Living in Whitefish means enjoying breathtaking scenery, but it also requires preparing for extreme temperature fluctuations. At Wegner Insulation, we specialize in high-performance insulation solutions designed to seal your building envelope, reduce energy consumption, and maintain consistent indoor temperatures. Whether you are retrofitting a historic cabin near Whitefish Lake or managing a new commercial development downtown, our certified team delivers premium spray foam and fiberglass applications tailored to the unique climate challenges of the Northern Rockies.



Proper insulation is more than just stuffing walls; it is about creating a comprehensive thermal barrier that prevents heat loss and moisture intrusion. In Whitefish, where heavy snow loads and sub-zero temperatures are typical, standard insulation often falls short. We focus on modern building science principles, using advanced materials such as closed-cell spray foam and mineral wool to eliminate thermal bridging and air leaks. By upgrading your insulation, you not only extend the lifespan of your HVAC system but also safeguard your structure against the moisture-related issues prevalent in mountain environments.





Choosing the right contractor in Montana is critical because the stakes are high—poor insulation can lead to frozen pipes, ice dams, and astronomical heating bills. Wegner Insulation combines local dedication with top-tier building science. We don’t just install products; we analyze your home’s unique architecture to prescribe the best solution. Our team is responsive, transparent, and committed to helping you navigate the complexities of energy efficiency. When you choose us, you are investing in a warmer, quieter, and healthier indoor environment for decades to come.
We are proud to serve the greater Flathead Valley and surrounding communities.
Kalispell, Columbia Falls, Olney, Halfmoon, Polebridge, Reuter, Ramsey, Big Mountain, Happy Haven, Lakeside
Flathead County, Lake County, Glacier County, Lincoln County
Location: Whitefish Lake, MT
Challenge: A luxury log home faced severe drafts and cold floors due to an uninsulated crawl space and aging fiberglass in the rim joists.
Solution: Our team removed the damaged fiberglass and applied 3 inches of Closed Cell Spray Foam to the foundation walls and rim joists.
Result: The homeowner reported an immediate 15-degree increase in floor temperature and a significant reduction in propane usage during the following winter.
Don't let the heat escape your home this season. Contact Wegner Insulation today to schedule your consultation and take the first step toward a more energy-efficient future.
Phone: (406) 654-4636 Email: [email protected]
In our climate zone, the Department of Energy generally recommends an R-value between R-49 and R-60 for attics. This level of thermal resistance is crucial for preventing heat from escaping through the roof during our long, cold winters.
Yes, ice dams are often caused by warm air leaking into the attic and melting snow on the roof. By air-sealing the attic floor and roof deck with spray foam, we stop this heat loss, keeping the roof deck cold and significantly reducing the formation of ice dams.
For exterior walls and basements in Montana, closed-cell foam is often preferred because it has a higher R-value per inch and acts as a vapor barrier. This is vital for managing the moisture and condensation issues associated with our significant temperature differences.
Most residential retrofit projects, such as attic blow-ins or crawl space encapsulation, can be completed in one to two days. Larger projects, like spray foaming a new construction home, may take 3 to 5 days, depending on the square footage and complexity.
It depends on the condition of the existing material. If the old insulation is dry and mold-free, we can sometimes add blown-in insulation on top. However, if there is water damage, rodent infestation, or if we are switching to spray foam, the old insulation must be removed to ensure a proper seal and healthy air quality.