Completed project · San Marino, CA 91108 · August 2026
A San Marino homeowner called Atticare USA after spotting rodent activity in the attic. The crew found moderate rodent activity and two aging air ducts, then sealed, sanitized and re-insulated the space and swapped the ducts to current code.
— Natasha H., San Marino homeowner
The challenge
Rodent activity and aging ducts in a 2,025 sq ft attic
The inspection found moderate rodent activity — droppings, nests and debris across the attic floor — plus two aging flexible air ducts and open gaps around fixtures, piping and vents that rodents were using to get in. The existing insulation was still usable, so the plan was to clean, seal and build on top of it rather than strip the attic bare.
The service
What the crew did, in order
Prep and containment
Floors and work paths protected before any attic work began, keeping the rest of the home clean throughout.
Cleanup and sanitizing
Rodent droppings, nests and debris vacuumed from hard surfaces, then treated with OdoBan sanitation to clear odors, pheromones and bacteria.
Rodent proofing
Entry points around the attic sealed with wire mesh, polyurethane foam and cement, with indicator traps set to confirm the space stays clear.
Air sealing
Gaps and cracks around fixtures, piping, wiring and vents sealed to stop drafts and close off smaller entry points.
New insulation and duct work
R-38 16in fiberglass batts added over the existing insulation to bring the attic to current California code, and two flexible R6 air ducts replaced.
The result
A sealed, code-level attic with new ducts
The attic went from an active rodent problem to a documented, code-compliant space — sealed against re-entry, freshly insulated, and running on two new air ducts.
More from this job
A few more shots from the crew
Around the neighborhood
More Atticare USA projects near San Marino
Attic Clean Up and Insulation Replacement
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One of 850+ completed projects across California — see all projects.
Questions homeowners ask
Attic work in San Marino, answered
How long does an insulation and rodent proofing job like this take in San Marino?
Most single-family attics take one to two days depending on scope. This San Marino project — cleanup, rodent proofing, air sealing, new insulation and two replaced air ducts — is on the shorter end of that range.
Does Atticare USA offer free attic inspections in San Marino, CA?
Yes. Atticare USA offers free attic and crawl space inspections across San Marino and the San Gabriel Valley, and can give a ballpark quote over the phone before any visit.
What does rodent proofing include?
Rodent proofing is exclusion work: sealing the holes and gaps rodents use to enter the attic and crawl space so they cannot come back. Live removal, when needed, is handled by a licensed pest control provider.
Your attic gets the same record.
Free inspection across the San Gabriel Valley and greater Los Angeles — and a ballpark quote over the phone before anyone comes out.
