Completed project · South San Francisco, CA 94080 · July 2026
The job record rates the rodent activity here as severe. In July 2026 Atticare USA stripped the old loose-fill from this 950 sq ft South San Francisco attic, vacuumed out the waste and nests, sanitized the deck, meshed the vents and sealed the gaps, then blew in a new R-38 layer.
Seeing the same signs in your South San Francisco attic? The inspection is free, and a ballpark quote by phone comes first.
The challenge
Severe rodent activity through old loose-fill
The attic floor was covered in old white-grey loose-fill, broken up and mixed with debris and chunks of older yellow material. The job record notes heavy rodent waste, droppings and nests through it.
With contamination at that level, the old layer could not stay. The order was fixed: remove everything, clean and sanitize the deck, close the openings, and only then blow in the new insulation.
The service
What the crew did, in order
Prep and protection
Protective barriers laid through the work path before any material was moved, so the rest of the house stayed clean.
Remove the old insulation
The existing insulation taken out with a heavy-duty vacuum across 950 sq ft, down to a clear, bare surface.
Clean and sanitize
Heavy rodent waste, droppings and nests vacuumed out, then OdoBan sanitation applied to neutralize odors, pheromones and bacteria.
Seal and rodent-proof
Entry points closed with wire mesh, polyurethane foam and cement, with two to four indicator traps left as a check. Gaps around fixtures, piping, wiring and vents air-sealed in the same pass.
New insulation
New R-38 blown-in insulation installed across 950 sq ft, on a clean, sealed surface rather than on top of the old layer.
The result
950 sq ft, from severe contamination to R-38 blown-in
Protective floor barriers were laid through the work path first. The old insulation came out with a heavy-duty vacuum, the heavy rodent waste, droppings and nests were vacuumed out, and OdoBan was applied to neutralize odors, pheromones and bacteria. The vent openings and gaps were closed with wire mesh, polyurethane foam and cement, seams along the framing were air-sealed, and two to four indicator traps were left as a check. New R-38 blown-in insulation went in last, across all 950 sq ft.
More from this job
Photos from the crew
Around the neighborhood
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One of 850+ completed projects across California — see all projects.
Questions homeowners ask
Attic work in South San Francisco, answered
Who cleans an attic with heavy rodent contamination in South San Francisco?
Atticare USA does, as a full project. On this South San Francisco job, rated severe, the old loose-fill came out with a heavy-duty vacuum, the droppings and nests were vacuumed out, OdoBan was applied, and the openings were sealed before any new insulation went in. The 5-step process explains the order.
Can new blown-in insulation go over old insulation that rodents have been in?
Not when the old layer is contaminated. The waste and odor stay in it, so on this job the whole layer came out first and the new R-38 blown-in went onto a cleaned, sanitized and sealed deck. See attic cleaning or insulation replacement.
Who seals attic vents and rodent entry points in South San Francisco?
Atticare USA closes vents and gaps with wire mesh, polyurethane foam and cement, as on the vent openings in this attic, and leaves two to four indicator traps as a check. If animals are still active, a licensed pest control provider handles that part first. The rodent proofing carries a 1-year warranty.
Does Atticare USA offer free attic inspections in South San Francisco?
Yes. Attic and crawl space inspections in South San Francisco are free, and Atticare USA can give a ballpark quote by phone first, so you know the range before anyone comes out. Call 1-888-743-7243.
Start the same way this job did.
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