Skip to Main Content
concrete lifting and leveling sinking sidewalk

Why You Should Fix Your Sinking Concrete Slab

Schedule A Free Inspection
Tuesday, December 23rd, 2014

If you begin to notice cracks between the bricks of your home, uneven sidewalks, pooling water in your driveway or patio or just general concrete cracking, it’s time to take a look at repair options. Slab settlement will only continue to worsen any of these problems if it is allowed to continue.

Three Common Reasons for Concrete Settlement:

concrete lifting and leveling sinking sidewalk

1. Changes in the soil’s moisture content

These changes occur naturally and can very rarely be prevented. Even expertly compacted soil can be subject to settlement due to freezing and thawing, expanding and contracting. Clay soil is the most susceptible to movement. When exposed to moisture, it holds on to it and expands in size. When the soil loses the water, it shrinks.

2. Wash-out of soil under the concrete

As water moves underneath the slab the soil is washed away leaving a void. The water can come from plumbing leaks, floods, rain and general erosion. Once the void is created, cracking and sinking is inevitable.

3. Poorly Compacted Fill Soil

During the construction of a home, driveway, patio or sidewalk soil is commonly moved around or spread out to get to the desired grade level. If compaction after this moving is not done properly, the soil will slowly compact itself, damaging the already installed concrete.

Seven Reasons to Fix Your Sinking Concrete Slab:

1. The problem will only get worse over time and will end up costing much more to fix.

2. The property’s resale value will decrease with every crack and sag.

3. Concrete that is out of level can cause ugly cracks in weak spots all around the property, in and outside of the home.

4. Uneven sidewalks and patios can pose a serious safety risk. Trip hazards can put your family at risk and also lead to unwanted liability.

5. Cracks in slab or brick can lead to water intrusion. This unwanted water can cause flooding, high humidity and mold growth in many different areas of the home.

6. Pooling water that collects in driveways or patios can create patches of ice in the winter posing another safety risk.

7. Slab settlement can cause further structural damage to the home including out-of-square doors, gaps in windows, water intrusion and leaning chimneys.

Looking to fix a concrete slab at your home? Contact Tar Heel Basement Systems to schedule a free estimate!

*Disclaimer: “Concrete leveling” means the process by which cracked, uneven concrete is stabilized, and in many cases lifted, by means of PolyRenewal™ polyurethane foam. Tar Heel Basement Systems does not guarantee that PolyRenewal™ can make your concrete perfectly level.

Publish Date:

Last Modified Date:

TarHeel Basement Systems Service Map

Our Locations

Fayetteville Location

3400 Walsh Pky, Suite 220
Fayetteville, NC 28311

Greensboro Location

611 Summit Ave, Suite 5
Greensboro, NC 27405

North Raleigh

208 Millbrook Rd. Suite C
Raleigh, NC 27609

Raleigh / Durham / Chapel Hill Location

3333 Air Park Road
Fuquay-Varina, NC 27526

Wilmington Location

2155 Enterprise Dr. NE
Leland, NC 28451

Winston-salem / High Point Location

2910 Griffith Rd
Winston-Salem, NC 27103