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Basement Waterproofing in Seatac, WA

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Water intrusion, dampness, and mold growth are critical issues that can arise in basements, especially in SeaTac, where the region experiences an average annual precipitation of around 36 inches. The combination of the area's wet climate and the clay-rich soil can lead to significant water problems, increasing the risk of structural damage. Matvey Foundation Repair offers reliable basement waterproofing solutions, including sump pumps, interior drains, dehumidifiers, and wall vapor barriers to keep your basement dry and safe.

In SeaTac, Washington, Groundworks has merged the expertise of Rainy Day Crawl Space & Basement and Matvey Foundation Repair to provide outstanding foundation repair and waterproofing services. Our team's specialization in crawl space and basement solutions, along with Matvey's foundation repair capabilities, guarantees exceptional service and top-tier solutions for all your waterproofing needs. Under the Groundworks banner, we are committed to ensuring safe and stable home environments throughout SeaTac. Contact us today for your free inspection.

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Groundworks is Seatac's Basement Waterproofing Expert

Serving Seatac and the surrounding areas
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Recent Work Completed Near You

8,421 basements waterproofed by the Seattle branch

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Why your neighbors trust Groundworks

We've earned 459 five star reviews.

"Matthew Somerville was the inspector for my resident. Matthew introduced himself in a Professional but cordial manner. Matthew was very informative, patient & spoke in layman's terms. He didn't talk at me he spoke to me. I was able to understand which will assist in my decision. Thank you Matthew"

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Our in-house crews are certified and local to your area.

Our work comes with a nationally backed warranty.

Types of Basement Damage in Seatac

Common Causes of your Basement Problems in Seatac

Foundation Cracks

Cracks in foundation walls or floors can let water seep into your basement, especially during heavy rain.

Poor Drainage Systems

Ineffective drainage, such as clogged gutters, downspouts, or poorly graded yards, directs water toward your foundation.

Hydrostatic Pressure

Water in the soil builds pressure against basement walls, filling the clay bowl, and forcing water through cracks and joints.

High Water Table

Rising groundwater during heavy rain or snowmelt can seep into your basement through cracks or porous concrete.

Faulty or Missing Sump Pump

Water from heavy rainfall or flooding can accumulate in your basement without a working sump pump.

Plumbing Leaks

Leaking pipes or fixtures near your foundation can saturate the soil, causing water to seep into your basement and cause moisture related problems.

Basement Waterproofing Solutions We Provide For You in Seatac

Control Wall Moisture

What We Do

  • Inspect basement for vulnerabilities
  • Take custom measurements
  • Provide lasting moisture solutions

What We Use

 Vapor Barrier Learn More

Control Groundwater Seepage

What We Do

  • Identify leakage sources
  • Consider your home's unique needs
  • Install a reliable drainage system

What We Use

 Sump Pump Learn More
Drain System Learn More
FreezeGuard Learn More

Control the Environment

What We Do

  • Recognize ventilation insufficiences
  • Offer options for moisture control
  • Regulate humidity levels effectively

What We Use

 Dehumidifier Learn More

Our Other Services in Seatac

Concrete Lifting
Crawl Space Repair
Foundation Repair

Our Groundworks' Seatac Office Serves You

Our Address

18915 16th Ave S, SeaTac, Washington 98188

Contact Us

(855) 976-0804

About Us

Meet our Seatac team, see our
service area, and get financing details
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Proudly Serving Seatac and Surrounding Areas

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Trust the experts at Groundworks

How it works

Straightforward and simple process

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Schedule an
inspection

Upon arrival, our Inspector will introduce themselves and chat with you about the problems you're experiencing. Based on the information you provide them, they'll then create a plan of action to examine your home inside and out.

Receive a detailed repair plan and quote icon

Receive a detailed
repair plan and quote

Once the inspection is complete, the Inspector will sit with you and present their findings. And because we provide same-day estimates, you'll have all the cost and financing information you need to make a decision right away.

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Get the work done
when you're ready

When you're ready to move forward with repairs, we'll help you choose an installation date that works for your schedule, and notify our Installation team immediately of the upcoming work.