Soil stabilization in San Diego. Fix the cause, not just the symptom.

We see expansive clays inland (especially east county and parts of inland north county), decomposed granite over bedrock in the foothills, alluvial fill in valleys and creek beds, and uncompacted urban fill on lots that were graded for development. Coastal terraces are usually stable. Hillside lots are the highest-risk class because of slope creep and drainage.

Polyurethane will lift slabs and pavement effectively up to about 1.5 inches. It is not the right tool for lifting a structural footing carrying full house load; for that we use helical or push piers. Polyurethane shines at filling voids and lifting interior slab sections.

Yes, the cured resin is inert and structurally rated. The materials we use (HMI, Prime Resins, AP Lift) are NSF 61 listed for contact with potable water systems where required. We do not use sodium silicate or solvent-bearing products near interior occupied spaces.

For permit work and for any structural underpinning above 6 piers, yes. For void fill and slab jacking, usually not. We tell you up front when a soils report is going to be required by the building department.