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TRUSTED BY CORNELIUS, OR HOMEOWNERS

  • Average homeowner rating star icon4.2
    Average homeowner rating
  • Verified reviews icon66
    Verified basement waterproofing services reviews

Find Basement waterproofing pros in Cornelius

Avatar for Better Basements and Waterproofing
Better Basements and Waterproofing
5.0(
10
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Cornelius, OR and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"Dylan Milroy went in and cleaned out the crawlspace put down plastic and dug a french drain and redirected all the downspouts so that the rain and we had now more water being drained. He is super easy to work honest he follows up to see if you are satisfied with his work.. I recommend him to everyone."
12mil vapor barrier
12mil vapor barrier
Standard Vapor Barrier
Exterior Drainage
Exterior Drainage

+3

3 neighbors recently requested a quote
Recommended by50%of homeowners
Avatar for Groundworks
Groundworks
4.6(
915
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Cornelius, OR and surrounding areas

Approved (Corporate)

In business since 2021

Free estimates

Warranties offered

Groundworks is the North America's leading and fastest-growing foundation repair and water management solutions provider. Groundworks is a vertically integrated company with its own manufacturing operations and a world-class software solution, allowing us to serve our customers more effectively. From the first phone call to the annual maintenance offered, our customers have peace of mind knowing we're there with one mission to repair, protect and improve their home. For state licenses visit Groundworks.com/licensing

Basement
Basement
Basement
Concrete
Concrete

+20

6 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for John's Waterproofing Co.
John's Waterproofing Co.
4.2(
72
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Cornelius, OR and surrounding areas

Approved (Corporate)

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."
New Home Encapsulation
SilverGlo Insulation
CleanSpace
SaniDry Dehumidifier
Puddling in Basement

+7

Response time11 hrs
Response rate94%
38 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 Cornelius, OR 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 D & F Plumbing, Heating and Cooling
D & F Plumbing, Heating and Cooling
4.2(
513
)
Basement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Cornelius, OR and surrounding areas

Approved (Corporate)

In business since 1927

Emergency services offered

Warranties offered

"Our shower was leaking into the basement. Azzi was able to come out the same day to diagnose the problem and schedule service. He was professional, friendly, tidy, and completed the substantial work in one day. He explained everything in terms we could understand. His work was excellent! We feel that we received quality and long-lasting solutions to our plumbing problems. We can't recommend D & F Plumbing enough. Ask for Azzi!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+18

1 neighbors recently requested a quote
Recommended by79%of homeowners
Avatar for 3 Mountains Plumbing
3 Mountains Plumbing
4.2(
653
)
Basement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Cornelius, OR and surrounding areas

Approved

In business since 2000

Emergency services offered

Warranties offered

"Jeff Morris of 3 Mountains Plumbing was great to work withâ  professional, clearly explained answers to my questions, friendly, and competent to at least my eyes. I will continue to use the services of 3 Mountains Home Services."
The 3MP Team (Circa 2017)
Bill Kerrigan
Alex Grabbing a Photo
Rolling Through Lake Oswego
Random Patch Photo

+103

Response time1 day
341 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for 3POINT3R CONSTRUCTION LLC
3POINT3R CONSTRUCTION LLC
5.0(
7
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Cornelius, OR and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"Martin and his crew tore up a paver patio and partial lawn and installed a beautiful patio with pavers and river rock. On time and worked quickly! I was really happy with how I was treated and the quality of work they did. It was a small project which I sometimes have a hard time finding people for and Martin was eager and made me feel like it was worth his time."
Old Vanity
Old shower
New flooring
Bathroom Remodel
Added two shower niches

+10

Response time2 days
2 neighbors recently requested a quote
Recommended by85%of homeowners
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Basement Waterproofing questions, answered by experts

The primary downside to crawl space encapsulation is the high cost, which can be several thousand dollars. Additionally, the process can make future repairs more complicated by limiting access to plumbing and electrical wiring within the crawl space. Encapsulation also requires sealing off any vents, which can be a disadvantage for home designs that benefit from the airflow they provide. It's recommended to consult with a crawl space contractor to determine if the benefits outweigh these potential drawbacks for your specific home.

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

Installing a bathroom in a basement isn’t a project for most homeowners. Many parts—plumbing, electricity, and carpentry—go into this project, each requiring expert-level knowledge and tools. One miscalculation can lead to very expensive repairs. Plus, some homeowner’s insurance might not pay for damages caused by a homeowner DIYing this project. You can protect yourself by allowing the pros to complete this job for you. 

Periodic inspections and addressing drainage issues prevent further damage.

Several types of insulation are effective for crawl spaces, with spray foam and rigid foam boards being two of the best options. Closed-cell spray foam insulation is a strong choice because it effectively repels moisture, resists biological growth, seals the air, and provides excellent thermal protection, especially in hard-to-reach areas. Rigid foam insulation boards are another excellent material as they insulate well, resist water damage, and will not settle over time like fiberglass or cellulose.

The Cornelius, OR homeowners’ guide to basement waterproofing services

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