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Expanding Contracting Slabs

If you suspect that your home may have been damaged by concrete slabs pushing against each other, sometimes referred to as street creep, or that it has any other foundation problem, we're the contractors for you.

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At Baker’s Waterproofing, we specialize in repairing structural issues of all types, and we have warrantied concrete solutions that will permanently solve your problem.

Concrete that lacks sufficient expansion joints will move and crack. We have solutions that will relieve slab-to-slab pressure, slab-to-foundation pressure, and slab cracking caused by failing expansion joints.

We provide free, no-obligation foundation repair quotes throughout our Western PA and Northern West Virginia service area, including Clarksburg, Morgantown, Pittsburgh, the surrounding areas of Wheeling, Beaver, Bethel Park, Fairmont, Cranberry Township, Greensburg, Washington, and nearby. Call or e-mail us today to schedule an appointment!

What Causes Slab Collision?

Street creep is a common foundation problem that’s caused by the thermal expansion and contraction of concrete streets and pavement surrounding a home.

Like many materials, concrete expands when it’s hot and contracts when it’s cold. Contractors place expansion joints in sidewalks, driveways and other exterior slabs so that temperature-induced expansion and contraction won’t cause a slab to crack.

Expansion joints divide a large expanse of concrete into individual slabs that can expand and contract independently. Temperature fluctuations throughout the seasons will cause these joints to widen in the colder months and narrow during hot weather.

Concrete problems start to become an issue during the cold winter months when the widened joints become filled with materials like sand or gravel.

As temperatures rise again during warmer weather, the concrete expands. But if joints have filled with sand and gravel, they can no longer absorb this movement. Instead, one slab will push against another.

Once they’re filled with debris, expansion joints can no longer do their job. The entire expanse of concrete expands as a single unit, causing the street to “creep.” Street creep exerts tremendous pressure at the edge of the concrete, where a driveway meets a garage slab or a house foundation wall.

Damage from expanding and contracting concrete slabs is a slow process. However, over time, the movement will add up to several inches, which will mean potentially serious damage to your foundation.

Telltale Signs Of Slab Collision Damage

Concrete issues can be detected by these 4 common signs:

The existing expansion joint between the driveway and garage is fully compressed.

Even when the joint appears wide enough at the surface, the concrete may still be in contact underneath. This means that when the street expands with heat, your driveway is being pushed into the rest of your home.

The foundation walls on either side of the garage door are being pushed inwards by the driveway slab.

This is a sign that when the concrete pavement expanded and lengthened, pushing into the concrete driveway, there was insufficient compression space within the expansion joints. The only place for the driveway slab to go was through your garage walls.

Gaps have formed behind the foundation walls on either side of the garage door as the garage slab is pushed rearward.

Installing new expansion joints in the driveway and installing wall anchors will restore your foundation walls to structural stability.

Basement walls or foundation walls are pushed out by the garage slab.

At this stage, the damage caused by street creep has lead to a potentially serious foundation issue. It’s important to address this soon — before the damage becomes any more significant.

Fortunately, there are easy, effective ways to prevent street creep damage. If you would like a free foundation repair quote for your problem, call or e-mail us today!

We Do Concrete Expansion Joint Replacement In PA & WV!

At Baker’s Waterproofing, we have warrantied solutions for preventing street creep damage to your foundation. To help you decide if our solutions are right for you, we offer free written repair quotes throughout our PA & WV service area.

We serve the Morgantown, Pittsburgh, Clarksburg, area, nearby areas such as Wheeling, Beaver, Bethel Park, Fairmont, Cranberry Township, Greensburg, Washington, and the surrounding regions. To schedule an appointment, contact us by phone or e-mail today!

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Baker's Service Area Map


Central PA

3819 N Susquehanna Trail
Shamokin Dam, PA  17876


922 North 3rd Street
Harrisburg, PA 17102


5 Industrial Road, Building A
Washington, PA 15301

York, PA

800 E King St, Suite 518
York, PA 17402