Bellevue's Eastside neighborhoods span a wide range of home ages — from mid-century ranches in Lake Hills to 1970s colonials in Newport Hills. Many of these homes were built before wall insulation was standard practice. RetroFoam is the answer: injection foam that fills every inch of the wall cavity through small access holes, with no drywall removal and no disruption to your home.
Bellevue Neighborhoods We Serve
Downtown Bellevue
Crossroads
Newport Hills
Somerset
Factoria
Lake Hills
Bridle Trails
Medina
Clyde Hill
Wilburton
Eastgate
Surrey Downs
The Case for Insulating Your Bellevue Home
Older Eastside homes lose heat through their walls every winter. Here's what changes when you fill them.
Consistent Temperatures Room to Room
Cold exterior walls create temperature stratification inside. After RetroFoam installation, homeowners consistently report that rooms feel more even — no more cold spots near exterior walls or windows that feel drafty despite being sealed.
Non-Toxic, Safe for Families
RetroFoam is non-toxic, produces no odors, and generates no offgassing after installation. It's safe for children, pets, and people with chemical sensitivities. Once cured, it's completely inert.
No Mess, No Demo
We drill small access holes through your exterior siding between each stud bay. Holes are filled and patched after injection. There's nothing to clean up inside, no drywall to repair, and no painting required.
How It Works
Three steps. Done in a day.
1
Free quote. We assess your home's siding, wall structure, and any existing insulation. You get a detailed estimate with rebate amounts before scheduling.
2
Installation day. Small holes are drilled into your siding between each stud. RetroFoam is injected until the cavity fills, then holes are patched and color-matched to your siding.
3
Lifetime warranty. RetroFoam won't settle, sag, or degrade. Your insulation is backed by a permanent material warranty.
$2.50/sq ft
PSE Rebate for Bellevue Homeowners
Puget Sound Energy customers qualify for $2.50 per square foot on wall insulation upgrades. We handle all rebate paperwork as an approved PSE contractor. Learn more →
