Does expanding foam lift concrete?

• <div><p>Yes, expanding foam (also known as polyurethane foam) can lift concrete. This approach, called polyjacking, involves injecting the foam rather than concrete slurry to fill voids and raise the concrete slab back into place. It’s often faster and requires smaller drill holes than traditional mudjacking, though it may come at a higher cost. Some contractors also prefer <a href="https://www.angi.com/articles/mudjacking-vs-polyjacking.htm">polyjacking over mudjacking</a> for more damaged and delicate slabs.</p></div>

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Q: How long do you have to stay off concrete after mudjacking?

• <div><p>Mudjacking can take <b>24 to 72 hours</b> to cure enough to resume normal use. Because the slurry mixture contains cement, it needs to fully harden to ensure that added weight won&rsquo;t shift the concrete slab before it has completely set. Your <a href="https://www.angi.com/nearme/concrete-mudjacking/">concrete contractor</a> will be able to tell you when you&rsquo;re free to use your concrete surfaces again after mudjacking.</p></div>

Q: Is there an alternative to underpinning?

• <div><p>There is no real alternative to underpinning, although mudjacking and polyjacking are other repair methods that can add support from underneath your foundation. Rather than placing supportive piers under your structure, these involve pumping a material under your slab to lift a sunken section back into its original position. Polyjacking, in particular, is sometimes a suitable solution for stabilization issues under slab foundations, but underpinning is often accepted as the best and most permanent solution.</p></div>

Q: Can mudjacking be used for all types of concrete floors or surfaces?

• <div><p>Mudjacking is suitable for sidewalks, driveways, patios, and nearly all exterior flat structures. However, it may not suit severely damaged or heavily cracked areas.</p></div>

Q: How long does mudjacking last?

• <div><p><a href="https://www.angi.com/articles/how-long-mudjacking-lasts.htm">Mudjacking should last</a> for five to 10 years, so it&rsquo;s considered a temporary solution to sinking concrete. However, there are some cases where mudjacking fails before this time period, like if you have loose soil below the concrete or a karst landscape is to blame for the sinking concrete. Some mudjacking projects can last for well beyond a decade, depending on the underlying issue.</p></div>

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Last update on December 12, 2025

Reviewed in August 2025
The painter Kenny Frost was efficient and reliable. He and his crew were meticulous. We were extremely pleased.
Frost Painting
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Reviewed in June 2025
Noah exceeded my expectations at a competitive price . Clear communication, and fast! His estimate was spot on and it was clean and professional work. Noah did a 60amp sub panel install for my new garage, and also wired in four new outlets in my basement as I only had one down there. Thanks...
Parker Electric LLC
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Reviewed in March 2025
Brilliant place. Excellent service. Very satisfied with their treatment. Great price too.
LMC Home Remodeling, Inc.
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Reviewed in March 2025
The way to go. Future Homes is reliable and great at their craft. Dan and Ryan were a pleasure to conduct business with and were very knowledgeable. Their crew was top of the line, hard workers. They built my place from the ground up. Energy efficient is the way to go! Radiant heat added...
Future Homes USA, Inc.
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Reviewed in June 2023
I would recommend. They clean up when they finish.
Portanova Roofing North
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Reviewed in May 2023
They arrived in a timely manner and made sure everything was running smoothly before they left.
HVAC Solutions 207, LLC
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Reviewed in May 2023
Extremely Professional courteous and knowledgeable. Communicated the entire process of the detailed inspection. Would highly recommend!!
Main Choice Inspections, Inc.
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Reviewed in July 2022
I found Jay to be pleasant and easy to work with. He is very conscientious about his quality of work.
Barrett Pressure Washing
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Reviewed in May 2022
Extremely easy to work with. I made several design changes as we went along as ideas came to me. They were handled seamlessly and with no issues.
Leviathan Group LLC
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Reviewed in May 2015
Kev returned my phone call within a day and came out to the house on time as scheduled, he offered to to the work that week end but we were coordinating with some additional concrete work for a driveway apron so we scheduled his visit three weeks later. After three weeks passed I called to...
KEV'S TRUCKING & EXCAVATING
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