Basement Waterproofing Contractor Seattle, WA

North West Concrete Resurfacing is a provider of superior waterproofing solutions for damp or flooded basements. Our highly skilled crew of Seattle superior waterproofing experts use only products, technology and engineered strategies to correct basement and foundation issues.

We ensure that our service will keep your basement dry to eliminate musty smells and prevent mold formation. 

We can handle leaking in walls, floor cracks and every other issue that is keeping you from having a dry and functional basement area. Don’t stress, leave it to us!

empty white basement

Seattle Commercial and Residential Basement Waterproofing

Your home or building maintenance plan wouldn’t be complete without moisture control for the basement area. Otherwise, you’ll end up with a flooded, damp and musty space that will be rendered useless as it worsens over time. 

If you want to make the most out of this space, a waterproofing slab protection is what you need. Here are the tell-tale signs that you will benefit greatly from our service:

  • Damp or wet basement flooring, walls, and ceiling.
  • Discoloration and stains from constant moisture.
  • Standing water puddling on the floor.
  • Salt deposits and efflorescence on concrete surfaces.
  • Unpleasant musty odor.
  • Leaky windows.
  • Condensation.
  • Sump pump issues.

We Offer a Reliable Concrete Waterproofing Seattle Plan for Your Basement

As an experienced concrete waterproofing Seattle contractor, we understand that waterproofing isn’t a one size fits all solution. Factors and instigators causing leaking and vary from one basement to another. 

So we provide customized plans to target the cause of your leaking or flooding basement. This ensures that you get an efficient and cost-effective solution that addresses your needs. Our basement waterproofing system includes the following:

newly constructed basement

Basement Leak Detection

Our basement waterproofing specialists give your home and basement a thorough inspection to find the root cause of the problem. Only time-tested detection methods along with innovative technology are used in this process.

Industrial and Residential Foundation Repair

A damaged foundation is extremely susceptible to water problems. Our experts handle foundation damages like cracks, settling, or shifting for optimal leak prevention.

Basement Drainage and Downspouts

Installing a perimeter drain where the foundation walls and floor meet is one of the most effective waterproofing methods. This collects water to be pumped out away from the basement.

Concrete Crack Repairs

Concrete cracks on the walls or floor can let water seep through making the basement damp and musty. Without repair solutions, we can ensure that your basement cracks will be dealt with accordingly.

Exterior Waterproofing

Directing roof runoff away from the building or home foundation is of utmost importance. Exterior waterproofing deals with this through grading and exterior drainage improvements.


High humidity levels are expected from the basement area and are oftentimes the cause of excess moisture. Installing a dehumidifier fit for basement conditions can effectively address this problem.

Choose the best among Seattle waterproofing contractors. If you think you deserve nothing less, give us a call today! +1 (206) 922-4612

We want our clients to understand their waterproofing options to make sound decisions easily. We aim for you to benefit from our services for the long haul. 

Our team, with years of expertise, will work with you throughout the entire process. And by that, we mean from the initial consultation and beyond the final installment of your waterproofing system.

We make sure to only use top-tier and quality products to get the job done right.

Reap the benefits of a proper wet basement repair Seattle and basement waterproofing plan today! Send us a form or call us at +1 (206) 922-4612

We also offer other types of decorative concrete resurfacing options such as stamped, stained, epoxy coatings, polyurea polyaspartic coatings, and more for residential and business areas! 

Frequently Asked Questions

Waterproofing a basement would cost around $3 to $10 per square foot. On the other hand, finishing a basement will have a price range of about $32 to $47 per square foot.

Applying polymers and membranes to coat the exterior walls, installing an underground trench drain, or combining both methods. If these methods are done correctly, this will be an effective system for waterproofing a basement.

Apply a suitable masonry waterproof product on the interior walls. Once it dries out, it will form a watertight bond which helps stop water from seeping in. 

Yes, you can waterproof a basement from the inside.

It is best to waterproof the outer walls of the basement during construction.

Waterproofing from the outside can prevent external leaks from coming into the house and helps protect the foundation from crumbling down. Internal waterproofing, on the other hand, helps protect from internal leaks.

A typical price range to repair a deck is around $250 to $1,200, while a low-end will cost between $48 to $150. High-end repairs range from  $1,800 to $3,000. This will still vary, depending on the deck’s size, the extent of the damage, and material costs.

If the repair cost is growing closer to the cost of replacing the deck, you should consider replacing the whole thing. Even if the deck looks structurally sound but is already a few years old, replacing it would be the best call.

Our Clients:

University of Washington
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