
Attic insulation in Bellevue, WA
Settled, damaged or missing attic insulation costs you every month. We replace it so your Bellevue home holds its heat through the long wet season.
- Old and contaminated insulation removed
- Knauf EcoBatt®, blown-in and spray foam insulation
- Help with CNGC and utility rebates
Get your free insulation inspection
Tell us about comfort, old insulation or energy bills and we'll recommend the right fix.
Attic insulation for Bellevue homes
Much of Bellevue was built in the 1950s through the 1970s: ramblers and split-levels in Lake Hills, Crossroads and Newport Hills, many with their original attic insulation. In our long, cool heating season, an under-insulated attic keeps the furnace running for months longer than it needs to.
We work in homes across Bellevue, including Lake Hills, Crossroads, Somerset and Newport Hills: old insulation out, air leaks sealed, then Knauf EcoBatt®, blown-in or spray foam insulation installed.
Cascade Natural Gas customer? Check whether your project qualifies for a CNGC rebate

What we see in Bellevue homes
- The weather
Bellevue's wooded lots and shady, tree-lined streets mean roofs and crawl spaces dry out slowly after the rain.
- The wildlife
Mature trees, greenbelts and the Lake Washington and Lake Sammamish shorelines make Bellevue neighborhoods attractive to roof rats and mice.
- Under the floor
Bellevue's mid-century ramblers and split-levels mostly sit over crawl spaces, many with their original vapor barrier and duct runs.

Attic spray foam insulation replacement in mid-century rambler attic
Bellevue · from first look to finished job

- Before
This mid-century rambler attic shows worn fiberglass batt insulation with gaps and damage diminishing energy efficiency.
- In progress
During installation, the technician applies closed-cell spray foam to seal and insulate the attic roof deck and rim joists.
- After
With insulation replacement complete, the attic cavity is fully sealed and insulated with closed-cell spray foam.
Some images show actual Attic Crew jobs; others are representative, with details changed for customer privacy.
More attic insulation projects
Tap any project to step through it, from first look to finished job.
4 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.
“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.”
“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!”
“I was super impressed with the team that came a took care of what appeared to be a nightmare attic. The team lined our floors and walls from the entrance of the house to the attic trap door, removed all the old insulation and debris, then cleaned and sanitized the whole attic, covered any openings to prevent rodents in the future and closed off any ceiling openings with foam around each of our recessed lights.…”
Serving Bellevue from our Renton office
707 S Grady Way, Suite 600, Renton, WA 98057 · Directions
Neighborhoods we serve include Lake Hills, Crossroads, Somerset, Newport Hills, Woodridge, Factoria, Eastgate, Bridle Trails.
Attic insulation in Bellevue: FAQ
Do you serve all of Bellevue?
Yes. Our crews work throughout Bellevue and King County, including Lake Hills, Crossroads, Somerset, Newport Hills and Woodridge, from our Renton office.
How soon can you come out?
We respond quickly. Call 425-675-1721 or send the form and we'll schedule your free inspection at a time that works for you.
How do I know if my insulation needs replacing?
High energy bills, rooms that are hard to heat, insulation that's thin, compressed or below the top of the joists, and any sign of rodents or moisture in the insulation all point to replacement. We measure what you have during the free inspection.
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