
Attic insulation that works in Berkeley
A properly insulated attic keeps your Berkeley home comfortable in every season and takes load off the furnace and AC.
- Old and contaminated insulation removed
- Knauf EcoBatt® and blown-in insulation
- Lower heating and cooling bills
Get your free insulation inspection
Tell us about comfort, old insulation or energy bills and we'll recommend the right fix.
Why Berkeley homes need better insulation
Fog pours in through the Golden Gate on summer evenings and the hills stay cool and damp through winter, so thin, old insulation shows up in Berkeley heating bills. An attic with too little insulation makes the heating and cooling run longer every day of the year.
We insulate homes in Elmwood, Claremont, North Berkeley and Thousand Oaks and throughout Berkeley: old material out, air leaks sealed, then new EcoBatt® or blown-in insulation to the right depth.

What we see in Berkeley homes
- The houses
Berkeley has some of the oldest housing in the East Bay: Craftsman and brown-shingle homes from the early 1900s across Elmwood, North Berkeley and Claremont, many still with their original attics.
- The wildlife
Creeks, Tilden Park and the wooded hills bring roof rats and mice into Berkeley homes, especially older houses with open vents.
- Under the floor
Berkeley's older homes sit on raised foundations, often over crawl spaces with dirt floors, old debris and no vapor barrier.

Underfloor insulation replacement
Oakland · from first look to finished job

- Before
Sagging, worn insulation under a raised floor.
- In progress
Pulling down the old insulation.
- After
Fitting new insulation between the floor joists.
Some images show actual Attic Crew jobs; others are representative, with details changed for customer privacy.
Recent projects nearby
Tap a project to step through it, from first look to finished job.
5 photos
4 photosSome images show actual Attic Crew jobs; others are representative, with details changed for customer privacy.
What our customers say
Rated 4.9 on Google, with 5-star reviews on Yelp, so you can breathe easy knowing you're in good hands.
“We went 5+ years without dealing with the insulation in our attic which was basically non-existent and years of old rat feces prior to us moving in. From the start Ron gave us a very competitive estimate. Joy and Sean arrived promptly, went through the job requirements and then through the house recognizing all the vents/ducts that they were going to clean. At the end of the job, they made sure we were completely…”
“This company has done a unrivaled job. They stand behind their reputation and are true to their word. They did insulation clean up, installing new insulation, sanitized and rodent proof. It's only been a few days but you can already tell the different in the temperature of our house!”
“Joey and his crew arrived on time. They were very professional and considerate to our needs. We needed our old insulation swapped out and have our attic and crawl space rodent proofed. They did an amazing job at doing so. He was considerate enough to take pictures of all work completed and presented me everything.”
Berkeley is served from our Mid Peninsula office
2225 East Bayshore Road, Suite 295, Palo Alto, CA 94303 · Directions
We work in every part of Berkeley, including Elmwood, Claremont, North Berkeley, Thousand Oaks, Westbrae, South Berkeley, the Berkeley Hills.
Attic insulation in Berkeley: questions
Which parts of Berkeley do you cover?
All of it, and the rest of Alameda County: Elmwood, Claremont, North Berkeley, Thousand Oaks, Westbrae and South Berkeley and everywhere in between. Berkeley is served from our Palo Alto office.
How much insulation does my attic need?
It depends on the house and what's there now. We measure the existing depth and condition during the free inspection and recommend the right R-value and material for your home.
Is the inspection really free?
Yes. We inspect, photograph what we find and give you a firm written quote, with no obligation. Call 800-558-5857 or use the form to book.
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Free attic insulation inspection in Berkeley
Firm, written quotes, so there are no surprises.
