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Got a wet basement? Musty odors? Protect your home with our proven solutions & lifetime warranty.

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Zip code: 20149

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3 Pros Basement Systems

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Our Services

  • Concealed drainage system
  • Powerful, reliable sump pumps
  • Battery backup systems
  • Patented waterproofing products
  • Energy-efficient dehumidifiers
  • Industry-leading warranties

Basement Waterproofing Companies in Washington

4137 E. 3rd Avenue
Post Falls, ID 83854
NW Idaho: including Pinehurst, Coeur d'Alene and Sandpoint.
NW Washington: including Spokane, Cheney and Furport.
View company profile for reviews, awards, before & after photos, and more.
18931 59th Ave NE
Arlington, WA 98223
NW Washington: including Everett, Mt. Vernon, and Bellingham.
View company profile for reviews, awards, before & after photos, and more.
5883 State HWY 303 NE Suite 101
Bremerton, WA 98311
NW Washington: including Raymond, Shelton, and Forks.
View company profile for reviews, awards, before & after photos, and more.
761 NE Garden Valley Blvd.
Roseburg, OR 97470
13110 SW Wall St
Portland, OR 97223
10111 S Tacoma Way D5
Tacoma, WA 98499
2001 NE 117th ST
Vancouver, WA 98686
Southern and NW Oregon: including Medford and Roseburg.
SW Washington: including Seattle, Tacoma, Olympia and Kent.
View company profile for reviews, awards, before & after photos, and more.

Each of the companies listed here is an authorized Basement Systems dealer in Washington offering expert basement waterproofing services including drainage and sump pump installation. In each company profile, you can read reviews and check out the contractor’s history, service area, ratings, and more.

Choosing a Reliable Waterproofing Company for Your Washington Basement

Having a wet basement is not fun to deal with. The risk of property damage and costly repairs all add to the stress of dealing with a damp basement. If you are suffering from constant worry about the health and safety of your basement, it’s time for a change.

Unlike other home improvement tasks, basement waterproofing isn’t a DIY project. An experienced, licensed basement waterproofer is equipped to properly diagnose basement issues. Whether it be pooling water, gaps in your foundation, leaky basement windows, or high humidity levels, a professional basement waterproofer will be able to detect such issues and provide a long-lasting solution. Don’t wait until your basement becomes a breeding ground for mold, pests, and other hazardous conditions. Contact your local Washington basement waterproofer today.

Look for expertise, training, and experience.

By choosing a basement waterproofer in the Basement Systems network, you’re getting a local company dedicated to the best waterproofing practices. Each contractor listed here is trained in the diagnosis of sub-grade moisture problems as well as the design and installation of proper drainage, moisture and humidity control, and basement materials. All Basement Systems contractors are licenced and certified to fix wet, damp basements and crawl spaces. You can assure your wet basement issues are a thing of the past with this kind of expert service! 

Demand high-quality basement waterproofing products.

Since 1987, Basement Systems has set the industry standard for dry basements. Your Washington Basement Systems dealer has exclusive access to 27 patented products that have helped homeowners over the past 30 years keep their basements dry. Such solutions include our WaterGuard basement drainage system,  UltraSump industrial-strength sump pump, and our SaniDry Sedona Basement Dehumidifier.

Other basement waterproofing products include basement wall and floor treatments, window wells, and basement window replacements. Browse the full line of basement waterproofing products.

Why Do Washington Basements & Crawl Spaces Get Wet?

Flooded basement: When it comes to precipitation, the state of Washington has some of the rainiest regions in the world. Seattle, for example, has a reputation for frequent rain, with an average of more than 150 rainy days. This can easily lead to flooding. When flooding hits your area, your basement is most likely to be the prime target for water damage.

Other wet basement signs: There are many possible sources for pooling water, damp basement walls or flooring, and high humidity. These include: rusty basement windows, poor grading around the foundation, leaks through cracks in the foundation, saturated soils, simple plumbing failures, and poorly functioning drainage or sump pump systems. A basement already musty and damp is ill-prepared for the next bad rainstorm! Basement waterproofing can address the underlying issues, prevent future water damage and improve the indoor air quality.

Basement Waterproofing & Crawl Space Repair

Waterproof your wet basement today! Basement Systems experts in the Washington area have helped homeowners for decades with their basement water issues. From identifying the source of leaks, flooding, groundwater seepage, and musty odors, our wide range of waterproofing and moisture control solutions have helped homes in Washington stay healthy and dry even in the toughest of storms. 

Wet Basement Solutions:
  • Basement Waterproofing
  • Crawl Space Encapsulation
  • Leak Basement Window Repairs
  • Exclusive Drainage & Moisture-Control Products
  • Industrial-Strength Sump Pumps 
  • Energy-Efficient Self-Draining Dehumidifier    
Dry Basement and Crawl Space Benefits:
  • Usable Basement or Crawl Space
  • Healthier Indoor Air
  • Mold, Dust, and Pest Reduction
  • Lifetime Transferable Warranty
  • Home Value Protected
  • Peace of Mind When It Rains!

Next Steps to a Safe, Dry Basement in Your Washington Home.

Basement Systems products address every major basement or crawl space problem, including moisture intrusion, flooding, leaky windows, structural rot, and excessive humidity. The best basement waterproofers for your Washington home are those who can diagnose the source of the problem and have the training, expertise and experience to design and install an effective system that keeps your basement dry.

1) Read Reviews & Check Out Past Work

Spend your time reading through the reviews of the basement waterproofing companies listed here. Check out their profiles that highlight their work (before and after photos), awards, and experience.

2) Get inspections and cost quotes

Call or fill out the Free Estimate form to set up an inspection of your basement. When you choose Basement Systems authorized contractor, you’ll get a free book on how basements are constructed and why they get wet, a custom design solution, and written estimate at no charge.

3) Choose Your Contractor & Enjoy the Result!

Choose a basement waterproofer based on the proposed solution, quality of materials, reputation of the contractor, and the price. Remember you only want to waterproof your basement once! After the work is completed, enjoy your dry basement for storage, finishing, laundry, and entertainment.

Washington's Trusted Waterproofing Companies

  • "Thanks for all your hard work." Read Full Testimonial

    Eileen K. of Sandpoint, ID

    Customer Testimonial

              Thank you for all your hard work on my basement project. Your crews have been wonderful to work with. The office staff has been helpful and great as well. I will highly recommend your company to anyone who asks. I feel like I've made new friends as well. Thank you Eileen Keller
    Eileen K.
    Sandpoint, ID
  • "I have been completely impressed with how everyone at Rainy Day has communicated with us about everything..." Read Full Testimonial

    Sherman B. of Sultan, WA

    Customer Testimonial

              I have been completely impressed with how everyone at Rainy Day has communicated with us about everything they planned to do. From the first sales call until the final day of work. Everyone went out of there way to make sure we knew what to expect next. The operations manager came out at the beginning of the project, and a job this big is definitely a project and went over the work one more time and gave us a rough schedule on when they expected to get the work done. He also kept us updated on the crews schedule on a daily basis because they were facing some unexpected weather challenges due to snow in the area. We had a couple of crews involved in the project and the foremen of each crew made sure we knew just what they were going to be doing that day when they arrived and then what they had accomplished just before they left in the evening. The only thing I would like to see is to have the operations manager come by one last time after the work was completed and inspect the final installation. I recently had a new roof put on by a small roofing company in the area and after the job was completed the owner of the company came out and inspected the work and found a few (very few) items he thought needed correction and had someone come out and fix them. I really appreciated that extra care since I am far from an expert on roofing. The same applies here with the crawlspace and the Rainy Day material. I'm far from being an expert on this part of our home so one last look at the work by someone who is would be awesome. Bottom line is I think the system should be very helpful in controlling both moisture in the crawlspace and therefore the house and in controlling rodents that are a constant issue when you live in a rural area with woods and fields surrounding the house.
    Sherman B.
    Sultan, WA
  • "Looks great, nice clean work. Dan seemed trustworthy. Trusted our referral also. Happy with the job :)" Read Full Testimonial

    Renee and Patrick M. of Arlington, WA

    Customer Testimonial

              Looks great, nice clean work. Dan seemed trustworthy. Trusted our referral also. Happy with the job :)
    Renee and Patrick M.
    Arlington, WA
  • ""It has been the best home improvement I have made on my house since I bought it. I used to be totally..." Read Full Testimonial

    Alex S. of Sedro-Woolley, WA

    Customer Testimonial

              "It has been the best home improvement I have made on my house since I bought it. I used to be totally afraid, every time it would rain, my basement would flood, and since the put the basement system in, I not only not worry anymore, but I actually enjoy the sound of the rain whole house smells better, everything is dry, everything works in order, and the customer service has been just absolutely unmatched. Anytime I have a question or concern, they are super quick to get back to me, super quick to take care of me, can't recommend them enough."
    Alex S.
    Sedro-Woolley, WA

Have Basement Systems solve your basement or crawl space water problem. From the Coastal Region to the Puget Sound Lowlands, Cascade Mountains to Okanogan Highlands and Columbia Plateau, your local Washington basement experts will be happy to help transform your wet, leaky or humid basement into a usable, dry, healthier space today! 

Improve your home starting with a free basement inspection and estimate!

You wouldn’t call a plumber to reroof your house. Don’t call a handyman to fix a wet basement. Call in the specialists who have been revolutionizing basement waterproofing since 1987. Basement Systems and its network of dealers have solved wet basement problems for hundreds of thousands of homeowners throughout the United States, Canada, the United Kingdom, and Ireland. As a Basement Systems dealer, we offer a system that consists of patented products and proven techniques that aren't available to other contractors or handymen. Allow us to show you why it’s the leading waterproofing system in the world. Whether you simply want to use your basement for storage and a laundry, or are planning to convert it to living space, the first priority is to make sure it’s dry. We can help. 

Customer Reviews
  • By Judith &.
    Dallas, OR
    "Just improve the communication between the front office and the customer"

    Customer Review

    By Judith &.
    Dallas, OR

    Just improve the communication between the front office and the customer
  • By Joyce M.
    Salem, OR
    "Overall very professional, customer oriented, clear in explanations of..."

    Customer Review

    By Joyce M.
    Salem, OR

    Overall very professional, customer oriented, clear in explanations of what is needed. Both salesperson and crew were very pleasant and easy to communicate with.
  • By Ronan F.
    "Our experience with TerraFirma was great from beginning to end. They were..."

    Customer Review

    By Ronan F.

    Our experience with TerraFirma was great from beginning to end. They were very fast, efficient, clean and courteous. We had the crawlspace encapsulated and our whole house smells and feel better. No more mold and bowed floorboards. And they were cheaper than the competitors.
  • By Tom G.
    Anacortes, WA
    "Dan did a great job explaining the system along with the different..."

    Customer Review

    By Tom G.
    Anacortes, WA

    Dan did a great job explaining the system along with the different options. We knew right upfront what the final price would be so there were no surprises.  
  • By Cathy S.
    Coeur D'Alene, ID
    "The dry-wall crew was great also! Everyone was very clean and..."

    Customer Review

    By Cathy S.
    Coeur D'Alene, ID

    The dry-wall crew was great also! Everyone was very clean and professional. This is actually my daughters house and she is very picky. She is very happy with the results!
  • By Lynn
    Coeur D Alene, ID
    "I am well pleased with the work your company provided."

    Customer Review

    By Lynn
    Coeur D Alene, ID

    I am well pleased with the work your company provided.
  • By Barbara N.
    Post Falls, ID
    "I needed the project to wrap up by 5:30 p.m., at the very latest. They ran..."

    Customer Review

    By Barbara N.
    Post Falls, ID

    I needed the project to wrap up by 5:30 p.m., at the very latest. They ran over, and I was an hour late to a meeting. I'm glad they finished, and I was forgiven for being late.
  • By Kay B.
    Newman Lake, WA
    "Everyone was very professional and great customer service!"

    Customer Review

    By Kay B.
    Newman Lake, WA

    Everyone was very professional and great customer service!
  • By Jeff S.
    Greenacres, WA
    "Prompt, professional and courteous"

    Customer Review

    By Jeff S.
    Greenacres, WA

    Prompt, professional and courteous
Click to see why people hire us

Recent job requests for basement waterproofing in WA:

Project Location: Colbert, WA 99005

Comment: Our basement flooded in a closet due to snow melt and water leaking over the foundation. We need to remedy this issue so it doesn't happen again.

Project Location: Cheney, WA 99004

Comment: Water in the basement every Spring

Project Location: Cheney, WA 99004

Comment: Leaky basement

Project Location: Sumner, WA 98390

Comment: We have a water oroblem in our basement. We need a sysem that drys it out,. The basement is a partial basement We have comletely removed everything from the basement.

Project Location: Burlington, WA 98233

Comment: We're getting wet spots, mid-floor, in the basement. I suspect that because of the rain, water is getting under the house and seeping up through the floor.

Project Location: Ferndale, WA 98248

Comment: Water entering basement through large floor cracks

Project Location: Castle Rock, WA 98611

Comment: Garage floods in heavy rain where wall meets floor . Daylight basement. Please help

Project Location: Hoodsport, WA 98548

Comment: Our basement floods during heavy rains. We installed a small pump, but that doesnt keep up with the amount of water that comes in.

Project Location: Ocean Shores, WA 98569

Comment: Thank you for your guidance. Silt continually clogging our sump pump and we must routinely blast/spray to manually remove the silt. We hope to consult with you to determine whether there is a better system or way to augment our system to prevent the buildup of silt. We have had several floods and while the warm weather is here want to have expert advice to avert a recurrence of the problems once rain begins this fall. Thank you very much.

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