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Best basement waterproofing pros near Sumas, WA

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Top-Rated Basement waterproofing pros in Sumas - Updated Nov 2026

Near Me Roofing Company
5.0(
74
)
Basement Drainage Channels - Repair

Serving Sumas, WA and surrounding areas

Approved

In business since 2012

Free estimates

Credit card accepted

"Excellent service and very thorough with explanation and getting the right. I researched many skylight installation companies and decided to hire Ari and Elijah. I will recommend my colleagues and friends and family. I will absolutely use this roofing company for any roof work on my house."
Response time4 days
Recommended by80%of homeowners
Avatar for American Concrete N Masonary
American Concrete N Masonary
5.0(
6
)
Basement Drainage Channels - Install

Serving Sumas, WA and surrounding areas

In business since 1990

Free estimates

Emergency services offered

"I needed a garden path from my house to my art studio, and I wanted it to match the concrete path already going from my house to the garage. Not a big job, but American Concrete Construction was willing to take it on. Their main guy, Sinisia Moli, came right out one day to evaluate the job, then returned the next day to survey, dig out the path, frame it, and put in rebar. Cement was poured the following day. And now I have my garden path. Which, incidentally, matches the other, much older path perfectly. ... Sinisia Moli of American Concrete Construction is a man of experience, good aesthetics, and common sense. He is also friendly, upbeat, and generally a pleasure to have around. Best of all, unlike so many of his colleagues who work in various construction trades, Moli talks to women. He doesn’t insist on talking to your husband. ... I am definitely keeping American Concrete Construction in mind for future projects."
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+29

Recommended by100%of homeowners
Ryan's Remodeling
4.3(
3
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Sumas, WA and surrounding areas

In business since 2008

Free estimates

"I scheduled the work for early November thinking the job was a three day affair.  We did not have another bathroom so I needed it done as efficiently as possible, we have 900 sq feet so everything was in disorder.  The contractor rescheduled with me, the day before he was supposed to come for the following week. When he did come, he met me at the hardware store to help me choose items, and to get supplies.  He was on time and communicative, and helped me understand the remodel process.    After working to take out the tub, he did not return for the week, did not call or answer my calls or texts,then finally he called, returning on the weekend.
 I felt as if he did good work and did not cut corners and had some integrity about his workmanship. So he went ahead with the second part of the remodel: putting in some new drywall and the ceiling fan and heater.  However, things started to disintegrate, he never came when he said or was late and did not always call. He always had a seemingly legitimate excuse. But in the end a 6-7 maybe 8 day job took over a month!  I ended up finishing the job myself:  painting and putting up new towel racks.
Its a shame, I thought his workmanship good but can't ask him back for the third part of the remodel. It's almost Christmas and I'm painting the bathroom!
"
Recommended by66%of homeowners
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Basement Waterproofing FAQs, answered by experts

Water damage to concrete is often gradual and can take months, if not years, for a concrete structure to be fully destroyed. The process often starts with cracks on the surface, followed by sinking slabs and eventually crumbling cement. Therefore, it is important to repair minor damages early to prevent the situation from worsening.

You’ll need to reseal the foundation every five to 10 years, depending on the sealant you’ve used, the moisture conditions present in and around your home, and the condition of your foundation. Having a foundation inspection conducted before reapplication can help you catch any problems before you begin resealing. Of course, if you notice any new leaks or other moisture problems at any time, it may be necessary to reseal the foundation sooner.

You can DIY basement waterproofing in some ways to help save on the overall costs. If your basement isn’t experiencing a lot of water but is noticeably humid, you can try running a dehumidifier that will pull the excess water out of the air. If you notice water leaking due to outdoor drainage issues, you can add downspout extensions to keep rainwater away from your home. 

However, if the problem is more severe and requires a more extensive solution, it’s best to call a basement waterproofing professional to assess the treatment you need and install waterproofing safeguards properly. Since keeping water out of your basement is important, ensuring this job is done correctly the first time is best.

Preventing water accumulation involves regular inspections, maintaining effective drainage systems, ensuring proper roof maintenance, and taking preventive measures against heavy rainfall or floods.

Crawl spaces are prone to issues caused by excess humidity and improper ventilation, but that doesn’t mean you should avoid buying a house with a crawl space. A home that is encapsulated and well-maintained shouldn’t have any more issues than a slab or basement home.

The Sumas, WA homeowners’ guide to basement waterproofing services

From average costs to expert advice, get all the answers you need to get your job done.