Can I Fix Sinking Concrete Slabs?

Once a concrete slab has started to sink, it is time to call in a professional. DIY concrete lifting rarely gives the desired result, and it can often cause more damage in the long run. Two options include mudjacking or polyurethane foam injection. 

Mudjacking 

Mudjacking is somewhat of a heritage solution to sinking concrete slabs around a home. It involves pumping cement slurry underneath the damaged concrete slab. The pressure created by this process hold the slab in place once set. This provides a strong and stable surface but has a few drawbacks. 

This is a slightly less efficient process. First and foremost, the process is quite messy, making it unsuitable for interior use. Secondly, the cement slurry is very heavy and takes a long time to fully set. As such, this process is unsuitable for weaker soil and inconvenient for surfaces that see regular use. 

PolyRenewal™ Polyurethane Foam 

PolyRenewal™ polyurethane foam is a far more up-to-date method of concrete lifting that uses less material and sets far more quickly. This process sees a professional creating a tailored blend from the two-part foam to give just the right amount of expansion and force. The foam is then injected into the space beneath the sunken concrete slab. 

This foam expands quickly and sets to 90% rigidity in under an hour. It is also very lightweight and moisture resistant. As such, PolyRenewal™ is a far more efficient and long-lasting solution that does not overburden already weak soil. This more than outweighs the extra cost, in our opinion, because it minimizes the risk of recurrence.