At the north end of Lake Winnebago
Spray Foam Insulation in Neenah, WI
Paper-town houses from before 1940 and a big postwar building wave.
- Free on-site estimates
- Written quote by area with R-values
- Damp basements and roof leaks flagged before work

A Paper Town's Older Houses
Spray foam insulation in Neenah mostly means upgrading older homes. ACS data for 2019 to 2023 puts the median year built at 1970, with about 17% of homes from 1939 or earlier and 16% from the 1950s. The city grew fast after the war, from about 12,400 people in 1950 to nearly 23,000 in 1970, and it is home to the paper company that was founded here in 1872.
Pre-war homes
Older houses near downtown and the lake often have empty walls and balloon framing that lets air run from the basement to the attic. We seal the top and bottom of those cavities, dense-pack the walls and fill the attic.
Postwar homes
1950s and 60s ranches tend to have shallow attics with recessed lights and bare rim joists. Sealing the ceiling, filling to depth and foaming the rim make a big difference.
Near the water
Neenah sits on Lake Winnebago, Little Lake Butte des Morts and the Fox River, and the area's clay soils hold water. We check basements for moisture before insulating below grade.
Costs
HomeGuide's national figures: attic insulation $1,000 to $2,700, rim joist foam $2,000 to $2,500, dense-pack $1.60 to $4.20 per square foot. Written estimates after a visit.
Planning the work
Most Neenah jobs start in the attic, since that is where the most heat escapes, then move to the rim joist. In older homes with balloon framing, sealing the tops of the wall cavities from the attic is part of that first step and makes a noticeable difference by itself. Walls follow if they are empty, and we check wiring first. Each area is priced on its own line so you can decide the order.
About Neenah
- Older housing stock. Median year built is 1970, with 17.1% of units from 1939 or earlier and 16.1% from the 1950s (ACS 2019 to 2023).
- Postwar growth. Neenah grew from 12,437 residents in 1950 to 18,057 in 1960 and 22,902 in 1970; the 2020 census counted 27,319 and 12,164 housing units.
- Paper roots. Kimberly-Clark formed in Neenah in 1872, and the city incorporated in 1873.
- Lakes and island. Neenah lies on Lake Winnebago, Little Lake Butte des Morts and the Fox River and shares Doty Island with Menasha.

Neenah Questions
Do you work in Neenah?
Yes. Neenah is at the north end of our Lake Winnebago area.
Can you insulate a balloon-framed house?
Yes. Sealing the open cavities at the top and bottom stops a major air path, then we fill the walls.
My 1960s ranch has cold floors. Why?
Usually an open rim joist. Closed-cell foam fixes it.
Is my basement too damp to insulate?
We check during the visit. Active water must be fixed first.
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