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Mandan Insulation installs spray foam, blown-in, attic, and crawl space insulation for homes and businesses across central North Dakota. One call, free estimate, no obligation.
Mandan Insulation is a full-service insulation contractor based in Mandan, ND, offering 16 specialized services for homes and commercial buildings. We serve 12 cities and communities across central and western North Dakota. Every job starts with a free on-site estimate and a plain-language explanation of what your home actually needs.
Drafty walls and sky-high heating bills? Spray foam seals every gap and adds high-performance insulation in one step.
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Heat escaping through a thin attic is the top reason furnaces run nonstop - the right depth keeps warmth where it belongs.
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Blown-in loose fill fills corners and gaps that batt insulation misses, giving your attic more complete coverage.
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A complete home insulation assessment and upgrade covers attic, walls, and crawl space for year-round comfort.
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Old, damaged, or pest-contaminated insulation needs to come out before new material goes in - we handle the whole process.
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Cold floors start below your home - crawl space insulation cuts heat loss and keeps moisture from creeping in.
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Exterior walls that were never properly insulated let cold air in on every wind gust - wall insulation solves that directly.
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Gaps around pipes, wires, and fixtures leak warm air steadily - air sealing stops drafts that insulation alone cannot fix.
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An uninsulated basement rim area is like leaving a window open all winter - basement insulation closes that cold gap.
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Closed-cell foam delivers R-6 to R-7 per inch and acts as a moisture barrier - the go-to choice for cold climates.
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Open-cell foam is softer and better for interior walls and attics where sound control matters more than vapor resistance.
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Commercial buildings lose just as much energy through poor insulation - we handle warehouses, offices, and retail spaces.
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A crawl space vapor barrier blocks ground moisture before it moves into your floors, walls, and framing.
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Properly installed vapor barrier material stops moisture migration and protects your home's structure long-term.
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Sealing the attic floor stops warm air from escaping and is the most effective way to prevent ice dams on your roof.
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Retrofit insulation upgrades an existing home without a full renovation - the right solution for older Mandan houses.
Learn MoreReach out by phone or through our contact form. We will ask a few basic questions about your home - its age, size, and what is prompting the call. We respond within 1 business day and can usually schedule an on-site visit within the week. No pressure, no sales pitch.
One of our team members visits your home and inspects the areas you want addressed - attic, crawl space, walls, basement rim, or all of the above. We measure what is there, look for air leaks, and check for moisture. You get a written quote in plain language: exactly what we recommend, where, and what it will cost.
Once you approve the plan, we schedule the installation. Most jobs finish in a single day. Our crew cleans up before leaving and walks you through the completed work. Within your first full heating cycle, you will feel the difference - rooms hold temperature more steadily and your furnace runs less.
Every project is covered by liability insurance and completed by a licensed insulation contractor. You should ask any contractor for proof of both before they start work on your home.
We have been working on homes across the Mandan-Bismarck area since 2018. We know this climate, this housing stock, and what local homeowners are up against every winter.
We come to your home, assess what is actually needed, and give you a written quote at no charge. You decide whether to move forward - no pressure, no deposit required to get your estimate.
If something does not look right or perform as promised after we complete the job, we come back to fix it. Properly installed insulation should last the life of your home - that is the standard we hold ourselves to.
Ready to get started? Call (701) 291-0855 or request a free estimate online.
They came out, looked at everything, and gave us a quote the same day. The attic job was finished before noon and we could actually feel a difference that first week the temperature dropped. The upstairs bedrooms are finally the same temperature as the rest of the house.
Karen T., Bismarck, ND - Attic insulation
We had spray foam done in the crawl space and the rim joists. The crew was in and out in about six hours and left the place clean. Our gas bill in January was noticeably lower than the year before - not a huge number but it was real and consistent.
Derek M., Mandan, ND - Spray foam insulation
I called to ask about blown-in insulation for an older ranch house and they actually talked me through what we needed before I even scheduled. The install was straightforward and they showed me the depth markers in the attic before they left so I could see it was done right.
Sandra O., Lincoln, ND - Blown-in insulation
We respond within 1 business day. There is no obligation to move forward - the estimate is completely free. After you submit, someone from our office will call you to schedule a free on-site visit where we assess your home and explain exactly what we recommend.
(701) 291-0855Mandan Insulation is based in Mandan, ND and serves 12 cities and communities across central and western North Dakota, including Bismarck, Lincoln, Dickinson, and more. We offer same-week scheduling for most projects and are typically on-site within days of your first call.
Mandan sits in Climate Zone 7 - one of the coldest federal climate designations in the lower 48. Winter lows regularly drop below zero, and wind chills push well past -30 degrees Fahrenheit. The federal government recommends attic insulation levels here that are roughly double what a home in a mid-Atlantic state would need.
Probably not at full effectiveness. Insulation standards in the 1960s and 1970s were far lower than today, and many older Mandan homes were built with just a few inches in the attic. Blown-in insulation settles and compacts over decades, losing some of its rated effectiveness. A quick measurement from a contractor will tell you where you stand.
Closed-cell is the right choice for exterior walls and any area exposed to North Dakota cold. It acts as a moisture barrier and delivers R-6 to R-7 per inch - roughly double what open-cell provides. Open-cell is better suited to interior walls and attic decks where sound control matters more than vapor resistance.
Insulation slows heat transfer, but it does not stop air movement. Gaps around pipes, wiring, light fixtures, and attic hatches let conditioned air escape and cold air in regardless of how much insulation sits on top of them. Air sealing - done before or alongside insulation - is what closes those pathways. The U.S. Department of Energy covers both in their home performance guidance at energy.gov.
Ice dams form when heat escaping through the attic melts snow on the upper roof, which then refreezes at the cold eaves. Properly insulating and air-sealing the attic keeps the roof deck cold and even, so snow melts uniformly and drains properly. Learn more from the U.S. Department of Energy insulation guide.
Late summer through early fall - roughly August through October - is the best window. The weather is mild, attic conditions are comfortable, and you will have the work done before heating season begins. Contractors get busy quickly once the first cold snaps arrive, and scheduling can stretch out by several weeks. Planning ahead puts you in control of the timing.
Mandan Insulation is a licensed and insured insulation contractor based in Mandan, ND, serving 12 cities and communities across central and western North Dakota since 2018. We are licensed through the State of North Dakota and carry full liability insurance on every job we do.
Our team has completed insulation projects across the full range of home types in this market - from 1950s ranch houses near downtown Mandan to newer two-story builds on the west side of town. We offer 16 insulation services covering everything from spray foam and blown-in attic insulation to vapor barriers and commercial projects.
If you want to know more about who we are and how we work, visit our About page.
If your floors feel cold in winter or you notice moisture smells coming from below, your crawl space is likely under-insulated or missing a vapor barrier. Cold crawl spaces pull heat from the floors above and can allow moisture to migrate into your framing.
Hold your hand near an electrical outlet on an exterior wall on a cold day. If you feel cold air moving, warm air is escaping through gaps in the wall cavity. Frost forming on interior walls near baseboards is a more serious signal and warrants a prompt assessment.
Yes. North Dakota administers a federally funded Weatherization Assistance Program for income-qualifying homeowners. The income thresholds are higher than many people expect. A federal tax credit covering 30% of project costs up to $1,200 per year is also currently available for existing homes.
The North Dakota Weatherization Assistance Program is the state agency overseeing home energy efficiency funding for qualifying households. Ready to find out what your home needs? Call (701) 291-0855 for a free estimate.
Mandan is a city of about 24,000 residents on the west bank of the Missouri River, directly across from Bismarck. Most homes here are owner-occupied, and a large share were built between the 1950s and 1970s - well before North Dakota adopted its current energy efficiency requirements. That older housing stock, combined with winter temperatures that regularly drop below zero, creates steady demand for insulation upgrades across the city. Learn more about the city at the City of Mandan website.
Whether your home is near Fort Abraham Lincoln State Park to the south - where General Custer was stationed and the Mandan On-A-Slant Indian Village stands as one of North Dakota's most recognized historic sites - or out in one of the newer subdivisions on the west and south sides of town, we serve all of Mandan. Ranch homes near downtown and two-story builds in newer neighborhoods have different insulation needs, and we approach each one based on what the house actually requires. The Heart River runs through the south side of the city before joining the Missouri, and homes in that area can see moisture and drainage issues in spring that make crawl space insulation and vapor barriers especially important.
The Bismarck-Mandan area averages around 40 inches of snow per year, with frost depths reaching 48 to 60 inches - conditions that stress older homes every season. Mandan Insulation was built specifically to serve this community, and we understand what homes here are up against. Learn more about Mandan housing data from the U.S. Census or call us directly to schedule a free estimate.
By appointment only, no walk-ins.
Mandan Insulation
504 2nd St NW
Mandan, ND 58554
Always open, 24/7.
Call Mandan Insulation today for a free on-site insulation estimate in Mandan and surrounding North Dakota communities.