A concrete slab foundation provides the support your home needs to maintain its structure. When the soil under the slab compresses or shifts, then the foundation can sink or crack. This could pose a hazard to your home so repairs are needed to restore the position and strength of the slab. Foam injection is one possible solution for foundation repair. Here's a look at how the process is done and why it might be a good choice.
How Foam Injection Foundation Repair Works
The foam used for this method of foundation repair is a type of polyurethane foam that expands and hardens once it's injected. The expansion of the foam is what raises the foundation back into place and the strength of the cured foam provides additional structural support. The foundation repair contractor has to assess your home first to decide if foam injection is the right choice for making repairs.
If so, the damaged area is noted and prepped for the work. This could entail having utility lines, plumbing pipes, and rebar detected and marked. Flooring might be removed to access the concrete slab. Then, small holes are drilled in strategic places so the foam can be injected in them to raise the sunken area of concrete. The contractor then uses a hose with an injection tip on the end to drive the liquid solution into the soil through the hole. The liquid quickly turns into a foam that expands and begins to lift the foundation.
The contractor checks the work with a level as it progresses to determine the exact amount of foam to inject. After the foam is injected, the holes are filled and the flooring is replaced so the work area is restored to its original appearance.
Why Foam Injection Is Preferred When It's Suitable
One reason injecting foam is a preferred method of foundation repair is because it is not very disruptive to your home. No heavy equipment or excavation is needed. The truck can stay at the curb since all the contractor needs is the hose to fill the holes. Foam injection repairs are also fast. They require a fraction of the time needed for some other types of foundation repair and since the foam hardens quickly, you can walk on the floor soon after the work is done. Depending on the extent of your foundation damage, the work might be completed in a few hours on a single day.
The contractor may have a few options for repairing your foundation, so the most effective one will be recommended. If using foam injections is one option for you, then you may want to choose it for the speed and convenience it provides. Plus, the process doesn't leave behind a mess that's difficult to clean up once the contractor leaves. Foam injection could put an end to your foundation worries and protect your house from further damage by stabilizing the slab and soil underneath it.