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Serving Great Falls, MT and surrounding areas. (406) 216-0672
Cold drafts, ice dams, and high heating bills often come from the same source - hidden gaps letting outside air in and warm air out. Air sealing closes those gaps for good.
Air sealing in Great Falls closes the small gaps, cracks, and penetrations in your home where outside air sneaks in and conditioned air leaks out - most jobs for a single-family home take one to two days. The gaps are typically in places you would not think to look: around pipes and wiring in the attic floor, behind electrical outlets on exterior walls, and along the rim joist where your home meets the foundation. In a city that sees below-zero temperatures and strong Chinook winds, those openings cost you money every day of the heating season.
Insulation slows heat from moving through solid surfaces, but it does almost nothing to stop air from flowing through gaps. If your home already has insulation but drafts and cold spots have not gone away, air leakage is the likely reason. Combining air sealing with basement insulation addresses both problems in the parts of your home that are typically the leakiest.
The ENERGY STAR Seal and Insulate program estimates the average home leaks enough air to be roughly equivalent to leaving a window open year-round. In a Great Falls winter, that is not a small problem.
If your gas or electric bill seems out of proportion to your square footage - especially during the long Great Falls winters - air leakage is one of the most common culprits. A home leaking warm air through gaps is paying to heat the outdoors, and the colder the winter the more that waste adds up.
Cold air coming from electrical outlets, gaps around baseboards, or where walls meet the floor is a direct sign that outside air is finding its way in. Great Falls winter winds can make these drafts forceful enough to feel clearly with your hand on a cold day.
Floors that feel cold underfoot in winter - especially on the first floor above a crawl space - often mean cold ground air is rising through gaps in the floor framing. Many Great Falls homes have crawl spaces, and this pattern is one of the most common comfort complaints we hear.
Ice dams form when warm air escapes into your attic and melts snow from below - the water refreezes at the cold eave. In Great Falls, where heavy snow and sustained cold are regular, ice dams can cause real damage to roofs and gutters over time. Air sealing the attic floor is one of the most effective ways to prevent them.
Every project starts with a diagnostic test - a pressurized fan that depressurizes your home so air leaks are easy to find and measure. That test gives us a baseline number and tells us exactly where to focus. We then seal problem areas using spray foam, caulk, rigid foam, or weatherstripping depending on the location and the size of the gap. The most common areas are the attic floor, rim joists, crawl space penetrations, and the connections between living areas and unconditioned spaces.
After the sealing work is complete, we run the diagnostic test a second time to confirm the leakage rate actually improved - that before-and-after comparison is your proof the job worked. We also pair air sealing with attic air sealing on many projects, since the attic floor is often the single highest-impact location in a Great Falls home. Documentation from the diagnostic test also supports your application for NorthWestern Energy rebates and the federal tax credit for energy efficiency improvements.
Best for homeowners who want a complete picture of where their home is leaking and a systematic fix for all of it.
Suited to homes with ice dam problems, high heating bills, or an attic that is warmer than it should be.
Right for homes where cold floors and rising ground air are the main comfort complaint.
Ideal for older homes where the connection between the house structure and the foundation is open to outside air.
Great Falls sits in a part of Montana where below-zero temperatures and strong Chinook winds are a regular combination. Chinook winds can push cold air through even small openings with surprising force, turning gaps that would be a minor issue in a calmer climate into a real comfort and cost problem. A home that has never been air sealed is essentially a leaky bucket in a climate where the temperature difference between inside and outside can hit 70 or 80 degrees for weeks at a time. The older Great Falls housing stock makes this especially relevant - homes built before the 1980s have no intentional air barrier at all.
We serve all of Great Falls and the surrounding region. Homeowners in Billings, MT and Bozeman, MT deal with the same cold-climate air leakage problems, and we are available throughout central and western Montana. Call us if you are not sure whether we cover your area.
We will ask about your home's age, whether you have a basement or crawl space, and what has been prompting your concern. We reply within 1 business day and schedule an initial visit at a time that works for you.
We run a pressurized test to measure how leaky your home is, walk through the results with you, and give you a written estimate covering where we will seal, what materials we will use, and the total cost. No pressure to decide on the spot.
The crew works through the attic, crawl space, and other identified areas applying foam, caulk, and rigid foam to close gaps. Most of this work happens in spaces you do not use day-to-day - the disruption to your routine is minimal.
We run the diagnostic test again after the work to confirm the leakage rate improved. You receive documentation of the before-and-after results - useful for NorthWestern Energy rebate applications and federal tax credit claims.
We respond within 1 business day - no obligation to book. After you submit, someone from our office will call to schedule a free diagnostic visit at a time that works for you.
(406) 216-0672Every project includes a pressurized leakage test before and after the work. That comparison is documented proof the job made a measurable difference - not just a claim. You should expect this from any air sealing contractor.
We cover Great Falls and 12 service areas across central and western Montana. That regional presence means we know the local housing stock, utility rebate programs, and permit requirements - not just general air sealing practice.
NorthWestern Energy serves most Great Falls homeowners and has an active rebate program for air sealing and insulation work. We know the documentation process and will make sure you have what you need to submit your application.
Montana requires contractor licensing through the state, and we carry active workers compensation coverage. Hiring a licensed, insured contractor protects you if anything goes wrong - and is a basic standard you should verify before any contractor starts work in your home.
Air sealing done right starts with a test, ends with a test, and gives you documentation in between. That is the standard we hold every project to - because in a Great Falls winter, you deserve to know the work actually made a difference.
For information on federal tax credits and rebates available for air sealing work, see ENERGY STAR federal tax credits and NorthWestern Energy rebates.
Insulating the basement walls and rim joists alongside air sealing addresses two of the biggest sources of heat loss in a Great Falls home.
Learn moreTargeted sealing at the attic floor - the most common entry point for warm air escaping into cold attic space and causing ice dams.
Learn moreGreat Falls winter is long and hard on leaky homes. Reach out today to get a diagnostic test on the calendar before the cold sets in.