Injection foam wall insulation · Franklin, WI

Franklin and Greenfield homes look tight from the street. The walls tell a different story.

The 1950s–60s ranches that line Greenfield, the older farmhouses and 1970s–80s homes across Franklin — many have little or nothing in the walls. Cozy Walls fills them with injection foam from the outside, in a day or two, without touching a wall in your living space.

Erik, the owner, does every Franklin estimate himself.

Why Franklin houses lose so much heat

It’s the era, not the builder. A lot of homes here went up before insulated walls were standard, and even later homes often got thin batts that slumped or left gaps.

1950s–60s Greenfield ranches: empty walls, or fiberglass batts we can usually fill around. Loose blown-in insulation we check for at the estimate, because foam can’t flow through it.
Older Franklin farmhouses: solid old framing with empty walls behind decades of siding.
Brick and stone fronts: we drill through the mortar joints, fill the walls, and patch the mortar to match.

The result: a furnace that runs all winter and a house that still feels drafty.

What we do in Franklin

Whole-home wall insulation

Every exterior wall filled with injection foam from the outside. Most homes in one day; two-story or over 1,400 sq ft in two.

The one room that never warms up

Usually an open rim joist or an empty exterior wall. We seal the rim joist and fill the walls around it.

Rim joist and basement walls

The leakiest spots in a Franklin or Greenfield basement, sealed with foam. Standard rim joist sealing is a flat $2,500, or $2,000 with a wall job.

Proof, not promises

Blower-door test and thermal scan before and after on every whole-home job.

What the day looks like

Real Cozy Walls jobs in Southern Wisconsin this month.

What it costs in Franklin

Insulate all of your exterior walls for as little as a $5,000 service (based on square footage) — that’s $3,575 net after the $1,425 Focus on Energy rebate check* that we file for you. Military ($750**), first responder, teacher, and 60+ ($500**) discounts apply on whole-home projects. Show us a lower written quote for the same scope and we’ll beat it by $500. Erik gives you the number in writing at the estimate, and it’s good for 30 days.

*Focus on Energy is a Wisconsin program. Rebates are not available on Illinois homes.

**Discounts apply to whole-home projects with a minimum job size of $5,000. One discount per household.

Serving Franklin, Greenfield, Hales Corners, Greendale, and Muskego.

Free estimate. Erik, the owner, comes out himself.

Get your free Franklin estimate

No pressure. No sales script. Just Erik and real numbers.

Franklin and Greenfield homes look tight from the street. The walls tell a different story.

Why Franklin houses lose so much heat

What we do in Franklin

Whole-home wall insulation

The one room that never warms up

Rim joist and basement walls

Proof, not promises

What the day looks like

One row of siding off

Foam in

Siding back on

What it costs in Franklin

Serving Franklin, Greenfield, Hales Corners, Greendale, and Muskego.

Get your free Franklin estimate

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