Closed-cell foam insulation in Burnsville MN - air sealed and insulated in one layer
Cold floors and drafts where the house meets the foundation? We spray dense foam that stops the air and slows the heat in one layer.
Is closed-cell spray foam right for my basement or walls?
Closed-cell foam insulation is a dense spray foam that insulates, seals air leaks and, at the usual thickness, holds back moisture vapor, all in one layer. In Burnsville we mostly spray it on rim joists, the wood band where your house sits on the foundation, and on basement foundation walls.
Most calls about it start with cold floors over the basement, drafts along the basement ceiling or a basement someone's about to finish. The price moves with how much area we're covering, how thick the foam has to be, how easy the space is to reach and whether anything needs fixing first. The schedule turns on that same prep, plus the time your family spends out of the house while the foam cures. I'll give you a figure for your own space once I've looked at it in person.
How we install closed-cell foam insulation
On every job I first look for anything that has to be fixed before foam goes on, like a damp wall or a crack letting water in, because foam over a wet spot just hides it. Closed-cell foam is what we reach for on rim joists and foundation walls, and our crew sprays it straight onto the wood or concrete so it seals the air leaks and insulates in the same pass. Frame walls take more thought. Closed-cell foam holds back moisture vapor, so a wall filled with it won't dry well to the outside, and there's a minimum thickness that keeps condensation from forming inside it. That's why we talk through how your wall will dry and how thick the foam needs to be before we spray it. We also help you plan your time out of the house, since everyone stays away while it cures.
Closed-cell isn't always the pick. In an attic, sealing the gaps and topping up the loose fill usually does more for your money unless the ductwork runs up there, and I'll tell you that at the estimate. Where a thicker, lighter foam makes more sense, we'll talk through open-cell foam insulation instead. If you run a small shop or office building, the same foam work is part of our commercial insulation service.
Closed-cell foam insulation rules in Burnsville
The City of Burnsville says permits must be obtained before every residential project, and its list names basement remodeling, not closed-cell foam insulation. So before work starts, I check with the city on your job and take care of the permit when it calls for one. If an inspection is part of it, we set it up and meet the inspector.
Minnesota's rules decide how foam goes on the inside of a foundation wall, and that shapes how a finished basement gets built. The foam has to be sprayed straight onto the wall, any stud wall stands off with a gap in front of it, and wires, pipes and the fasteners for that framing stay out of the foam. Where something has to pass through, that spot gets sealed. If you're finishing the basement, we spray before the framing goes up so the gap is easy to keep. We see the same kinds of poured and block basement walls on jobs in Savage and Lakeville, and the work goes the same way there.
How a closed-cell foam job goes
Call or send us a message
Call (952) 234-9016 or use the form, and tell us where you're thinking about foam, whether that's the rim joists, a foundation wall or a frame wall. We'll set a time for me to come out.
I check the space first
I look at the rim joists and walls, check for leaks, damp spots or old insulation that has to be dealt with first, and measure what needs covering. You get a price for your own space, the thickness we'd spray and anything that has to happen before we start.
We spray and walk it
Our install crew sprays the foam the way we planned it while you're out of the house, and you come back once it has cured and the house has aired out. I walk the finished job with you before we leave.
Get a closed-cell foam estimate for your rim joists or walls
We reply within 1 business day to set up a visit. I come out, look at the space, check for anything that has to be handled first and leave you a price. The estimate is free and done on site, with no pressure to book.
Questions before you book closed-cell foam
What is the best place to start insulating a basement in Minnesota?
Minnesota's guidance says to start with the rim joist, because it's the simplest and least expensive part of a basement to insulate and brings the highest return for the money. That's where closed-cell foam does its best work, since it seals the air leaks and insulates in one step.
How much does closed-cell spray foam insulation cost in Burnsville?
Spray foam insulation in Minneapolis usually costs about $2 to $6 per square foot of area covered, and that's the going range around here, not our quote. Where your job lands depends on the thickness, the access and any prep, and I'll give you a price for your space after I've seen it.
How long do you have to stay out of the house after spray foam insulation?
You stay out until the foam has cured and the house has been aired out and cleaned, and some foam makers recommend 24 hours, though the time varies by product. I'll give you the recommended time for the product we're using before we start, so you can line up somewhere for everyone, pets included, to stay.
Which foam seals air in a thinner layer, closed-cell or open-cell?
Closed-cell foam does, because it needs a finished thickness of at least 1.5 inches to count as an air barrier, while open-cell foam needs at least 5.5 inches. That matters in tight spots like rim joist bays, where there isn't room for a thick layer.
Is spray foam insulation safe for someone with asthma?
Anyone in your home with asthma, respiratory allergies, a history of skin conditions or a past reaction to isocyanates, a chemical used to make spray foam, should read the product information carefully before you decide, and may want to consider another kind of insulation. Tell me about it at the estimate and we'll go over the product together.
How well does closed-cell foam insulate per inch?
Typical closed-cell foam rates about R-6 per inch, and R-value is just how well insulation slows heat, so you get a lot out of a thin layer. It also cures rigid and hard to compress, unlike soft batts.
Why Burnsville homeowners call Thermal Burnsville Insulation Company for closed-cell foam
The owner sees every job
I come out to look at every space and put the estimate together myself, and our install crew does the spraying. You get a price from the person who actually saw your rim joists and walls, not a guess over the phone.
Learned the trade in attics
I learned insulation next to my dad in attics and crawl spaces, and I've run this business since 2021. That taught me to do the steps in order and to tell you when a roof leak or another trade has to come first.
Licensed and fully insured, every job
We're licensed and fully insured. The state licensing board requires a license for residential contractors and remodelers who contract with homeowners on work that takes more than one special skill, so it's fair to ask any crew you're comparing.
If you're weighing foam for your basement or walls, call (952) 234-9016 or send us a message and I'll come take a look.
Related insulation work
Open-cell foam insulation
A softer, thicker foam that can suit spots where closed-cell isn't the right fit.
Commercial insulation
Foam and other insulation for small commercial buildings, planned around your hours and your tenants.
Book your closed-cell foam estimate
Call (952) 234-9016 or use the form with the areas you want insulated and any health concerns at home, so I have what I need on the first visit.
