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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
in Portland
This rental home has a sump pump installed in the crawlspace. I would like to have it checked to be sure it is working properly
N Atlantic Ave in Portland
We're planning on finishing our basement. We have what we believe to be minor basement water issues so we feel it's worth the investment to sure it up and finish it. We want to use the space as a finished rec room with new bathroom and bedroom so it's a major project. Our house is 1940-ish construction.
N Kilpatrick St in Portland
Our finished basement floods in heavy rain, and slightly damp all winter. Had a quote a few years ago but have since done a little more investigating and have better idea what we need so hoping for a new quote and to start some work in next month or so.
N Kilpatrick St in Portland
Our finished basement floods in heavy rain, and slightly damp all winter. Had a quote a few years ago but have since done a little more investigating and have better idea what we need so hoping for a new quote and to start some work in next month or so.
in Portland
We have 2 support beams in our basement, one is supported by 2 uprights, the other only by one. The less supported one sags 11/16 over 8', and we'd like a secondary support installed. I have a screw Jack in place to keep it from sagging further currently. Thank you.
in Portland
We are considering purchasing a house on NE 18th, we would like to finish the basement and would like your estimate on what it would take to ensure a dry basement. Is this something you could do in the next week or so?
Southeast Taggart Street in Portland
We have water coming into our basement in one location and are planning to finish the basement area into livable square footage.
in Portland
Our unfinished basement has water flowing in, through some cracks in our cement walls.
Se Lee Avenue in Portland
Standing water under the house and major moisture and mold inside the home
NW Stark Ct in Portland
Water leakage issue in crawlspace
Northeast Sumner Street in Portland
Looking to convert a crawl space into a finished area. Are you able to provide a quote for this?
in Portland
We gutted our basement to refinish it. During the winter time, we have been letting it sit to see if there were any water issues. We have found small puddles in the middle of the floor, away from the walls, in one area - only after some very heavy rains. The storm drains are on the other end of the house. We were going to have the basement floors polished but until we can stop the water issue, we are at a stand still. I have pictures as well. Thank you
in Portland
Small seepage areas through concrete walls in unfinished basement on West and South walls.
in Portland
Small amount of water entering the basement.
in Portland
Basement waterproofing prior to remodel
N. Fessenden St. in Portland
Mold issues in the basement. Want to prevent long term damage.
in Portland
I have an area of my finished basement that becomes wet when it rains heavily
SE Tolman St. in Portland
Moisture/mold in finished basement
in Portland
We have a leak in the center of our basement coming from the foundation.
in Portland
Old house with downspouts just dumping water in the ground. Water gets into the basement in one section. I am looking for some waterproofing solutions in that part of my basement.
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