At the south end of Lake Winnebago
Spray Foam Insulation in Fond du Lac, WI
Historic districts, river neighborhoods and record cold.
- Free on-site estimates
- Written quote by area with R-values
- Damp basements and roof leaks flagged before work

Older Homes at the Foot of the Lake
Spray foam insulation in Fond du Lac covers a city with deep roots and serious winters. Fond du Lac has 20 National Register listings, including four historic districts such as South Main Street, and its record low is -41°F, set January 30, 1951. It averages about 38 inches of snow a year.
Historic and older homes
Older houses near downtown and South Main often have empty walls, thin attics and stone or block foundations. We seal and fill attics, foam rims and dense-pack walls from behind siding or inside, without changing how the house looks.
Near the river
The east and west branches of the Fond du Lac River meet in the city and flow into Lake Winnebago near Lakeside Park. Homes on low ground near the river may have damp basements, so we check before insulating below grade.
Postwar neighborhoods
Ranches from the 1950s and 60s need the usual: sealed ceilings, more attic depth and rim joist foam.
Costs
HomeGuide's figures: attic jobs $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
We start with a look at the basement and the attic, the two places that matter most in an older house. Older homes in the historic districts often have plaster walls and early wiring, so we check every cavity before planning dense-pack. Attic and rim work usually come first, since they give the most comfort for the money, and walls can follow. Everything is priced area by area in writing.
About Fond du Lac
- Record temperatures. The record low is -41°F (January 30, 1951) and the record high 111°F (July 13, 1936); average snowfall is 38.0 inches.
- River meets lake. The east and west branches of the Fond du Lac River meet in the city and flow into Lake Winnebago near Lakeside Park.
- Historic city. Fond du Lac has 20 National Register listings, including four historic districts such as South Main Street.
- Manufacturing. Mercury Marine, the largest employer, has about 2,500 employees.

Fond du Lac Questions
Do you work in Fond du Lac?
Yes. It is at the south end of our Lake Winnebago area.
Can you insulate a historic South Main home?
Yes. The work is done from inside or behind siding, with patches hidden.
My basement near the river gets damp. Can I insulate?
After any water is handled, closed-cell foam is a good choice.
What gives the most value first?
Attic sealing and the rim joist.
Free Estimates in Fond du Lac, WI
Free on-site estimates in Fond du Lac.
Spray Foam Insulation Near Fond du Lac
- Spray Foam Insulation in Oshkosh, WI
- Spray Foam Insulation in Neenah, WI
- Spray Foam Insulation in Algoma, WI
- Spray Foam Insulation in Clayton, WI
- Spray Foam Insulation in Omro, WI
- Spray Foam Insulation in Winneconne, WI
- Spray Foam Insulation in North Fond du Lac, WI
- Spray Foam Insulation in Ripon, WI
- Spray Foam Insulation in Berlin, WI
- Spray Foam Insulation in Waupun, WI
- Spray Foam Insulation in Chilton, WI
- Spray Foam Insulation in New London, WI