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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 Finishing
Basement Finishing Ideas
Basement Finishing Plans
Basement Finishing Systems
Basement Flooring Systems
Basement Wall Finishing


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 Finishing 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
Innovation and Excellence Award
We just got this email! We have now reviewed all of the information on the companies and individuals taking part... [Read more]
2019 Build Awards- Outstanding Service in Waterproofing
We are delighted to announce that John's Waterproofing Company are recipients within the 2019 BUILD Awards! Build Magazine's first program... [Read more]
The 2017 Impact Award
We received the Impact award this year (2017) at the annual basement system dealer’s convention. This award means so much... [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 Finishing & 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 finished 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 finished 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.

Click for a FREE Estimate!

Plumbing services & emergency repairs

Does your home have dirty drains, a clogged toilet, a burst pipe, or other plumbing issues? John's Waterproofing can help with these issues and more. We offer fast and efficient plumbing solutions.

Our plumbing services:
  • Emergency repair & pump-out services
  • Residential plumbing
  • Drain cleaning
  • Sump pumps & sewer ejection pumps
  • Frozen & burst pipe repairs
  • Kitchen, bathroom & laundry plumbing
  • Boiler installation & replacement

We proudly serve Corvallis, OR and areas nearby. Schedule a free plumbing repair estimate to learn more.

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
Vicinity of in Corvallis
Estimate to repair/replace crawlspace insulation and moisture barrier. Estimate for seismic retrofit.
Vicinity of NW Elmwood Dr in Corvallis
I am interested in seismic retrofit of my home's original 1965 foundation. I remodeled the house in 2017. Also I am interested in sealing up the foundation from groundwater and to improve the drainage system. I would like a free inspection and a estimate to do the work.
Vicinity of in Corvallis
I'm looking to retrofit my house for seismic and also looking to repair the moisture barrier in the crawl space.
Vicinity of NE Sherwood Pl. in Corvallis
I need an estimate to waterproof my crawl space and install a sump pump if necessary.
Vicinity of NW Conifer Blvd in Corvallis
Our are looking to mitigate moisture in our crawlspace. At the minimum we know that our vapor barrier needs to be replaced and current vents are in poor condition. Possible drainage improvement needed.
Vicinity of NE Garden Ave in Corvallis
Musty basement
Vicinity of in Corvallis
I have some water coming in through the Garage door. I was hoping to get a quote for installing a trench drain in the driveway in front of the door
Vicinity of NW Elder St in Corvallis
We had a bib leak on outside of house, it's fixed. It was leaking into the crawl space. Still smells. We need it cleaned up under house. Thanks
Vicinity of Nw Poppy Drive in Corvallis
Was told when I purchased the house 7 years ago I should get the vapor barrier replaced as it was torn in sections
Vicinity of SW A Avenue in Corvallis
Digging up exterior wall to fix leaks into finished basement
Vicinity of SW Brooklane Drive, Corvallis in Corvallis
Most of our crawl space was properly dug out, but there is an 8' area that is too close to the floor, and that area is right underneath our kitchen water pipes. I need that 8' long area dug out a couple feet down and about 1' wide, so I can insulate the pipes. If you do free inspections, I would be interested in having our crawl space evaluated as well. Vapor barrier and one area where the dirt has collapsed. Thank you.
Vicinity of NW Norwood Place in Corvallis
We have begun to get water seeping into an area of our basement when it rains. When I had a hose run outside ( about 6in to 1ft from the foundation in problem area) I found about 1/2 bucket of the water had seeped into the basement after about 20 minutes. Cannot see any evidence of water on the basement walls, just on the floor.
Vicinity of NW Monterey Drive in Corvallis
Replace old moister barrier / insulation heat ducts home is 1475 sq pf
Vicinity of in Corvallis
Water leaking into sub-basement area at junctions of wall/floor
Vicinity of in Corvallis
Please contact me by email. Our basement leaks when it rains.
Vicinity of in Corvallis
Crawl space moisture with high water table and heavy clay soil. Not sure what choices I have to mitigate potential damage to flooring, joists, foundation, or flex ducts.
Vicinity of NW Ermine Pl in Corvallis
Time for sump pump and 6 mil vapor barrier replacement. Investigating crawl space encapsulation. Ready to start.
Vicinity of NE Fair Acres Dr. in Corvallis
Crawl space drainage issues.
Vicinity of SW Timian in Corvallis
Crawl space issue with water also old insulation needs replacement
Vicinity of NW Buttercup Dr. in Corvallis
Our crawling space is smelly because of rats, which were exterminated by professionals. Need to replace insulation, etc.
Serving the following Corvallis, OR zip codes
97330, 97331, 97333, 97339
Service Area
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