Open-cell foam insulation in Evansville IN - quieter rooms and fewer drafts
Drafty rooms, a hot upstairs or noise coming through the walls? One sprayed layer of foam stops the air and quiets the house.

Is open-cell spray foam right for your house?
Open-cell foam insulation in Evansville is a soft spray foam we apply to rooflines, walls and the spaces over garages, where one layer both insulates and stops the air leaks that make a house drafty. It's the lower-cost, quieter of the two spray foams, so it suits owners who want comfort and less noise without paying for the densest foam.
Usually it's a room over the garage that won't stay warm, an upstairs that's always too hot, or an older house where somebody kept piling insulation on and never sealed a gap. If your ductwork runs through the attic, foam on the roofline makes sense because it pulls those ducts inside the sealed part of the house, and if it doesn't, sealing the gaps and topping up blown-in insulation usually does the job for less. The price moves with how much area we spray and how deep, how hard the space is to reach, and whether old insulation or a roof leak has to be dealt with first, and the schedule turns on those same repairs plus the time you'll spend out of the house. I'll give you your own number once I've seen the space in person. We're based in Evansville and work across the area, including Henderson, KY, Mount Vernon, Boonville, Princeton and other cities nearby.
How we install open-cell foam insulation
I look at the space first, because foam sprayed over a wet spot or a pile of old batts just seals the problem in. Open-cell is the cheaper foam and the quieter one, and it stops air while letting moisture through, so if it's going under a roof, we check that roof for leaks before we spray. Foam is good at a lot of things, but it doesn't fix a roof. Once the leaks are fixed and the space is clear, our crew covers what needs protecting, sprays the foam to the depth we agreed on, trims it back where it swells past the framing, and cleans up so the only new thing in your attic is the foam.
Since open-cell lets vapor pass, we'd rather put a crawl space vapor barrier down on the dirt before insulating the floor above it, because insulation over a wet crawl space just hides the problem. If you own a shop, office or other building that's drafty or loud, we spray the same foam there as part of our commercial insulation work.
Why Evansville homeowners call A&B Evansville Insulation Services for foam
I write your estimate myself
I come out to look at the space and write the estimate on site, and our own crew does the work, with me on most jobs. So the person who told you what the job needs is usually standing in the attic when the foam goes on.
We tell you what's really there
I started this business in 2023 after some years away from the trade, and coming back I noticed how often the leaks get skipped and the insulation just gets piled on top. If your roof or wiring needs fixing first, I'll tell you that instead of selling you foam that won't help.
Licensed and insured for Evansville work
Evansville's licensing rules make contractors pass a written exam and an experience check and show proof of insurance. We're fully licensed and insured, which matters when someone is spraying foam inside your house.
On a foam job, the order of the work matters more than the foam itself. Call (812) 205-2872 or send us a request and I'll come out and take a look. Every job is backed by our satisfaction guarantee.
Get a free on-site estimate for open-cell foam
Send the form and we'll reply within one business day to set a time for me to come out, look at the space and write your estimate on site, with no pressure to book. It helps to know which area you want sprayed and whether the roof over it has ever leaked.
What sprayed open-cell foam looks like
Questions before you book open-cell foam
How much does open-cell spray foam insulation cost in Evansville?
Open-cell spray foam in Evansville usually costs about $0.60 to $0.90 per board foot, a board foot being one square foot sprayed an inch deep, and that's the going rate in the area rather than our quote. Your total comes down to how much area gets sprayed and how deep, so I'll measure it when I come out and write you a real number.
Is open-cell or closed-cell spray foam better for my house?
Open-cell costs less and does a much better job of quieting a room, while closed-cell insulates more per inch, so open-cell is the pick when budget and noise matter more than getting the most out of every inch. It runs about R-3.6 per inch, R-value being how well insulation slows heat, so the depth we spray shapes how well it works. It stops air leaks but lets water vapor through, so where moisture has to be blocked, closed-cell foam is the better fit.
How long do we have to stay out of the house after open-cell spray foam?
EPA guidance says everyone, kids and pets included, should be out of the house while the foam is sprayed, and some foam makers advise waiting 24 hours before moving back in, though it varies by product. Plan on staying somewhere else, and we'll tell you how long the maker of the foam we're using says to wait before you come back in.
Do I need a building permit for spray foam insulation in Evansville?
Evansville requires a building permit before starting any interior or exterior alteration to a structure, and the city's building permit page lists work like HVAC, drywall and re-roofing but doesn't name insulation. Each city and county has its own building office, so we ask the one that covers your address before work starts, and when the job calls for a permit, we handle it. If you'd rather do the work yourself, the city can issue a permit to you or your immediate family for the house you live in without the license a contractor needs.
What is the best way to use open-cell foam in an attic?
When foam goes on the underside of the roof to seal the attic in with the rest of the house, that attic needs a planned way to remove moisture, so ask how the design handles it before anyone sprays. That matters more with open-cell because vapor can pass through it, and I'll walk you through how we'd handle it in your attic at the estimate.
Does open-cell spray foam have to be covered with drywall or a coating?
Sometimes. Not every spray foam needs a thermal or ignition barrier, a protective cover such as a coating or drywall, and whether yours does depends on the foam itself or the code. It's worth asking before the job starts, and I'll tell you what the product we're using calls for.
Work that often goes with spray foam
- Crawl space vapor barrier
If the space under your floors smells damp, a barrier over the crawl space dirt keeps that moisture out of the house before any insulation goes in.
- Commercial insulation
For a drafty shop, office or rental building you own, we seal and insulate the walls and roof so the place holds heat and keeps the noise in.




