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Products & Services
Basement Waterproofing
Basement Dehumidifiers
Basement Sealing
Basement Seepage Solutions
Basement Wall Repair
Flood Vents
Drain Tile Installation
Dry Basement Systems
Exterior Waterproofing
Flooded Basement Repair
Foundation Waterproofing
French Drain Installation
Interior Waterproofing
Leaky Basement Repair
Sump Pump Drainage
Sump Pump Installation
Sump Pump Repair
Sump Pump Battery Backup
Wet Basement Solutions
Basement Insulation
Basement Crack Repair
Basement Wall Cracks


Crawl Space Repair
Crawl Space Access Doors
Crawl Space Dehumidifier
Crawl Space Drainage
Crawl Space Encapsulation
Crawl Space Insulation
Crawl Space Liner
Crawl Space Moisture Barrier
Crawl Space Moisture Control
Crawl Space Mold Prevention
Crawl Space Sealing
Crawl Space Sump Pump
Crawl Space Vapor Barrier
Crawl Space Ventilation
Crawl Space Waterproofing
Crawl Space Excavation


Basement Flooring Systems



Basement Remodeling
Basement Remodeling Plans
Basement Renovations
Basement Refinishing
Basement Subfloor
Basement Wall Panels
Thermaldry Basement Flooring


Basement Design
Basement Ideas
Basement Remodeling Ideas
Basement Ceiling Ideas
Basement Floor Plans
Basement Flooring Ideas


Seismic/Earthquake Retrofitting
Before and After Pictures from Corvallis
Super Sump in Corvallis, OR Basement

Super Sump in Corvallis, OR Basement

Before After
Super Sump in Corvallis, OR Basement Super Sump in Corvallis, OR Basement

This homeowner had a Super Sump sump pump installed to remove the excess moisture in her crawlspace. The Super Sump can remove up to 2,650 gallons of water per hour while working quietly and smoothly.

CleanSpace Cleanup in Corvallis Oregon

CleanSpace Cleanup in Corvallis Oregon

Before After
CleanSpace Cleanup in Corvallis Oregon CleanSpace Cleanup in Corvallis Oregon

This new homeowner found out that an inspection had been done at their home and requested that we come complete the work now that they owned the home. Our team removed the fallen insulation, cleaned the debris, and encapsulated the air to make a beautiful space and provide cleaner air for their home and reduced heating and cooling bills. 

Company Awards
Best of Beaverton Plumbers - 2021
The goal is to connect people with the best local experts. Expertise scored Beaverton Plumbers on more than 25 variables... [Read more]
Ten Years with Home Advisor
Currently an active member of the Homeadvisor network 10 Year anniversary of initial Screening & Approval No homeowner complaints in the last... [Read more]
Elite Service Professional
Have a minimum of five reviews with a 5-star rating Overall customer service rating of 4.5 or better No homeowner complaints in... [Read more]
More Awards

Your Leading Corvallis, OR Crawl Space & Leaky Basement Repair Contractor

Happy Customers Surrounding Corvallis, OR
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Reviews From Corvallis
Testimonials From Corvallis
Manuel H and crew finished job yesterday.
Testimonial by Nicholas Z. from Corvallis, OR

Basement Waterproofing & Crawl Space Repair in Corvallis, Oregon

Do you have water in the basement? Is your crawl space damp? This leads to mold, rot, musty odors, and structural issues. It also leads to a reoccurring headache for you. Luckily, our trained experts are available to permanently fix the problem.

We will properly install a hidden drainage system in your Corvallis basement and completely encapsulate your crawl space with CleanSpace vapor barrier. We are here to solve the problem for you.

Why Choose Us?
  • Lifetime Warranty on all Perimeter Waterproofing Systems
  • 25-year Warranty on Crawl Space Encapsulation Systems
  • Sump Pump Installation, Repair & Replacement
  • Basement, Crawl Space & Spray Foam Insulation
  • Basement Egress Windows
  • Flood Vents & Drainage Systems
  • Crawl Space & Basement Dehumidifiers
  • Crawl Space Excavation
  • Hundreds of Satisfied Customers

Basement Remodeling in Corvallis, OR

Waterproofing your basement prevents outside water from coming in but what if a pipe bursts or the water heater leaks inside the home. A newly remodeled basement done by your average contractor will mold and rot if there is an internal leak. You'll have to tear out your new basement! We fix this issue.

Our Products Include:
  • Waterproof, washable, insulated walls           
  • Mold-Resistant, No-Sag suspended ceiling
  • Modular carpet, tile & faux wood flooring

  • Energy-efficient, double-paned basement windows
  • Attractive Sunhouse basement window wells
  • French, bifold, louvre & six-paneled steel doors
Unlike the average Corvallis contractor we use completely inorganic, waterproof materials. Even if the basement floods your walls and floors will not be damaged by the water. These waterproof products are patented and are built to create an attractive basement that lasts a lifetime.

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Earthquake & Seismic Retrofitting in Corvallis

In Corvallis, earthquake risk is a reality. That is why it is critical to have your home properly reinforced and prepared for any seismic event. At John's Waterproofing, we provide seismic retrofitting services on your home or business using metal connectors and other reinforcing methods and materials. The goal is to counteract racking, sliding, and overturning, the 3 major earthquake-induced forces that can damage or ruin your structure.

For a FREE no-obligation written estimate in Corvallis, OR, please click below and John's Waterproofing will contact you shortly.

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Job Stories From Corvallis, OR
Crawl Space, Corvallis, OR

Malcolm had an appraisal done on his home and was displeased to find out that there was some standing water on the vapor barrier in his crawl space. He had put in a newer sump pump so he was pretty disappointed when he found out it wasn't working as well as it should be. That's where John's came in! Our team of waterproofing professionals came right out and took care of the situation. The crawl space was cleaned out, the damp insulation was removed. We took care of the sump pump situation and got it installed to where it needed to be and Malcolm now has a dry, clean crawl space that passes inspections and functions to the best of its ability. 

Here at John's Waterproofing Company, we are always happy to help! 

Thermal Dry Flooring in Corvallis, OR Combination Basement

These homeowners had water leaking into their basement and wanted to stop the leakage and prevent further damage. Our inspector, Jack suggested our basement finishing systems because their basement was already partially finished. Of our systems, Allen and Meredith chose our Canyon Beige Thermal Dry tiles and Everlast Wall Panels.


Harry and his team swiftly set out to waterproof and finish Allen and Meredith's basement. They installed the Everlast Wall panels, which are neutral-colored wall boards that are immune to mold and moisture damage. We also placed in our Thermal Dry tiles which are beautiful, durable, maintenance-free basement floor tiles. They snap together and come in a variety of colors. The bottom of Thermal-Dry flooring has raised pegs that creates an air space and keeps water vapor from getting trapped under finished floors.


Allen and Meredith are very satisfied with their new finished basement and look forward to no longer having water issues.

Thermal Dry Flooring in Corvallis, OR Combination Basement - Photo 1Thermal Dry Flooring in Corvallis, OR Combination Basement - Photo 2
Work Requests From Corvallis, OR
Project Location: Corvallis, OR
I need a liner placed in my crawl space.
Project Location: Corvallis, OR
House inspector says our vapor barrier is in marginal condition, with exposed earth in multiple spots
Project Location: Corvallis, OR
Two cracks in basement concrete wall, leaking water with heavy rains. Would like to know repair options and estimate.
Project Location: Corvallis, OR
During heavy rain, water is in the crawl space. Not very much and it drains out after a short bit. Vapor barrier has some tears.
Project Location: Corvallis, OR
We have a lot of standing water under our house. We need a sump pump installed and run the drain to the street. We also need repairs to the vapor barrier and any other damage to the underside of the house.
Project Location: Corvallis, OR
Hi. We have a small (800 sq ft) house in Corvallis that is in need of crawlspace repairs. Before we can get anything else done, we need to have the space excavated. Can you tell me your rates for a crawlspace dig out? Thanks, Martin
Project Location: Corvallis, OR
Sump pump optimization and falling insulation are the primary issues.
Project Location: Corvallis, OR
Basement sump pump area has SO MUCH water coming in. Why? We need help with that!
Project Location: Corvallis, OR
Finished framing a new house, but there is still water in the crawlspace that I'd like to address before we continue. I'd like to have someone stop by to take a look.
Project Location: Corvallis, OR
I'm interested in crawlspace encapsulation.
Project Location: Corvallis, OR
We have a basement block wall that needs waterproofing
Project Location: Corvallis, OR
New sump-pump with drainage to the street. The current drainage is not working well. Crawl space insulation and waterproofing.
Project Location: Corvallis, OR
We are interested in the cost of doing spray foam insulation in our crawlspace. It's about 1000 sq ft and we would want 2" of foam. Can you give me a ballpark estimate for that, or do you need to see the space?
Project Location: Corvallis, OR
Basement in my rental get water in it on rainy days.
Project Location: Corvallis, OR
Too much water collecting under the house(manufactured home).
Project Location: Corvallis, OR
Clean-up and provide long-term water protection for home crawl space.
Project Location: Corvallis, OR
I have water in my crawl space, which is worse after heavy rain. There is mold in one corner of the crawl space
Project Location: Corvallis, OR
Interested in making my crawlspace into a conditioned space.
Project Location: Corvallis, OR
Water intrusion in the crawlspace of my newly purchased house. The yard has a faulty slope so I expect the problem to worsen in the winter.
Project Location: Corvallis, OR
I need a quote for a vapor barrier replacement on our house. Wondering if you can give me a quote?
Serving the following Corvallis, OR zip codes
97330, 97331, 97333, 97339
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