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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 Lake Oswego
Unstable foundation repaired with Smart Jacks

Unstable foundation repaired with Smart Jacks

Before After
Unstable foundation repaired with Smart Jacks Unstable foundation repaired with Smart Jacks

Parts of this foundation were in dire need of help and reinforcements. Our team went in and replaced many of these below standard posts with our patented Smart Jacks, guaranteed to never rust and create an unsafe foundation. They also include a superb warranty. 

Wet crumply crawlspace

Wet crumply crawlspace

Before After
Wet crumply crawlspace Wet crumply crawlspace

Our inspector AJ is great at bringing back photos for the homeowner and, in turn, the marketing department. This crawlspace is not unique. Most of the crawlspaces we see look like this or worse. (I'd venture to bet that most of the crawlspaces in the Pacific Northwest look like this.) 

Company Awards
We received the Impact award this year (2017) at the annual basement system dealer’s convention. This award means so much... [Read more]
We recieved #14 in the nation in total sales for basement system products installed, there are over 160 other dealers... [Read more]
We received #20 in the nation this year for total CleanSpace installed, we take pride in these awards because it... [Read more]
More Awards

Your Proven Lake Oswego, OR Basement Finishing & Waterproofing Experts

Please tell the powers that be that Manuel  G's crew was amazing. They were all very courteous and hard working....
Happy Customers Surrounding Lake Oswego, OR
Work Requests

Click the icons to see what our customers had to say.

Reviews From Lake Oswego
Testimonials From Lake Oswego
I have been a customer for over 10 years and have always received great service and quality products.
Testimonial by Tom A. from Lake Oswego, OR
We highly recommend this company for the tough job of removing water from crawl spaces. John's employees are thorough, careful, respectful and clean.
Testimonial by Bonnie C. from Lake Oswego, OR
I believe this is a viable, affordable solution and was explained very well.
Testimonial by Tyler J. from Portland, OR

Basement Waterproofing & Crawl Space Repair in Lake Oswego, 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 Lake Oswego 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 Lake Oswego, 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 Lake Oswego 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.

Earthquake & Seismic Retrofitting in Lake Oswego

In Lake Oswego, 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 Lake Oswego, OR, please click below and John's Waterproofing will contact you shortly.

Press Releases From Lake Oswego
News & Events From from Lake Oswego
John's Waterproofing restores customer's basement back to a dry, useable space.... [Read more]
Work Requests From Lake Oswego, OR
Middlecrest Rd in Lake Oswego
Need injections in a few holes in concrete basement wall.
Iron Mountain Rd in Lake Oswego
Basement/family run water damage from outside
LakeView Blvd in Lake Oswego
Need an outside clogged drain looked at which I believe is causing leakage in our basement.
Worthington St in Lake Oswego
Water in the basement
Orchard Springs Rd in Lake Oswego
House is situated on non-drying clay, hardwood floors have cupped, have concern about radon as well
Chapin Way in Lake Oswego
Good Evening, We've had two leaks coming from our crawl space into daylight living area and can't determine the source. I'd like a quote to fix the issue. When can you come out? Thank you, -Rich 503-881-2806
Devon Lane in Lake Oswego
The building has a gravity drainage system which includes French drains around the foundation. Water is directed into a sump well in the crawl space before being pumped up to a sewer line. The crawl space has a vapor barrier but is not encapsulated. The sump pump suffers from sediment buildup and seizes regularly, leaving standing water. I may have some mold forming. A radon test was performed in May with an average reading of 0.3 pCi/L. There is a musty smell and I'm concerned about air quality. Forced air furnace is in crawl space. Most supply ducts are insulated, returns are not. I'm planning to install cooling next year and would like to prepare the space as needed. I'm interested in suggestions and an estimate for the work, please. Thanks for your time and help. /bh
Roosevelt Ave. in Lake Oswego
We would like to get an estimate for removal of dry rot of the sill plate in our crawlspace and also some dry rot on a window and siding. Would also like to know how far your booking out to do the work. Thanks.
Glacier Lily St in Lake Oswego
I have a client in Lake Oswego that is selling their home and the inspection found that several crawlspace vertical beams are defective. We need to get them repaired.
Sw Laurel Street in Lake Oswego
Water leakage in basement and mold oder
Touchstone in Lake Oswego
Small leak in basement, need estimate to repair.
in Lake Oswego
We just need to have our vapor barrier removed and a new one installed.
Wembley Pl in Lake Oswego
Have a leak in daylight/finished basement that occurs during heavy rainfail.
Orchard Way in Lake Oswego
Moisture / mildew
Sundew Ct in Lake Oswego
I need put insulation for crawl space.
Galen St in Lake Oswego
My Salem house has water infiltration mainly from floor cracks but also some perimeter infiltration. I want to see what my options are.
Vale Court in Lake Oswego
Estimate for the crawlspace. Appointment set
McVey Avenue in Lake Oswego
Looking for a crawl space estimate. Appt was set.
Chandler Place in Lake Oswego
Estimate to waterproof a basement. Basement and crawl space areas and odors. Appointment set
Sundew Ct in Lake Oswego
Calling to get an estimate for crawl space insulation appointment booked