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Basement Cracks

 

Causes

Regardless of their construction, walls crack because they are overloaded or because the structure has settled or heaved. Vertical and angled cracks are usually caused by settlement or heaving. Horizontal cracks are more likely to be caused by lateral pressure.

Understanding these foundation cracks is the first step to fixing your foundation. As the illustrations below show cracks come in many forms and have varying meanings. Cracks of .064” or less generally do not leak. Wall cracks that are wider at the top than the bottom indicate settlement.

If you foundation has cracks it is time to contact a foundation expert to diagnose the cause and severity of these cracks. This analysis will also let you know if you are in the need for foundation repair.

My Foundation Repairs always recommends that you contact an engineer before having foundation repair work done on your home. There are multiple solutions for wall cracks based on the type of crack you see. If wall cracks are caused by bowing or leaning walls, wall anchors or carbon fiber strips can be installed to pull the walls back into their original position. Both of these options are strong, long lasting solutions. Cracks can also be filled with a grouting solution or epoxy based injection to prevent water stains or leaks. It is important to depend on your local expert in foundation repair to make sure the right solution is found for your type of foundation crack.

Basement Crack Types and Their Causes

 
 
1. Angled and Horizontal   2. Angled
     
     
 
Bow
 
 
     
     
 
Settlement
 
     
3. Vertical and Horizontal   4. Center Converging
     
     
 
Bow or Settlement
 
 
     
     
 
Bow or Settlement
 
     
5. Horizontal   6. Stair Step
     
     
 
Bow
 
 
     
     
 
Heave or Settlement
 
     
7. Vertical   8. Vertical
     
     
 
Settlement or Heaving
 
 
     
     
 
Settlement
 
     
9. Vertical wider at top   10. Wider at top than bottom
     
     
 
Side Settlement
 
 
     
     
 
Differential Settlement
 
     
11. Vertical wider at bottom   12. Stair Step
     
     
 
Center Settlement
 
 
     
     
 
Differential Settlement
 
     
 
 
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My Foundation Repairs - 15657 S Keeler Terrace, Olathe, KS 66062 - 913.393.0010

info@myfoundationrepairs.com