrier against water, air, and moisture infiltration. The self-leveling formula flows into gaps and cracks on its own, producing a smooth, uniform seal without demanding precise application technique.

Once cured, the coating is paintable and resistant to UV exposure and temperature fluctuation, making it suitable for sustained use in both indoor and outdoor settings. Approved surfaces include roofs, gutters, skylights, flashing, chimneys, PVC joints, windows, and RV exteriors. Not intended for use inside a firebox or chimney stack.

The product can be applied by brush, roller, trowel, dip, or pour, accommodating varied surface types and job conditions. Each unit weighs 2.64 lbs and is sold individually. Ships via parcel carrier.