Waterproofing Basement Wall

Waterproofing Basement Wall

You can scarcely credit fixing the floors and installing a sump pump without making some attempt at waterproofing walls all around the basement inside and out, getting waterproof walls is not as simple as one might think. A lot of the compounds being sold as waterproofing are really just damproof compounds the makeup of each is different and therefore so are the results.


Damproof compounds cost less and that is probably because they really do not do much. Using them is like putting a Band-Aid on a gaping wound. It will hold for a few seconds and then the blood will begin gushing again. It only retards water not stop it completely. They consist of asphalt or tar mixed with other ingredients. Spraying them on foundations before back-filling usually will slow down the transmittal of water vapors, that is about all they can do.

Waterproofing Compound

Water proofing compounds are very different in composition and there are quite a few of them on the market. They come in urethanes, modified asphalt, clay or rubber based compounds. It comes in a spry or sheets. They are used to control ground water and can be used to repair foundation cracks.

The Hydrostatic pressure that builds up against the outsides of the foundation can create cracks in the interior walls. These sheets can work wonders for a wall that has been installed structurally sound.

The basement walls often allow water vapor in even if there are no cracks in them. A spray on sealer will easily solve this problem.

These are the steps to take to waterproof basement walls:

  1. Clean the walls removing all loose rubble, paint chips and dirt. A wire brush will do the trick.
  2. Use an injection epoxy to fill all holes and cracks. Let this dry completely. Drying takes a day or two. Sand the surface then brush away any dust particles.
  3. The sealant gets painted on just like house paint. Let each coat dry between coats. The application should be done in small sections making certain that it overlaps the previous ones to avoid any gaps.
  4. Now you need to do a visual inspection of the outside of you home, repair any holes and cracks found there. You may also want to check for the run off and your gutters to be sure they are not dumping too near the house.