Washington

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Stop Water Damage Before It Starts

Basement Waterproofing in Washington

R&R Foundation Specialist provides basement waterproofing services throughout Western Washington for homeowners dealing with wet walls, standing water, leaking cracks, musty conditions, and recurring moisture after heavy rain.

Washington’s rainfall, saturated soils, hillside properties, and drainage conditions can all affect how water moves around a foundation. Instead of recommending the same system for every home, we begin with an inspection to identify where the moisture is coming from and determine the appropriate solution.

Our waterproofing options include interior and exterior drainage, sump pump systems, wall sealing, crack repair, and other solutions based on your home’s specific conditions.

Schedule a Free Basement Inspection

Serving homeowners throughout Western Washington. View our Service Area to see where we work.

 

Why Basement Waterproofing Matters

Common Signs You Need Basement Waterproofing:

A wet basement isn’t just inconvenient – it’s a threat to your home’s foundation, air quality, and overall safety. Waterproofing your basement now prevents costly damage later and keeps your home healthy.

If water is already entering the basement, learn more about the common causes of a Wet Basement and the options available for controlling moisture.

Damp or wet walls after rain and water collecting on the basement floor

Musty odors caused by hidden moisture and mildew

Efflorescence (white powdery deposits) on concrete or white mineral deposits on masonry

Water entering through cracks or wall-floor joints

Mold growth along walls or behind furniture

Common Environmental and Structural Factors

What Causes Basement Leaks and Moisture Issues?

Even the best-built homes in Western Washington are vulnerable to water intrusion. With our region’s heavy rainfall and complex soil conditions, basements often face moisture problems that worsen if left untreated.

  1. Poor exterior grading or landscaping that directs water toward the home – If the soil around your home slopes inward, water naturally flows toward your foundation, pooling along basement walls and eventually finding its way inside.
  2. Clogged or damaged gutters and downspouts – When rainwater isn’t properly directed away from your home, it spills over and soaks the soil at your foundation, contributing to leaks and long-term water damage.
  3. Hydrostatic pressure pushing water through foundation walls – As groundwater builds up in saturated soil, pressure mounts against your basement walls, forcing water through tiny cracks or porous concrete.
  4. Cracks in foundation floors or walls – Even small cracks are entry points for water. During rainy months, these cracks allow water to seep in, creating dampness and eventually leading to mold growth.
  5. Inadequate or failed waterproofing systems in older homes – Many older Washington homes were built without modern drainage or sealing systems, leaving them especially vulnerable to leaks and moisture.

Custom Waterproofing Plans for Long-Term Protection

Basement Waterproofing Systems and Solutions

No single waterproofing system is right for every basement. The appropriate solution depends on where the water is entering, drainage conditions around the home, groundwater pressure, the condition of the foundation, and how the basement is constructed.

After inspecting the property, R&R Foundation Specialist can recommend the combination of drainage, water management, and repair solutions appropriate for the home.

Interior drainage systems to direct water to a sump pump

An Interior Drainage System collects water that reaches the foundation and directs it toward a sump pump or other discharge point before it can spread across the basement floor.

Exterior excavation and waterproof membrane installation

The appropriate exterior solution may involve drainage improvements, excavation, waterproofing membranes, or improvements to how water is directed around the property.

Crack injection and wall sealing

Crack injection fills and seals foundation cracks to stop active leaks and reinforce structural integrity.

Sump pump installation and backup systems

A sump pump and backup system automatically remove collected water and keep your basement protected during power outages or heavy storms.

Crawl space and basement dehumidification

Dehumidification systems control humidity levels to reduce mold, odors, and moisture damage in crawl spaces and basements.

More Ways We Protect Your Home

Comprehensive Home Care

We offer additional services to keep your home safe, stable, and healthy year-round:

Interior Drainage Systems

Exterior Drainage Systems

Wet Basement

Sump Pump

Wall Sealing

Why Choose R&R Foundation Specialist?

Why Choose R&R Foundation Specialist?

Free, No-Obligation Inspections and Honest Recommendations

Fully Licensed and Insured Crews

Long-Lasting Results Backed By Industry-Leading Techniques And Products

Locally Owned and Operated With Deep Knowledge Of Washington Soils

Get Clear Answers from the Experts

FAQs About Basement Waterproofing in Washington

How do I know if I need basement waterproofing?

If you see moisture, mold, or efflorescence, or notice musty smells after rain, it’s time for an inspection.

Can waterproofing be done from the inside?

Yes – interior waterproofing is often the most cost-effective method and can be installed year-round.

Will waterproofing increase my home’s value?

Yes – a dry basement is a major selling point for potential buyers.

What causes basement leaks in Washington?

Heavy rainfall, poor exterior grading, and clogged gutters create hydrostatic pressure against foundation walls, forcing water inside through cracks or joints.

Will waterproofing reduce mold and musty odors?

Absolutely. By stopping water intrusion and controlling humidity, waterproofing protects air quality and eliminates the conditions where mold thrives.

Is basement waterproofing a one-time fix?

Yes, when done properly with drainage and sump pump systems. Regular maintenance of sump pumps and gutters helps ensure long-term performance.

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.

Affordable Solutions Without Delay

Flexible Financing Options for Every Budget

A dry basement shouldn’t have to wait. We offer financing plans that make it easy to protect your home now and pay over time.

Benefits of Our Financing Program:

  • Fast and easy application process
  • Affordable monthly payment options
  • No prepayment penalties
  • Competitive interest rates

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