Basement Slabs

Why Do Basement Slabs Sink?

Basement floors settle when the soil beneath them shifts, erodes, or compacts over time. Because basements sit below grade, water and soil movement are common culprits.

Common causes include:

• Poorly compacted fill soil during construction
• Water infiltration washing away supporting soil
• Sump pump activity or plumbing leaks eroding the base
• Natural soil consolidation over time

Left untreated, sunken sections continue to drop. Cracks form and spread. Moisture problems often follow. And what started as an uneven floor becomes a structural concern.

The Fix: Basement Slab Lifting

Basement slab lifting raises your existing concrete back to level using expanding polyurethane foam. We drill small holes, inject the foam underneath, and it expands to fill voids and lift the slab into place.

• Saves 50–70% compared to full replacement
• Done in hours – not days or weeks
• Walk on it the same day
• Minimal disruption to your finished basement
• Fills voids to prevent future settlement

Signs Your Basement Slab Needs Lifting

• Uneven or sunken sections of the floor
• Cracks forming along settled areas
• Gaps between the floor and walls
• Hollow sounds when you walk on certain areas
• Water pooling in low spots

If you’re seeing any of these signs, it’s time to get an estimate before the problem gets worse.