Bismarck Insulation helps Bismarck homeowners stop paying to heat the outdoors. From spray foam to blown-in attic upgrades, we find the weak spots and fix them right - so your home stays comfortable all winter.
Bismarck Insulation is a licensed insulation contractor in Bismarck, ND, offering 16 insulation and air sealing services for homes and businesses across 12 cities. Whether your heating bills have been climbing for years or you have a crawl space that never seems to dry out, we assess the whole picture and give you a clear plan before anyone picks up a tool.
Cold air sneaking in through gaps in your walls or crawl space? Spray foam expands to fill every crack and seals air leaks at the same time, giving Bismarck homes a tight thermal barrier that batts cannot match.
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Heat rises - and an under-insulated attic is the biggest escape route in most Bismarck homes. Adding the right depth of attic insulation keeps your furnace from working overtime all winter.
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Blown-in material fills your attic floor evenly, covering every corner and irregular space without tearing anything out. It is one of the fastest ways to upgrade an older Bismarck home that is losing heat through the ceiling.
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Is your home always drafty and expensive to heat? A whole-home insulation assessment finds the weak spots - attic, basement, walls - and addresses them together so every room stays comfortable.
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Old insulation that is wet, compressed, or contaminated does more harm than good. We remove it safely and prepare the space for a fresh installation that actually performs.
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A cold, uninsulated crawl space pulls heat out of your floors and drives up your heating bill. Insulating it keeps the area dry, protects pipes from freezing, and makes the rooms above noticeably warmer.
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Exterior walls without insulation let cold air blow straight through your outlet boxes in January. Blown-in wall insulation can be added through small holes with minimal disruption to your home.
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Insulation slows heat transfer, but only air sealing stops drafts cold. Sealing gaps around pipes, wires, and fixtures is often the step that makes the biggest difference in how a home feels.
Learn MoreReach out by phone or through our contact form. We will ask a few quick questions about your home and what you have been experiencing - high bills, cold rooms, ice dams. We respond within 1 business day and schedule a free visit at a time that works for you.
A contractor comes to your home and looks at the actual space - attic, crawl space, basement, walls - wherever the problem is. You get a written, itemized estimate that explains what we recommend and why. No surprises, no vague numbers. Take your time to compare.
Once you approve the estimate, we schedule and complete the work. Most jobs finish in a single day. Before we leave, we walk you through what was done and make sure you have everything you need for rebates or tax credits. Your home should feel different by the first cold night.
Bismarck Insulation holds a valid North Dakota contractor license and carries full liability and workers' compensation coverage on every project. You can verify our license number before anyone sets foot in your home.
We live and work in Bismarck. We know how cold January gets, we know the older neighborhoods near the Capitol, and we know the difference between a quick fix and a job that holds up through a North Dakota winter.
Every estimate includes a visit to your actual space. You receive a written, itemized quote - not a ballpark number over the phone. You are never pressured to commit on the same day.
The price in your estimate is the price you pay unless you ask for something different. We do not add line items after work starts. Sixteen services, one honest price upfront.
Ready to get started? Call (701) 299-5341 or send us a message.
"I had ice dams every winter for six years. Bismarck Insulation came out, checked the attic, sealed the gaps, and added more blown-in insulation. No ice dams this past winter - first time in years."
"They scheduled the crawl space spray foam job within the week, showed up on time, and finished in one day. The floors above the crawl space are noticeably warmer now. Clear pricing with no surprise add-ons."
"Our heating bill dropped after they insulated the basement rim joists and added blown-in to the attic. The estimate was itemized so I knew exactly what I was paying for before they started."
We respond within 1 business day. This is a free, no-obligation estimate - no pressure, no commitment required. After you submit, someone from our office calls to schedule a free on-site visit where we assess your home and put together a written quote.
(701) 299-5341Bismarck Insulation serves Bismarck, ND and surrounding communities across 12 locations in North Dakota and South Dakota. We cover Mandan, Lincoln, Washburn, and cities stretching west to Williston and south to Aberdeen, SD. Most jobs can be scheduled within the same week.
Bismarck sits in one of the coldest climate zones in the U.S. Homes here need significantly more attic insulation than homes in milder states. Many houses built before the 1990s fall well short of current recommendations. The U.S. Department of Energy recommends checking your attic depth before each heating season.
Insulation slows heat transfer but does not stop air movement. Gaps around outlets, pipes, and framing let wind-driven cold air blow straight through even when insulation is present. Sealing those gaps with spray foam or caulk is the fix - not more batt insulation.
Ice dams form when heat escapes through a poorly insulated attic, melts roof snow, and refreezes at the cold eaves. The result is water backing up under shingles. Bismarck homeowners who see icicles or ice ridges at the roofline have a clear sign the attic needs attention.
Ground moisture rises constantly in untreated crawl spaces, causing mold, rot, and cold floors. A vapor barrier stops that moisture at the source. In Bismarck's climate, any crawl space without one is quietly doing damage, especially through the freeze-thaw cycles of spring.
Closed-cell foam provides R-6 to R-7 per inch and blocks moisture - the right choice for exterior walls, crawl spaces, and attics in cold climates. Open-cell foam is softer and less expensive, suited for interior walls where soundproofing matters more than moisture resistance.
Yes. Blown-in insulation can be injected into existing wall cavities through small holes drilled from the exterior, then patched - minimal disruption to your home. Retrofit insulation is one of the most practical upgrades for Bismarck homes built before modern energy codes.
Bismarck Insulation is a licensed and insured insulation contractor based in Bismarck, ND, serving the Bismarck-Mandan metro and 12 communities across North Dakota and South Dakota since 2024. We hold a valid North Dakota contractor license issued through the North Dakota Secretary of State and carry full liability and workers' compensation insurance on every job. Since opening, we have completed insulation projects across 16 service types - from spray foam and attic blown-in to vapor barriers and commercial retrofits. We believe a homeowner should understand exactly what is being done in their home before work starts. Learn more about our team and approach.
R-value is the measure of how well insulation resists heat flow. Bismarck sits in DOE Climate Zone 6, one of the most demanding in the country. Older homes in Bismarck were built to much lower standards and often need significant upgrades to reach the recommended levels for this climate.
If existing insulation is dry, undamaged, and free of pests, most contractors will blow new material on top. If you have a grayish pebble-like material (possible vermiculite) in an older attic, stop and have it tested before disturbing it - some vermiculite contained asbestos.
Homeowners who add qualifying insulation to an existing home may be eligible for a federal tax credit covering a portion of material costs. Keep your receipt and the manufacturer's certification. The ENERGY STAR federal tax credit page has current limits and requirements.
Not sure where to start? The best first step is a free in-home assessment - call us at (701) 299-5341 and we will schedule one within the week.
Bismarck is North Dakota's state capital, home to roughly 73,000 residents on the east bank of the Missouri River. It is a stable, owner-occupied city where many households have lived in the same home for decades - which means a lot of houses built in the 1950s through 1980s that are still running on their original insulation. Those older homes in neighborhoods near the North Dakota State Capitol and along the north side of town often have the most to gain from an insulation upgrade.
The Missouri River shapes more than just Bismarck's western boundary - the bluffs, ravines, and clay-heavy soil throughout the city create real drainage and moisture challenges for homes near the water. Homes on the flatter terrain closer to Bismarck State College on the north side and the newer subdivisions growing to the south and west face different issues - but insulation matters in all of them when temperatures drop below zero for weeks at a time. The city's largest employers, including Sanford Health and the state government, mean many residents are long-term homeowners who invest in their properties.
Bismarck Insulation works on homes all across Bismarck - from older ranch homes near downtown to newer builds in the south subdivisions. We know what Bismarck winters do to a home, we know the city's building stock, and we are locally based so we can schedule quickly. If your home has never had insulation work done, or it has been more than ten years, reach out and we will take a look. The City of Bismarck has resources on building permits and local housing programs if you need additional information while planning your project.
By appointment only, no walk-ins.
Bismarck Insulation
301 E Front Ave Ste 211
Bismarck, ND 58504
Always open, 24/7.
Call Bismarck Insulation today for a free on-site estimate - we will find where your home is losing heat and give you a written plan to fix it.
