So, you’ve noticed a crack on the wall, basement, or around doors and windows—and you’re wondering if you should be concerned. That’s a great question! Cracks can be a sign you have foundation damage that could put your house’s structure at risk. But not all of them are equally as serious.
How do you tell what’s happening? Below, you’ll find a handy explanation of common causes of cracks, what to look for, and when to call a foundation expert (like us) to check out the issue for you.
What Causes Foundation Cracks?
Assessing cracks begins with knowing what may have caused the issue in the first place. The most common reasons behind foundation cracks are:
Normal Shrinkage as Concrete Cures
Freshly laid concrete shrinks a bit as it cures. Shrinkage cracks are very thin, less than 1/16-inch wide. As long as they don’t widen, they are typically not something to be concerned about.
Settlement Over Time
Houses can shift a little as a result of loose backfill and soil erosion. Minor settling is not a concern, but if the situation continues, it can cause “differential settling” — meaning the soil becomes significantly uneven, leading to foundation damage.
Soil Expansion and Contraction
As seasons change, the dirt under your house shifts. Moisture causes the soil to expand, while dry spells cause it to shrink, and this movement puts pressure on your foundation. Minor pressure can result in small cracks, while significant expansion can lead to large, problematic cracks.
Moisture Intrusion
Faulty drainage from gutters, irrigation, and improperly sloped lawns can allow moisture to linger around your exterior and make concrete foundations deteriorate. Cracks are a common sign of this problem.
Structural vs. Non-Structural Cracks: How to Know the Difference
Some cracks are non-structural defects, meaning your concrete slab is still secure. That said, some can indicate your foundation is breaking down, so it’s a good idea to know the difference. Here’s a quick overview of cracks you may notice:
Non-Structural (or Cosmetic) Cracks
These lines visibly mark interior and exterior walls but don’t immediately put your house’s structural integrity at risk. Some indications these fractures are cosmetic include:
- Narrow, hairline appearance – Cracks no wider than 1/10 inch don’t usually pose an issue, but if they widen, have your foundation inspected.
- Vertical marks – Since your home’s load can pass evenly on both sides of this type of crack, they’re not often a structural issue. But they could allow moisture to sneak in, so you might want to seal them.
Keep in mind that even small cracks can get worse over time. So, keep an eye on them and reach out to a foundation expert if you notice any changes.
Structural (or Foundational) Cracks
Cracks are a common signal your foundation is shifting unevenly or is damaged. A reputable firm (like ours) will tell you whether the issue is a concern. Here are some initial clues your cracks are related to foundation damage:
- Horizontal look – Lines that stretch across first floor or basement walls are caused by pressure from expanding soil or moisture, making them a serious issue.
- Stair-steps – Cracks that rise up in concrete blocks or bricks in a zigzag pattern are a sign of differential settling. This uneven settling can seriously damage your foundation.
- Diagonal cracks — Any defects that run at an angle mean your house is settling unevenly. They may or may not be serious, but they should definitely be assessed.
- Worsening appearance – If cracks grow longer or wider, that’s a problem that should be checked, especially if cracks are wider than 1/8 inch.
- Moisture intrusion – Anytime water gets into your home through a crack, have the issue diagnosed right away.
- Cracks in a ceiling or floor — Breaks that run across the ceiling and down a wall, or that appear in concrete in your basement floor, are usually structural and need assessment.
Get Peace of Mind with a Free Consultation for Your Tulsa Area Home
Anything that hints at structural issues should be evaluated, because foundation problems worsen as time passes—and that can be costly. It pays to call the professionals when you’re wondering about your home’s safety.
As an experienced team with a commitment to honest answers, Edens Structural Solutions is here to help! Reach out for a free consultation and assessment to see whether your foundation needs care. If it does, we’ll provide solutions that give you lasting peace of mind.
