Foundation Waterproofing

Information current as of

This isn't an option, it's a requirement. Your foundation must be waterproof or you might as well not live at your house. This is generally not done by the average homeowner, professionals are called in for this bigger task. Without this step you're asking for a host of problems, even going so far as to having the house cave in (after many years of problems of course). Moving a house off its foundation and rebuilding it can be a very expensive project.

If you're in an emergency situation you can try that black tar type stuff, but its not recommended as a permanent solution. It typically hardens and splits causing new leaks with 5 years. You may have seen it used before, but usually its for "damp proofing" not true waterproofing. If you can't afford a professional and are skilled enough to try this on your own we recommend that you:

• do your research, buy books, visit internet web sites
• talk to qualified professionals at various hardware stores (the bigger chains such as Home Depot and Lowe's often hire knowledgable experts)

Many homeowners doing this on their own will use a liquid membrane substance. Just be sure to apply it evenly and follow all directions carefully.

Things to look for:

• Cracks: if you find cracks that are wider at the top than the bottom, or cracks that are open, check with a structural engineer about how to fix it. This can indicate a major problem.
• Yard slope: make sure your yard slopes away from your home so that water runs away from the foundation.
• Clean gutters and drain pipes: clogged gutters and drain pipes will cause water to run directly next to the foundation which can affect both the foundation and the basement.

Do you have a crack in the outside wall? Do these steps to help with foundation waterproofing:

First dig away from the wall putting the dirt on a tarp. You need to clean the area with the crack. Use a stiff brush (can be wet) and shovel to remove excess dirt. Once dry chisel out the crack and fill it with a mixture of sand and cement. Cover the crack with the masonry mixture being sure to go several inches on either side so it can fill the crack and adhere to the existing wall. Let this dry then paint over it. Refill the dug out area and place plants farther away from the foundation so water isn't as drawn to that area.