Hairline Crack In Basement Wall

  • Tanya Schifone
  • June 15, 2012 5:14 pm

Hairline Crack in Basement Wall

The best way to fix a hairline crack in your basement wall is with a high pressure, polyurethane-based crack repair kit. While caulking and low pressure injection methods are a big less “simple,” they are quick fixes and 1-5 years down the road you will find yourself repairing the crack again. Here is why high pressure kits, like the Foundation Armor concrete repair kit, are more effective:

  1. The Foundation Armor concrete repair kit uses aluminum ports that are injected into he wall and intercept the crack.
  2. The 5,000+ PSI injection gun moves the polyurethane through the injection ports to the back of the crack.
  3. The polyurethane reacts with water (either present or added) and expands 30-40X its volume to fill the crack from the back to the front.
  4. Once dry, the bond between the polyurethane and concrete is permanent and will always remain repaired.

There is a difference between a hairline crack and a spider crack. Learn more about spider cracks.


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