Vapor barrier installation in Kennewick WA - a crawl space floor covered edge to edge
Bare dirt or a torn cover in your crawl space? We lay a ground cover over the whole floor, sealed where your setup needs it.
- Fully licensed and insured.
- Free on-site estimates.
- Expect a reply within 1 business day.
Two ways to set up a vapor barrier
Ground cover with vents kept
A plastic cover laid over the whole dirt floor and out to the foundation walls, for crawl spaces where you'd rather leave the vents working.
Sealed cover with vents closed
The same cover with taped seams and edges sealed up the stem wall, the short foundation wall around the crawl space, when you want the vents shut.
What does vapor barrier installation in Kennewick involve?
Vapor barrier installation in Kennewick is laying a plastic ground cover across your whole crawl space floor and out to the foundation walls, so the dirt under your house is covered edge to edge instead of left open to the floor above.
Most people call us after they've crawled under the house for a pipe or a cold floor and found bare dirt, or plastic that's torn, bunched up or only covering half the ground. The price and the schedule turn mostly on how big the crawl space is, how much has to come out before the cover goes down, how tight the access is and whether you keep the vents or close them, since closing them adds sealing and more parts to the job. If cold floors are the real complaint, the cover often goes in alongside crawl space insulation. I look at all of that on the visit, and your written estimate lists each step in the order we'd do it and why. We're based in Kennewick and work in the cities around it on both sides of the state line.
What a vapor barrier job covers
Every job starts with one question for you, whether to keep the crawl space vents or close them, because that choice changes what goes into the job from the first step to the last.
Clearing the floor
We haul out stored boxes, scrap and any old torn plastic first, because the new cover has to reach every part of the ground.
Fixing what comes first
If the floor insulation above has fallen or soaked through, I'll say so and we'll plan retrofit insulation before the cover goes down.
Laying the cover edge to edge
We roll the cover across the whole crawl space and up to the foundation wall, overlapping every joint so no dirt is left showing.
Sealing to match your vents
Joints and edges get sealed where the plan calls for it, which is most of the work when the vents are being closed.
Gaps at the other end
Air leaking out the top of the house pulls air up from below, so we can look at attic air sealing too.
Why homeowners call Reliable Kennewick Insulation Services
I care most about the parts nobody sees once we leave, like the back corner where the cover meets the foundation. You'll know what each part of the job is for before you agree to it. Call (509) 396-5461 to set a visit.
I look first and check last
I come out to see every crawl space myself, our installers do the work, and I check it before we call the job finished.
In business since 2013
I learned this trade on another contractor's crew before starting this business in 2013, and careful crawl space and attic work is still most of what we do.
Fully licensed and insured
We're fully licensed and insured, and the estimate you agree to lists the same steps our installers follow under your house. Satisfaction guaranteed.
What happens after you call about a vapor barrier in Kennewick?
We plan the job around your house and your schedule, starting with the vent question and what I find under the floor, so nothing gets decided before I've seen the crawl space.
or call (509) 396-5461
You call or send the form
Call (509) 396-5461 or use the form, and we'll set a time for me to come out to your house.
I look under the house
I check the crawl space, the vents and the floor, and ask how the house has been behaving, like cold floors or odd smells.
You get a written estimate
It lists each step in the order we'd do it and why it comes there, so you can see what you're paying for.
Get a written plan for your crawl space cover and vents
Tell us whether your crawl space has vents and whether the floor is dirt or concrete, and we'll reply within one business day to set a visit. The on-site estimate is free, with no pressure to book.
Vapor barrier questions from Kennewick owners
Does my crawl space in Kennewick need a vapor barrier?
Yes, if the floor is bare ground, because Washington's code calls for a ground cover of black polyethylene plastic, or an approved equal, laid over the dirt and reaching the foundation wall. A crawl space with a concrete slab floor at least 2 inches thick may go without one. If yours is dirt with gaps or torn plastic, it's worth covering properly.
How do I close my crawl space vents in Washington?
Washington's code waives crawl space vents when a sealed, continuous Class I vapor retarder, the type that lets the least moisture through, covers the ground and a radon system is installed. In practice that adds taped seams, sealed edges and a radon system to the job. The code also lists a continuously running exhaust fan that vents outdoors as a condition for going without vents. Radon matters here because it comes up from the ground under a house and can reach tens or even hundreds of times outdoor levels.
Can I keep my crawl space vents with a vapor barrier?
Yes, and with an approved Class I vapor retarder over the ground, Washington's code says a vented crawl space may use a smaller total vent area. If you want the vents cut below the code's level, or louvers that open and close, the code requires a radon vent from under the cover. Keeping the vents is the simpler job of the two, and I'll write out both on your estimate so you can compare.
How much does crawl space encapsulation cost in Washington?
Crawl space encapsulation in Washington usually costs about $6,000 to $10,800 per home, and that's the full sealed job with the vents closed, not a basic ground cover in a vented crawl space. Your own figure comes from the written estimate after I've been under your house.
What is the best way to lay a vapor barrier in a crawl space?
Cover every part of the floor, which is why federal weatherization guidance has stored items and debris cleared out first. The same guidance says the cover should leave the crawl space's established drainage working as it was, and it seals seams and spots where pipes come through with a durable, compatible sealant only in crawl spaces without vents. That's why the vent decision comes first, because it decides how much sealing the job needs.
How do I know if an insulation contractor is licensed in Washington?
Washington requires every construction contractor to register with the state Department of Labor & Industries, and state law requires them to be bonded and insured. On a home job of $1,000 or more, the contractor also gives you a written disclosure notice.
Work that often goes with it
Attic air sealing
If upstairs rooms run drafty or hot, closing the gaps around lights, pipes and the attic hatch keeps air from leaking out the top of your house.
Explore Attic air sealingRetrofit insulation
Older houses often have thin or missing insulation in floors and walls, and adding it without tearing the house apart helps with cold rooms and the power bill.
Explore Retrofit insulationCrawl space insulation
When the floors over your crawl space stay cold, insulation between the floor joists goes in well alongside a new ground cover underneath.
Explore Crawl space insulation
Vapor barrier installation in Kennewick and close by
Kennewick requires a residential building permit for home remodels and alterations, and the city's list of exempt work names finish work, not vapor barriers, so whether your job needs one isn't settled ahead of time. Before we start, we ask the city's building office, and if a permit is needed, we take care of it with them. If you'd like to ask yourself, the Building Safety Division takes those questions at 509-585-4276.
Around Kennewick we mostly find vented crawl spaces with bare dirt or old plastic that's torn or bunched against the walls, and we see the same on jobs in Pasco and Richland. On the Oregon side the rules aren't Washington's, so we ask there too.