Spray foam insulation in Bismarck ND - fewer drafts and rooms that hold their heat
Drafty rooms and a power bill that climbs each winter? Spray foam seals the gaps and insulates in one pass, so the heat stays in.
- Licensed and fully insured.
- Free in-person estimates.
- We respond within 1 business day.
What does spray foam insulation do for a Bismarck house?
Spray foam insulation is a plastic foam we spray onto walls, rooflines and rim joists, where it expands into the cracks other insulation misses. In a Bismarck house, that means it stops outside air from leaking in and insulates in the same pass, which is why people turn to it for cold rooms and drafty spots.
Most people call me because the room over the garage is freezing, a bedroom never warms up or the heating bill keeps climbing, and they've heard foam fixes that. Sometimes it does, and sometimes sealing a few gaps does the job for less, so I start by looking. The price moves with how much area you're covering, which foam we use, how deep it goes, how hard the space is to reach and whether anything old or damaged has to come out first. The schedule depends on whether the city wants a permit, the weather and when your household can be out of the house for the spraying. My written estimate lays out what we'd do and why, so you see the number for your own house before you decide anything.
Is spray foam insulation right for your house?
Rooms over the garage
Floors over a cold garage leak heat through gaps that foam fills and seals in one pass.
Drafty rim joists
The band of framing on top of your basement wall leaks air, and foam fits it well.
Bonus rooms under the roof
Finished rooms tucked under the roofline leak at the edges, where foam fills the awkward gaps batts leave.
Tight spots and shallow walls
Cathedral ceilings and shallow walls leave little room, and dense closed-cell foam packs the most insulation per inch.
How we install spray foam insulation
Before anything gets sprayed, I go through the space with you and show you what I see, because foam over a wet sill or an old mouse nest just hides the problem. The big choice is open-cell or closed-cell, so I lay out what each one does for the space you've got. Then we plan with you for everyone, pets included, to be out of the house while we spray and for a while after. On the day, we fix what needs fixing first, mask off anything that shouldn't get foam, seal the gaps around pipes, wires and the attic hatch, and spray to the depth we agreed on. Before we pack up, I walk you through the finished work so you can see each spot we covered.
Spray foam is one tool, and plenty of houses need a mix. We also do attic insulation and blown-in insulation, which is loose fill blown through a hose. If your attic floor is the weak spot, I'll price that alongside the foam so you can compare.
Open-cell foam
This is the lighter, less expensive foam, and it stops air well. It insulates less per inch, so it suits walls and rooflines where there's room to build up depth.
Closed-cell foam
This is the dense, harder foam that insulates more per inch and costs more. I reach for it in tight spots like rim joists and shallow cavities, where you can't fit much depth.
What happens after you call us about spray foam?
Call or send the form
Call (701) 299-5007 or use the form, and we'll set up a time for me to come out. It helps to know which spaces you're thinking about and roughly how big they are.
Walk the space with me
I look over the space with you, take photos and explain what I found, what should be fixed first and what can wait. You then get a written estimate that says what we'd do, which foam we'd use and why, so you can judge whether it's worth it.
Wait on the permit
If the city requires a permit for your job, we don't start until it's issued. Review times vary, so permitted work needs some room in the schedule.
Spray, then walk through
Your household and pets stay out of the house while we work, and we handle problems first and seal before we insulate. When we're done, I walk you through the finished job before we pack up.
Spray foam or sealing plus loose fill?
Usually sealing and loose fill, unless the ducts are up there.
Foam costs more, and what you're paying for is that it seals air and insulates at the same time. In an open attic, we can get most of that by sealing the gaps around lights, pipes and the hatch, then topping up the loose fill, for a lot less money.
The exception is when your furnace ducts run through the attic. Foaming the underside of the roof keeps those ducts in warm air instead of cold, and that's where I'll recommend foam. If the insulation you have is already doing its job, I'll tell you that too.
Insulation work, start to finish
Look through these examples of insulation work, from attic floors to rim joists, to get a feel for what each kind of job looks like.
Get a free spray foam estimate for your house
Tell us which spaces you'd like insulated and roughly how big they are, and we'll respond within one business day to set up a time. I come out myself, the estimate is free, and there's no pressure to book.
Why Bismarck homeowners call Pinnacle Bismarck Spray Foam Insulation for spray foam
I show you before we spray
I take photos and walk you through what's going on in your house before anyone touches it. If your insulation is fine, I'd rather tell you that than sell you more.
The owner on your job
I do every estimate myself, and I'm on the jobs alongside our installers. The person who told you what we'd do is the one making sure it gets done.
Licensed and fully insured
We're licensed and fully insured. That matters when there's a crew and spray equipment working inside your house.
Started in Bismarck in 2023
I started this business here in 2023 and learned the hands-on side one attic and crawl space at a time. Call (701) 299-5007 or send the form, and I'll come take a look at yours.
Spray foam questions we hear in Bismarck
How much does spray foam insulation cost in Bismarck?
Spray foam for a 1,000 square foot area, sprayed 3 inches deep, usually runs about $1,800 to $4,500 per job in Bismarck. Closed-cell foam costs more than open-cell, and a hard-to-reach space or old material that has to come out adds to the total. My estimate is free and spells out what we'd do and why.
Should I use open-cell or closed-cell spray foam in a North Dakota house?
Open-cell stops air but lets water vapor through, while closed-cell sprayed more than two inches deep also acts as a vapor retarder, so the right choice depends on how your wall or roofline handles moisture. In a northern climate like ours, a vapor retarder on the warm side of the insulation keeps moisture from working into it and cutting how well it works. That guidance is general, so I settle it for your space at the estimate.
How long do we have to stay out of the house after spray foam is installed?
Plan on everyone being out for at least 24 hours. The re-entry time, meaning when it's safe to come back, can run longer depending on the product, the kind of house and whether young kids or older family members live there. Line up a place to stay, and we'll go over the timing for your product before the job.
Is spray foam safe for someone with asthma?
Anyone with asthma, respiratory allergies or a history of skin problems should read the product information carefully first, and some people choose a different insulation instead. Foam is also flammable and gives off toxic smoke when it burns, so we talk through any spot where it will stay exposed before we spray.
Does a spray foam contractor need a license in North Dakota?
Yes, once a job's cost goes over $4,000, North Dakota requires a licensed contractor to do it. The Secretary of State's contractor page explains the rule, so on a bigger job it's fair to ask any installer, us included, to show you their license.
How do I get spray foam installed during a Bismarck winter?
Winter jobs are planned around the foam, because how it goes on depends on air and surface temperature, humidity and moisture on the surfaces. That can mean warming the space or moving the date. It's also fair to ask which seasonal blend of the product suits the time of year.
Want to know what your house needs?
I'll come look the space over with you and send a written estimate that says what we'd do and why.
Other ways to warm up your house
Spray foam insulation in Bismarck and nearby cities
In Bismarck, the city's Building Inspections Department issues permits for work in the city and the area just outside it that the city oversees, and the city doesn't allow construction to start without one. Whether a spray foam job needs a permit isn't something I'll guess at. Before work starts, we check with that office, and when your job calls for a permit, we handle the application and wait for it to be issued.
Most of the calls we get here are about cold rooms over garages, drafty basements and upstairs bedrooms that never warm up, and we see the same kinds of houses on jobs in Mandan and across Bismarck. We work in other cities around Bismarck too, so if you're nearby, give us a call.