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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 MTU Services LLC
MTU Services LLC
5.0(
5
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Sumas, WA and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"went very well. service was prompt, work was completed efficiently, thoroughly, and timely. everything was explained beforehand during bid in such a way that even someone who knows nothing about the work involved could understand. honest people who know what they are doing. treated our residents with respect. and help to maintain a safe path for them to travel through our main entrance. if you need the services they offer these are the ones to do it. fair pricing as well. only ones I found that actually guarantee the work they do for this type of job."
Elevator pit waterproofing and sealing
Piers under an existing home
Piers under an existing homes middle wall
Solutions/Answers
Response time1 day
Response rate100%
4 neighbors recently requested a quote
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

"From the minute they got out of the truck to check our project, to give us a bid we knew they were the company we would hire. They seemed to know what we wanted by way of design and finish, before we spoke. Where other companies had said flat out “We won’t do this.” “Too much work removing old concrete.” Poor access.” Moli said, “Yes, this old concrete gotta go. But, it’s no problem. We bust it up. We take it out.” At the end of the first day all of the old concrete had been removed and taken away. At the end of day two all the forms were set. Day three was rebar and detail work making all ready for the pour. Day four The concrete was poured stamped and finished. On day five everything was picked up cleaned up and they were gone. These are good people. They do good work and they are as honest as the day is long."
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+29

Recommended by100%of homeowners
Form To Function Landscaping LLC
4.4(
16
)
Basement Drainage Channels - Install

Serving Sumas, WA and surrounding areas

In business since 2009

Free estimates

Emergency services offered

"I kind of questioned the cost after they did the job. What they actually did here looks pretty good. I just had surgery that time so I was in bed when they came out. They did it under 40 hours and did good work but they handed me another bill that was triple the price. The labor was okay but within that labor, they planted things for me. I had asked them to make it easy to maintain but they never discussed anything with me. I’m sure they upped the cost for the plants quite a bit. I don’t even know what plants they are. They did put in some bricks and they did a good job on that. I told them that I wanted some grooves leveled out in my yard and I realized afterwards that there were still some tracks in the yard. It was covered by grass but I pointed out where they were."
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Arlington
Camano Island
Bothell

+25

Recommended by86%of homeowners
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Basement Waterproofing FAQs, answered by experts

Roughing in and connecting utilities are the hardest parts of finishing a basement, and they’re the parts we typically don’t recommend doing as a DIY project. Unfortunately, your finishing timeline can be extended by weeks while you wait for contractors and inspectors to install electrical wiring, plumbing lines, and heating/cooling equipment and carry out inspections.

A plastic vapor barrier should completely cover your basement to prevent water from penetrating through the walls. This typically goes before installing insulation to prevent moisture from building up and becoming trapped on the inside of your insulation, where it can collect and lead to mold damage. Installing insulation after the vapor barrier allows for any moisture to exit the walls for better ventilation.

Thankfully, you do have a few sump pump backup options in case it fails. One option is a battery-powered backup sump pump. Another option is using a portable backup generator as a power supply for your sump pump. Unlike a battery-powered backup which has limited power, a generator can run around the clock for as long as you need it. 

Or you can opt for a water-powered backup pump, which uses your home’s water supply as a source of power. However, this may not be the best option if you find your house frequently has low water pressure.

Below-ground shelters are the best in terms of durability, but there is a risk of flooding and obstruction. Modern technology and rigorous construction requirements make above-ground shelters a better option for accessibility, safety, and, usually, your budget. They may not have the same aesthetic appeal, but many of their features make above-ground shelters a better option. 

You should take care of any sign of water in your basement, whether it’s dampness after heavy rain or puddles of water on the floor. Besides potentially causing a health hazard, the moisture can damage your home’s structure and foundation. Furthermore, mold can grow quickly and spread throughout the rest of your home. With mold remediation costs ranging between $1,200 and $3,400, it’s best to avoid mold issues by fixing the leak.

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.