3 Ways to Waterproof Your Basement - wikiHow
Oct 29, 2019· Then, apply 2 coats of concrete sealer to your basement walls, letting the sealer dry for 2 hours in between coats. Next, apply 3 thin coats of waterproof paint to protect the walls from small, occasional leaks. Finally, let the waterproof paint dry for 24 hours. To learn how to install a sump pump to waterproof your basement, scroll down!