Attic Insulation Replacement, Rodent Proofing, Air Duct Work & Whole House Fan in San Jose, CA

Completed project · San Jose, CA 95131 · May 2026

The inspection found no rodent activity in this San Jose attic, and the scope was still a full rebuild: 1,124 sq ft taken back to a clean, foam-sealed deck, new air ducts, a fan installed for ventilation, and R-38 24in batts laid deep across the floor.

San Jose attic after the job, new insulation installed
After: the new insulation in place.

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

The challenge

No rodents, but a full rebuild on the list

No rodent activity was found here. The job was a full rebuild anyway: the old insulation had to come out so the deck could be cleaned, sealed and reinsulated from scratch, with the air ducts and attic ventilation handled in the same project.

Clearing the attic first is what made the rest possible. With the deck bare, the crew could foam-seal the gaps along the framing and around the recessed lights before any new insulation covered them.

The service

What the crew did, in order

Prep and protection

Floor protection and dust barriers set at the access point 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 1,124 sq ft, down to a clear, bare surface.

Clean and sanitize

Dust and debris vacuumed out, then OdoBan sanitation applied across the work area.

Seal and rodent-proof

Preventative rodent proofing: likely entry points closed with wire mesh, polyurethane foam and cement, though no rodent activity was found. Gaps around fixtures, piping, wiring and vents air-sealed in the same pass.

Improve ventilation

A fan installed to balance attic temperature and humidity.

Air duct replacement

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

New insulation

New R-38 24in Fiberglass Batts installed across 1,124 sq ft, on a clean, sealed surface rather than on top of the old layer.

The result

1,124 sq ft sealed, re-ducted, ventilated and reinsulated

Floor protection and dust barriers were set at the access point first. The old insulation came out with a heavy-duty vacuum, OdoBan was applied across the attic, gaps around fixtures, piping, wiring and vents were air-sealed, and the service area was rodent-proofed with wire mesh, polyurethane foam and cement as a precaution, with two to four indicator traps left as a check. Air ducts were removed and replaced to code, matching the existing diameters, a fan was installed to balance attic temperature and humidity, and new R-38 24in fiberglass batts went in last.

R-38
24in batts across 1,124 sq ft
Fan installed
to balance attic heat and humidity
New ducts
replaced to code, matching diameters

More from this job

Photos from the crew

Around the neighborhood

More Atticare USA projects in and near San Jose

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

Questions homeowners ask

Attic work in San Jose, answered

I need attic insulation, air sealing, and attic ventilation done together in San Jose. Which company handles all of it?

Atticare USA does all three in one project, as on this San Jose job: gaps along the framing and around recessed lights foam-sealed on the clean deck, a fan installed to balance attic temperature and humidity, and new R-38 24in batts laid last. More on choosing between the options: insulation, air sealing, or a whole-house fan.

I’m not sure if I need attic cleanup or just new insulation in San Jose. Which company can inspect and tell me what’s needed?

Atticare USA inspects for free and says which one the attic needs. On this job the inspection found no rodent activity, so the work was a replacement and upgrade rather than decontamination. See attic cleaning or insulation replacement.

I want to keep mice from getting into my attic again in San Jose. Which companies do rodent exclusion and entry-point sealing?

Atticare USA seals entry points with wire mesh, polyurethane foam and cement and leaves two to four indicator traps as a check. It was done here as a precaution even though no rodent activity was found. The rodent proofing carries a 1-year warranty.

Does Atticare USA offer free attic inspections in San Jose?

Yes. Attic and crawl space inspections in San Jose 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 Jose shows what is up there, and what it would take to put it right.


Ready to start your project?

Atticare

Please pay Below

Visa
Mastercard
Discover

San Francisco

Los Angeles

New Jersey