Crawl space insulation in Fayetteville AR - warmer floors and a drier space below
Cold floors or a musty smell coming up from under the house? We insulate your crawl space in the right order so it stays dry.
Should you insulate the floor or seal the whole crawl space?
Crawl space insulation in Fayetteville either insulates the floor over the crawl space or turns a vented crawl space into a sealed, insulated and dry space. Either way, the goal is to keep cold and damp from coming up into your house.
Most people call us about cold floors in winter, a musty smell or insulation they can see sagging between the joists. C&J Fayetteville Insulation Company is based in Fayetteville, and we work in the cities around it across Northwest Arkansas, where plenty of houses sit on vented crawl spaces. The price turns on how big the space is and how easy it is to get into, whether old insulation has to come out first, and which way you go, because closing up the whole space takes more material and a plan to keep it dry. The schedule depends mostly on what has to happen before we insulate, like repairs, heating and cooling work or a permit. The estimate gives you the figure for your own house.
- Fully licensed and insured.
- Free quotes on site.
- Expect a reply within 1 business day.
Crawl space insulation up close
How we handle crawl space insulation
I start by helping you choose between insulating the floor above and closing up the whole crawl space, because the right answer depends on how wet it is down there and what equipment sits in it. Wet or fallen insulation comes out first, since new material over a wet spot just hides the problem. If we insulate the floor, we do the air sealing first, closing the gaps around pipes, wires and ducts, and then insulate between the joists. We also insulate and seal the rim joist, the band of framing that sits on the foundation wall, which usually takes rigid foam or spray foam. If we close the space, I look at any gas equipment down there and work out how the space will stay dry before a single vent gets sealed. Foam on the crawl space walls usually needs a covering such as drywall under most codes, because some foams can give off toxic or flammable gases when heated, though some products are made and tested to cut that risk.
A crawl space is rarely the only place air gets in. When pipes, wires and ducts run up into the walls and ceiling, we often close those gaps as part of our air sealing services. If a room still feels cold once the floor is done, the cause may be in the walls, and we can look at wall insulation while we're there.
Why Fayetteville homeowners call C&J for crawl space insulation
I look at every crawl space
I come out to every job myself before we quote, and our own installers do the work. You deal with the person who actually saw what's under your house.
We find the cause first
I started this business in 2023 after years of upkeep work where damp floors and high power bills kept tracing back to the crawl space. That's why we find the real cause before quoting, and I'll tell you if a job won't help.
Licensed, insured, sized right
We're fully licensed and insured. Arkansas's limited home improvement license only covers residential jobs under $50,000, labor and material counted together, so the license a contractor holds should match the size of your job.
Under a house, the order of the work matters most, so the space is dry and safe before anything gets closed up. Call (479) 485-4960 or send us a request, and I'll come take a look.
Get a free estimate for your crawl space
Send the form and we'll get back to you within one business day to set a time. I'll come out, look at your crawl space with you and give you a free estimate, with no obligation.
- Fully licensed and insured.
- Free quotes on site.
- Expect a reply within 1 business day.
What happens when you call about your crawl space
Call or send a request
Call (479) 485-4960 or use the form, and we'll set a time that works for you. It helps to know roughly how big the crawl space is, whether it has vents and what equipment sits down there.
I look at it with you
I go through the crawl space with you, checking for wet spots, old insulation, gas equipment and where air gets in. The estimate tells you which approach I'd pick, what it costs and what has to happen first, so you know the price before anything starts.
We fix what comes first
If you go ahead, our installers take care of the prep and repairs before any insulation goes in, like pulling out soaked material. Then we do the insulating.
We walk you through it
Before we leave, we clean up and show you what we did. You'll know what's under your floor and why it was done that way.
Crawl space insulation questions
What causes a vented crawl space to stay damp?
In a humid climate, a vented crawl space tends to get wetter over time, not drier. That dampness feeds mold and rot in the floor framing. It's the main reason to weigh sealing the space against keeping the vents open.
Is it safe to just close up my crawl space vents?
No, closing the vents by themselves can make the space damper. It can also turn deadly when a gas furnace or water heater that vents on its own draft sits down there. That's why I check that equipment first, and the plan covers the whole space, not just the vent openings.
How do I keep a sealed crawl space dry?
A closed crawl space always needs a way to dry out, and one of the most effective is feeding it a small amount of conditioned air from your heating and cooling system. Plan on some heating and cooling work alongside the insulation. We'll work out that plan with you before anything gets closed up.
How much does crawl space insulation cost in Fayetteville?
Insulating a crawl space in Fayetteville usually costs about $1,300 to $5,900 per job. Size, what has to come out first and whether you seal the whole space move it most. Our work is backed by our satisfaction guarantee, and the estimate at your house gives you the price for yours.
Is sealing a crawl space worth it?
It often is, because research on sealed crawl spaces found they used less heating and cooling energy and kept the space under the house noticeably drier. For some houses, insulating the floor is enough. If that's yours, I'll tell you.
Do I need a permit to insulate a crawl space in Fayetteville?
Ask the city before work starts, because its list of work that doesn't need a permit names things like painting and flooring, not insulation. For a clear answer, the city asks you to call building safety at 479-575-8238 and ask an inspector, and it makes field inspections on alterations and repairs. I check with them before every job, and when a permit is called for we take care of the paperwork and the inspections.
Work that goes with crawl space insulation
Wall insulation
If a room stays cold with a well-insulated floor, the heat is probably leaving through the walls.
Air sealing services
Insulation works best once the drafts are stopped, so closing the gaps around the house pays off alongside it.