Suburban east side, rural west side
Spray Foam Insulation in Hermantown, MN
From newer subdivisions to 1930s homestead farmhouses and the shops behind them.
- Free on-site estimates
- Written quote showing material, thickness and R-value for each area
- Attics, rim joists and basements checked for moisture before anything is covered
A Growing Suburb With Rural Roots
Spray foam insulation in Hermantown deals with two kinds of property. The eastern part of the city, near the Miller Hill area, is a lower-density bedroom community with newer homes. The western part is still rural, with acreages, outbuildings and older farm properties. Hermantown grew quickly: 26.4 percent between 2000 and 2010, to 9,414 people, and to 10,221 by 2020, with 3,867 housing units and just 4.4 percent vacancy.
Newer homes
Houses built during that growth tend to have insulated walls and reasonable attic depth, but air leaks still show up at attic penetrations, bonus rooms over garages and the rim joist. Foam over the garage, in knee walls and at the rim often fixes the cold rooms that newer houses still have.
The Jackson Project farmhouses
During the Depression the federal government built the Jackson Project here, finished in 1937: 84 homesteads with brick farmhouses on five- or ten-acre plots. Some of those homes are still in use. Masonry walls and older attics call for a different approach than a 2005 two-story, usually attic sealing and insulation plus foam at the foundation.
Shops and garages
Many Hermantown lots have a detached garage or steel building. Closed-cell foam on the steel stops condensation and lets you heat the space.
Zone 7 basics
Hermantown is in St. Louis County, which puts it in Climate Zone 7 and frost Zone I. That means R-49 ceilings in the 2012 IECC table and 5-foot footings. Get a free estimate
What to Know in Hermantown
- Growth. Hermantown's population grew 26.4% from 2000 to 2010 and reached 10,221 in 2020, with 3,867 housing units and 4.4% vacancy.
- Jackson Project. The federal Jackson Project, completed in 1937, built 84 homesteads with brick farmhouses on five- or ten-acre plots, one of two such projects in Minnesota.
- Two halves. Hermantown's eastern part is a lower-density bedroom community near Miller Hill, while the western part remains rural; the city was incorporated December 31, 1975.
- Code basics. St. Louis County is in Climate Zone 7 (R-49 ceilings in the 2012 IECC table) and frost Zone I (5-foot footings).
Hermantown Questions
My newer Hermantown house has a cold bonus room. Can foam fix it?
Often. Rooms over garages lose heat through the floor and knee walls. Foam in those areas, plus sealing at the garage ceiling, is a common fix.
Can you insulate my shop and house on one visit?
Often, yes. We list each building separately on the quote.
Do brick farmhouses need special treatment?
Masonry walls are not easy to insulate from inside without moisture planning. We usually focus on the attic and foundation first.
Is Hermantown in the same climate zone as Duluth?
Yes. Both are in St. Louis County, Climate Zone 7.
Free Estimates in Hermantown, MN
Free estimates across Hermantown, east and west.
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