Foundation Cracks: Are They Serious?

If you have notice foundation cracks either from the outside or your home, or inside your basement or crawlspace, naturally you are very concerned. Your biggest question: It is serious? At My Foundation Repairs, we have a network of partner contractors that are available to provide you with a foundation inspection. Your contractor can provide you a quote, and come up with a repair plan specific to your situation, if needed. Let’s take a closer look at foundation cracks, and when an inspection is recommended.

Hairline cracks

There are cracks in your foundation that although concerning, do not pose an immediate threat. These are called hairline cracks. As a rule, these cracks are are less than 1/10 inch or the size of a penny. They often run vertically. In this case, we recommend that you monitor the crack closely to see if it grows wider or longer. If the crack stays the same it is most likely non-structrual, and likely caused by the curing process when the foundation was built. If you do see that the crack grows in size, then it would be a good idea to have an inspection to rule out structural issues.

Structural Foundation Cracks

When checking your foundation, there are certain cracks you should be on the lookout for. These are cracks that can mean you have structural problems, and in many cases repairs:

Diagonal foundation cracks can be a sign of hydrostatic pressure, and if discovered, should be inspected by a professional.
  • Horizontal cracks: This type of foundation crack is most often caused by hydrostatic pressure. Hydrostatic pressure is caused by saturated soil that presses against the foundation that leads to the cracks as well as bowing walls. Water beneath a foundation can also cause shifting that leads to horizontal cracks.
  • Diagonal or “stair step” cracks: Similar to horizontal cracks, these are seen in brick and mortar foundations. This type of crack is also caused by hydrostatic pressure and water in the soil beneath the foundation.
  • Multiple vertical cracks: While hairline vertical cracks are cause for less concern, multiple larger vertical cracks can indicate a problem with your foundation’s footing and are a cause for concern.

When inspecting your house for foundation cracks, a good rule of thumb is when you have wide cracks, or frequent cracks, then you should contact a professional for an inspection.

There is a Professional in Your Area to Help You

At My Foundation Repairs, we have a nationwide network of foundation repair contractors that are ready to serve you. When you contact us, we will put you in contact with a foundation repair specialist that is experienced, and highly qualified to address your specific needs.


Your foundation is the heart of your home’s stability. Everything rests on it. That is why you should not take cracks in your foundation lightly. My Foundation Repair contractors work with foundation repair products manufactured by ECP (Earth Contact Products) such as helical piers, push piers, and wall anchors. Your My Foundation Repair contractor will inspect your home to determine what repairs are needed and let you know the best type of products to repair your foundation. Contact us today for an inspection, and we will get you on the road to repair!

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