Basement waterproofing sealants are used to coat the foundation walls, floor and slabs of a home. They are applied as a thick liquid and then harden to form a waterproof barrier.

Is water seeping into your home's lowest level? Learn how to find the source of the leak, and how to go about waterproofing basement walls.

Seal Exterior Foundation Wall Basement foundation walls can be sealed against water with a liquid synthetic membrane, solid sheets of bentonite or synthetic sheet membrane.

The good news is that there are steps you can take to waterproof your basement to make it safer and much more usable. Here, I’ll explain how to waterproof the inside walls of your basement.

Building science prescribes treating a crawlspace like a mini-basement. That entails sealing up any exterior vents and insulating inside of the exterior walls.

Learn basement waterproofing techniques to keep your house safe and clean or to help refinish a basement. Find out basement waterproofing techniques.

Exterior excavation: Exterior waterproofing involves excavating 6 to 8 feet down to the foundation wall footer and correcting drainage by installing new drainage tiles or a French drain system.

Exterior waterproofing is typically using polymers and membranes to shield the exterior basement walls and installing an underground trench drain.

Exterior excavation: Exterior waterproofing involves excavating 6 to 8 feet down to the foundation wall footer and correcting drainage by installing new drainage tiles or a French drain system.