Seattle Basement Waterproofing & Mold Control Services
The Only Solution You Need for Permanent Water & Mold Control
Voted the top basement waterproofing and water intrusion contractor in the Pacific Northwest, we help Seattle-area homeowners stop leaks, prevent moisture damage, and protect their homes from mold with permanent, science-based solutions. Trusted by thousands of local families, our team delivers guaranteed results backed by decades of expertise and a lifetime transferable warranty.
Is Your Home At Risk Of Water Intrusion?
EVALUATE a water intrusion risk before it’s too late! Is your home 40 years old or older? Do you have a basement? Is your home on a hill? Have you or your neighbors recently changed a grade around your house? Are there any new apartments or housing developments built within last three years in your area? Are the gutters and downspouts functioning well? Have you noticed some cracks or settlements in the house foundations or steam walls? If you answered yes to any of these questions, your home could be at risk of water intrusion – with devastating results.
The best protection against such a disaster is PREVENTION! Contact us
Is Your Home Flooded? Act Quickly!
Has water flooded your home? This is a true emergency and must be addressed at once! Don’t leave wet carpets or floors unattended. Water damaged areas must be dried within 24 to 48 hours to prevent mold growth. Moreover, once water has eroded a path into your home it is unstoppable. Reoccurring flooding will occur and the resultant mold and fungi growth are now your number one concern. Run to a local hardware store or rental place and get blowers and humidifiers. This would save you money that you will need to use for installing a permanent solution.
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Don’t panic! Contact us IMMEDIATELY!
There Is A Permanent Solution For You!
The key to mold control is moisture control. Wet Basement Services combines simple water redirection with state-of-the-art drainages and membranes to control water intrusions permanently. We have a 100% success rate in extreme water abatement. We’ve helped clients who suffered for decades from winter flooding of their basements. Our system desaturates liquefied soils under your house footings and basement floor slab. This solution is different than most drainage systems of our local competitors, which act only like a “band aid”, and not address real sources of the issue you have.
We Fix Your Issues PERMANENTLY!
We are a local, family-owned basement waterproofing and mold remediation contractor proudly serving homeowners across Seattle, Bellevue, Redmond, Kirkland, Issaquah, Bothell, and the surrounding Pacific Northwest communities. For more than four decades, we’ve helped families protect their homes from water intrusion, moisture damage, and mold with proven, long-term solutions backed by unmatched expertise and a lifetime warranty.
Our Holistic Approach
Mold Control
Evidence-based inspection is a staple of our company's modus operandi. Hydrology is a complicated science as well as biology and organic chemistry of mold-related issues. We, as Interior Environmental Professionals, serve our community with knowledge and experience.
Water Control
Leaking and flooding basements can lead to hazardous mold growth, major health issues and costly home repairs. Rock solid solutions of which you have my personal guarantee, and I back it up with a Lifetime Transferable Warranty.
Professional Expertise with Permanent Solutions
Experience without knowledge is blind! I am Jerzy Radka, owner and founder of WBS working in the waterproofing and mold control field since I graduated with a Master's in Forestry and a postgraduate in Environmental Protection in 1983. My company has proven solutions to your water and mold issues. Rock solid solutions of which you have my personal guarantee, and I back it up with a Lifetime Transferable Warranty
Mission and Knowledge Based Company
Evidence-based inspection is a staple of our company's modus operandi. Hydrology is a complicated science as well as biology and organic chemistry of mold-related issues. We, as Interior Environmental Professionals, serve our community with knowledge and experience to permanently resolve water intrusions and mold-related problems in any building basement.
Family Owned and Operated
We are a family owned, knowledge-based and mission-driven local company, with thousands of happy clients with ongoing relationships. When we give you our bullet-proof warranty we enter into a relationship with you, and we have your back covered no matter what which is unapparelled to our competitors. Don't need to count on our word for it - ask our clients. We will provide you with a contact list.
Lifetime transferable warranty on our interior basement waterproofing services.
Exterior Water Control Service
Our exterior waterproofing consists of excavating foundation walls to the bottom of the footings. Once the area is excavated, the walls are covered with exterior membranes, like Delta or Mira drains, which expand drainage areas to all layers of the soil profile. In addition, we may seal the dry walls with waterproofing solution. At the side of the footings, we install new drainage pipes wrapped in drainage fabric and cover the drain pipes with P-gravel, apply a layer of landscape fabric on top of the pea gravel and drainage, then back fill trench with soil and compact it.
Schedule Your Free Inspection and Quote
The Extreme Water Abandonment (EWA) System
Shield your home from water intrusion for life, guaranteed.
Our proprietary Extreme Water Abandonment (EWA) system provides a permanent, science-based waterproofing and moisture control solution backed by a lifetime transferable warranty. We design systems that stop basement flooding, relieve hydrostatic pressure under foundations, and restore walls and floors to long-term stability.
Why Our Waterproofing System Is Superior
Superior Drainage Engineering
We install building-code–compliant 4" PVC drainage piping — not the smaller, less effective drains commonly used by competitors. Combined with vertical wall drains and deep-soil desaturation, this ensures optimal water flow, protects finished basements, and prevents mold growth.
Precision Concrete Removal
Our wet-cutting vacuum saw method prevents micro-cracks and structural damage during installation. Most companies skip this essential step, which can lead to future leaks, moisture buildup, and mold problems.
Expert Mold Remediation & Moisture Control
If mold is present, our trained specialists follow strict health and safety protocols to contain, treat, and prevent cross-contamination. We also provide certified laboratory testing for accurate mold identification.
Advanced Dust & Air Quality Protection
Your health is our priority. We use professional dust-control systems — encapsulation, dust knockdowns, HEPA shop vacuums, air scrubbers, and high-velocity fans — to minimize exposure to silica dust and keep your home safe and clean.
A Warranty You Can Trust
Our lifetime transferable warranty is one of the strongest in the industry. We stand behind every installation and proudly provide client references and reviews so you can verify our long-term results and reliability.
Invest in Permanent Protection
Basement waterproofing is a major investment, and the quality of the system matters. Our engineering-based approach is designed for long-term performance, structural protection, and total peace of mind.
Schedule your free inspection and estimate today.
Licensed, Bonded & Insured | Contractor No. GREENIL992BA
