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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 Mosier
Mosier, Oregon Wet and Cramped Crawl Space

Mosier, Oregon Wet and Cramped Crawl Space

Before After
Mosier, Oregon Wet and Cramped Crawl Space Mosier, Oregon Wet and Cramped Crawl Space

Our team came out to this home and dug out the wet muddy soil from the crawl space, giving the homeowners room to get down there for work as needed. We installed a CleanSpace Encapsulation System for moisture and a SmartJack Crawl Space Stabilizer to help support the home where a post was missing. The encapsulation system along with a sump pump and dehumidifier keeps the crawl space dry. While the SmartJack system ensures the home will be supported and the area won't sag due to rotting posts. 

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 Trusted Mosier, OR Crawl Space & Basement Repair Contractor

he is an asset to John’s Waterproofing Company....
Happy Customers Surrounding Mosier, OR
Work Requests

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

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

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Job Stories From Mosier, OR
Mud Fills Crawlspace - Mosier, OR

This home had a vapor barrier installed by another company, this had been enough until a rain storm hit. Since the barrier had never been secured along the edges, and no Sump Pump was installed, the water pushed the dirt and mud around in the crawlspace. It seeped past the barrier and filled places under the home. In the places where it didn't fill, the mud just sat on the barrier unable to go anywhere else. It was time to call the company that had over forty years of experience: John's Waterproofing. 

Our crew started by removing the debris from the crawlspace, and dug out the soil where it had accumulated under the home. Once the space was cleared out and our crews could access the crawlspace in full, they began by adding a 3 inch perforated pipe along the interior walls of the crawlspace. These are installed to collect the water and divert it to the Smart Sump that we install. This then pumps the water out and away from the homes foundation. We then added in a 6 Mil Black plastic vapor barrier and sealed this along the walls, and sealed all the creases or points where water might try to break through. With this upgraded crawlspace waterproofing, the home will be protected when the rainy season comes around again. 

Lower Energy Costs for Home in Mosier, Oregon

A homeowner in Mosier, Oregon was trying to lower his heating and cooling costs but was having difficulties figuring out what else he could do to lower them. Our team went out to his home and figured out that the air from his crawl space might be to blame for the high energy costs. 50% of the air in a home originates from the basement or crawl space. So if the air in the crawl space is cold or hot so is the air in the rest of the house. Our crew installed CleanSpace encapsulation system on the floor and walls of the crawl space. CleanSpace prevents moisture and water vapor from coming into the crawl space through the walls or floor. It also helps keep out pests and helps keep the temperature of the ground out of the crawl space and out of the rest of the house. A lot of houses, this one included, have open vented crawl spaces. Having that opening means that any cold, hot or humid air from outside comes directly into the crawl space and therefore into the rest of the house. So our crew installed an insulated vent cover to stop this from happening. So now the outside air stays outside and the homeowner only has to heat or cool the air from inside the house, not outside. Now the homeowner can spend his hard earned money on other things instead of energy bills.  

Work Requests From Mosier, OR
Project Location: Mosier, OR
Wall leaks into basement bedroom after moderate rain. Concrete retaining wall suspect, not visible (yet), 110-yr old house, built on rocky slope.
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