Seattle's older neighborhoods — from Ballard bungalows to Capitol Hill Craftsmans — are full of charm but short on insulation. The wet Pacific Northwest winters make uninsulated walls feel brutal. RetroFoam injection foam is purpose-built for exactly these homes: existing walls, no demolition, complete cavity fill in a single visit.
Seattle Neighborhoods We Serve
Capitol Hill
Ballard
Fremont
Queen Anne
Wallingford
Greenwood
Ravenna
Montlake
Madison Park
Columbia City
Beacon Hill
West Seattle
Northgate
Lake City
Maple Leaf
Phinney Ridge
Laurelhurst
Seward Park
Why Seattle Homes Need Wall Insulation
Seattle's housing stock skews old. Tens of thousands of homes were built with little or no wall insulation — and the results are familiar.
Cold Walls, Even With the Heat On
Empty wall cavities conduct cold straight into your living space. No amount of thermostat adjusting fixes an uninsulated wall — you have to fill it. RetroFoam expands to fill the entire cavity and stays put permanently.
Street Noise & Neighbor Noise
Seattle's dense neighborhoods mean traffic, buses, and neighbor sounds pour through uninsulated walls. RetroFoam's foam matrix significantly reduces airborne sound transmission — walls feel quieter almost immediately after install.
No Disruption to Your Home
We drill small holes through your existing siding — about the size of a quarter — inject the foam, and patch the holes. No scaffolding, no interior demo, no living out of hotel. Most Seattle jobs are done in one day.
How It Works
Three steps. One day. Zero drywall damage.
1
Free quote & wall assessment. We inspect your siding type, wall construction, and existing insulation levels. You get a firm price before any work begins.
2
Injection day. Our crew drills small access holes between studs, injects RetroFoam until the cavity is full, then patches and blends the holes to match your siding.
3
Done — and warranted for life. RetroFoam is inert once cured. It won't settle, sag, or absorb moisture. Your installation is backed by a lifetime material warranty.
$2.50/sq ft
PSE Rebate Available for Seattle Homeowners
Puget Sound Energy customers can earn $2.50 per square foot on qualifying wall insulation upgrades. For a typical Seattle home, that's $2,500–$3,500 back. We handle the rebate paperwork as an approved PSE contractor. Learn more →
