Get matched with top basement waterproofing pros in Sultan, WA

Enter your zip and get matched with up to 5 pros

Need a pro for your basement waterproofing project in Sultan, WA?

Select your specific project to find the pro for you.

TRUSTED BY SULTAN, WA HOMEOWNERS

4.7
Average homeowner rating
20
Verified basement waterproofing services reviews

Verified Reviews for Basement Waterproofing pros in Sultan, WA

*The Angi rating for Basement Waterproofing companies in Sultan, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.

*The HomeAdvisor rating for Basement Waterproofing companies in Sultan, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.

Last update on March 15, 2025

Reviewed in March 2025
Came to the house and walked through my semi finished basement and we discussed the scope of the project and and he came up with ideas about how to provide proper egress for basements and we went over finishes and options for fixtures. Very detailed estimate and schedule was discussed so there...
WJPJR2, LLC
Request a quote
Reviewed in February 2022
Our basement had water damage from a sump pump failure. Custom Pro came out right away to begin the mitigation. Max was friendly, professional and clearly explained the process. He salvaged the carpet and did minimal cutting out of drywall. Arkady and Vitaliy answered all of my questions and...
Custom Pro Restoration, Inc.
Request a quote
Reviewed in May 2019
Jeff and his crew game me a home. I recently moved to Washington from Minnesota and was living in a rental. Jeff remodeled a daylight basement in my son's home for me, he was creative, kind, listened to my ideas and even added some extra touches that made the remodel special. All I can say is...
Simmons Construction
Request a quote
Reviewed in May 2019
We moved into a new home where a deck was built by the builder on our second floor above our concrete patio. On top of this, the builder did NOT frame above the deck, so in the rainy months, we had no outside space since water would go right through the deck to our patio below. I contacted a...
AA Defined Exteriors
Request a quote
Reviewed in July 2017
Though a bit pricey I was very pleased with the results. The new pump doesn't rattle my plumbing when it goes off and everything now drains as it should without backing up into my basement. Have recommended Kirk Thompsen to my friends.
South West Plumbing, Heating, Air, & Electric
Request a quote
Reviewed in December 2016
Was very satisfied with the prompt professional service, I would recommend waterproof windshields to my friends and family.
Rock Hard Windshields
Request a quote
Reviewed in June 2016
Yesterday We had sewage backing up into the basement bath through toilet and shower. When I called Roto-Rooter I was advised that before they come out we should make sure it is not a septic tank issue. When I checked, the tank was full. I was able to get it pumped out this morning. The sewage...
Roto-Rooter Plumbing & Water Cleanup
Request a quote
Reviewed in September 2015
Paul responded to our inquiry and showed up right on time to review our basement flooding situation. We had some water in the basement during a couple of recent downpours. Paul was very easy to work with and practical in quick suggestions, giving us some no-cost and low-cost options. He...
Allied Waterproofing & Drainage, Inc.
Request a quote
Reviewed in December 2014
I had had an issue with my basement smelling of mold and since I was trying to sell my house I knew this was going to be a big issue for some buyers. A "mold expert" had visited the house and told me I needed to dig an 8foot deep trench along most of my back wall which would have cost probably...
Wu Construction
Request a quote
Reviewed in November 2013
My wife and I purchased a mid sixties daylight rambler and were in the process of doing a very extensive remodel. As part of the remodel we had to replace all of the plumbing, including the drain lines under the basement concrete slab. We were moving the septic outfall to the opposite side of...
Go Long Plumbing LLC
Request a quote

Find Basement waterproofing pros in Sultan

John's Waterproofing Co.

4.2(

)

Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Sultan, WA and surrounding areas

Approved

In business since 1974

Free estimates

Warranties offered

"Corey and David of John's Waterproofing Company took our project and had a commercial grade gas water heater installed and running in place of our old one the same day they received our call for service. Thank you John's Waterproofing."

Response time11 hrs

Response rate94%

42 neighbors recently requested a quote

Request Quote

Insulation Co., LLC - Removal & Clean Outs

4.9(

226

)

Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Sultan, WA and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

"They insulated our garage. They did a great job. Timely and they did a great job cleaning up after they were done."

+46

Response time5 hrs

Recommended by49%of homeowners

Request Quote

Andy Construction LLC

4.9(

)

Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Sultan, WA and surrounding areas

Approved

In business since 2011

Free estimates

Warranties offered

"I called Andy after discovering a basement leak. Andy after a few photos immediately knew the source and with some phone guidance we were able to solve the problem. He even refused my offer to pay"

Response time8 hrs

3 neighbors recently requested a quote

Recommended by95%of homeowners

Request Quote

Near Me Roofing Company

5.0(

)

Basement Drainage Channels - Repair

Serving Sultan, 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

Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Sultan, WA and surrounding areas

Approved

In business since 1983

Free estimates

Emergency services offered

"Greg and his team were wonderful to work with from the start. It's going to improve our house and our life to stop having water in the basement everytime it rains. We can finish our basement and actually use the space now! Thanks for being so easy to work with and delivering a quality drain system."

+11

Response time10 mins

Response rate100%

42 neighbors recently requested a quote

Request Quote

Iconiq Construction, LLC

4.9(

)

Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Sultan, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Warranties offered

"Iconiq Construction Service did an amazing job finishing our basement. The team was professional, efficient, and detail-oriented. The results were outstanding, creating a functional and beautiful space. Highly recommend their services!"

Response time1 day

Response rate94%

5 neighbors recently requested a quote

Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Sultan, WA and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 2006

Free estimates

Emergency services offered

"Punctual and very communicative I am very happy how my project turned out! No more water in my basement!!"

+15

59 neighbors recently requested a quote

Recommended by64%of homeowners

Request Quote

Harts Plumbers, Electricians, & HVAC Technicians

4.6(

1,230

)

Basement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Sultan, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2013

Emergency services offered

Warranties offered

"This company is so professional and kind. Anthony, the rep who came to do the estimate on a basement kitchen sink and shower installation was so knowledgeable. and patient, My elderly mother has moved in and is making our finished basement her new home, he addressed all her concerns and helped to make some smart choices. Lexi, the phone coordinator was lovely as well."

Response time50 mins

Response rate100%

21 neighbors recently requested a quote

Request Quote

SeaTown Electric Heating and Air

4.7(

1,637

)

Basement Drainage Channels - Install

Serving Sultan, WA and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"Had wiring replaced throughout home. Great service with minimal drywall damage"

+26

Response time1 day

10 neighbors recently requested a quote

Recommended by93%of homeowners

Basement Drainage Channels - Install

Serving Sultan, WA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"They did an excellent job and everything was done on time and with exactness. They work very professionally but they also had fun as they worked. The final price ended up being right on with what the estimated price was. They provided all the materials and they cleaned up when they were finished and didn’t leave a mess behind for us to have to clean up. They listened to us and to what our desires were and then they explained the different options that we had. They were very respectful not only to us but to our property. They showed up on time when they said they would be here and the project was completed when they estimated it would be done. We would definitely recommend them for any plumbing job you have, we will call them for any future needs we have."

1 neighbors recently requested a quote

Recommended by85%of homeowners

Request Quote

...

Showing 1-10 of 81

Basement Waterproofing questions, answered by experts

Yes, basement insulation needs a vapor barrier due to its susceptibility to moisture seeping in from the outside of the house. You should install a moisture barrier before you install insulation or purchase insulation that comes prebuilt with a moisture barrier to avoid water damage in your insulation and costly mold and water remediation expenses.

Access to commercial-grade products and equipment, ensuring thorough coverage and long-lasting protection.

Unfortunately, mold can grow pretty much anywhere, on any kind of surface. However, you’re most likely to see it in damp areas like basements or bathrooms, as well as anywhere there has been a water leak. Consult a local mold specialist to determine if certain areas of your home are prone to mold based on climate and other factors.

Venting the crawl space can be a good alternative to encapsulation if you live in a dry climate and the moisture problem isn’t severe. You could also try a dehumidifier or install a vapor barrier on the floor, leaving the walls exposed. A new drainage system may eliminate the moisture problem if it is not caused by humidity.

Proper basement ventilation is very effective at reducing humidity. Without enough ventilation, your basement is prone to mold and moisture damage. Your basement should have as much natural ventilation via windows and doors as possible, and if your budget allows, you should also consider installing an ERV system to keep basement humidity levels at bay.

The Sultan, WA homeowners’ guide to basement waterproofing services

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

See all articles

Scott Dylan Westerlund
•
Oct 24, 2025Oct 24, 2025
Basement Waterproofing Cost in Seattle [2026 Data]
Need to fix basement water problems or safeguard your home in Seattle, WA from damage in the future? Use this basement waterproofing cost guide to budget appropriately.
Angi
•
Jun 10, 2026Jun 10, 2026
How Much Does Basement Remodel Cost in Seattle, WA? [2026 Data]
Find out the average basement remodel cost in Seattle, WA. Learn what you can expect to pay for local basement finishing services and plan your budget today.
Kelly Weimert
•
May 13, 2026May 13, 2026
How Much Does Crawl Space Encapsulation Cost in Seattle, WA? [2026 Data]
A variety of factors can affect your total crawl space encapsulation cost in Seattle, WA. Here’s a breakdown of the cost of this project, whether you hire a pro or DIY.
Dan Simms
•
Jul 8, 2026Jul 8, 2026
How to Waterproof a Basement Like a Pro
Dealing with a damp basement? Follow these steps for DIY basement waterproofing to keep water and moisture out and boost your home’s energy efficiency.
Dan Simms
•
Jul 9, 2026Jul 9, 2026
What Is Basement Waterproofing and How Does It Work?
Struggling with a damp basement? Learn about basement waterproofing and how these tips can help keep your basement safe from the elements.
Deirdre Sullivan
•
Jul 20, 2026Jul 20, 2026
How to Keep Your Basement Dry and Get Rid of Moisture
Can’t seem to get rid of the moisture and mold in your basement? Learn why basements tend to hold moisture and how to get rid of moisture in the basement.