24/7 Emergency
Sewage & Contaminated Water Cleanup in San Mateo, CA
Sewage and black-water losses are contained, the materials the water touched are removed and disposed of, hard surfaces are disinfected, and the space is dried to a reading. The affected area is sealed off from the rest of the house. Porous materials the water reached come out and are bagged, with drywall cut to a margin above the visible line; hard surfaces are cleaned and disinfected. The space is then dried and read, and the containment comes down only when cleaning and drying are both finished.
No obligation: the assessment comes before any scope
Often needed alongside
- 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.
- 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.
- Mold Remediation
Growth and the material it grew into come out under containment, what remains is cleaned, and the assembly is dried and read before anything closes it in.
Frequently asked questions
Why does an added upper floor matter in a loss?
Because the two halves of the house are not the same building. The upper floor is newer framing, newer board and newer plumbing sitting on walls that were built for a roof rather than for another story. Water crossing that junction moves from one kind of construction into another, and the two dry at different rates.
Where does water from upstairs actually go?
Into the floor structure at the junction first. A failure in an added bathroom lands on the deck of the new floor, which is the ceiling of the original house, and runs along it until it finds a way down at a wall line. The room it shows up in is frequently not the one under the bathroom.
Is the original roof still in there?
Sometimes, and it is worth knowing before anything is opened. Some of these additions were built over the existing roof structure rather than removing it, which leaves a closed void between the two floors with old decking in it. That void holds water and cannot be reached without opening a ceiling.
These questions come from the San Mateo page.