Completed project · Livermore, CA 94550 · August 2026
It started with a free inspection. 8 duct runs in this Livermore home had reached the end of their service life. Also in scope: an exterior inspection with photos.
Seeing the same signs in your attic and crawl space? The inspection is free.
The challenge
An air duct system past its service life
No rodent activity in this Livermore attic. The problem was the duct system itself — old runs losing conditioned air between the unit and the rooms it was supposed to be serving.
A crawl space carries the same problem as an attic and gets looked at half as often — it was brought into the same scope of work.
The service
What the crew did, in order
Clean and sanitize
Rodent waste, droppings and nesting material vacuumed out, then the surfaces treated with OdoBan sanitation to clear odor, bacteria and the scent trails that draw rodents back.
Seal and rodent-proof
Entry points sealed with wire mesh, polyurethane foam and cement, with two to four indicator traps set to confirm the space stays clear.
Air ducts
8 duct runs replaced with new flexible R6 ducts, installed to code at matching diameters.
The result
8 new duct runs back to code
The air distribution was replaced end to end at matching diameters, so conditioned air reaches the rooms it is meant to reach instead of leaking into the attic on the way.
More from this job
A few more shots from the crew
Around the neighborhood
More Atticare USA projects near Livermore
Attic Cleaning and Attic Insulation Replacement in Livermore, CA
Attic Cleaning Services and Attic Insulation Replacement in Livermore, CA
One of 850+ completed projects across California — see all projects.
Questions homeowners ask
Attic and crawl space work in Livermore, answered
What does rodent proofing include in Livermore?
Rodent proofing is exclusion work: sealing the gaps and openings rodents use to get in, with wire mesh, polyurethane foam and cement, then setting two to four indicator traps to confirm the space stays clear. Live removal, where it is needed, is handled by a licensed pest control provider. Atticare USA has written up how Atticare USA seals entry points and the 5-step restoration process that follows. Worth reading before you compare quotes: how to compare rodent-proofing warranties.
Why does the crawl space matter as much as the attic?
A crawl space sits under the living space and shares its air, so contamination and open entry points down there reach the rooms above just as attic problems do — and it gets inspected far less often. The sequence matters as much as the work: why the order matters in a crawl space.
How do I know when air ducts need replacing rather than cleaning?
Flexible ducting has a service life. Once the inner liner has torn or the insulation around a run has broken down, cleaning does not restore it — conditioned air keeps escaping into the attic. At that point replacing the run is the fix. More: air duct questions answered.
Start the same way this job did.
A free attic and crawl space inspection in Livermore tells you what is actually up there — what it would take to put right, and what it would not.
