Serving Longview, Kelso & Southwest Washington

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

Sump basin with discharge pipe installed in a crawl space

Serving Longview, Kelso & SW Washington

Crawlspace Waterproofing

$500OFF

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

Water getting into your crawl space is worth solving at the source. We find how moisture is getting in and recommend the right combination of fixes, not a one-size-fits-all package.

  • Diagnosis first: where and how water gets in
  • Waterproofing solutions matched exactly to the cause
  • Honest advice on what will and won't help

Call or Text (360) 470-4956

Request a Free Waterproofing Estimate

Tell us what you're seeing and when it happens. We'll follow up to set a time to look.

Fields marked * are required.

Prefer to talk? Call or text (360) 470-4956. We never sell your information. Privacy policy

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

Common signs

Signs water is getting into your crawl space

  • Seepage along the walls

    Water coming in where the foundation meets the soil, or through the walls themselves.

  • Stains or damp walls

    Dark patches, water lines or a damp look on foundation walls and piers.

  • Puddles after rain

    Water that shows up in the crawl space during or after storms.

  • Wet soil under the plastic

    Mud or moisture trapped beneath an existing barrier.

  • Moisture on pipes and framing

    Condensation or dampness on ducts, plumbing and wood.

  • A musty smell inside

    Damp crawl space air can make its way up into the house.

What crawl space waterproofing really means

Waterproofing is a general term for keeping water from causing problems in your crawl space. In practice, it's usually a combination of steps: collecting and draining water, moving it out with a sump pump if needed, and protecting the ground and walls with a sealed liner.

Which of those steps your home needs depends on where the moisture comes from and how it's getting in. Two crawl spaces with wet soil can need very different solutions.

  • Identify entry points and where water collects
  • Manage liquid water with drainage and, if needed, a sump
  • Protect the ground and walls with a liner
  • Explain the plan and priorities before any work starts

We'll look outside, too

Gutters, downspouts and the slope of the ground around your home can send water toward the foundation. If an outside fix will help, we'll tell you, even if it's something you can handle yourself.

How we find the source

We look for signs of water intrusion, soil conditions, wall stains, existing drainage issues and what's happening around the outside of your home, and we ask when you notice the water, especially after heavy rain. With the source identified, we put together a waterproofing plan that combines drain systems, a sump pump and foundation repairs where they're needed.

Real project photos

Before and after of our finished work

Real photos from Crawlspace Pros jobs.

Why homeowners choose us

Your home deserves a better crawl space

The right waterproofing plan starts with an accurate answer about where the water comes from. That's what you'll get from us.

  • 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

Crawlspace Waterproofing questions

What's the difference between waterproofing and encapsulation?

Think of waterproofing as managing the water and encapsulation as controlling the moisture. Waterproofing focuses on finding where water is getting in, preventing it from collecting, and directing it away from your home. Encapsulation uses a protective liner to control moisture coming up through the ground. Depending on your crawl space, you may benefit from one or both. We'll help you understand what your home needs and make sure the underlying water issues are addressed first.

How do you figure out where the water is coming from?

Finding the source of the water is the first step toward fixing the problem for good. We look for signs of water intrusion, soil conditions, wall stains, existing drainage issues, and even what's happening around the outside of your home. We'll also ask when you notice the water, especially after heavy rain. The more we understand what's happening, the better we can recommend a solution that keeps your crawl space dry and your home protected.

Is water in my crawl space an emergency?

It may not seem urgent at first, but water under your home is something you don't want to put off. Over time, excess moisture and standing water can lead to damaged insulation, wood deterioration, mold and other costly problems. If you're noticing pooling water, recurring dampness or a musty smell, it's worth having it looked at sooner rather than later. If water is entering quickly or rising significantly, give us a call right away so we can help you determine the next steps.

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 waterproofing 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

Find out how water is getting in

Call or send the form. We'll inspect, explain the cause, and recommend only what your crawl space needs.

Call Text Free Estimate