Polyurethane foam is great for leveling concrete. As the foam is injected under the concrete, it moves and expands. As the foam expands it fills any holes, cracks, and crevices beneath the concrete slab. Once voids are filled, the foam begins to lift the sunken concrete.

love a little illusion! 😵‍💫😵‍💫

Won't it breakdown over time? Every type of foam I've seen becomes dry rotted and crumbles after a while.

I am no contractor but this seems like the most mickey mouse way of fixing something.

Ha! It's like concrete getting a foam hug from below! Imagine if concrete could talk, it would probably be like, "Whoa, I'm floating!" Funny stuff!!!

Polyurethane foam injection effectively stabilizes bridge abutments, extending their lifespan and reducing repair costs significantly.

And is the foam environmentally friendly?

Yeah I'm sure there will be no risk of chemicals leaching into the soil and water supply at all from this.

I owned an insulation company. While the foam will hold up around windows and doorframes (because there’s no force applied to it), I would be highly suspect of the long term sustainability under 100s of pounds of concrete. After a few seasons, I would expect it to break down.

I've used this at home, and it works. Nuff said

Longcrete videos.