Over time, many homeowners face the issue of foundation settlement. This can result in visible cracks, sunken floors, or doors and windows that no longer close properly. The root cause often lies beneath the surface—unstable soil that no longer supports the structure as it should. If left untreated, this issue can compromise your home’s safety and value.

Why Does a House Foundation Sink?

House foundation sinking occurs when the soil beneath the home shifts, compresses, or washes away. This often results in a void under the house, weakening the structural support. Traditional repair methods can be costly and invasive, but modern solutions now offer a faster, more efficient fix.

The Power of Polyurethane Foam Foundation Repair

Using polyurethane ground injection, technicians can target and fill gaps under your foundation without major disruption. The process involves injecting high-density foam that expands to compact loose soil, fill voids, and lift the slab back to its original level. This is often referred to as slab lifting services or home

1. Soil Testing

Conduct a soil test before the injection process to determine the target depth for ground improvement and assess the soil’s condition.

2. Drilling Through Concrete

Drill holes through the concrete foundation using a rotary drill. The maximum drill depth is 2.5 meters.

3. Pipe Installation & Foam Injection

Install aluminum pipes with a diameter of 16 mm and a maximum length of 3 meters. Inject polyurethane foam through the pipes to stabilize and strengthen the soil beneath the foundation.

4. Level Monitoring

Record elevation levels after the injection to verify ground stabilization and monitor for any future settlement.

Benefits of the PU Foam Method

• Non-invasive: No heavy excavation required

• Fast and clean: Most jobs are completed within a day

• Durable: Foam resists water, pests, and long-term degradation

• Precise: Ideal for crawl space floor repair and small voids

Whether you’re dealing with house floor void fill, sunken floor repair, or simply want to protect your home from future settlement, polyurethane foam foundation repair offers a safe and proven solution.