Void Filling

Void Filling & Soil Stabilization in Knoxville, TN

When soil washes out from beneath a slab or foundation, the void it leaves behind is a ticking clock. Knoxville Concrete Lifting fills subsurface voids and stabilizes weak soils with structural polyurethane foam — a permanent solution that compacts loose soil and provides long-term load support.

When You Need Soil Stabilization

Sinkhole-prone areas of Sevier County, properties with chronic erosion, slabs over collapsed buried debris, and commercial sites with deep voids beneath loading docks are all classic candidates for polyurethane soil stabilization. We can fill voids ranging from a few cubic feet to several truckloads.

Our Process

We probe the void with a fiber-optic camera, calculate volume, and inject expanding polyurethane in measured lifts. The foam fills every contour of the void, then densifies the surrounding soil column as it cures.

Service Areas for Void Filling & Soil Stabilization

We provide void filling & soil stabilization across every Knoxville neighborhood and throughout Blount and Sevier Counties. Popular service areas include:

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FAQ

Void Filling & Soil Stabilization — FAQ

Can polyurethane fix a sinkhole?+

For shallow soil voids and erosion cavities, yes. True bedrock sinkholes require geotechnical evaluation, which we'll coordinate when needed.

How do I know if I have voids under my concrete?+

A hollow drumming sound when you tap the slab, sudden settlement, or visible erosion at the slab edge are all warning signs.

Free Estimates · Fast Scheduling

Need Void Filling & Soil Stabilization in Knoxville?

Call or request your free estimate — most jobs scheduled within 1–2 weeks.