Foundation Cracks: Which Ones Are Dangerous?

Water-saturated soils can compromise your foundational integrity and cause cracks. Wide, horizontal ones are more dangerous foundation cracks. Whether you have hairline, vertical, horizontal or diagonal cracks, consultation with a professional structural engineer can help mitigate the damage. Catching foundation cracks early can help save time and money and reduce stress. A timely, thorough evaluation is necessary to assess the cracks and perform necessary repairs that preserve the structural integrity of your home.

Foundation Cracks Types: When to Worry about Serious Structural Damage

Are you shocked at the sight of a long horizontal or stair-step crack in your basement? You have every reason to feel worried, as cracks are a sign of significant structural pressure and can lead to foundational failure. If you are not sure whether the crack is dangerous or not, we have compiled below a guide to help you understand various crack types and which ones are a sign of major concern.

Did you know?

According to the National Association of Realtors, larger cracks wider than 5 millimeters are a cause of concern, especially if they are diagonal, horizontal or above the door frame, indicating stress on structural support frames or settling issues.

Here is your complete guide to foundation cracks and when you require immediate professional repairs.

Hairline Cracks

Minor temperature or humidity fluctuations can cause spider-web-like hairline cracks in your drywall. Home settling can also result in thin cracks, which are usually less than 1 millimeter wide and do not pose any serious threats. Keep an eye on them to see whether they are growing or require repairs. Apply a joint compound if you notice any change, and sand to smooth the surface.

Vertical Cracks

Vertical cracks usually appear where the wall meets the floor and are caused by foundation settlement. They can vary in length and width. If you notice a crack wider than 5 millimeters, schedule a consultation with a foundation specialist to address the problem in time and prevent costly repairs.

Fast Fact

Craks wider than ¼ of an inch require professional inspection and repairs, while those under ⅛ inch are only cosmetic and do not pose serious threats.

Horizontal Cracks

Horizontal cracks indicate serious foundation issues and are the result of structural movement due to expansive soils. Poor soil conditions, drainage issues and mixture problems inside the house can cause horizontal cracks. Ignoring them can result in foundation failure. If you are searching for foundation crack repair near me, consult with a structural engineer to understand the cause and discuss the measures required to strengthen your foundations and structure.

Diagonal Cracks

These are the dangerous foundation cracks signifying serious structural damage. Slanted at 45 degrees, these cracks are wider at one end and are often accompanied by sticking doors and windows. Diagonal cracks are caused by poor soil compaction, uneven settling or pooling water near foundations.

Remediation measures may include soil stabilization and structural reinforcement, along with foundation repairs.

Important fact

Roof leaks, plumbing issues, poor ventilation and moisture buildup in the walls can cause cracks, while soil issues and settlement, and construction defects are the primary reasons for foundational damage.

Conclusion

Understanding the difference between minor cosmetic cracks and dangerous foundation cracks is important. Not all pose serious threats. Multiple cracks clustered together show significant damage that requires immediate professional intervention. Taking care of your structure and prompt repairs results in preserving the structural integrity of your home and foundation.

 

 

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