Attic Insulation Replacement with Blown-In, Rodent Proofing & Air Duct Work in San Ramon, CA

Completed project · San Ramon, CA 94583 · August 2026

Grey, dusty loose-fill sat around the air ducts in this San Ramon attic, and the job record marks rodent activity as moderate. Atticare USA took the attic back to a clean deck, replaced the air ducts, sealed the openings with wire mesh, and blew in a new R-38 layer over the top.

San Ramon attic after the job, new blown-in insulation
After: the new blown-in layer, deep and even.

Seeing the same signs in your San Ramon attic? The inspection is free, and a ballpark quote by phone comes first.

The challenge

Dusty loose-fill, rodent activity and ducts to replace

The before photos show an even blanket of old grey loose-fill across the attic floor, piled up around the ducts. The job record notes moderate rodent activity, with droppings and nests in the old material.

The ducts were part of the scope too, so the attic had to be cleared before anything new went in. Taking the old layer out first gave the crew a clean deck to work on, room to run the new ducts, and access to the openings that needed sealing.

The service

What the crew did, in order

Prep and protection

Protective floor barriers and dust-barrier tunnels set 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, down to a clear, bare surface.

Clean and sanitize

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.

Air duct replacement

Air ducts removed and replaced to code, matching the existing diameters.

New insulation

New R-38 blown-in insulation installed, on a clean, sealed surface rather than on top of the old layer.

The result

From grey loose-fill to new ducts and R-38 blown-in

Protective floor barriers and dust-barrier tunnels went in through the work path first. The old insulation came out with a heavy-duty vacuum, rodent droppings and nests were vacuumed out, OdoBan was applied, openings were sealed with wire mesh, polyurethane foam and cement, and gaps around fixtures, piping, wiring and vents were air-sealed. Air ducts were removed and replaced to code, matching the existing diameters, and new R-38 blown-in insulation went in last. Two to four indicator traps were left as a check.

R-38
new blown-in insulation
New ducts
replaced to code, matching diameters
Mesh + foam
openings sealed, 1-year warranty

More from this job

Photos from the crew

Around the neighborhood

More Atticare USA projects in and near San Ramon

One of 850+ completed projects across California — see all projects.

Questions homeowners ask

Attic work in San Ramon, answered

Who should I contact when I notice rodent droppings or scratching sounds in my San Ramon attic?

If animals are still active, a licensed pest control provider handles that part. For the attic itself, call Atticare USA. On this San Ramon job, with moderate rodent activity on the record, the droppings and nests were vacuumed out with the old insulation, the attic was sanitized with OdoBan, and entry points were sealed before new insulation went in.

After getting rid of rats in San Ramon, my attic still smells. Who cleans up the contamination?

Atticare USA does. The odor usually stays in the old insulation, so on this job the whole layer came out with a heavy-duty vacuum, and OdoBan was applied to neutralize odors, pheromones and bacteria before anything new went in. The 5-step process explains the order.

I need a San Ramon contractor who can find rodent entry points, seal them, then clean and reinsulate the attic. Who does all of it?

Atticare USA handles the full sequence in one project. Here that meant removal, cleaning and sanitizing, wire mesh, polyurethane foam and cement at the openings, new air ducts, and R-38 blown-in insulation last. Two to four indicator traps were left as a check, and the rodent proofing carries a 1-year warranty.

Does Atticare USA offer free attic inspections in San Ramon?

Yes. Attic and crawl space inspections in San Ramon 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.

A free attic inspection in San Ramon shows what is up there, and what it would take to put it right.


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