Injection foam wall insulation · Watertown, WI

Watertown has some of the best old houses in Wisconsin. Most of them have empty walls.

The 19th-century homes near downtown and the Rock River, the early-1900s houses on the older blocks, the post-war ranches on the edges of town, the farmhouses out in the county — 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 the plaster in your living space.

Erik, the owner, does every Watertown estimate himself.

Why Watertown houses lose so much heat

It’s the era, not the builder. Much of Watertown’s housing went up long before insulated walls were standard, and the open farmland around town means nothing slows the winter wind before it hits the house.

Older homes near downtown and the river: plaster over lath, siding or brick outside, and an empty cavity in between.
Farmhouses in the surrounding towns: solid old framing with empty walls behind decades of siding.
1950s–70s 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.

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

What we do in Watertown

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 an older Watertown 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 Watertown

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 Watertown, Johnson Creek, Lake Mills, Ixonia, and Jefferson.

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

Get your free Watertown estimate

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

Watertown has some of the best old houses in Wisconsin. Most of them have empty walls.

Why Watertown houses lose so much heat

What we do in Watertown

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 Watertown

Serving Watertown, Johnson Creek, Lake Mills, Ixonia, and Jefferson.

Get your free Watertown estimate

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