A-1 Concrete Leveling, located in Pittsburgh, PA, is a construction company whose primary application is raising sunken concrete slabs through a hydraulic pressure injection process using patented equipment. We drill a series of 1" diameter holes through the sunken concrete slab, then hydraulically inject a slurry, or grout, to fill the voided areas below the slab. This raises the slab back to its' original position, saves money and the environment and eliminates the need for replacement
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