Repair Cracks In Concrete Walls In Your Home's Basement

Industrial & Manufacturing Blog

If your home's concrete foundation has shifted due to soil erosion and small cracks are visible in one of the concrete walls in your basement, you can repair the damage with the following steps. Once finished, consult with a company that specializes in foundation underpinning. Underpinning involves extending the depth of the current foundation so that it rests on a more stable surface, preventing additional damage in the future.


  • plastic sheeting
  • sponge
  • cleaning agent (designed for use on concrete)
  • towel
  • vacuum cleaner with hose attachment
  • tube of concrete patch
  • caulk gun
  • trowel
  • concrete sealer
  • paint roller
  • paint tray

Clean The Damaged Wall And Remove Loose Concrete

Cover the flooring in front of the damaged part of the wall with plastic sheeting. Pour a small amount of a cleaning agent that is designed for concrete onto a sponge. Use the sponge to remove visible dirt from the damaged portions of the wall. Rinse the sponge out with water and wipe the same parts of the wall with it. Dry the concrete surface with a towel. If there are small pieces of concrete that are wedged in between the cracks in the wall, use a vacuum cleaner hose to remove them. 

Fill The Cracked Concrete With Patch

Use a caulk gun to fill each crack with concrete patch. Press the flat part of a trowel firmly against each patched area to level the surface of each patched crack. If too much patch was added to any of the cracks, use a damp sponge to remove it. Wait for the concrete patch to harden. The thickness of the patch will determine how long you may need to wait for this to occur.

Apply A Coat Or Two Of Concrete Sealer To The Walls

Pour a container of concrete sealer into a paint tray. Cover each interior wall with an even layer of the product. Move a paint roller that is coated with sealer in straight lines to do this. Once the sealer has dried, add one more coat of sealer to the walls if you accidentally didn't cover the walls completely with the first coat. The sealer will provide the basement walls with additional protection from damage.

Consult with a foundation specialist at your earliest convenience. They will inspect your home's property and basement to determine what type of underpinning needs to be installed. Once the underpinning job is complete, your home's foundation will remain protected from damage.


17 August 2016

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