Crawl Space Vapor Barrier
Seal moisture out of the crawl space below - the complement to sealing warm air out of the attic above.
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Serving Duluth, MN and surrounding areas. (218) 514-1692
Warm air escaping through your attic drives ice dams and high heating bills. We find and seal every gap so your home holds heat through the whole Duluth winter.
Attic air sealing in Duluth means finding and plugging the gaps, cracks, and openings where your living space connects to the attic - around light fixtures, plumbing pipes, and the tops of interior walls. Most homes can be fully assessed and sealed in a single day, with no need to leave during the work.
Many homeowners assume adding more insulation will solve their comfort problems. But insulation alone cannot stop air from moving through gaps. Air sealing has to come first - it closes the pathways, and then insulation slows the heat transfer through the surfaces themselves. Doing insulation without air sealing first is like putting a blanket over a window that is still cracked open.
If your attic has not been properly sealed, pairing this service with whole-home air sealing gives you a more complete picture of where your home is losing conditioned air and lets you address the biggest leaks in one project.
If you have seen thick ridges of ice forming along the edge of your roof in January or February - or noticed water staining on your ceilings after a warm spell - your attic is almost certainly letting warm air escape and warming the roof unevenly. Attic air sealing addresses the root cause, not just the symptom.
If your gas or electric bill spikes sharply every November and your furnace seems to run almost constantly, your attic is a likely culprit. Duluth's heating season is long, and a poorly sealed attic can add hundreds of dollars to your annual energy costs without you ever knowing why.
If your upstairs bedrooms or rooms directly below the attic feel noticeably colder than the rest of the house in winter, air is likely moving through gaps in the attic floor above those spaces. This uneven comfort is a reliable sign that the boundary between your living space and the attic is not properly sealed.
Hold your hand near a recessed light fixture or the pull-down attic stair on a cold day. If you feel cool air moving, that fixture is connected directly to your attic. This is one of the most common and most overlooked sources of air leakage in older Duluth homes - and one of the easiest for a contractor to address.
We perform attic air sealing as a standalone service and as part of larger insulation projects across Duluth and the surrounding region. Our technicians use foam, caulk, and rigid blocking materials to seal gaps around recessed lights, plumbing penetrations, wire chases, and the top plates of interior walls - the spots that account for the most air leakage in a typical older home. For homeowners who want a measurable result, we can include a blower door test to show you the before-and-after air leakage numbers.
Attic air sealing is most effective when paired with crawl space vapor barrier work and additional insulation - because a well-sealed attic combined with a dry crawl space and proper coverage means your home is defended from both the top and the bottom. We can assess both areas during the same visit and give you a combined quote if the work makes sense together.
Best for homeowners who have insulation in place but have not had gaps and penetrations addressed - particularly effective for ice dam prevention.
Suited to homeowners who want a documented measurement of improvement, or who are pursuing a Minnesota Power rebate that requires verified results.
Ideal for homes where both the air barrier and the insulation layer need upgrading at the same time to get meaningful performance gains.
Duluth records some of the coldest winter temperatures in the continental United States, with average January lows around -4 degrees Fahrenheit and extended stretches well below zero. At those temperatures, even a small gap in your attic floor lets in a rush of cold air that your furnace has to fight all day and night. What might be a minor nuisance in a milder climate becomes a serious comfort and cost problem here - which means air sealing delivers a bigger return in Duluth than in most other cities.
The city also gets roughly 86 inches of snow per season, and Duluth's dramatic temperature swings make ice dams a genuine annual threat for homeowners throughout the area. Ice dams form when heat escaping through the attic floor warms the roof deck and melts snow, which then refreezes at the cold eaves. Sealing the attic is the most effective long-term fix, and many Duluth homeowners pursue it specifically after experiencing ice dam damage to ceilings or walls.
We work throughout the greater Duluth area, including Cloquet, MN and Proctor, MN, where older wood-frame homes deal with the same ice dam and heat loss conditions that affect Duluth proper.
We respond within one business day. When you reach out, it helps to mention whether you have had ice dams, high heating bills, or comfort issues - that gives us a head start on what to look for. The initial estimate visit is free.
A technician accesses your attic, looks for obvious gaps and problem areas, and may use a blower door test to find less visible leaks. The assessment takes 30 to 60 minutes. You receive a clear written quote that explains what was found and what we plan to do.
The technician works in the attic applying foam, caulk, or rigid blocking to seal gaps around pipes, wires, fixtures, and wall tops. Most jobs finish in two to six hours. Your living space stays undisturbed throughout.
Before leaving, we walk you through what was done. If a blower door test was used, we show you the before-and-after readings. If your project qualifies for a Minnesota Power rebate, we help you complete the paperwork - keep a copy of your invoice for tax credit purposes at year end.
Free estimate, no obligation. We respond within one business day.
(218) 514-1692Older Duluth homes - built with balloon framing and decades of updated plumbing and wiring running through the ceiling - typically have far more leak points than newer construction. We use a systematic approach to locate every significant gap, not just the obvious ones around visible fixtures. Missing the small ones is how ice dams come back the following winter.
A blower door test gives you a real number - how much air was leaking before and how much is leaking after. That measurement is not just reassuring; it is often required to qualify for a Minnesota Power rebate. We can include testing in your project so you have the documentation you need.
Minnesota Power serves Duluth and offers rebates for qualifying home energy improvements. The program has an annual budget cap and can close early in the year once the money runs out. We are familiar with the filing process and help homeowners capture rebate funds at the estimate stage, not after the work is already done.
Minnesota requires any contractor performing residential construction and remodeling work to hold a valid state license from the Department of Labor and Industry. You can verify our license status online before you sign anything - that accountability is part of what a license means, and it is something worth confirming with any contractor you consider hiring.
When the work is done right, Duluth homeowners feel the difference before the first hard freeze of the season - and they see it in their heating bills all winter long. That is the outcome we are aiming for on every job.
For more on the science behind attic air leakage, see the University of Minnesota Extension ice dam guide and the U.S. Department of Energy air sealing resources.
Seal moisture out of the crawl space below - the complement to sealing warm air out of the attic above.
Learn moreA whole-home approach to finding and sealing air leaks throughout the building envelope, not just the attic.
Learn moreMinnesota Power rebate funds are limited and close early most years - scheduling now gives you the best chance of capturing that money.