Attic Insulation Replacement, Rodent Proofing & Air Duct Work in Los Angeles, CA

Completed project · Los Angeles, CA 91403 · December 2025

This Sherman Oaks attic, in ZIP 91403, had old kraft-faced batts torn and buried under debris, with wiring and pipes running through them. Atticare USA removed everything down to the ceiling boards, sanitized the space, sealed around penetrations, replaced the air ducts to code at their existing diameters and finished with new R-38 16in batts.

Los Angeles attic after the job, new insulation installed
After: the new insulation in place.

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

The challenge

Torn old batts under a layer of debris

Before-work photos show the old faced batts ripped open and covered in grit and debris, with conduit, copper pipe and a junction box lying across them.

Laying new insulation over that would have trapped the debris, and the gaps around every pipe and box, underneath it. The job had to start from bare ceiling boards.

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, down to a clear, bare surface.

Clean and sanitize

Debris vacuumed from hard surfaces, then OdoBan sanitation applied to neutralize odors and bacteria.

Air sealing

Gaps around fixtures, piping, wiring and vents air-sealed.

Air duct replacement

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

New insulation

New R-38 16in Fiberglass Batts installed, on a clean, sealed surface rather than on top of the old layer.

The result

Back to the boards, sealed, and reinsulated

Protective barriers went down through the work path first. All existing insulation came out with a heavy-duty vacuum, the attic was cleaned and sanitized with OdoBan, and the service area was rodent-proofed with wire mesh, polyurethane foam and cement, with 2-4 indicator traps left as a check. Gaps around fixtures, piping, wiring and vents were foamed shut, air ducts were removed and replaced to code, matching the existing diameters, and new R-38 16in fiberglass batts went in last.

R-38
16in fiberglass batts
Air-sealed
boxes, pipes and penetrations
Air ducts
replaced to code, same diameters

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 Los Angeles, answered

Who cleans and sanitizes an attic after a rat problem in Los Angeles?

Atticare USA does, as part of one project: old insulation out with a heavy-duty vacuum, the attic cleaned, then OdoBan applied to neutralize odors, pheromones and bacteria. This Sherman Oaks job followed that sequence before any sealing or new insulation. See why the order of operations matters.

Rats keep getting back into my attic in Los Angeles. Which companies seal up the entry points they use?

Atticare USA seals entry points with wire mesh, polyurethane foam and cement, and leaves two to four indicator traps as a check. Where live animals are present, a licensed pest control provider handles that part. On this job the gaps around junction boxes, pipes and conduit were foamed on the cleared attic. Rodent proofing carries a 1-year warranty: how to compare rodent-proofing warranties.

Which Los Angeles attic companies handle full removal, cleanup and re-insulation in one job?

Atticare USA does all of it with one crew. Here the old batts came out, the attic was cleaned, sanitized and sealed, the air ducts were replaced to code, and new R-38 16in batts were installed last. More on costs after rodents: attic insulation replacement in Los Angeles.

Does Atticare USA offer free attic inspections in Los Angeles?

Yes. Inspections in Los Angeles and across the Los Angeles area are free, and Atticare USA can give a ballpark quote by phone first. Call 1-888-743-7243.

Start the same way this job did.

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


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