Washington

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Crawl Space Waterproofing in Washington

Keep Moisture Out, Protect Your Foundation

Prevent mold, wood rot, and foundation damage with proven crawl space waterproofing solutions that keep your home dry and healthy.

Protecting Your Home from Moisture Damage

What Is Crawl Space Waterproofing?

Waterproofing your crawl space means installing drainage systems, vapor barriers, and sump pumps to keep water out and prevent long-term damage.

In  Washington, frequent rain and high groundwater levels make crawl spaces especially vulnerable to leaks and standing water.

Without waterproofing, excess moisture can lead to:

Mold and mildew growth that impacts indoor air quality

Wood rot that weakens floor joists and beams

Higher energy bills due to damp air infiltration

Structural damage to your foundation over time

Proven Steps to Keep Your Crawl Space Dry

Our Crawl Space Waterproofing Process

Waterproofing your crawl space isn’t just about stopping leaks  –  it’s about addressing the root causes of moisture and creating long-term protection. Our team takes a comprehensive approach, combining advanced drainage systems, sump pump technology, and vapor barriers to ensure your home stays safe and dry.

By removing water intrusion at the source, we prevent costly damage like mold growth, wood rot, and foundation weakening. Our methods are minimally invasive, efficient, and tailored to your property so you can enjoy peace of mind knowing your crawl space is properly protected.

Repair process:

  1. Inspection & Diagnosis Identify moisture sources, drainage issues, and foundation concerns.
  2. Drainage System Installation Place interior or exterior drains to direct water away.
  3. Sump Pump Setup Install or upgrade pumps for reliable water removal.
  4. Vapor Barrier Placement Line walls and floors to block moisture intrusion.
  5. Final Testing & Cleanup Verify waterproofing effectiveness and leave the area tidy.

Answers to Common Moisture & Water Concerns

Crawl Space Waterproofing FAQs

How do I know if my crawl space needs waterproofing?

Signs include standing water, mold growth, musty odors, wet or stained walls, and increased humidity in your home. These issues often indicate that water is entering your crawl space.

Can waterproofing prevent foundation damage?

Yes. By keeping water out, waterproofing protects your foundation from soil erosion, wood rot, and cracking caused by excessive moisture.

What waterproofing methods do you use?

We use vapor barriers, drainage systems, sump pumps, and wall sealing to keep crawl spaces dry. Our solutions are customized to your home’s needs.

Does waterproofing improve indoor air quality?

Yes. By stopping moisture and mold, waterproofing reduces allergens and improves the air you breathe inside your home.

How do Washington’s soils and rainfall affect crawl spaces?

Heavy rainfall combined with clay-rich or poorly draining soils often leads to standing water under homes. Waterproofing prevents long-term damage from these conditions.

Can waterproofing stop musty odors in my home?

Yes. Musty smells are usually caused by mold and mildew in the crawl space. Proper waterproofing and moisture control eliminate the source of these odors.

Do I need both waterproofing and encapsulation?

In many cases, yes. Waterproofing stops water intrusion, while encapsulation seals out moisture and outside air for full protection. Together, they deliver the best long-term results.

Still Have Questions About Crawl Space Waterproofing?

Can’t find the answer you’re looking for? Contact the R&R team today  –  our experts are here to help you understand your options and find the right solution.

Trusted by Homeowners Across Washington

Real People. Real Results.

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Dana Smith
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Update 4/12/26 The company reached out to us, came to our home and made a plan to properly lift our house. The work was done in a timely manner and we had a much better experience with them this time around. We are very happy with how things turned out. Awful company. We paid over $38,000 to raise our foundation 1.5”. It started cracking and they were unable to do what they said they could. They “stabilized “ it and left with our savings. It was the biggest waste of money and I suggest you go elsewhere. Garbage. Our house feels like it’s sinking more.
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Longitude 120 Engineering & Design
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If you need foundation repair, R&R Foundation Specialist should be your first call. Their team is one of the most reliable and professional that we have had the privilege to work with in the industry. We regularly refer clients to Cory and his extremely hard working and well trained staff, for all foundation repair, retrofit, lifts /stabilization needs.
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Kirsten Burt
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So I had some work done by r and r back in 2019. I had six piers put in and really enjoyed Corey the owner… fast forward to 2026 and the other part of my house started having weird sounds and a crack in my ceiling… I live on a hillside and tons of water comes my way and a user error with a downspout may have caused more issues… I made an appointment to have him come Out and do an inspection with a bid…. It’s pretty rare these days to not feel like you have gotten taken… Cory did all the measurements and well it appears the house is just settling. The house was built in 1980 by the original owners and was definitely not built straight. Anyway… Cory literally put me at ease and said. “Let’s just keep these measurements and check them out in a year or so. “He could have easily have just said… “yup. You need six piers….” He didn’t. I highly recommend r and r foundation… thanks for being honest… it goes a long way! Also… when I do need the work done… I, of course, will be using them!
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Philip Kogler
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House built in 1913 did not disappoint with challenges with a leaking foundation into the basement. But, R&R came through and I am able to feel confident that any further water issues are no longer. If the opportunity presented itself, I would hire them again.
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Julie Carlson
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I had them come out to my house to look at an issue of water seeping into my garage which is built into a hill. For reasons that have nothing to do with them, I didn't end up getting the work done. However of the four companies I had look at it, R&R's assessment was easily the most thorough. They are the only one that did any significant inspection outside of the building rather than just inside the garage and their prices were comparable to the other companies I checked out.
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Andrew Harpster
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Had R and R do some work on our older home that needed an update to the crawl space foundation posts a few years back. Work was accomplished in a timely and professional manner. Now in 2025, we are selling our home in a slow market and want to upgrade. We need to show the new buyers the application to transfer the foundation warranty ahead of the inspection in a few days as a show of good will to close the home. R and R's marketing manager, Jordan, was able to accomplish this promptly within one day for us and really set us up well to help close our home. While the foundation repair was important, it was years later, being able to connect with R and R again, and show the new buyers the work they had done and that it was done by a reputable company, that helped seal the deal.
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Christine Freitas
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We have had a great team from initial contact, proposal, work start, communication with office and project managers and crew all were courteous, kind, informative, and we rate them over the top.

Protect Your Home Without the Stress

Financing Available for Crawl Space Waterproofing

A dry, healthy crawl space shouldn’t be delayed because of cost. That’s why we offer flexible financing options to fit your budget.

Benefits of Our Financing Program:

  • Fast and easy approval process
  • Low monthly payments that work with your budget
  • Options for all credit types
  • Start waterproofing immediately without waiting

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