Spray Foam Insulation in Inver Grove Heights, MN

Spray foam insulation in Inver Grove Heights mostly involves homes built in the last 40 years. Point2Homes' summary of 2019-2023 census data gives a median construction year of 1990, with 16.5% of homes added from 2000 to 2009. The city formed in 1965 when the village of Inver Grove merged with Inver Grove Township, and its 30 square miles of rolling land along the Mississippi filled in with subdivisions over the following decades.

Code-built is not airtight

Homes from the 1980s and 1990s were built to energy codes far looser than today's. Common gaps: rim joists with batts or nothing, bonus rooms over garages with cold floors, vaulted ceilings with shallow insulation, and attics where the original fill has settled. Even 2000s homes often have air leaks around recessed lights and attic hatches.

Basement finishing

Many owners here finish the lower level, and walkout lots are common on the city's hills. Before framing, we spray closed-cell foam on the rim joist and on concrete walls, which keeps moist indoor air off the cold foundation.

Audits in Dakota County

Home Energy Squad visits for Dakota County residents with CenterPoint gas are scheduled through ICF; those without CenterPoint gas go through the Center for Energy and Environment.

Bonus rooms and vaulted ceilings

Two-story homes and split-levels from the 1990s often have a bonus room over the garage and a vaulted living room. The bonus room floor sits over unheated space, and the vault leaves little room for insulation. Foam in the garage ceiling seals out cold and fumes, while vaults can sometimes be improved from the attic side if the bays are reachable.

Larger lots on the south side

The southern part of the city is more rural, with bigger lots, outbuildings and some older farmhouses. If you have a shop or detached garage you want to heat, closed-cell foam on walls and roof is a common choice because it seals and insulates in one pass.

What it typically costs

HomeGuide's national figure for spraying foam on rim joists is $2,000 to $2,500, and an average attic upgrade runs $1,000 to $2,700. We price your house after measuring it.

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