Gorilla water-proof patch and seal liquid is a flexible, rubberized coating that seals out water, air and moisture. application is easy. it can be applied by brush, roll, trowel, dip or pouring. once applied, the self leveling formula smoothly covers small gaps and cracks ensuring a watertight seal. when dried, gorilla water-proof patch and seal liquid is paintable and temperature/uv-resistant resulting in lasting repairs.