Out of nowhere, it showed up: a long, visible crack in your foundation.
It doesn’t look too bad, but you’ve heard that cracks are often a sign of serious structural problems. Should you worry? Or should you not?
Some cracks are just that: cracks. They pose no real danger to your home, and all you need to do is patch them up. But others can be a symptom of a larger problem. Either way, the first thing you need to do is fill that crack.
There are three methods professionals use to repair cracks in a concrete foundation. If you’re unsure which one is the most suitable for your home, we explain the basics of each here.
Epoxy Injection
Epoxy injection is a common method used to fix cracks of all sizes in concrete foundations. To start, we place ports over the crack. Then, we inject a 2-part epoxy, which acts like a glue, at a low pressure to seal the crack.
However, it’s crucial to know what caused the crack before using this method. If the crack is due to settlement, the foundation needs to be stabilized first with a solution like helical piers foundation repair.
Strapping
Another method we use to repair cracks in concrete foundations is strapping, which involves placing metal straps across the crack and securing them to either side. This bonds concrete sections together and prevents the crack from opening back up. Typically, we use this method for homes built on active soil, like soil with high clay content, which swells and shrinks rapidly when exposed to moisture. These constantly changing soil conditions can cause foundation movement and subsequently, cracks.
Rebar Dowels
The last method we use is rebar dowel reinforcement. Rebar (reinforcing bar) dowels are steel rods that we use to help concrete withstand tension. We embed dowels on either side of the crack and use a new rebar to connect these dowels to the concrete.
We only use this method for extreme cases—for example, on hillside foundations experiencing lateral movement or downhill creep.
Causes of Concrete Foundation Cracks
Understanding what causes cracks in a concrete foundation can help you protect your home. Cracks may look small at first, but the reason behind them often tells a bigger story. Knowing the cause makes it easier to choose the right way to repair concrete foundation cracks.
Natural Settling of the Home
Every home shifts a little as it ages. This is called settling. Over time, the weight of the house presses down on the soil beneath it. Small cracks can form in the foundation as the structure adjusts. Most of these are normal, but they should still be watched closely.
Soil Shifting or Water Pressure
Soil is always moving, especially after heavy rain or long dry periods. When the ground swells with water, it pushes against the foundation walls. When it dries, the soil shrinks, leaving gaps. This cycle creates stress and leads to cracking. Poor soil conditions, like clay that expands easily, make the problem worse.
Poor Drainage and Weather Conditions
Water is one of the biggest threats to any foundation. If your yard drains poorly, rainwater or melting snow can collect around your home. This added pressure weakens the foundation over time. Extreme weather, such as freezing and thawing, also makes cracks worse.
Concrete Foundation Crack Repair: Key Takeaways
Not every foundation crack means serious trouble, but it’s always smart to take them seriously. If you notice a crack in your foundation, the safest step is to have a professional inspection. Cracks can appear for many reasons, including soil settlement, plumbing leaks, temperature changes, or even natural disasters.
To protect your home and fix concrete foundation cracks the right way, you first need to know what caused them. At Bristol FX, our experts provide free, thorough inspections to identify the root of the problem. Once we understand what’s behind the cracking, we’ll recommend the most effective and affordable foundation crack repair methods to seal the damage and prevent future issues.
With the right solution, you can stop worrying about recurring cracks and keep your home strong, safe, and stable for years to come. Contact Bristol FX today to schedule your inspection and explore professional concrete foundation crack repair options tailored to your home.
Frequently Asked Questions About Concrete Foundation Crack Repair
What does a concerning foundation crack look like? A concerning foundation crack is usually wide, uneven, or growing over time. Vertical hairline cracks are often less serious, but horizontal or stair-step cracks may signal structural stress. If water is seeping through or the crack keeps getting bigger, it’s time to fix concrete foundation issues before they worsen.
What’s the best time of year for foundation repair? The best time for foundation repair is during mild, dry weather. Spring and early fall are ideal because the soil is more stable. Extreme heat, heavy rain, or freezing temperatures can affect both the foundation and the repair materials. Planning concrete foundation crack repair during stable seasons helps ensure lasting results.
Can a foundation crack be fixed from the inside? Yes, many cracks can be repaired from the inside using epoxy or polyurethane injections. These methods seal the crack and block water entry. However, if the crack is caused by soil pressure or poor drainage, outside work may be needed too.