Sidewalk Repair

Concrete Jack performs sidewalk repair by raising settled concrete back to its original position using slab jacking and foam jacking.  This corrects settlement problems to fix trip hazards, correct improper step heights, improve drainage and fill voids under unsupported concrete.

What causes the need for sidewalk repair?

Sidewalk repair using foam jacking.

Foam jacking sidewalk repair

Trip hazards are one of the most common reasons homeowners and property managers require sidewalk repair.  We fix tripping hazards where concrete on one side of a joint or crack is lower than on the other side of the joint or crack.  This is usually due to settlement.  One side of the concrete sinks.  It can also be due to uplift.  This is usually caused by tree roots.  There is no way to push a sidewalk down after it’s been raised by tree roots.

Improper step heights are frequently cited by home inspectors before a sale.  Code dictates that step heights be very close to each other in elevation.  If the sidewalk at the base of the steps sinks, the steps can get out of code.  Lifting settled sidewalks at the base of steps is a pretty straightforward repair.

The need for drainage improvement usually results from sidewalks settling so much that they slope towards the house instead of away.  This is common with sidewalks that run alongside homes with basements.  When water flows towards a house due to an incorrectly sloped sidewalk, it can cause moisture problems and foundation problems.  Lifting your sidewalk to establish good drainage is much less expensive than repairing your foundation or re-waterproofing your basement.  

Filling voids is a really common sidewalk repair.  If there are voids (air spaces) below your sidewalk, it’s pretty much guaranteed to start settling eventually.  Filling voids before a slab starts to settle is much quicker and easier than lifting a sidewalk after it’s broken and settled.  An ounce of sidewalk repair prevention is worth a pound of sidewalk repair cure.

Sidewalk Repair Methods:

We perform two different process, slab jacking and foam jacking, which for sidewalk repair.  Both process work to lift settled sidewalk concrete back to its original position.  Mud jacking works to raise settled sidewalk concrete by injecting sand-based grout under the concrete.  Foam jacking raises and supports settled concrete sidewalks by injecting high density polyurethane foam under the concrete.  Both processes are cost effective for repairing settlement of concrete sidewalks.

Sidewalk problems that we repair using mud jacking include voids (air spaces) under sidewalks and sidewalk settlement.  The most common cause of these problems is settlement of the underlying soil because it wasn’t packed down when the house was built or sidewalk was installed.  Generally, it takes about 10 years for the backfill material to settle on its own after it is installed.  Mud jacking and foam jacking tend to have slightly lower chances of resettlement than concrete replacement, which is the more common, and expensive, method for repairing sinking sidewalks.

Here’s some more information on the best way to fix a sidewalk.

Sidewalk Repair Cost:

Sidewalk repair using mudjacking.

Mudjacking a sidewalk.

Generally, sidewalk repair using slab jacking and foam jacking costs around 1/2 the price of replacement.  Mud jacking and foam jacking for sidewalk repairs generally take about 20 minutes per piece, but can take a bit longer if the sections have all settled differently.  You may walk on sidewalks that have been repaired using mud jacking or foam jacking during and immediately afterwards.

Please Note:

We do not replace concrete.

We do not make cracks go away.

We do not caulk or fill cracks.

We do not patch surface deterioration.

We can not lift asphalt (blacktop).

Sidewalk Repair Project Profiles: