RetroFoam injection insulation is a game-changer in retrofit insulation for existing homes.
Fergus Falls homes and cabins face some of Minnesota’s coldest winters and windiest conditions. Drafts, uneven room temperatures, and high heating bills are common in older houses and lake properties in Otter Tail County. RetroGreen Energy installs RetroFoam injection wall insulation in existing walls without the mess of a remodel. The result is warmer winters, cooler summers, and quieter rooms.
Why Wall Insulation Matters in Fergus Falls
When walls are hollow or poorly insulated, heated air escapes quickly in winter while summer heat sneaks inside. That forces furnaces and air conditioners to work overtime, driving up energy bills. In Fergus Falls, where homes often face strong winds and freezing temperatures, insulation is critical. RetroFoam fills wall cavities to seal air leaks, stabilize indoor comfort, and reduce noise.
A Retrofit Solution Without Tear-Out
Our crews install RetroFoam by drilling small access holes behind siding or at discreet points inside. The foam flows into cavities like shaving cream, surrounding wires and outlets. Once it sets, it creates a durable insulation layer. We patch, replace siding or trim, and clean thoroughly so your home looks unchanged. It will only be more comfortable.
Benefits of RetroFoam insulation
Unlike loose-fill options in closed cavities, RetroFoam does not settle. It continues performing for years.
How RetroFoam Works
RetroFoam is mixed on-site using a water-based resin, foaming agent, and compressed air. The mixture is injected into wall cavities through small access points. After the foam sets, we patch the holes and complete a final cleanup. Homeowners get an invisible improvement that makes a noticeable difference.
Trusted Installer in Otter Tail County
RetroGreen Energy is an authorized RetroFoam dealer serving Fergus Falls, Battle Lake, Pelican Rapids, and nearby communities. We understand the unique needs of west-central Minnesota homes, from older farmhouses to seasonal lake cabins. Homeowners choose us for courteous crews, clear communication, and clean installs that protect property.
Good Fits For Fergus Falls Homes
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RetroFoam wall insulation improves comfort and energy performance in Fergus Falls homes.
Get your free quote today. Call (320) 252-8888 or request a free consultation online.
RetroFoam Insulation
Panel siding injection: when siding can’t be removed






Steel, vinyl, aluminum siding:




Interior wall injection through sheet rock:

