Polyurethane Foam Jacking for Settled Concrete
When a concrete slab settles, polyurethane foam jacking lifts it back toward level in a fraction of the time of traditional methods. A two-part expanding polymer is injected beneath the slab through small holes, filling voids and raising the concrete as it cures. Foundation Solutions uses polyurethane foam jacking as part of a full foundation repair plan, and it’s the same core method behind our concrete lifting and house leveling services.
What Is Polyurethane Foam Jacking?
Polyurethane foam jacking uses a high-density, two-part expanding polymer injected beneath a settled slab or structure through small, dime-sized holes. Within minutes, the foam expands to fill voids in the soil and lifts the concrete or structure above back toward its original position.
Unlike traditional mudjacking, which uses a heavy cement slurry, polyurethane foam is lightweight, waterproof, and cures in about 15 minutes — meaning the area can typically be back in use the same day, with no risk of adding extra weight that could cause the same settlement to happen again.
Where Polyurethane Foam Jacking Is Used
Because it’s fast, lightweight, and precise, foam jacking is used across a wide range of applications:
- Sunken driveways, patios, and sidewalks — see our concrete lifting page
- Settled house foundations and slabs — see our house leveling page
- Pool decks and garage floors
- Warehouse and commercial slabs
- Voids beneath slabs caused by soil erosion
Why Foam Instead of Traditional Mudjacking
Foam weighs a fraction of cement slurry, so it doesn’t add the extra load that can cause soil to compress again. It also cures in minutes rather than days, and the injection holes are small enough that most people never notice them once patched.
How Polyurethane Foam Jacking Works
1. Site Assessment
A project manager evaluates the settled area and confirms polyurethane foam jacking is the right method for the slab or structure involved.
2. Injection Point Layout
Small holes, typically the size of a dime, are drilled at calculated points across the settled area.
3. Foam Injection
The two-part polymer is injected beneath the slab, expanding within minutes to fill voids and lift the concrete evenly.
4. Cure & Level Check
The foam cures within about 15 minutes, and our team verifies the surface has returned to level before finishing the injection points.
Polyurethane Foam Jacking vs. Traditional Mudjacking
Both methods lift settled concrete, but foam is the faster, lighter option in most residential cases. Mudjacking uses a heavy cement slurry that can take days to cure and adds significant weight to already-unstable soil. Polyurethane foam weighs a fraction as much, cures in minutes, and is precise enough for tight spaces. See how this plays out on real slabs on our concrete lifting page, or for a full structure rather than a slab, see house leveling.
Backed by a Warranty You Can Count On
Every polyurethane foam jacking job we complete is backed by warranty-supported protection. If the underlying cause of settlement has been addressed and you still notice movement, our team will inspect the area and make it right.
FAQs
About Polyurethane Foam Jacking
How Long Does Polyurethane Foam Jacking Take?
Most residential jobs are completed in a few hours, since the foam expands and cures in about 15 minutes per injection point. There is no multi-day curing wait like traditional mudjacking or a full slab replacement.
Is Polyurethane Foam Strong Enough for Heavy Loads?
Yes. High-density polyurethane foam is engineered to carry significant structural and traffic loads, and is used under everything from residential patios to commercial warehouse floors.
Will the Injection Holes Be Visible Afterward?
The holes are typically the size of a dime and are patched after injection. Once patched, they are barely noticeable, especially compared to the disruption of a full slab replacement.
Ready to Talk Through Your Options?
Settled concrete doesn’t have to mean a full replacement. Reach out and our local team will inspect the affected area, explain what’s happening beneath it, and recommend whether polyurethane foam jacking is the right fix.
Testimonials
I don't even know where to start with this review. From the first contact to the end of the job, Ryan and his crew were amazing - professional, knowledgeable, courteous, tidy and clean and very respectful of the impact the job had on me as the homeowner. The job was major, but I felt confident with the information that Ryan and his crew shared with me each step of the project. Since they are specialists, they are very busy so it took a while from start to finish but worth the wait! I could not be more pleased. They get an A+++ from me.
We had a consultation with a very knowledgeable engineer (Collin) who's extremely patient to answer questions and concerns we had. After a thorough walkthrough and measurements, it turned out the area which we thought might be problematic with leveling is only centralized and minuscule, not foundation-related. I'd like to thank Foundation Solutions for this engineer's detailed explanations, professional knowledge and recommendations. At the end, we acquired peace of mind and would highly recommend this company to anyone that may be seeking help with foundation related issues. If we are doing any addition/expansion of our house, we would definitely get in touch again for securing our foundation.
Kyle and the team are awesome! A corner of our foundation has a horizontal crack and when we go out for a quote, many companies explained how serious it is and give us a high estimation. Kyle came onsite and did a detailed inspection, explain why it crack, and how to properly fix it. Then few days later, gave us a reasonable estimate, and we decided to go with the service, they handled the permit, came to fix it in a day and did all the final inspection and passed, we have a smooth experience on the fix. My family are super happy with their service and already recommend to friends in case they need some work in the foundation.