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Reviews From Sumas
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

Licensed Basement Waterproofing & Sump Pump Installation in Sumas, WA

Happy Customers Surrounding Sumas, WA
Work Requests

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Do you have basement flooding, crawl space moisture or mold, cold floors, or other basement or crawl space-related problems? Rainy Day Basement Systems provides Sumas, Washington homeowners with reliable basement waterproofing, crawl space encapsulation, basement insulation, and more. We are the Basement and Crawl Space Specialists, committed to creating a reliable experience for every homeowner who trusts our professionals with their basement or crawl space repair needs.

Whether you need complete basement waterproofing or a moisture-proof crawl space encapsulation system, you can trust us for these solutions and much more!

Our Services include:

  • Basement Waterproofing
  • Crawl Space Encapsulation
  • Basement and Crawl Space Insulation
  • Basement Air Purifier Installation
  • Sump Pump Installation & Service
  • Foundation Crack Repairs

Schedule a free estimate to learn more today! We proudly serve Sumas, WA and surrounding areas.

Wet Basement Repair & Waterproofing in Sumas

Wet basements wreak havoc on your home's foundation, and as a homeowner, you want fast, reliable solutions. Rainy Day Basement Systems provides innovative, award-winning, and patented basement waterproofing solutions. We want to remedy your wet basement efficiently to prevent mold growth, structural issues, pest problems, and more. Schedule a free estimate with our trusted professionals today and leave your waterproofing issues in the past!

Our basement waterproofing solutions include:

  • Sump pump installation & maintenance
  • Interior drainage systems
  • Self-draining dehumidifiers
  • Subfloor matting
  • Drywall repair systems
  • And more!

Don’t wait to protect your home against water in the basement! Schedule a free, no-obligation basement waterproofing estimate today.

Sumas crawl space repair & encapsulation solutions

When crawl space moisture problems are left untreated, they can lead to mold growth, wood rot, sagging floors, musty odors, unhealthy indoor air, and discomfort throughout the house. Waterproofing and sealing the crawl space with the right solutions can eliminate odors and provide improved air quality, comfort, energy efficiency, and an overall healthier home.

Our crawl space solutions include:

  • CleanSpace vapor barrier
  • Structural support jacks
  • High-performance dehumidifier
  • Rigid foam insulation
  • Crawl space winterization
  • Interior drainage systems and sump pumps

Schedule a free crawl space repair estimate today! We proudly serve Sumas, WA and surrounding areas.

Insulation for your basement or crawl space in Sumas Insulating your basement or crawl space can improve the energy efficiency of your whole home. Whether you have a basement, crawl space, or both, we know to properly air seal and insulate basements and crawl spaces to increase the comfort and durability of the home and provide a drier, usable conditioned space for home occupants, stored items, or HVAC equipment. Our professionals can pinpoint issues and recommend the right solutions based on home your home’s needs that will save you money and prevent comfort and moisture issues in the future.

We offer insulation solutions for:

  • Exterior basement walls
  • Crawl space walls
  • Basement floors
  • Crawl space floors
  • Concrete slabs
  • Dirt crawl spaces

Schedule a free basement or crawl space insulation estimate in Sumas, WA today.

Case Studies From Sumas
Marvin called Rainy Day to get an estimate, so we sent out Rainy Day’s Ed Upenieks to his location in Sumas, WA, to help design a waterproofing...
Job Stories From Sumas, WA
Basement Waterproofing in Sumas, WA

Marvin’s semi-finished basement in Sumas was periodically leaking in water during heavy rains. He was in a hurry to fix it before beginning his home remodel, so he allowed Rainy Day the opportunity to repair his wet basement permanently.


Our solution was to install WaterGuard around the perimeter of the basement. WaterGuard is a sub-floor perforated drainage channel used to help collect and discharge water through a high-capacity sump pump system. We installed our TripleSafe sump pump in an airtight basket to prevent clogging with three pumps in one, including a battery backup pump, to handle any potential water leaks.


Marvin can now enjoy peace-of-mind with a dry basement and healthy living space.


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

Work Requests From Sumas, WA
Project Location: Sumas, WA
Getting ready to sell house. Crawl space was flooded in 2021 Sumas flood. No damage to insulation but vapor barrier was displaced and needs to be removed and replaced. Looking for cost estimate. House is 1750sqft, crawl space is about 3' high.
Project Location: Sumas, WA
Clean and install crawl space space insulation And maybe a dehumidifier under house
Project Location: Sumas, WA
With recent floods in Sumas, WA my crawlspace did get water in it and it did get insulation. Would like a quote for crawlspace repair and one with crawlspace repair with adding a sump pump. Also do you offer financing?
Project Location: Sumas, WA
We just went through a flood. All the installation needs replaced. The floor underneath is not level and the vapor barrier needs replaced. We do have flood insurance also
Project Location: Sumas, WA
Had standing water in the crawl space this winter, so I would imagine I need a sump pump. Also probably need some insulation work.
Project Location: Sumas, WA
There is about 1180sq ft we need to have a vapor barrier put in. Or can purchase the barrier and put in our self.
Project Location: Sumas, WA
We need the insulation underneath the house removed and replaced.
Project Location: Sumas, WA
We just had our home inspected and were informed we need to have our crawl space cleaned of debri, our pipes insulated, and new plastic laid down.
Project Location: Sumas, WA
Plumber says I have rodent problems and need to have access holes repaired.

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