Uneven concrete slabs

Concrete Services

Uneven concrete slabs

Soil shifting and erosion leave hollow voids under your concrete, causing slabs to crack and sink unevenly. Our high-density polyurethane foam fills these voids to lift and level the surface permanently.

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What causes high humidity in the crawl space?

Section diagram

It is natural for the soil beneath your concrete to change over time as it reacts to shifting weather patterns. However, once a concrete slab loses its underground support, it cannot stabilize on its own.

Root causes 3 most common

Improper drainage channels water directly beneath your concrete, washing away the dirt and leaving structural slabs completely unsupported.

Dirt that was loosely packed during initial construction naturally compresses and sinks over time, creating empty gaps under the heavy weight of the concrete.

Severe dry heat causes clay-heavy soil to dry out and shrink dramatically, leaving a hollow void that forces concrete slabs to drop and crack.

Your symptom matched

These issues often share the same root cause — inspect them together

or call 1-833-584-1049

Other structural signs
Sinking driveway, walkway, patio Cracked or sinking pool deck Sinking slab foundation Void under slab Ugly concrete

What it looks like

Sinking driveway, walkway, patio

Self-diagnosis guide

Not every cracked slab is an immediate hazard, but left unchecked, it can lead to costly foundation issues or trip liabilities. See where your property stands.

Low urgency High urgency
Low urgency

Can wait a few weeks

Slight condensation on ducts or pipes only on humid days.
Mild damp smell after heavy rain.
No visible standing water or wood rot.
High urgency

Call us now

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FAQs

Sagging floors frequently asked questions

Find answers about our services and process

Yes. Our floor crack and leaky window solutions provide lasting results that are compatible with your perimeter drainage system. They will not crumble, flake off your walls, or fail due to the natural expansion and shrinking of the concrete.

Helical deck piers are the best alternative to traditional poured concrete. Steel support brackets are stronger, the installation is minimally invasive, and you can build on them immediately after installation.

Still have questions?

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Free inspection · Same-week availability · Permanent encapsulation solutions.

or call 1-833-584-1049