An uneven pool deck can quickly become a safety concern. When concrete slabs around a pool settle or shift, they create trip hazards and uneven walking surfaces. Water can also collect in low areas, making the surface slippery and increasing the risk of accidents around the pool.
STL Polyjack provides pool deck leveling using advanced polyurethane foam injection. Our process lifts and stabilizes sinking concrete from underneath—no demolition or replacement—often saving customers up to 50%.
Most repairs can be completed in just a few hours, and the surface is typically ready to use the same day.
Pool decks sit on soil that can shift over time. Water around the pool area, changing soil conditions, and natural settling can cause the ground beneath the concrete to weaken or erode.
Common causes include:
When these issues occur, the slab loses support and begins to sink or tilt. Concrete leveling restores that support by filling the empty spaces beneath the deck and stabilizing the soil underneath.
Pool deck settlement often happens gradually, which means the problem may go unnoticed until the surface becomes uneven or unsafe.
You may need pool deck leveling if you notice:
If left unaddressed, these issues can continue to worsen and create safety concerns for anyone using the pool area.
Sometimes uneven pool decks are connected to other settling concrete around the property. If you are noticing similar issues in multiple areas, Saint Louis Polyjack also provides driveway leveling, garage floor leveling, walkway and sidewalk leveling, and patio leveling. In some cases, soil movement can also create empty space beneath the slab, which may require void filling to restore proper support.
Customers can also send photos of the problem area for a faster quote.
Trustindex verifies that the original source of the review is Google. As promised and diligent work.Posted on GDT STLTrustindex verifies that the original source of the review is Google. Last week STL Polyjack came out to repair my sidewalk and driveway. Did a fantastic job. Josh and Jesus were very friendly and knowledgeable about the product, explaining how it all works and if issues should arise how to proceed. I would highly recommend them for your projects. Thank you!Posted on Diane EclipseTrustindex verifies that the original source of the review is Google. I couldn't be happier with the work done by STL Polyjack! The crew arrived on time and answered all of my questions. They leveled my sinking concrete driveway with precision, and it now looks brand new — no more tripping hazards or uneven surfaces. Highly recommend them to anyone needing concrete leveling. Quality work, fair pricing, and fantastic customer service. Five stars all the way!Posted on Abbie FickeTrustindex verifies that the original source of the review is Google. My concrete leveling and join sealing project results are amazing. My slabs are now level. Excellent people to work with and quality workmanship.Posted on John HilliardTrustindex verifies that the original source of the review is Google. Josh from St Louis Polyjack did Ana amazing job lifting my driveway slabs. Not only did they complete the job quickly he entertained my 100s of questions about the process. If you have sinking concrete I’d highly recommend them.Posted on Brian RegulinskiTrustindex verifies that the original source of the review is Google. ABSOLUTELY THE BEST!! First your company was extremely responsive in setting up an appointment very quickly. Matt came out and bid the job. What a great young man!! We had the bid and then completion of project all done within 2 weeks. Our carport floor was sinking so both pads had to be corrected. Josh and Deandre were just the best. So professional and really nice guys!!!! They answered ALL of our questions- told us everything they were going to do and had us look to make sure we were happy. No surprises!! They were in and out of here after completely cleaning up within 2 hours. Very reasonably priced. I would highly recommend this company!!Posted on Sharon SchroederTrustindex verifies that the original source of the review is Google. Office staff and workers were great to deal with. Got all the leaks in my basement sealed. Super happy!Posted on Jacob NullTrustindex verifies that the original source of the review is Google. Had 2 slabs of 10x10 concrete on driveway and pathway from front door to mailbox. Was happy with results. Josh Burke and Zeus helped out. (Hope I have spelling correct). Done Tuesday Nov. 19th in Hazelwood.Posted on Stella CarlinTrustindex verifies that the original source of the review is Google. On time, great work/workers, looks good. Will definitely recommend to friends and neighbors.Posted on robert bateman
Serving St. Louis, Sunset Hills, Fenton, Kirkwood, Ballwin, Chesterfield, and surrounding communities.
Saint Louis Polyjack uses a polyurethane foam injection process to lift and stabilize pool deck slabs safely and efficiently. Instead of tearing out and replacing the concrete, our method restores support beneath the slab by filling hidden voids and strengthening the soil underneath.
Our process works in three simple steps:
1. Drill Small Access Holes
Small holes are drilled in specific areas of the slab to reach the empty space beneath the concrete.
2. Inject Expanding Polyurethane Foam
High-density foam is injected beneath the pool deck. The material expands to fill voids, stabilize the soil, and gently lift the slab back into position.
3. Patch the Holes and Finish the Repair
Once the deck is level, the drill holes are patched neatly. Most pool decks are ready to use shortly after the repair is completed.
Concrete lifting offers several advantages compared to replacing a pool deck.
Some of the main benefits include:
Instead of removing the pool deck, leveling restores the existing concrete while correcting the problem underneath.
When concrete starts to sink or settle, choosing the right contractor matters. STL Polyjack brings over a decade of experience and more than 1,200 completed lifts across the St. Louis area. We focus on fixing the root cause—not just the surface—using advanced polyurethane foam injection to lift and stabilize concrete without the cost and disruption of replacement. When you work with our team, you can expect:

Whether the project involves a residential driveway, uneven sidewalk, patio, commercial slab, or structural repair, our goal is to deliver a repair that restores safety, stability, and confidence in your concrete surfaces.
Clear answers about safety, repairs, and how concrete lifting restores uneven pool decks.
Yes. If the concrete is structurally sound, polyurethane lifting can raise and stabilize the pool deck without removing it. You can learn more about how this works on our concrete leveling process page.
Most pool deck leveling projects can be completed in just a few hours, making it much faster than replacing the entire deck.
Pool decks are typically ready to walk on shortly after the repair is completed because the polyurethane foam cures quickly and provides strong support beneath the slab.
Pool decks often sink due to water erosion, soil movement, or voids beneath the slab. In some cases, filling these empty spaces with void filling helps restore support.
Yes. The polyurethane material expands beneath the slab to lift and stabilize the concrete without disturbing the surrounding pool structure.
Yes. The same lifting process can repair driveways, walkways and sidewalks, patios, and garage floors if they are settling due to soil movement.
Yes. Saint Louis Polyjack backs polyurethane lifting repairs with a 5-year warranty, giving property owners confidence in the stability of the repair.
















STL Polyjack proudly serves homeowners, businesses, and property managers across the St. Charles and St. Louis area. With over a decade of experience, we provide polyurethane concrete leveling, lifting, and structural repair solutions that restore sinking concrete without the cost of replacement. From driveways and sidewalks to warehouse floors and parking lots, we keep properties safe, level, and stable.
Serving St. Louis & Surrounding Communities
If you have sinking or uneven concrete around your property, we can evaluate the issue and recommend the best solution.
We offer free estimates, and you can even send photos for a fast quote.
Saint Louis Polyjack specializes in polyurethane concrete leveling, lifting, and structural repair throughout St. Louis, MO and surrounding communities. We raise and stabilize sinking driveways, sidewalks, patios, pool decks, warehouse floors, and more using advanced poly foam technology.
Our process is fast, clean, and long-lasting — backed by a 5-year warranty.
Office Location : 12951 Gravois Rd. Ste. 100 St. Louis, MO 63127
Serving St. Charles, St. Louis, Sunset Hills, Fenton, Kirkwood, Webster Groves, Ballwin, Chesterfield, Crestwood & Arnold.
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