Concrete Raising Options: Foam, Mudjacking, or Replacement?
Polyurethane foam, mudjacking, or full replacement — what each method fixes, how long it lasts, and when each one is the honest call.
The goal: lift the slab, fill the void
Most sunken concrete doesn’t need to be replaced — it needs to be lifted back to grade and the empty space beneath it filled so it’s supported again. There are two proven ways to do that, plus replacement for the slabs that are genuinely too far gone.
Polyurethane foam injection
We drill dime-sized holes, inject an expanding structural foam, and it fills the voids and raises the slab back to level within minutes. Foam is lightweight, so it won’t overload already-weak soil; it’s waterproof, so it won’t wash out; and it cures fast, so you can usually use the surface the same day. The small holes patch nearly invisibly.
Mudjacking (slurry)
The traditional method pumps a cement-and-soil slurry under the slab to raise it. It works, and it’s often lower-cost up front — but it uses larger holes, adds real weight to soil that’s already moving, and takes longer to cure. On heavy commercial slabs, or where budget is the deciding factor, it can still be the right tool.
When replacement is the honest answer
If a slab is crumbled, spalled through, or broken into many pieces, lifting it just raises a broken slab. In those cases we’ll tell you straight that replacement is the better value — we won’t raise something that isn’t going to hold.
How we choose
We match the method to the slab, the soil, and how you use the space, then put it in a written quote so there are no surprises. For most driveways, walkways, patios, and pool decks around Houston, foam gives the cleanest, longest-lasting result.
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