Insulation contractor in Mandan, ND - warmer rooms and fewer winter drafts
Pinnacle Bismarck Spray Foam Insulation is an insulation contractor based in Bismarck, ND. In Mandan, we insulate and air seal attics, walls, basements and crawl spaces, after showing you where your heat is going.
- Licensed and fully insured.
- Free in-person estimates.
- We respond within 1 business day.
Insulation for Mandan houses, old and new
We're based in Bismarck, and Mandan is one of the cities around it where we insulate houses and some businesses. The calls from Mandan sound like the ones we get at home: a back bedroom that won't warm up, a room over the garage that's freezing by January, a power bill that keeps climbing. I do the estimates myself and work alongside our installers, so the person who crawls through your attic is the same one who explains it to you. What moves the price is how much space we're covering, whether old material has to come out first and which material fits, and the schedule turns mostly on how easy the space is to reach and whether the city wants a permit.
The houses here run from older homes with a few inches of settled fill and walls with little inside them to newer builds where the insulation is in place but the gaps around it never got sealed. That difference decides most jobs, because an older house usually needs material added while a newer one more often needs its leaks closed.
What we do for Mandan homes
Spray foam insulation
Spray foam suits rooms over garages and odd-shaped spaces in Mandan houses, since it seals air and insulates in one pass.
Learn more about Spray foam insulationAttic insulation
Many Mandan attics have a few inches of old fill, thinnest at the eaves. We build it up evenly and keep the vents clear.
Learn more about Attic insulationBlown-in insulation
Blown-in fill, loose material sent through a hose, is how we top up most older Mandan attics without tearing anything out.
Learn more about Blown-in insulationHome insulation
When a Mandan house has cold rooms and a high power bill, I walk the whole house first to find where the heat leaks.
Learn more about Home insulationInsulation removal
In older Mandan attics, fill that got wet or holds mouse droppings comes out first, because new material on top just hides it.
Learn more about Insulation removalCrawl space insulation
Cold floors in Mandan homes often start in the crawl space below, so we check how air gets in before deciding what to insulate.
Learn more about Crawl space insulationWall insulation
Older Mandan houses often have walls with little inside, which we can fill through small holes instead of tearing out drywall.
Learn more about Wall insulationAir sealing services
Most drafts in Mandan homes come through gaps around pipes, wires and the attic hatch, and closing them is often the cheapest fix.
Learn more about Air sealing servicesBasement insulation
Finished or not, a Mandan basement loses heat through bare concrete walls and the wood band at the top, and that's where we start.
Learn more about Basement insulationClosed-cell foam insulation
Closed-cell foam, a dense foam that also blocks moisture, is what we reach for on damp Mandan basement and crawl space walls.
Learn more about Closed-cell foam insulationOpen-cell foam insulation
Open-cell foam is softer and costs less than closed-cell, which makes it a good fit for dry stud walls and rooflines in Mandan homes.
Learn more about Open-cell foam insulationCommercial insulation
Shops, offices and metal buildings in Mandan lose heat through roofs and walls, and I'll walk the building with you before we quote it.
Learn more about Commercial insulationCrawl space vapor barrier
Bare dirt in a Mandan crawl space feeds moisture into the floor framing, so we cover and seal it with a heavy plastic sheet.
Learn more about Crawl space vapor barrierVapor barrier installation
On Mandan basement walls and other spots where warm air meets cold surfaces, the right vapor barrier keeps moisture out of the framing.
Learn more about Vapor barrier installationAttic air sealing
Frost on attic nails in a Mandan winter usually means warm air is leaking from below, so we find those leaks and seal them first.
Learn more about Attic air sealingRetrofit insulation
Plenty of Mandan houses were built when insulation was an afterthought, and we add it to lived-in rooms with as little mess as possible.
Learn more about Retrofit insulation
What Mandan winters ask of your house
Long winters here put the attic to work, and the trouble we find up there is usually less about how much insulation there is and more about where warm air slips through it. Gaps around can lights, pipes and the attic hatch let heat rise right past the fill, so I measure the inches already up there and look hard at the eaves, where coverage tends to run thin and vents get buried. We fix those spots before adding anything, because new insulation over a leak just keeps the leak.
Under the house, the frost depth here is 4 feet, so basement walls and crawl spaces sit against frozen ground for much of the winter. That's usually where cold floors start, and we deal with it by sealing where outside air gets in, covering bare dirt in crawl spaces and using closed-cell foam on walls that stay damp.
Get a free on-site insulation estimate in Mandan
Tell us which room is cold or what the power bill is doing, and we'll reply within one business day. I'll look the space over with you and send a free written estimate, with no pressure to book.
Questions we hear in Mandan
Do I need a permit to insulate my attic in Mandan, ND?
You might, and the city's Building Inspection office makes that call, so we check with them before a Mandan job starts. The city requires permits for structural changes and for residential construction over $2,000, and attic insulation is one of the inspections it lists. Its examples of work that needs no permit, like painting and carpeting, don't include insulation, and when a permit is needed, we handle the application and wait for it to be issued before we begin.
When does an insulation contractor need a North Dakota license?
A contractor needs a North Dakota contractor license whenever the cost, value or price of the job is over $4,000, and that holds for work in Mandan too. We're licensed and fully insured, and it's fair to ask any contractor to show you their license before you sign.
How much does insulation cost in Mandan, ND?
There's no single price, because it comes down to how much area we're covering and what's already there, and I put your number in a written estimate after looking the space over. Old insulation that's wet or full of droppings has to come out first, which adds work, and spray foam costs more than blown-in fill because it seals air as it insulates. In most attics, sealing the gaps and topping up loose fill is the better buy, unless your ductwork runs up there, and then foam usually earns its cost.
Does new wiring need an inspection before insulation goes in my Mandan house?
Yes, the North Dakota State Electrical Board requires electrical contractors and homeowners doing their own wiring to notify it for inspection, including before the work gets covered up. That also takes in repair work over $500 and service entrance work, so wiring in a wall or attic we're about to insulate should be inspected before we close it in. If I spot something that needs an electrician, I'll tell you, since that's a different trade.
How do I find out which building code applies to insulation work in Mandan?
Call the city's inspection office at 701-667-3230, because they can tell you which edition is in force for your job. Mandan follows the State Building Code, and the city's design page still lists the 2021 editions, including the International Residential Code, while the state's 2024 updates took effect Jan. 1, 2026. We go by what the city says applies to your house.
How do I check if my Mandan house is in the flood project's inundation area?
The city's flood risk reduction project page has an interactive map that shows whether your property falls inside the inundation area or outside it. It's worth a look before we insulate a basement or crawl space, because I'd want to know that before recommending materials for walls below ground.
Want to know what your house needs?
I come out, walk through the space with you, then send a written estimate explaining what we'd do and why.
Other areas we serve
We work in other cities around Bismarck as well, so if yours has no page, call (701) 299-5007 or send us a message through the form.