About our insulation contractor company in Bismarck
We're an insulation contractor in Bismarck that starts every job by explaining what's going on in your house, then tells you plainly what would help and why.
- Licensed and fully insured.
- Free in-person estimates.
- We respond within 1 business day.
Why I started insulating Bismarck houses
I didn't come to insulation through a trade school. I got curious about why some houses stay warm and others leak heat like a screen door, so I read everything I could find, then learned the hands-on side one attic and crawl space at a time. I started this business here in Bismarck in 2023. Most of our calls still come from people with a cold room, a drafty upstairs or a heating bill that keeps climbing, plus some business owners with the same trouble in a shop or office.
What I care about most is that you understand your own house. If you know why we'd do something, you can judge whether it's worth it, and nobody can talk you into work you don't need. That's why every visit starts with a look and an explanation instead of a sales pitch. You can see the full list of what we do on our home page.
We look before we recommend anything. You'll know the reason behind every step.
How we run your insulation job
I do every estimate myself and work in your house alongside our installers. Before we start, we check with the city's building inspection office on whether the job needs a permit, and when it does, we apply and wait until it's issued. North Dakota also requires a state contractor license on jobs over $4,000, and we're licensed and fully insured. We clean up before we leave.
At the estimate, I look the space over with you and answer your questions as we go, then send a written estimate that says what we'd do and why. If we find something unexpected once work starts, I'll show you before we go on. And if something needs a second look or a different trade, I'll tell you plainly.
What you can expect from our insulation crew
Most people call us about a cold room or a high heating bill. Here's what you can count on from the first look in your attic to the finished job.
You see it first
We show you what's in your attic, walls or crawl space and explain it in plain words before you decide.
A straight answer
If your insulation is fine, or another problem should come first, we'll tell you instead of selling a job.
Air sealing first
We close the gaps around lights, pipes and the attic hatch before adding insulation, so your money does real work.
Safety talked through early
We talk through old insulation, gas appliances and time away for foam at the estimate, not on job day.
Where we do insulation work
Pinnacle Bismarck Spray Foam Insulation is based in Bismarck, ND, and we work in Mandan and other cities around it. Bismarck and Mandan are the two areas with their own page below, and if your city isn't listed, call us at (701) 299-5007 and ask.
Let's take a look at your attic
Contact us for a free in-person estimate with no pressure to book, and we'll get back to you within one business day.

