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

Completed project · Los Angeles, CA 91306 · April 2026

At 866 sq ft this was a compact Los Angeles attic, but the duct runs crossing it carried old insulation that was torn and dirty. Atticare USA took the attic back to the deck, foamed the gaps along the framing, replaced the air ducts to code at the existing diameters, and laid new R-38 16in fiberglass 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, dirty insulation around the old duct runs

The inspection photos show the duct runs through the attic wrapped in old yellow insulation, with the outer wrap torn open in places and old material and debris lying over it.

With the ducts in the scope as well, the job started by clearing the attic. That left a clean deck to sanitize, open gaps along the top of the walls to seal, and room to replace the ducts before the new insulation went down.

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 866 sq ft, down to a clear, bare surface.

Clean and sanitize

Debris vacuumed from hard surfaces, then OdoBan sanitation applied to neutralize odors 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 16in Fiberglass Batts installed across 866 sq ft, on a clean, sealed surface rather than on top of the old layer.

The result

866 sq ft, rebuilt around new ducts

Protective floor barriers went down through the work path first. The old insulation came out with a heavy-duty vacuum, OdoBan was applied to neutralize odors, pheromones and bacteria, the service area was rodent-proofed 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 16in fiberglass batts went in last. Two to four indicator traps were left as a check.

866 sq ft
cleared and reinsulated
R-38
16in fiberglass batts
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 Los Angeles

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

Questions homeowners ask

Attic work in Los Angeles, answered

Who should I call if I hear scratching or movement in my attic in Los Angeles?

If animals are still active, start with a licensed pest control provider. Then call Atticare USA for the attic itself: removing the old insulation, sanitizing, sealing entry points with wire mesh, polyurethane foam and cement, and reinsulating, as on this job. Inspections are free. Why the order of operations matters.

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

Atticare USA. On this Los Angeles job the old insulation came out with a heavy-duty vacuum and OdoBan was applied across the attic to neutralize odors, pheromones and bacteria, before any sealing or new insulation.

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

Atticare USA runs the whole sequence as one project: remove, clean, sanitize, seal and rodent-proof, then insulate. Here that also included replacing the air ducts to code before the new R-38 16in batts went in. Rodent proofing carries a 1-year warranty; see how to compare rodent-proofing warranties.

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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