Crawl space vapor barrier in Evansville IN - a covered floor and a drier crawl space
Musty smell, damp dirt or cold floors above? We deal with the water first, then lay a liner that covers the whole crawl space.
Do I need a vapor barrier in my crawl space?
A crawl space vapor barrier in Evansville is a sheet of heavy plastic laid over the whole dirt floor and run up the walls and piers, so ground moisture and soil gases stay in the dirt instead of rising into your house.
Most people call because the floors are cold, the house smells musty in summer, or someone looked under there and saw wet dirt and sagging insulation. The price mostly turns on how big the crawl space is, how much has to come out before anything goes down, whether there's water to track down, and whether you want a plain liner or a fully sealed space with a dehumidifier. The schedule turns on the water, because nothing goes down until the floor is dry, and on whether the building office wants a permit, which we ask about before we start. I come out, crawl in, measure and write the estimate on site, so your number is for your crawl space and not somebody's average. If old insulation has fallen off the joists and is lying in the mud, insulation removal usually comes first.
How we put in a crawl space vapor barrier
Nothing goes down until any standing water is dealt with, because plastic over a puddle just hides the puddle. Then we clear the space, hauling out stored boxes, old lumber and any insulation that has dropped into the dirt, so the liner can lie on bare ground. We roll the liner over the whole floor, carry it up the walls and around the piers, overlap and tape the seams, and fasten the edges so they stay put when someone crawls through later. The vents come last, on purpose. Closing them is a bigger decision than it looks, so I go over the options with you instead of stuffing foam blocks in them on the way out.
A crawl space liner handles the ground under your house. If damp is getting in through a basement wall or another spot, we also do vapor barrier installation for those areas. And because warm air leaking out the top of the house pulls air up from underneath, attic air sealing is often worth doing alongside it, since it closes those gaps before anyone adds insulation up there.
Why Evansville homeowners call A&B Evansville Insulation Services for crawl space work
The owner writes your estimate
I come out, look at the crawl space and write the estimate myself, and our own crew does the work with me on most jobs. The person who measured your floor is usually the one laying the liner.
Straight answers about what's down there
I'll tell you plainly what I found, including when the real fix is a plumber or a gutter and not us. Crawl spaces collect a little of everything over the years, and you should know what you're paying to cover.
Fully licensed and insured
We're fully licensed and insured, which is the first thing to confirm before anyone goes under your house to work. If something goes wrong down there, it should be the contractor's problem and not yours.
Used to older Evansville crawl spaces
I came back to the trade in 2023 to start this business, and most of our calls come from owners of older homes in and around Evansville. Those are the houses with bare dirt floors, old vents and decades of storage underneath, so that's the kind of crawl space we're used to opening up.
Order matters more than anything else on this job. Tell us how big the crawl space is, whether there's water in it, whether it has vents, and what equipment sits down there, then call (812) 205-2872 or request your estimate.
Get a free on-site estimate for your crawl space vapor barrier
We reply within one business day to set a time. I come out, look at the crawl space and write the estimate on site. It's free, and there's no pressure to book.
What a finished liner looks like
Questions before a crawl space vapor barrier
How much does a crawl space vapor barrier cost in Evansville?
A vapor barrier with a commercial dehumidifier for a 1,500 sq ft crawl space in Evansville usually costs about $5,000 to $9,000 per job. A smaller space, a plain liner without the dehumidifier or less to clear out brings it down, and water repairs or a lot of piers to wrap push it up. Your own number comes from the estimate I write after seeing your crawl space, and the work is backed by our satisfaction guarantee.
What causes standing water in a crawl space, and do I have to fix it first?
Standing water in a crawl space usually comes from a leaking pipe or groundwater, and it has to be removed and the source repaired before a liner goes down. If the source isn't fixed, the water comes back and keeps the space damp, liner or not. In vented crawl spaces, most of the moisture starts outside, with poor grading, missing drains around the house or watering too close to the foundation.
Can I just close my crawl space vents once the vapor barrier is in?
No, closing the vents alone isn't enough to make a dry, sealed crawl space, and it can raise the moisture down there. If fuel-burning equipment that vents naturally, like an older gas furnace or water heater, sits in the crawl space, closing the vents can become deadly. ENERGY STAR's closed crawl space design adds a way to dry the air, such as a dehumidifier or a supply of conditioned air, so we look at what's in the space and plan the whole thing before anyone touches a vent.
Who is allowed to install a crawl space vapor barrier in Evansville?
Evansville and Vanderburgh County require a licensed contractor for work done on buildings. To get licensed by the city, a contractor passes a written exam and an experience check and shows proof of insurance, bond and workers' compensation insurance. The exception is you, since the city may issue a permit to an owner or immediate family member for work on the home they live in now, without a license.
Do I need a permit for a crawl space vapor barrier in Evansville?
It can, and the city's Building Commission is the office that decides. It issues permits for any work to any structure, and its list names foundation repairs and waterproofing but doesn't mention vapor barriers, so we ask before work starts and handle the permit when the job calls for one. That matters, because starting work that needs a permit before you have it triples the fee.
What is the best way to choose a vapor barrier liner for a crawl space?
Pick plastic at least 6-mil thick, which is what federal guidance calls for, and go thicker and reinforced if you can, because it holds up better. Plain 6-mil needs protection where people walk through to service a furnace or water heater, so a crawl space with that kind of traffic is better off with the sturdier liner. When you compare bids, ask whether the liner covers the whole floor and runs at least 6 inches up the walls, columns and footings, as the federal guidance calls for.
Other work that often goes with a crawl space liner
- Vapor barrier installation
When dampness is showing up somewhere besides the crawl space, a barrier in that spot keeps the moisture from finding another way into your rooms.
- Attic air sealing
Plugging the gaps at the top of the house slows the draft that pulls musty air up from underneath and through your living space.