For starters, it’s expensive and the repair will take at least several days because the fresh concrete must harden and cure before the slab can be used again. But even more importantly, if weak soil caused the slab to sink, the soil may compress again under the weight of the new slab.
What if you could raise a cracked slab back to its proper level in less than an hour, with no “down” time waiting for new concrete or mortar to cure? This fast, affordable repair is possible with a new slab-raising technique.
Our Spray Tech process involves drilling one or more small holes in the sunken area of the slab, then injecting an expanding “geotechnical” foam beneath the slab.