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Invisible gaps in your home let cold air in and warm air out all winter long. We find and seal every one of them so your furnace stops fighting a losing battle.
Invisible gaps in your home let cold air in and warm air out all winter long. We find and seal every one of them so your furnace stops fighting a losing battle.
Air sealing services in Mandan, ND means finding and closing the gaps, cracks, and openings where outside air enters your home and conditioned air escapes - work that typically takes one day and happens primarily in your attic, basement, and crawl space with minimal disruption to your living areas.
These openings are usually invisible from inside your home. They hide around light fixtures, behind electrical outlets, where pipes and wires pass through walls and ceilings, and along the bottom of your attic floor. Every one of them is a path for cold air to travel straight into your living space. In Mandan's climate, where the heating season runs from October through April, those gaps cost you real money every single month. Air sealing closes them for good. Pairing this work with basement insulation or other insulation upgrades in the same visit is one of the most cost-effective ways to improve your home's overall performance.
Most of the work is invisible when it is done - foam and caulk applied inside wall assemblies and attic cavities that you will never see but will absolutely feel the next time temperatures drop below zero.
If your gas or electric bill climbs dramatically from October through March - more than you would expect just from running the heat - air leakage is one of the most common reasons. In Mandan's climate, a leaky home forces your furnace to run almost constantly to replace warm air that keeps escaping, and you feel that directly in what you pay each month.
On a cold or windy day, hold your hand near electrical outlets on exterior walls, along baseboards, or below recessed ceiling lights. If you feel cool air moving, outside air is finding its way in through gaps in the wall or ceiling. This is especially common in Mandan homes built before the 1980s, where wiring and plumbing penetrations were rarely sealed during original construction.
If one room or corner of your home never seems to reach a comfortable temperature in winter, uneven air sealing is often the cause. Cold air infiltrating through gaps in that part of the house overwhelms the heat from your vents, creating a persistent cold spot that insulation alone usually cannot fix. The air pathway has to be closed first.
Ice dams - ridges of ice along the edge of your roof - are a classic sign that warm air is escaping from your living space into your attic, heating the roof deck, and melting snow that refreezes at the cold eaves. In Mandan's heavy-snow winters, ice dams can cause real damage to your roof and gutters, and they almost always point to an air sealing problem in the attic floor.
Air sealing is not a single product - it is a process of systematically finding and closing every path that air can travel through your home's envelope. We work through your attic floor first, because that is where the most significant leakage typically occurs in older Mandan homes - around top plates, light fixtures, plumbing and electrical penetrations, and chimney chases. We use a combination of spray foam for larger gaps and caulk for smaller cracks, choosing the right material for each opening based on its size, location, and movement characteristics. Many homeowners pair this with attic air sealing as a focused follow-up if the attic needs dedicated attention beyond the whole-house scope.
We also address the basement and crawl space - another major source of leakage in the Mandan-area homes we work in. Rim joists, foundation sill plates, and penetrations where mechanical systems enter the building are all common problem areas that get missed when contractors only focus on the obvious spots upstairs. If your project also involves insulation, we coordinate both in the same visit so you get the combined benefit without paying for two separate mobilizations. Connecting air sealing with basement insulation is a common combination that addresses the bottom of your home's envelope in one scope of work.
Best for homeowners who want a comprehensive improvement. Covers attic, basement, crawl space, and wall penetrations in a single visit.
Suited to homes where ice dams or high heating costs point to attic floor leakage as the primary source. Targets the most impactful area first.
Ideal for homes where cold floors and drafts along the bottom of exterior walls point to foundation-level leakage. Often combined with basement insulation.
The most cost-effective approach for most Mandan homes - combining sealing and insulation upgrades in one visit to address both heat transfer and air movement at once.
Mandan sits on the open Northern Plains, where sustained winds are common throughout fall and winter months. Wind pressure forces cold air through gaps much more aggressively than still-air conditions would - leaks that seem minor on a calm day become significant problems during a January windstorm. Combined with a heating season that regularly runs from October through April, those gaps cost Mandan homeowners more money per year than the same gaps would in almost any milder climate. A significant share of Mandan's homes were also built before modern building codes required tight construction, meaning gaps around pipes, wires, and framing were simply left open as standard practice. Freeze-thaw cycles between seasons continue to widen those openings over time, so a home that was reasonably tight five or ten years ago may have developed new leaks since.
We serve the full Mandan area and understand the specific conditions here. Homeowners in Bismarck, ND face the same wind and cold on the same housing stock, and the air sealing work looks very similar - older homes with lots of unsealed penetrations and newer builds where rim joists and attic bypasses deserve attention. In Washburn, ND and other smaller communities north of Mandan, the same climatic forces apply and older homes benefit just as much from a thorough sealing job. Call or reach out online and we will assess where your home stands and what it will take to fix it.
Reach out by phone or through our contact form and we respond within one business day. We will ask about your home's age, what symptoms you have noticed, and when you want the work done - so we can schedule an assessment at a time that works for you.
We inspect your attic, basement, and crawl space for air leakage points. Many jobs also start with a blower door test to measure exactly how leaky your home is. You receive a written estimate explaining what we recommend, where we will be working, and what it will cost.
The crew works through your attic, basement, and crawl space with foam and caulk, sealing every gap around pipes, wires, ducts, and framing. Most of the work happens out of sight in spaces you rarely use. A thorough job on a typical Mandan home takes most of one day.
Once sealing is complete, we run a second blower door test and show you the before-and-after numbers. No curing time required - your home is ready to use immediately. We walk you through what was done and flag anything else worth knowing about.
Free assessment and written estimate. We test before and after so you can see exactly how much your home improved.
(701) 291-0855A blower door test run before and after the work gives you measurable proof that the leakage was actually reduced - not just a contractor's word that the job is done. That before-and-after data is yours to keep. It is the only honest way to demonstrate that air sealing worked, and it is part of how we do every job.
We work specifically in the Mandan and Bismarck area, where winters are long, winds are strong, and older housing stock has had decades to develop leakage problems. We know where the biggest gaps tend to hide in homes built in this region and climate zone. The Building Performance Institute sets the professional standard for this work, and we follow those practices on every job.
Sealing a home tightly without checking ventilation can create indoor air quality problems. We assess your home's ventilation as part of the job and let you know if any adjustments are needed. You should never be left with a home that is sealed but stuffy - and you will not be.
MDU Resources and other regional utilities have historically offered rebate programs for energy efficiency improvements in the Mandan area. Federal energy efficiency tax credits may also apply to this work. We help you understand what is currently available so you do not leave money on the table - ask us when you call.
Choosing Mandan Insulation for air sealing means working with a local team that tests, documents, and stands behind every job. We know this climate, we know this housing stock, and we know what it takes to make a home in Mandan actually tight enough to make a difference on your bill.
Insulating basement walls and rim joists to address the bottom of your home's envelope - often paired with air sealing for maximum impact.
Learn MoreDedicated sealing of the attic floor to stop warm air from escaping into your attic and causing ice dams along your roofline every winter.
Learn MoreLate summer and early fall is the ideal window - contractors book up fast, and utility rebate programs can change. Call today and get it done before the first freeze.