(775) 980-1020Mon–Sun: 8 AM–9 PM
M&T Fernley Spray Foam Insulation
A black vapor barrier covers a crawl space floor beneath wooden joists, with white plumbing pipes and a dark flexible duct overhead.

Crawl space vapor barrier in Fernley NV - a crawl space floor covered wall to wall

Musty smell, damp dirt or torn plastic under the house? We deal with the water first, then cover the whole floor and every pier.

Tell us what's under your house

Let us know whether your crawl space has vents and whether a water heater or furnace sits down there, so I know what to check first.

Request an estimate

Do you need a crawl space vapor barrier in Fernley?

A crawl space vapor barrier in Fernley is a heavy plastic ground cover laid over the dirt under your house, and it helps hold back the ground moisture and soil gases, like radon, that rise into the space.

Most crawl spaces I look at have bare dirt, a few torn sheets of old plastic, or damp ground nobody has dealt with. The price moves with the size of the space, how much has to be hauled out, how many walls and piers the cover wraps, and whether water has to be fixed first. The schedule mostly turns on that water work and on whether a permit is needed. Your estimate lays out what comes first and what can wait. If the floors upstairs run cold too, crawl space insulation can go in once the space is dry. We're based in Fernley and work in Silver Springs, Sparks, Reno, Fallon, Dayton and the cities around them.

Why Fernley homeowners call M&T for crawl space vapor barriers

  • The owner crawls in first

    I come out myself, get under the house and write your estimate, then our own installers do the work. You get a straight call on what needs doing now and what can wait.

  • In business since 2017

    I spent years on roofing crews before switching to insulation, so I look for the leak or the wet spot first. A cover laid over a water problem is money wasted.

  • Licensed and insured, permits handled

    We're licensed and insured. When a crawl space job needs a permit, we pull it and line up the inspections with the office that covers your address, whether that's Fernley's building department or the county's.

Down there, the order of the work matters most, water first and cover second. Get in touch or call (775) 980-1020 and I'll come take a look.

How we put in a crawl space vapor barrier

First I find where water gets in, because plastic laid over a wet floor only traps the problem. Then our crew clears out the old plastic, stored items and debris so the cover can reach every corner. We run the ground cover over the whole floor and up the walls and piers, not just across the open middle where it's easy to reach, and we seal the seams so no bare dirt is left at the edges. If a gas water heater or furnace sits down there and we're sealing the space, we get it safety checked afterward, so its exhaust goes out of the house and not back in.

Some houses need more than the crawl space. If damp air or ground moisture is also a problem in a basement, a wall or an addition, our vapor barrier installation covers those spots. And because air leaking out the top of the house pulls damp air up from below, attic air sealing is often the next job worth doing once the crawl space is covered.

  • Ground cover only

    This suits most vented crawl spaces with a dry floor. You get the plastic down now and keep the option of sealing the space later.

  • Repair an old cover

    This fits when the old plastic is mostly sound but torn, shifted or short of the walls. We patch it and carry it out to every edge and pier.

  • Fully sealed crawl space

    This suits a house where you want the space closed off from outside air, often with the walls insulated too. It's the bigger job, and it only works once the water is handled.

How can you tell your crawl space needs a vapor barrier?

  • Musty smell indoors

    A damp, musty smell in the house usually means moisture is rising from the dirt under the floor. Left alone, it soaks into the framing and insulation down there and gets harder to clear.

  • Torn or patchy plastic

    Old plastic that's ripped, bunched in the middle or short of the walls leaves bare dirt open to the space. Every gap lets moisture through, so a half cover does about half the job.

  • Wet dirt or puddles

    Dark, damp soil or standing water after the sprinklers run means water is getting in. That has to be fixed before anything is sealed, and waiting lets it reach the wood.

  • Sweating pipes and ducts

    Drips on cold pipes or ducts in summer, or rust on metal straps, point to humid air in the crawl space. Over time it rusts fittings and dampens the insulation around them.

What happens when you call us about a Fernley crawl space?

  1. Call and I come look

    You call and I come out myself to look in the crawl space and tell you on the spot what I see. Your written estimate says what has to be fixed first and what can wait.

  2. Our installers do the work

    Our own installers clear the space and lay the cover once any water fixes are done. If the job needs a permit, we handle it before work starts.

  3. I check it before finishing

    I go under the house myself to check the edges, piers and seams before we call it finished. Then I walk you through what was done and anything left for later.

Crawl space vapor barrier questions

These are the questions Fernley homeowners ask most about the plastic under their house. If yours isn't here, call and ask about your own crawl space.

Do I need a ground cover if my crawl space has vents?

Yes, national building guidance says a plastic ground cover belongs in a crawl space whether it's vented or sealed. That means you can cover the dirt now and decide later, as a separate choice, whether to seal the space.

What should be fixed before sealing my crawl space?

Drainage and any water getting in around or under the house should be fixed before the space is sealed and its walls insulated, so it stays dry once it's closed up. If you're planning a sealed crawl space, budget for the water work as the first step. Some lots around Fernley sit on soil with a seasonal high water table from April through September, so I check for that before I recommend sealing.

What causes moisture in a crawl space?

In a vented crawl space, most of the moisture usually comes from liquid water getting in. Poor grading, missing drainage around the house and sprinklers that soak the foundation are the usual causes, so I look at the yard as well as under the house.

What does crawl space encapsulation cost in Nevada?

Full crawl space encapsulation with a vapor barrier and a dehumidifier usually costs about $5,500 to $9,500 per job in Nevada. That's the price of a fully sealed space, so a ground cover alone is a different job, and the size of the space, the clearing and any water fixes move the price most. Your estimate gives your own number.

Who issues building permits in Fernley?

Fernley's Building Department & Code Enforcement issues building permits in the city, covering construction, remodels and other structural work. You can ask them whether your crawl space job needs one at 775-784-9900 or check the city's online permit center. If yours does, we take care of it.

How do I install my own crawl space vapor barrier in Nevada without a contractor license?

Nevada exempts owners from contractor licensing when they improve a home they'll live in themselves, not one they plan to sell or lease. You apply for that exemption with the Nevada State Contractors Board. If you'd rather have it done, call and I'll come look.

Get a free crawl space estimate

Tell us about your crawl space and how to reach you, and we'll reply within one business day to set a time. I'll come out for a free on-site estimate, with no obligation to go ahead.