Northwest Drywall & Roofing Supply
Verified Pro
18+ years online5.0
Insulation Services in Great Falls, MT
Compare 21 insulation services contractors near you in Great Falls and surrounding area with an average rating of 4.7/5. Get free quotes, read reviews, and find the right pro for your project.
Last updated March 22, 2026
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Other Businesses in This Area
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5.015+ years onlineMaddox Roofing & Construction, INC.
5.07 mo onlineMogli Insulation
5.0Quality 1st Insulation
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4.630+ years onlineHabitat for Humanity ReStore
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4.228 years onlineInsulation Services in Nearby MT Cities
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Insulation Services in Great Falls, MT
Great Falls, Montana insulation contractors handle one of the most demanding markets in the lower 48: -30°F winters with deep wind chills, hot summers, and the persistent strong chinook winds. Closed-cell spray foam dominates new construction along with R-21+ batts in 2x6 walls, while existing Great Falls homes lean toward fiberglass batt upgrades plus blown cellulose or spray foam in attic floors. Montana residential energy code requires R-49 attics and R-21 walls. NorthWestern Energy offers prescriptive insulation rebates plus federal IRA tax credits covering 30% of qualifying insulation costs up to $1,200 annually.
Great Falls' extreme winter cold and persistent strong winds drive demand for high R-values and proper air sealing. Closed-cell spray foam at rim joists is particularly valuable, stopping the air infiltration that wind drives at the foundation level. Many older Great Falls homes need attic upgrades from R-19-R-30 (typical 1960s-80s construction) up to R-49+. The Malmstrom AFB community drives steady demand for energy efficiency improvements.
Frequently Asked Questions
- What insulation works for Great Falls?
- R-49+ attic insulation, R-21 wall insulation, basement rim joist spray foam, and proper air sealing handle Great Falls winters effectively. The combination of air sealing and R-value matters as much as raw R-value alone given the persistent strong winds.
- Should I insulate my basement?
- Yes, particularly the rim joist. Closed-cell spray foam at rim joists adds R-13-R-21 in just 2-3 inches and stops the air infiltration that wind drives. The energy savings during chinook events are substantial.
- What rebates apply?
- NorthWestern Energy offers prescriptive insulation rebates of $0.15-0.30/sq ft for attic and wall upgrades. Federal IRA tax credits cover 30% of qualifying insulation costs up to $1,200 annually.
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