FAQ
Landmark Lifting
If you’re dealing with uneven, cracked, or sunken concrete, it’s natural to have questions about the process, durability, and what to expect. At Landmark Lifting, we believe in keeping things straightforward and transparent so you can feel confident in your decision. Below, you’ll find answers to the most common questions we receive about concrete lifting, from timing and preparation to long-term performance and when replacement may be necessary.
How long does concrete lifting take?
Most concrete lifting jobs can be done in 1-3 hours.
How long do we have to stay off of the lifted concrete?
You can walk or drive on your concrete as soon as the work is done.
How big are the holes when doing concrete lifting?
5/8 in (dime sized) we patch with quickcrete when we're done
Will the patches on my concrete be ugly?
It matches new concrete, will be slightly lighter on older concrete, but should blend over time. We sometimes have a hard time finding the holes we drilled in the event that we return to a job.
How long does the foam last that's used for concrete lifting?
The foam is a closed cell polyurethane, meaning that it is waterproof. The only thing that can break it down is UV rays. It will last as long as the concrete.
Is there a warranty on concrete lifting from Landmark Lifting?
We warranty our work for 2 years on homes more than 10 years old. Newer homes are not covered as settling is to be expected for the first 5-10 years. We can guarantee the quality of our product, but the behavior of the soil can not be predicted.
On homes newer than 10 years, if we need to return we can usually touch up the work for much less, and will charge for material used, not the minimum price.
Do you do foundation work?
We are not equipped to lift a sunken foundation. In some cases, if there is an exposed void, we can spray in to stabilize it. This is rare.
Do you seal cracks?
No. We recommend a product called sikaflex for diy crack sealing (usually around $15-20 per tube) Casey (from the crew) does it on the side and you can talk to him about it when he does the job. We also recommend work from The Driveway Company.
What kind of access/machinery is required?
The lifting process is noninvasive, and runs self sufficiently from our sprinter van. As long as we can drag our 300ft hose to the area, we can do it. No electrical or water access is required.
How do you know that the void is filled?
The amount of material injected is based on the depth of the void. We gauge the depth when we drill through the concrete, and fill as needed. In most cases the goal is not necessarily to fill the void completely, but to create pillars of support underneath the concrete.
What Causes Concrete to Sink or Become Uneven?
Concrete can become uneven due to soil erosion, poor drainage, improper compaction, or the natural weight of the slab. Over time, these factors cause the ground beneath the concrete to shift or settle.
How Can I Tell If My Concrete Needs Lifting?
Signs your concrete may need lifting include cracks, uneven surfaces, and trip hazards. You may also notice water pooling or areas that feel unstable when walked on.
How Do I Prepare My Property for Concrete Lifting?
Before your service, remove any furniture, vehicles, or obstacles from the area. Clear access allows our team to work efficiently and complete the job without delays.
What Are the Common Causes of Voids Under Concrete?
Voids typically form due to soil erosion, poor drainage, or settling soil. Other causes can include tree roots, nearby excavation, and repeated expansion and contraction from temperature changes.
How Can I Tell If There Are Voids Beneath My Concrete?
You may have voids if you notice cracks, sinking, or uneven sections. A hollow sound when tapping the concrete or areas that feel weak can also indicate empty space below.
How Can I Tell If My Concrete Needs to Be Replaced Instead of Lifted?
Concrete may need to be replaced if it is severely cracked, crumbling, or structurally compromised. Lifting is best for stable slabs that have settled, not for concrete that is breaking apart.
What Happens If Damaged Concrete Is Left Unrepaired?
Unrepaired concrete can become a safety hazard and continue to deteriorate. Water can seep into cracks, leading to further damage from erosion or temperature changes.
When Is Concrete Removal Necessary?
Removal is usually needed when concrete has extensive damage, large cracks, or significant unevenness. Issues like tree root intrusion or severe settling may also require full replacement.
How long have you been in business?
Established in 2015.
Get the Facts Before You Lift Your Concrete
If you’re noticing signs of sinking or uneven concrete, addressing the issue early can help prevent more extensive damage down the line. Concrete lifting is designed to be a quick, efficient solution that restores stability without the cost and disruption of full replacement. If you have questions about your specific situation, the Landmark Lifting team is always available to take a look and help you determine the best path forward.
Get a quote
Tell us what needs lifting and we will get back to you with a price.