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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
Company Awards
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]
Dan Malsch is Awarded as a Salesman
Awarded Dan Malsch for BizWiz salesman... [Read more]
More Awards

Reliable Crawl Space Repair & Basement Waterproofing Company in San Juan County, WA

Happy Customers Surrounding San Juan County, WA
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Responsible basement waterproofing, sump pump installation, crawl space repair company serving San Juan 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 San Juan County, WA.

Services we offer in San Juan 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 San Juan County, WA
Crawl Space Mold Prevention in Olga, Wa

After owning their home in Olga for 18 years, Jim and Diane reached out to Rainy Day Basement Systems because they noticed there was insulation hanging down from the joists in their crawl space; in addition to the presence of mold and rodents throughout. After seeing what Rainy Day was capable of, Jim and Diane decided to go through with the project knowing it was going to help combat Diane’s asthma.

Their entire crawl space was encapsulated with CleanSpace, an antimicrobial crawl space lining meant to prevent water vapor and mold from developing. They also installed a SaniDry CX dehumidifier to keep the crawlspace at a steady temperature and humidity that encourages mold to become dormant and inhibits the growth of future mold. To top it off, they opted for the SmartDrain with Remote style Water Watch Alarm, which can detect any plumbing complications that may be leaking into the crawlspace. Often these types of leaks can go unnoticed as they simply absorb into the ground.

Jim and Diane are thrilled to now be living with a mold-free crawlspace, and Rainy Day is delighted to be a part of the solution.

Crawl Space Mold Prevention in Olga, Wa - Photo 1
Preventing Mold in Lopez Island, WA

Robert and Janne S. started to notice that their crawl space was collecting water soon after their house was built. And while they hadn’t physically seen mold yet, they knew that the with the humidity the way it was, it was only a matter of time before it began to appear. They were also concerned about dangling insulation and the presence of rodents.

Rainy Day Basement Systems encapsulated their entire crawlspace with CleanSpace, an antimicrobial crawlspace lining meant to prevent water vapor and mold from developing. They also installed a SmartSump pump along with an UltraSump battery back-up system for worst-case scenarios. To assist in the fight against mold, a SaniDry CX dehumidifier was installed to keep the crawlspace at a steady temperature and the humidity low enough to encourage mold to become dormant and inhibit the growth of future mold. Finally, they sealed it all off with an Everlast Crawl Space Door for easy access to and from their crawl space. These doors are specially made for sealing crawl spaces and are made of completely inorganic material that is waterproof, rust proof and resistant to the growth of mold.

Groundwater Seepage in Friday Harbor, WA Crawlspace

During our initial inspection of Michael’s Friday Harbor, WA, farmhouse, Rainy Day discovered groundwater seepage, mold, condensation, and pests in his crawlspace. We came to the home and got right to work with installing a new drainage system and crawlspace encapsulation system. A new three-in-one TripleSafe sump pump was also installed. We sealed all entries with vent covers and then added the SaniDry Sedona dehumidifier. Now, all of Michael’s moisture issues are simply a thing of the past.

Whether you are up north in Friday Harbor, or down south in Edmonds, we offer free inspections and estimates for all your waterproofing needs under the home. Call us today to schedule at 1-833-988-3570

Groundwater Seepage in Friday Harbor, WA Crawlspace - Photo 1
Woodboring Beetles and Sagging Floors in Eastsound, WA

Doug T. from Eastsound, WA, first spoke with our appointment center because he was interested in replacing the pier blocks at his hotel due to sagging floors. With the sale of the building coming shortly in the future, he was hoping to get the project done as soon as possible. When we got there, we found extensive powderpost beetle damage. Powderpost beetles are woodboring beetles attracted to places with wood and moisture. This makes crawlspaces and basements an absolute feeding ground for them. These pesky bugs are hard to get rid of because they can live up to a year and a half in infested wood. Rotting posts can often be replaced with SmartJacks, and we have the best tools and expertise to address Doug’s moisture problems and floor permanently. Addressing the underlying issue of water control will help alleviate the issue of continuous powderpost beetle damage in the future.

Call today to schedule a free inspection and estimate at 1-833-988-3570

Drainage and Sump Pump on Orcas Island
Dot and her family were purchasing a home on Orcas with some crawl space issues that needed repair. They received advice that they should repair it before the rainy season. We designed a system with our sump pump and a more sound drainage solution. With our TripleSafe sump pump, the crawl space has reliable protection from water. With our patented drainage piping, we fixed water leaking from the wall/footing joint.
Tired of dealing with a crawl space leak? Give us a call to schedule a free inspection and estimate at 1-833-988-3570.
Clean & Healthy Crawl Space in Friday Harbor, WA

Barrett and Libbey from Friday Harbor wanted the crawlspace of their new home clean and healthy. They wanted to get rid of mold smell in the office and is concerned about health impact of mold in the house. The system we designed to fix the problems under their home included a full-perimeter drainage channel, sump pump, and CleanSpace encapsulation. Our solutions leaves the home dry, energy efficient, and safe from mold and moisture.

Crawl Space Waterproofing System in Friday Harbor, WA

Friday Harbor homeowners were fighting standing water in their family home for multiple years. They were ready for our specialists to diagnose the problem to clearly identify the problem to stop the water. Experts at Rainy Day designed a system with interior drainage piping, sump pump, and encapsulation. This will not only keep the crawl space dry, but also will help create healthy air for the entire living space.

Waterproofing in Crawl Space and Basement, Olga, WA
Chris recently purchased a home with water in both the crawl space and basement. He was looking to get water taken care of and encapsulate the crawl space to control moisture.
Our System Design Specialist, Jean-Paul Holcomb, visited Chris at his home in Olga to right-fit a solution. Jean-Paul recommended a comprehensive waterproofing system for both the basement and crawl space. This included installing foam insulation, drainage, vapor barrier, sump pump, and wall restoration.
Our system would be able to control moisture and give Chris full protection with the work guaranteed to stop leaks no matter the weather.
Waterproofing in Crawl Space and Basement, Olga, WA - Photo 1Waterproofing in Crawl Space and Basement, Olga, WA - Photo 2
Flooded Crawl Space in Ferndale, WA

Gordon from Ferndale, WA, wanted to fix the crawl space in a newly built home. During heavy rain, the crawl space was flooding from groundwater. They wanted to fix it long-term to prevent structural issues later on. After calling Rainy Day, we sent Ed Upenieks, Design Specialist, to provide a thorough inspection and report his findings and solutions. We recommended installing a full-perimeter drainage system and sump pump, as well as encapsulation. With our waterproofing system, the home will stay dry and safe. 

Serving the following San Juan County, WA zip codes
Eastsound 98245, Lopez Island 98261, Friday Harbor 98250, Olga 98279

our service area