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Products & Services
Basement Repair Services & Products
WaterGuard Interior System
DryTrak Drainage Channel
TrenchDrain Drain Grate
IceGuard Discharge Line
FlexiSpan Wall Crack Repair
Polyurethane Crack Sealing
WellDuct Window Drainage
BrightWall Waterproof Panels
ThermalDry Wall Barrier
Basement To Beautiful Pre-finishing Wall Insulation Panels
Drain Tile Installation
SuperSump Pump System
TripleSafe Pumping System
UltraSump Battery Back Up
Sanidry Dehumidifier

Crawl Space Repair Services & Products
CleanSpace Encapsulation Vapor Barriers And Liners
Turtl Access Hatch
EverLast Crawl Space Doors
Sanidry Csb Dehumidifier
SmartDrain Water Drainage
SilverGlo Wall Insulation
TerraBlock Floor Insulation
SmartSump Sump Pump
Crawl-o-Sphere Crawl Space Fan
WallCap Block Wall Sealer
SmartVent Flood Vents

Before and After Pictures from King County
Crawlspace Drainage in Redmond, WA

Crawlspace Drainage in Redmond, WA

Before After
Crawlspace Drainage in Redmond, WA Crawlspace Drainage in Redmond, WA

Before getting work done by Rainy Day, Bill would get water in his crawl space all the time. Even after installing a sump pump, he still would get water in it. He called our crew out for the job and we were able to install new crawl space drainage in Bill's home.

Crawl Space Mold in Woodinville, WA

Crawl Space Mold in Woodinville, WA

Before After
Crawl Space Mold in Woodinville, WA Crawl Space Mold in Woodinville, WA

These homeowners in Woodinville, WA, purchased their dream home with the intent of living out their years there. Unfortunately, due to a severe allergy to mold and autoimmune disorder, the family was unable to occupy it. Their crawl space was unhealthy because of mold and moisture. We installed our CleanSpace Encapsulation System, which seals the crawl space and helps keep it dry and prevents mold. Now they can enjoy their home worry-free, with clean air for the whole house. 

Crawl Space Vapor Barrier and Humidity Control in Woodinville, WA

Crawl Space Vapor Barrier and Humidity Control in Woodinville, WA

Before After
Crawl Space Vapor Barrier and Humidity Control in Woodinville, WA Crawl Space Vapor Barrier and Humidity Control in Woodinville, WA

For these homeowners, it was important to seal their crawl space and insulate it. Like many homeowners, they were experiencing a strong sensitivity to mold. Our CleanSpace Encapsulation System helps transform moldy and musty crawl spaces to help make them healthy and livable again. A 20-mil thick liner is sealed and attached to the walls and floor, which isolates the home from the ground below. The antimicrobial material helps prevent moisture, mold, and pest intrusion, and our dehumidifier conditions the space to clear out airborne contaminants and keep humidity at bay. 

Company Awards
BBB A+ Rating
Rainy Day Basement Systems boasts an A+ rating with the Better Business Bureau and enjoys perfect customer satisfaction with stellar... [Read more]
Installed 1 Million Sq. Ft. of CleanSpace
At the 2017 IMPACT Convention, the Rainy Day Basement System team were awarded for having installed 1 million square feet... [Read more]
EnerBank USA 2023 Star Performer Award
Rainy Day Basement Systems has been recognized by EnerBank USA as a 2023 Star Performer.... [Read more]
More Awards

King County, WA's Verified Sump Pump Installation & Basement Waterproofing Contractors

Always followed up when called. Polite, prompt, efficient. Presentation was impressive, thorough, and timely. Tyler's crew was friendly, quick, and...
Happy Customers Surrounding King County, WA
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Reviews From King County
Testimonials From King County
Very good. You were the only company we found w/ the product we wanted, willing to install.
Testimonial by Lyle and Julie M. from Seattle, WA
I want you to know that I was very impressed by Zach. He was very professional & explained very clearly...
Testimonial by Jacqueline H. from Lake Forest Park, WA

Responsible basement waterproofing, sump pump installation, crawl space repair company serving King County, WA

We not only adhere to the highest industry standards, we strive to be the industry leader in the home improvement related services we provide. We also use state-of-the-art products and technology which are designed to fix your home. We are the authorized Basement Systems dealer in King County, WA.

Services we offer in King County:

  • Wet/flooded basement waterproofing solutions.
  • Lifetime warranty on all perimeter waterproofing systems.
  • Sump pump installation and repair services.
  • Annual maintenance on your sump pump from our professionals.
  • Crawl space sealing with CleanSpace vapor barrier.
  • 25-year warranty on crawl space encapsulation systems.
  • Financing Available
  • FREE written estimates and inspections, and fast installation
Job Stories From King County, WA
Waterproofing Crawl Space in Redmond, WA

Bill and Ruth of Redmond, WA, first initiated contact with our office due to water getting into their crawl space. There was water on top of the existing vapor barrier, indicating insufficient drainage and wanted to find a way to keep the space dry all the time. We came to the rescue and installed new crawl space drainage to lead water to our SuperSump sump pump system. The piers, walls, and floors were completely sealed with our CleanSpace encapsulation system, a heavy-duty vapor barrier that completely protects the crawl space from intrusion. All of the vents were closed-off, and we put in a SaniDry dehumidifier to maintain proper humidity below 55%. The result was a completely dry, healthy environment for years to come.

Crawl Space Moisture Barrier in Bothell, WA
Lisa and Todd were planning to sell their home in Bothell. During a pre inspection, they found out the vapor barrier in the crawl space needed replacing. They contacted Rainy Day for a free estimate.
Design Specialist, Ryan Adams, proposed we first clean out their crawl space. Then, he recommended installing a 6 Mil black poly vapor barrier. Next, we would fill their Positive Drain with concrete to prevent future water from coming in. Once complete, this project will help bring the home up to speed and ready for sale.
For a free inspection and estimate, call today to schedule at 1-833-988-3570.
Water in Bothell, WA Crawl Space

Royce's crawl space started having water seepage, which made its way into his basement with about an inch of standing water during the recent heavy rain. He and his family never wanted to have to deal with flooding again, so we designed a solution ensure it stays dry. We installed crawl space drainage to collect water from the perimeter of the area. We installed our TripleSafe sump pump at the low spot to handle high volumes of water with ease. The space was encapsulated using 1012 square feet of CleanSpace, our 7-layer vapor barrier. The system will address the major problem areas to ensure no more damage is done and the home is protected.

For a free crawl space inspection, call today to schedule at 1-833-988-3570.

Musty Smells in Bothell, WA Crawl Space

Liviu from Bothell was dealing with a bad odor in their crawl space. They were unsure of what was going on under the home, so they requested our help. The crawl space had lots of moisture above the vapor barrier and an overloaded sump pump. We installed our crawl space drainage channel along the inside perimeter at the wall/floor joint. We connected that to a newly installed SuperSump Plus sump system to better handle the volume of water coming in. Now, the home is dry and protected.

For a free estimate for your crawl space or basement, call today to schedule at 1-833-988-3570.

Creating Storage with Encapsulation in Bothell, WA Crawlspace
Sean was looking to increase the storage space in his home through using his crawlspace. He saw what Rainy Day could do, so gave us a call. We sent out Ed Upenieks to design a new encapsulation system for his home in Bothell. We cleaned, insulated, and sealed the crawl space in CleanSpace and Foamax. Then, We installed our SaniDry Sedona Dehumidifier to keep humidity low. Now he can safely store his belongings under his home.
For a free inspection and estimate, call today to schedule at 1-833-988-3570.
Mold, Water, and Rodents in Carnation, WA Crawl Space

Beth and Lee from Carnation, WA,  were referred to Rainy Day for their crawl space. They had been living in the home for many years and noticed water, rodents, and mold.


We did a full clean out of the crawl space, and then installed our waterproofing system, sump pump, and dehumidifier. 


We applied a botanical mold treatment to affected areas and set their home up to stay nice and dry for many years to come. 

Water Seeping into Basement, Kenmore, WA

Jenna from Kenmore had a partially finished basement that she used mainly for storage. There was water seeping up through the floor by the stairs during heavy rains. She called Rainy Day looking for recommendations on what to do.


We proposed installing a drainage channel along the perimeter of two adjacent basement walls, along with our sump pump system. Our solution will fix the leaking and keep the basement dry from here on out.

Wet Basement Repair in Kenmore, WA

Sally and Dale from Kenmore, WA, contacted Rainy Day Basement Systems after water began leaking into their basement. The area included a storage room, bathroom and living area. It was the first time had experienced a leak of this caliber after heavy rain. Design Specialist, Ed, came out for a free inspection and estimate, and discovered water was seeping through foundation at the wall/floor joint. 


Our crew installed WaterGuard Interior Basement Drainage, and our CleanSpace Wall System along two walls. We also put in a strategically placed SuperSump Pump System to pump water out of the home, along with a battery backup pump. This solution ensures the system will capture groundwater seepage and discharge it before damage can occur.


Their basement will now stay dry all the time, and the work is guaranteed. 

Crawl Space Vapor Barrier Duvall, WA

Alex and Jessica's home in Duvall, WA, needed a new vapor barrier installed. After hearing about encapsulation, they were interested in learning more. They called Rainy Day Basement Systems, and Nathan visited the home for a free estimate. The couple had the short-term goal of preventing rodents in the crawl space, but ultimately wanted to improve energy-efficiency, air quality, and comfort. They had problems with allergies, which can often be tied back to an unhealthy or moldy crawl space. We encapsulated their crawl space using our CleanSpace Vapor Barrier, and installed our TerraBlock and Foamax InsulationTo keep humidity low and prevent mold, we installed a high-performance dehumidifier and air filtration system, our SaniDry Sedona. Alex and Jessica now have a dry, healthy, and energy-efficient home, with clean air throughout.

Crawl Space Vapor Barrier Duvall, WA - Photo 1
Crawl Space Encapsulation in Shoreline, WA

Laura from Shoreline, WA, called us about her crawl space. She was looking to improve the home, and interested in encapsulation. Our expert, Ryan, came out to the home to provide a no-obligation inspection and estimate for free. He assessed the crawl space and found presence of rodents and dampness. He designed a system that would fix her home and improve improve it permanently using our CleanSpace Encapsulation System. CleanSpace is a fully-sealed vapor barrier that is attached to accessible dirt walls and floors to help isolate the home from the damp ground. It helps with blocking out mold, moisture, pests, and odors. In addition, sealing the space can help with ensuring comfortable floor temperatures, energy-efficiency, and air quality in the living space. 

Basement Waterproofing Woodinville, WA

Homeowners, Carol and Dan, called Rainy Day because they were having moisture problems with their home in Woodinville, WA. Water was leaking slowly through their foundation on one wall. We sent out Ryan to provide a free inspection, no-obligation estimate. The problems were ongoing for the past four to five years, and their biggest concern was mold and refinishing. To solve their wet basement troubles, we recommended installing WaterGuard Interior Basement Drainage. WaterGuard is a patented drain system designed to capture leaks along the stem wall. Water is then pumped out of the home through a TripleSafe Sump Pump, and discharged out toward a backfill area. The result is a dry basement, with groundwater seepage under control. 

Serving the following King County, WA zip codes
Bothell 98011, Kenmore 98028, Woodinville 98072, Duvall 98019, Carnation 98014

our service area