Wegner Insulation is the trusted spray foam contractor in Marion, MT, serving homeowners, builders, and businesses across the Flathead Valley. From new builds to retrofits, our team delivers insulation solutions that cut energy costs and keep properties comfortable through every Montana season. Our locally-owned company understands the specific needs of Flathead County residents and provides professional results on every job site. We take pride in our precision application and commitment to making every Marion property as energy-efficient as possible.



Marion winters are no joke, and subpar insulation lets heated air escape right through your walls, ceilings, and foundation. Our crew specializes in spray foam and other insulation types designed to handle the extreme temperature swings common in northwestern Montana. Whether you are building a cabin near the wilderness or upgrading a commercial building in town, we match the right product to your structure and budget. Investing in high-quality insulation today prevents costly heat loss and protects your plumbing from freezing during the deepest Montana cold snaps. By sealing the building envelope, we help you maintain a consistent indoor temperature regardless of the wind or snow outside.


A horse barn owner near Marion contacted us about freezing conditions inside the facility during the winter months. Our crew applied agricultural spray foam to the roof and walls, sealing drafts and adding a thick layer of thermal protection. The barn owner reported a noticeable temperature difference within days, and the horses stayed warmer without the need for extra portable heaters.
Kalispell, MT, Whitefish, MT, Columbia Falls, MT, Evergreen, MT, Somers, MT, Lakeside, MT, Bigfork, MT, Kila, MT, Hungry Horse, MT, Olney, MT, Marion, MT
Ready to improve your property's comfort and energy efficiency? Our team is here to help with insulation projects of all sizes across the Marion area and the greater Flathead Valley. Call (406) 654-4636 or reach out to [email protected] to discuss your project and schedule an estimate.
Spray foam insulation can last the lifetime of the building when installed correctly, typically 80 years or more.
Closed cell spray foam is usually the better choice for Marion because of its higher R-value per inch and moisture resistance against heavy snowmelt and ground moisture.
Yes, blown-in insulation can be installed through small holes drilled into existing walls, making it a practical option for older homes.
We do, our crew regularly applies agricultural spray foam to pole barns, horse barns, and other outbuildings throughout the Flathead Valley.
Mineral wool has a higher fire resistance rating and better sound dampening than fiberglass, though both are solid options depending on your project needs and budget.