Serving Longview, Kelso & Southwest Washington

Open 24 hours, 7 days a week Call or text (360) 470-4956

New black vapor barrier covering the ground in a crawl space

Serving Longview, Kelso & SW Washington

Crawl Space Vapor Barrier Installation

$500OFF

When You Book TodayRequest your estimate online or mention this offer when you call.

Bare dirt or torn, worn-out plastic under your home lets ground moisture into the crawl space. We remove what's failed and install a new vapor barrier that properly covers the ground.

  • Old, torn plastic removed first
  • New barrier laid over the soil with overlapped seams
  • Full ground coverage with clean, secure edges and seams

Call or Text (360) 470-4956

Request a Free Vapor Barrier Estimate

Tell us what's covering the ground under your home now. We'll follow up to set a time to look.

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  • Licensed, Bonded & Insured
  • 10+ Years Experience
  • Family Owned & Operated
  • Free Estimates
  • Serving Longview & Kelso, WA

Common signs

Signs your vapor barrier needs replacing

  • Exposed soil

    Bare dirt showing under the house, or no barrier at all.

  • Torn or shredded plastic

    Rips, holes and pieces that have been pulled apart over the years.

  • Gaps at the seams

    Sheets that have shifted, leaving soil exposed between them.

  • Water or mud on top

    Puddles or dirt sitting on the plastic instead of underneath it.

  • Thin, brittle plastic

    Old material that cracks or crumbles when it's moved.

What a vapor barrier does

Soil gives off moisture vapor all the time. A vapor barrier is a durable sheet laid over the ground that limits how much of that moisture rises into your crawl space. It also gives you a cleaner surface for future repairs.

  • Remove old, damaged plastic
  • Lay a new barrier over the soil
  • Overlap seams and fit around posts and piers
  • Point out any water or humidity issues along the way

Built to code and built to last

Washington's residential code calls for a ground cover in vented crawl spaces: six-mil black polyethylene or an approved equal, with seams overlapped at least six inches and the cover extending to the foundation walls (WAC 51-51-0408). Many older homes in Southwest Washington have plastic that's far past its life, or none at all. We install full coverage from wall to wall, fitted tightly around every post, pier and pipe.

A new barrier is also the natural finishing step after a cleanout, insulation replacement or structural repair.

Real project photos

Old barriers we replace, and new ones we install

Real photos from Crawlspace Pros jobs.

Old, dirty crawl space plastic that is torn and bunched up
Old plastic that's torn and no longer covering the soil.
Bare soil exposed where old crawl space plastic has pulled away
Exposed soil where old plastic has pulled away.
New black vapor barrier covering the ground around round concrete piers in a crawl space
A new barrier covering the ground across the crawl space.
New black barrier fit around concrete piers in a crawl space
A new barrier fit around the piers.

Why homeowners choose us

Your home deserves a better crawl space

A vapor barrier is a straightforward job, and it should be priced and explained that way.

  • Family owned, small and independent

    You deal directly with the people doing the work under your home.

  • 10+ Years Experience

    More than a decade working in crawl spaces across Southwest Washington.

  • Licensed, bonded & insured

    WA contractor license OUTSIOG746BH.

  • Straightforward pricing

    A clear scope and price before any work starts. No surprises.

  • Clear communication

    Call or text any time. We keep you informed from inspection to cleanup.

  • Free estimates

    We take a look, explain what we find and give you a written estimate.

How it works

Four simple steps from first call to clear plan

  1. 1

    We listen

    Call, text or send the form and tell us what you're noticing — smells, water, sagging floors, old insulation.

  2. 2

    We inspect

    We look at the crawl space and the conditions around it so the recommendation is based on what is actually there.

  3. 3

    We explain

    You get a plain-language walk-through of what we found, with photos when that helps, and which problems matter most.

  4. 4

    We lay out the work

    You receive a free, straightforward estimate for the work we recommend. You decide what happens next.

Questions

Vapor Barrier Installation questions

How do I know if my vapor barrier needs replacing?

If you can see bare soil, the plastic is torn or brittle, the seams have pulled apart, or mud is sitting on top, it's time for a new one. We'll inspect it and give you a clear recommendation.

Do you remove the old plastic?

Yes. Old, torn plastic is removed before the new barrier goes in, so you're not just covering up the old one.

How long does installation take?

We'll give you a clear timeframe with your estimate, so you know exactly when the job will be done.

How do I get an estimate?

Getting started is easy. Call or text (360) 470-4956, or fill out the form on this page. We'll learn what's going on beneath your home, schedule a time to take a look, and give you a straightforward vapor barrier estimate.

From our customers

What homeowners say

Loved every aspect of working with Johnathon. Straightforward pricing, no hidden surprises, friendly, and hard working. Made every aspect of our crawlspace nightmare easy to understand and went above and beyond to make it happen.

Zach AuldGoogle review

I feel very happy and pleased with the work Jon did under my house. He cleaned up the entire crawl space!! Jon is hard working and I would recommend him highly.

Henry RettingerGoogle review

I've been working w/ Jon and CrawlspacePros on some structural issues in my old home, and they've been kind, quality, honest, and they care that I'm happy with the outcome. That means a lot to me. Thank you gentlemen.

e gGoogle review

Read or leave a Google review

Related services

Often looked at alongside vapor barrier installation

Crawlspace Encapsulation

A sealed liner over the ground and up the walls to cut moisture from the soil and help control damp crawl space air.

Learn more

Crawlspace Drain Systems

Drain pipes that collect water entering the crawl space and move it to a sump or outlet instead of letting it pool.

Learn more

Crawl Space Insulation

Removing failed, sagging or wet insulation and installing new insulation between the floor joists.

Learn more

Crawlspace Cleanouts

Clearing out debris, old plastic, fallen insulation and leftover materials so the space is clean and ready for repairs.

Learn more

Replace the old plastic under your home

Tell us what's down there now. We'll take a look and give you a clear vapor barrier estimate.

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