Serving San Francisco
Groundwater & Basement Water Intrusion in San Francisco, CA
Basement seepage, failed sumps and water through the slab are extracted and dried, and the path from the ground is found so the floor stays dry next season. The path from the ground is named first: through the wall, up through the slab, back through a drain, or from a sump that stopped. The space is extracted and dried, with the porous materials the water touched removed, and the delivery is addressed, because a dried floor only stays dry if the water stops arriving.
Local contractors · findings documented for your claim
Often needed alongside
- Structural Drying & Dehumidification
Sealed air movers and dehumidifiers bring framing, subfloor and drywall back to a measured dry standard, with daily readings logged from inside the material.
- Emergency Water Extraction
Standing water is pumped and extracted around the clock, before it climbs the walls and soaks the subfloor. Same-day response where coverage allows.
- Mold Inspection & Testing
An independent assessor confirms whether the assembly that got wet is actually dry, whether growth started while it was not, and how far it reaches.
Frequently asked questions
What does a seismic retrofit involve down there?
Bolting the sill to the foundation and sheathing the short cripple walls above it, which means opening up the lowest part of the structure, drilling the foundation, and closing it back up. It is done for shaking, not for water.
Why does retrofit work matter to a wet wall?
Because the work is exactly where water arrives. The sill, the cripple wall and the base of the framing are what a retrofit touches and what a wet garage or a leaking foundation reaches, so the two overlap completely. That overlap is the reason a retrofit inspection and a damp survey tend to find the same things.
Does the quality of the retrofit vary?
Enormously, and it is worth establishing which kind you have. Some were engineered and inspected; others were done quickly with whatever hardware was to hand. Opening one small area tells you which, and it changes what can be relied on.
This FAQ belongs to the San Francisco page; it is repeated here.