There are a lot of ways that different foundation repair companies try to fix sinking concrete slabs. But some of these methods are more effective than others.
Foundation Underpinning
Many companies utilize foundation piers to lift sinking concrete foundations. These piers are made out of durable steel and work like underground stilts to stabilize and lift the foundation. Once the settling areas have been determined, the piers are attached to the foundation with brackets and installed underground. They are then hydraulically lifted to level the foundation slab.
For more information check out – Foundation Underpinning Repair Methods.
Resistance/Push Piers
Resistance piers, also known as push piers, are one of the most common kinds of underpinning devices. These piers are driven into the ground until they are able to anchor into the solid layers deep underground. Once they anchor into the stable soil, they can be used to lift and support the foundation. Our steel piers are durable and highly effective, giving you a solution that will last.
Helical Piers
Here at Bay Area Underpinning, we use helical piers for many of our slab foundation leveling jobs. These piers work like steel piers, but they are screwed into the ground instead of being driven into the ground.
Poly Foam Injection
Another solution that we offer for foundation leveling is polyurethane foam injection. In this method, we drill small holes into the slab and use these holes to inject a two-part urethane chemical mixture under the concrete. Once it is injected, the mixture expands into a foam. The expansion lifts the concrete and compresses soil to stabilize the entire foundation. Because the foam is ready for normal use again almost immediately after injection, this is a very versatile solution. This method can be used for patios or stoops, driveways, sidewalks, factory floors, and garage floors in addition to slab foundations.