Top-rated basement waterproofing pros.

Get matched with top basement waterproofing pros in Longview, WA

Enter your zip and get matched with up to 5 pros

Find Basement waterproofing pros in Longview

Avatar for John's Waterproofing
John's Waterproofing
4.3(
251
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Longview, WA and surrounding areas

Approved

In business since 1974

Free estimates

Warranties offered

"From the first visit to my home from Sean for an estimate, to the crew that arrived to do the project I was impressed. Everyone was extremely professional. The crew arrived on time, the crew leader introduced me to the rest of the crew and explained how they would proceed with the project. They protected the work spaces with plastic from my garage to the crawl space opening in side my closet. They went to work and kept me informed about the progress. The whole crew worked very efficiently and got the project done in one day. They left work area spotless when they were done. I would highly recommend this company for any waterproofing project!!"
Trim around fireplace was removed and mold found along the base
Fiberglass was drooping away from the home, removing its insulation value
Fiberglass Insulation was falling down in clumps from water weight
This window had been upgraded and given trim to give a clean and finished look
Re removed the below-grade sections of the wall and waterproofed with ThermalDry Radiant vapor barrier and installed a drain system around the interior perimeter

+41

Response time9 hrs
Response rate100%
19 neighbors recently requested a quote
Avatar for Pacific Waterproofing & Foundation Solutions, LLC
Pacific Waterproofing & Foundation Solutions, LLC
4.9(
8
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Longview, WA and surrounding areas

Approved

In business since 2012

Free estimates

Warranties offered

"Very impressed with Darren: his work ethic, thoroughness of the work, cleanliness of the job site when the job was finished. He arrived when he said he would and stopped by when he was done for the day to let me know he was leaving. I certainly would recommend Pacific Waterproofing, LLC."
Response time2 days
10 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Legacy Plumbing and Excavation, LLC
Legacy Plumbing and Excavation, LLC
4.5(
74
)
Basement Drainage Channels - Install

Serving Longview, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"James from Legacy Plumbing and Escavation was professional and friendly did an a awesome job in a timely manner in repairing a leaky shower in a home we had just purchased. Highly reccomend James and Legacy Plumbing and Escavation 🤙"
Sewer Repair
Excavation & Sewer
Response time9 hrs
Response rate95%
694 neighbors recently requested a quote
Avatar for Foundry Construction LLC
Foundry Construction LLC
5.0(
7
)
Basement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Longview, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Emergency services offered

Warranties offered

"Foundry Construction was top notch. The owner Brylan is professional, courteous and on time. His work was fantastic and he made sure I was completely satisfied. The price and speed of completion left me very satisfied. I highly recommend Foundry Construction."
Driveway drainage
Driveway drainage
Driveway drainage
Driveway drainage
Additional Photos

+3

4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Northern Utilities
Northern Utilities
5.0(
5
)
Basement Drainage Channels - Install

Serving Longview, WA and surrounding areas

Approved

In business since 2025

Free estimates

Small jobs welcome

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!\n

Water line replacement
Water line replacement
Water line replacement
Water line replacement
Water line replacement

+18

4 neighbors recently requested a quote
Avatar for Service Pro Plumbing
Service Pro Plumbing
5.0(
5
)
Basement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Longview, WA and surrounding areas

Approved

In business since 2023

Emergency services offered

Small jobs welcome

Welcome to Service Pro Plumbing, where family values meet expert plumbing solutions. As a family-owned and operated business, we are committed to offering a personalized, welcoming, and transparent experience for each of our customers. Our skilled professionals handle all your plumbing needs with precision and care, from routine faucet installations to complex sewer line replacements. We ensure every job is completed with the utmost attention to detail, minimizing disruption to your daily life.\n\nProudly serving Vancouver, Camas, Longview, and the surrounding areas, we specialize in emergency plumbing services for both residential and commercial properties. For reliable plumbing installation and repair, trust Service Pro Plumbing. As your local Vancouver, WA plumbing company, we are dedicated to the safety and efficiency of your plumbing system. Our expert team will assess your needs and provide cost-effective solutions, delivering quality results you can rely on.

Gallery
Gallery
Gallery
Gallery
Gallery

+11

Response time6 hrs
Response rate100%
102 neighbors recently requested a quote
Avatar for Wrangler Specialty Const
Wrangler Specialty Const
5.0(
4
)
Basement Drainage Channels - Install

Serving Longview, WA and surrounding areas

Approved

In business since 2020

Free estimates

Small jobs welcome

"We had a great experience working with Wrangler Specialty Construction for our roof structure repair. Jeff and Coleman were the utmost professionals from start to finish. The team was honest, extremely hardworking, knowledgeable, and easy to work with. They explained the repairs clearly, kept us informed throughout the process, and completed the work with excellent attention to detail while ensuring everything was completed in accordance with the engineered plans. It's clear they take pride in the quality of their workmanship, and we feel confident knowing our home's roof structure has been repaired correctly. We highly recommend Wrangler Specialty Construction to anyone looking for a trustworthy, skilled contractor for structural repairs or other home improvement projects. We will definitely be using them again for future projects!"
Lean-To Shed
Custom Deck
Response time8 hrs
Response rate100%
5 neighbors recently requested a quote
Avatar for Foundations First Northwest, LLC
Foundations First Northwest, LLC
5.0(
1
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Longview, WA and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

"I contacted Foundations First NorthWest and a couple of other contractors when an inspection revealed some foundation settling and crawl space damage. I chose Foundations First to make the repairs because they included more work, and at a lower price, than their competitors. I can't say enough about how professional everyone at Foundations First NorthWest was, from the first meeting with the sales rep to the constant communication with office staff throughout the project. Every step was completed without a hitch -- getting permits, engineering, the repair work and county inspections. The work crews worked quickly and efficiently on both the installation of stabilizing foundation piers, and also on the crawl space repairs. And they left the work areas in a very clean condition. I highly recommend Foundations First!"
Sump Pump
High Traffic Drain
Trench Drain
Rain Drain Extension
Basecrete

+13

Response time1 day
6 neighbors recently requested a quote
Avatar for J.S. Chappell LLC
J.S. Chappell LLC
New to Angi
Basement Drainage Channels - Install

Serving Longview, WA and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

We offer a full service one stop shop… From Dust to drapes we cover everything in between. We are leaders in Residential New Construction and Home Renovations, New Development, Decks, Sheds, Shops, Additions. Our services also include our Commercial Remodeling side, no job too big or to small we’re here to be a pillar in our community and grow in the right direction. \n\nWe take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Jesse Chappell
First Coat
New Look
Sand
Remodel

+29

Response time2 days
Response rate86%
Showing 1-10 of 43
Basement Waterproofing questions, answered by experts

In Longview, homeowners are increasingly choosing interior French drains paired with sump pumps for robust foundation drainage. Full-perimeter vapor barriers and wall encapsulation are trending, especially for managing persistent moisture. Smart water monitoring systems that send alerts to your phone are gaining popularity. Many also opt for integrated dehumidifiers to maintain optimal humidity, ensuring long-term moisture control and protecting finished basement spaces.

Helpful?

If your Longview home shows signs like persistent dampness, visible foundation cracks, or musty odors, it likely needs basement waterproofing. Homes with finished basements, those built on clay soil, or properties near rivers are at higher risk for moisture issues. Elevated humidity or past water intrusion also indicate the need for improved moisture control and foundation drainage solutions.

Helpful?

In Longview’s damp climate, keep a moisture meter to monitor humidity, and a wet/dry vacuum for quick water removal. Hydraulic cement is useful for sealing minor cracks, while heavy-duty plastic sheeting can serve as a temporary vapor barrier. Maintain a backup battery for your sump pump and gutter cleaning tools to ensure proper exterior drainage. Mold-resistant sprays and scrub brushes help prevent mildew buildup.

Helpful?

For Longview homes, consider the high water table and clay-heavy soil, which can intensify hydrostatic pressure on foundations. Plan waterproofing projects during drier months to minimize delays. Assess your property’s drainage patterns and proximity to rivers or low-lying areas, as these increase flood risk. Check for any local requirements related to seismic safety when modifying foundation drainage or waterproofing systems.

Helpful?

In Longview, be cautious if a contractor skips a thorough inspection or offers a one-size-fits-all solution without addressing your home’s unique foundation drainage needs. Quotes lacking detailed breakdowns of labor and materials, or missing clear warranty terms, are warning signs. Also, avoid professionals who can’t provide recent local references or who downplay the importance of moisture control in your specific area.

Helpful?

The Longview, WA homeowners’ guide to basement waterproofing services

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