Polyjacking is slabjacking performed with polyurethane foam, injecting lightweight expanding foam through small holes to raise a sunken slab, as opposed to the heavy cement-and-soil slurry used in mudjacking.
In depth
Polyjacking is a common industry name for the polyurethane method of concrete raising. It uses the same injection principle as any slabjacking repair, fill the void and lift the slab, but the foam is inert, water-resistant, and weighs a fraction of traditional slurry, so it will not wash out or overload the subgrade.
Compared with mudjacking, polyjacking uses smaller and fewer injection holes because the liquid foam travels easily between the slab and the soil, and the repair is traffic-ready in about 15 minutes rather than 1 to 2 days.
How Acme applies it. Acme has served the Greater Chicago area with polyjacking for over a decade, lifting and leveling sunken slabs, patios, driveways, and more.
Related terms: Slabjacking, Polyurethane Concrete Raising, Mudjacking, Concrete Leveling
Frequently asked questions
Is polyjacking better than mudjacking?
For most applications, yes: polyjacking is lighter, more erosion-resistant, uses smaller holes, cures far faster, and is typically competitive on price, which is why many highway and municipal projects no longer allow mudjacking.
Is polyjacking the same as Foamjection?
Effectively yes. Both describe raising concrete with injected polyurethane foam; Foamjection emphasizes the injection process and certification behind it.