Crawl space insulation in Topeka KS - warmer floors and a dry crawl space
Cold floors over the crawl space and a winter power bill that stings? We insulate it in the right order so the floors stay warmer.
Get your crawl space looked at
Have a rough idea of the crawl space size, whether the vents are open and whether a furnace or water heater sits down there, then call (785) 246-7785 or use the form.
What does insulating a crawl space in Topeka involve?
Crawl space insulation in Topeka goes in one of two places, on the outer walls of a sealed crawl space or under the floor of a vented one, and either way it's what keeps the floors above from feeling like a garage in January.
Most people call us at Efficient Topeka Insulation Company because the floors are cold, a room over the crawl space never warms up, or the old batts down there are hanging like laundry. The price moves with the size of the space, how easy it is to get into, which of the two ways you go and whether anything has to come out first, like old batts we pull out before starting. The schedule mostly turns on that last part, because anything that has to be fixed gets fixed before insulation goes in. When I come out, I walk the space with you and tell you what I'd do and in what order, so you know where your job lands before anyone crawls under the house.
Why Topeka homeowners call us for crawl space work
I look at every crawl space
I come out to look at each job myself, and I'm on site for most of the install our crew does. The person who made the plan is the one making sure it gets followed.
Learned the trade from my dad
I crawled through attics with my dad long before I started this business in Topeka in 2020. He taught me the order matters, so we seal first and insulate after.
We're licensed and insured
We're licensed and insured. A crawl space is tight, dirty work around your pipes, wiring and ductwork, and you shouldn't have to wonder who's covered if something goes sideways down there.
Under a house, getting the order right matters more than how full it looks. Send us a note or call (785) 246-7785 and I'll come take a look.
How we handle crawl space insulation
I start by crawling the space and laying out the two ways to go, insulating the walls of a sealed crawl space or insulating under the floor, and what each one takes for your house. If we find mold or a gas appliance down there, that gets dealt with before any insulation goes in, because covering a problem doesn't fix it. On the sealed route, a plastic sheet goes over the dirt and up the walls to slow ground moisture, rigid foam board goes on the outer walls, and the space gets a way to dry out, and one that works well is a small flow of air from your heating and cooling system so the crawl space is treated like part of the house. On the under-floor route, we seal the gaps around pipes and wires first and then fit the insulation tight to the floor, since batts that sag away from it don't do much. My dad used to say insulation over a leak is just a nicer looking leak, and crawl spaces prove him right more often than attics do.
Crawl space work usually connects to the rest of the house. The gaps where pipes and wires run up through the floors and walls let air move all through the house, so air sealing often comes next, and if a room still feels cold once the floor is warm, wall insulation is the next place I'd look. Sealing a crawl space is also a good time to check where your bathroom and kitchen fans send their air, since Topeka's code says that air can't be dumped into a crawl space, an attic or anywhere else inside the house. We do this same work in Lawrence, Tonganoxie, Eudora and other cities around Topeka.
Sealed crawl space, insulated walls
This suits a house with ductwork, a furnace or water lines down there, because it brings the crawl space inside the house and keeps it dry. It takes more steps and costs more, and it's the one I usually lean toward.
Insulation under the floor
This suits a crawl space that stays vented with nothing down there that minds the cold, since it's the simpler job and costs less. The catch is that any pipes and ducts end up on the cold side.
How do you know your crawl space needs insulation?
Cold floors all winter
Floors over the crawl space feel like tile even when they're carpet. That usually means thin or missing insulation below, and until it's fixed the furnace keeps running longer to make up for it.
Batts hanging or fallen
Old insulation sagging from the joists or lying on the dirt is usually wet, chewed or just tired. Every winter it stays that way, you're paying to heat the ground under your house.
A musty smell inside
A damp, earthy smell in the house usually means a wet crawl space, because air from down there rises into the rooms above. Left alone, the wood stays damp and mold gets a head start.
Pipes freezing under the house
Frozen lines in a cold snap usually point to a crawl space that's nearly as cold as outside. One burst pipe can cost more than fixing what let it freeze.
What happens after you call about your crawl space?
Call and set a visit
You call (785) 246-7785 or send the form, and we get back to you to set a time. I come out myself, look over the crawl space and tell you what I'd do and in what order.
Fix first, then insulate
Anything that has to be handled first, like mold or a gas appliance, gets dealt with before insulation goes in. Then our crew does the install, and I'm on site for most of it.
Clean up and walk it
We haul out the scraps and old material and clean up after ourselves. Then we walk the job with you, so you know what's down there before the access gets closed.
Crawl space questions we hear
These are the questions Topeka homeowners ask most before anyone goes under the house. If yours isn't here, call and ask, since every crawl space is a little different.
How much does crawl space insulation cost in Topeka?
Insulating a crawl space in Topeka usually costs about $1,400 to $6,400 per job. The biggest swing is whether you insulate under the floor or seal the space and insulate the walls, followed by the size of the space and anything that has to be fixed first. I'll give you your own number once I've seen it.
What is the best way to insulate a crawl space, walls or floor?
Sealing the crawl space and insulating its outer walls usually works better than insulating under the floor of a vented one, with fewer pests, less moisture, lower energy use and more comfort. You also get warmer floors and more even temperatures through the house. Under the floor still makes sense when a space has to stay vented, and I'll tell you which one fits your house.
How do I turn a vented crawl space into a sealed one?
It takes more than closing the vents. Shutting them alone can trap moisture, and if a furnace or water heater down there burns gas and relies on that outside air, closing them can be deadly. So we look at the whole space, the dirt floor, the walls, a way for it to dry out and any gas appliances, before a vent gets closed.
What happens if there's mold in my crawl space?
A certified mold remediation expert inspects it and sets a cleaning plan before any insulation goes in, which is what federal guidance calls for. Older crawl spaces can also have asbestos wrap on pipes or ductwork, and if it turns up, a certified asbestos abatement firm looks at it and decides the treatment. Plan a little extra time for either, and then we pick up from there.
Do I need to insulate under the floor if the crawl space walls are insulated?
No, not when the crawl space is closed and rigid foam board covers the walls, since the wall foam does the insulating. That saves you from paying to insulate the same space twice.
Does foam insulation in a crawl space need to be covered?
Usually, yes, since most codes call for a fire barrier, typically drywall, over foam insulation. Some foam products are made and tested to cut those risks, so it's worth checking with local building officials that the foam going in meets the code. I'll tell you which product I'd use and why.
Get a free crawl space estimate
Tell us the rough size of your crawl space and anything you've seen down there, and we'll get back to you within one business day. I'll come out for a free on-site estimate, no obligation.
Crawl space work, up close
Other work that pairs with this
Wall insulation
If the outside walls still feel cold to the touch, insulating them finishes what the warmer floor started.
Learn moreAir sealing services
Closing the small gaps around pipes, wires and fixtures stops the drafts that insulation by itself can't.
Learn more