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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
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

John's Waterproofing serving Portland, OR

Happy Customers Surrounding Portland, OR
Work Requests

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

Basement Waterproofing & Crawl Space Repair in Portland, 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 Portland 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 Portland, 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 Portland 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 Portland

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

Work Requests From Portland, OR
Vicinity of SE Long Street in Portland
I'm planning a basement remodel in September and have noticed some water intrusion through the basement walls in the past. You came recommended by one of the contractors who is bidding on my project. He recommended possible trenching and sump-pump before we start our project. I'd like to schedule a time for you to come out and take a look. Preferably on a Friday, my work-from-home day. Thanks! Nikki
Vicinity of in Portland
Want to build an adu, and get any work done to ensure no water intrusion happens after construction.
Vicinity of in Portland
Interested in waterproofing basement
Vicinity of N Borthwick Ave. in Portland
I am wondering if water is getting in to my basement. The floor seems to be less level than it used to be.
Vicinity of SW Cedar Hills Blvd in Portland
We just purchased a house and the vapor barrier was pulled back in spots, some small puddles and some places where the vents and entry points were not sealed well. We would like an estimate for fixing the crawl space
Vicinity of in Portland
We have sings of moisture coming from our crawl space in our home (e.g. lower parts of interior walls showing signs of mold and mildew)
Vicinity of in Portland
We would like to fix some foundation cracks/ drainage issues on our 1920's house on a hill that has an unfinished basement that we would like to fully waterproof someday.
Vicinity of in Portland
We have what looks like calcium deposits leaching through the walls.
Vicinity of N Kalmar St in Portland
With the recent heavy rain, my basement floor got pretty wet. I'm also concerned about the crawlspace.
Vicinity of in Portland
Have water entering basement behind sheetrock, have not been able to determine source. Water came through egress well first time, but we installed sump pump. Now water entering elsewhere, about 12 ft away, clear and not brown. New roof 3 months ago, water drains from neighbors driveway, but earlier we put in french drain the length of driveway. Water runs on painted surface toward original drain on other side of basement through storage area.
Vicinity of NW Jericho Rd. in Portland
I have a 1960's ranch on a slope with window wells. When it rains heavy (now) I get water in the basement.
Vicinity of NE Fremont St in Portland
Bid for external waterproofing of one exterior wall, below grade
Vicinity of SW Nevada Ct in Portland
Estimate and availability for seismic upgrade in two older parts of home and waterproof oldest part of basement, sump pump, some work on crawl space. Home has 3 parts built 1926,1960's, 1992. Combined sq feet about 1600, work needed on about 1000 sq ft.. Available most days but no Monday after 12. Thanks
Vicinity of NW Mitchell St. in Portland
Our house has some moisture and insulation issues we need remedied in our crawl space.
Vicinity of SW Brier Place in Portland
Seal crawl space for energy efficiency and draft control.
Vicinity of SE Rex Dr Portland in Portland
Need vapor barrier installed in crawl space
Vicinity of NE Broadway in Portland
Water entering basement through window.
Vicinity of SE HAWTHORNE BLVD in Portland
Crawl space with sagging floor and insulation. Furnace is in the crawl space so would like better air quality.
Vicinity of N Central St. in Portland
We have had small amounts of water entering our basement during very heavy rains for a couple years, but it is now happening much more often creating a puddle quickly.
Vicinity of in Portland
Hi there! We discovered water in our basement this week. We had a raised floor above the pooled water and we managed to remove the rotten wood to observe where the water is coming from. It appears our basement floor drain is clogged. When we turn on the faucet in our kitchen, water rises from the drain downstairs. Would it be possible to have someone take a look soon? Our schedules are flexible so any time. Thanks so much!
Serving the following Portland, OR zip codes
97201, 97202, 97203, 97204, 97205, 97206, 97207, 97208, 97209, 97210, 97211, 97212, 97213, 97214, 97215, 97216, 97217, 97218, 97219, 97220, 97221, 97222, 97223, 97224, 97225, 97227, 97228, 97229, 97230, 97231, 97232, 97233, 97236, 97238, 97239, 97240, 97242, 97256, 97258, 97266, 97267, 97268, 97269, 97280, 97281, 97282, 97283, 97286, 97290, 97291, 97292, 97293, 97294, 97296, 97298