The subject of cracked foundation repair is a topic of great interest to homeowners because cracks are often viewed as a serious defect despite being a very common occurrence in homes with poured concrete foundations.
Foundation cracks should be repaired even if they are leaking or not because of the seriousness of the problem. Since many homeowners are concerned with how to repair foundation cracks, I wrote this post to provide relevant and related information such as why foundations crack, as well as the various available methods for properly repairing a cracked foundation.
Why foundations crack
The most common cause of foundation cracks is the curing process. Concrete is made of water foundation repair, cement and gravel and shrinks as it cures and dries. Concrete shrinks by 1/16 of an inch over a distance of 10 linear feet.
If there is a significant temperature drop overnight, the cured concrete will contract and be affected by the temperature. When a foundation is poured in intense heat and sun, it can crack because of thermal expansion.
The settlement of the soil beneath the foundation walls causes the basement cracks. This can happen if your home’s footings aren’t wide enough. If the soil around your home is saturated with water, or if we haven’t had precipitation for quite a while, there could be problems with the foundation. It is considered to be a structural crack when the crack width is greater than 1/6 inch.
The soil can cause basement wall cracks and the hydrostatic pressure can cause basement leaks. During dry periods, the soil around your foundation shrinks and can cause your foundation to settle, which can lead to new basement wall cracks.
The upper part of the wall is usually cracked by frost damage and the freeze-thaw cycle. In most cases, water from your downspouts saturates the soil, as the soil freezes it exerts considerable pressure on the basement wall Heavy equipment travelling too close to the wall causes horizontal cracking.
How foundation cracks are repaired
We use one of the following methods to repair the cracks. There are three methods for foundation crack repair.
The method of injecting a two-part glue into a crack is referred to as an “epazo crack injection”. The injection ports that are installed at the bottom to the top of the crack are about one foot apart. Once the crack is full, the material is injected from the bottom to the top and then cured inside the crack, forming a rigid material.
When we inject foundation cracks, we use the other chemical, Polyurethane. Typically used in actively leaking cracks or cracks that have been repaired before, polyurethane is injected into the crack from ports that are drilled beside it halfway through the wall. When dealing with leaking or previously repaired foundation cracks, the injection pressure for polyurethane is much higher than that of epoxy and this makes it the method of choice.
There is an option of repairing the crack outside. The traditional method of foundation crack repair is external. The method involves cleaning the wall and applying a patch to cover the crack. External crack repair is effective at preventing basement leaks, but it does have limitations, such as it does not fill-in the crack, it is weather dependent, and it costs more than other repair methods.
What it costs to repair a cracked foundation
The cost to repair a cracked foundation can vary.
Depending on the company, the foundation crack injection price can range from $350 to 800.
stabilization of a crack is needed. The cost of carbon fiber reinforcement is $75 each.
Depending on ease of accessibility, the cost of exterior crack repair can range from $1,000 to $15,000.