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Basement Repair Services & Products
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
Aspen Air Purifier

 

Crawl Space Repair Services & Products
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

 

Seismic/Earthquake Retrofitting
Before and After Pictures from Cornelius
Rotting Beams in Crawlspace - Cornelius, OR

Rotting Beams in Crawlspace - Cornelius, OR

Before After
Rotting Beams in Crawlspace - Cornelius, OR Rotting Beams in Crawlspace - Cornelius, OR

By using Smartjack steel posts to replace your old wooden ones. 

Mud Caked Crawlspace and High Energy Bills - Cornelius, OR

Mud Caked Crawlspace and High Energy Bills - Cornelius, OR

Before After
Mud Caked Crawlspace and High Energy Bills - Cornelius, OR Mud Caked Crawlspace and High Energy Bills - Cornelius, OR

This home had mud caked throughout the crawlspace and high energy bills. To address this the homeowners had us do a full crawlspace insulation and encapsulation. 

High Heating and Cooling Costs in Cornelius, OR

High Heating and Cooling Costs in Cornelius, OR

Before After
High Heating and Cooling Costs in Cornelius, OR High Heating and Cooling Costs in Cornelius, OR

This homes heating and cooling costs were rising and the homeowners were in need of a solution. In search of lower energy costs, they ventured under their home and discovered the old fiberglass insulation was falling in stripes and mud was caked throughout. So they turned to John's Waterproofing for insulation made for crawlspaces: TerraBlock and Spray Foam. 

Company Awards
Homebuilders Award 2024
The BUILD magazine looks towards a more sustainable future, their award winners strive to find solutions to those tricky issues... [Read more]
BBB Torch Awards for Ethics - 2023 Winner
BBB has presented John's Waterproofing with one of their most prestigious honors: the Torch Award! Out of hundreds of other... [Read more]
Best Contractor Award 2023
Choosing the contractor isn't easy. This award verifies that the winning company is insured, licensed, has references, and offers warranties.... [Read more]
More Awards

Your Proven Expert Basement Waterproofing & Crawl Space Repair Company in Cornelius, OR

Happy Customers Surrounding Cornelius, OR
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Basement Waterproofing, Crawl Space Repair & More in Cornelius

Since 1974, Cornelius homeowners have trusted John's Waterproofing to deliver exceptional service with high-quality, proven home repair solutions. Whether you want to waterproof your basement or crawl space or upgrade your home's electrical wiring, we have the tools and expertise to get the job done right. You can trust our team of friendly, highly-trained technicians to help you find the best solution for your home. Learn more about the services we offer below!

Services offered by John's Waterproofing

  • Basement waterproofing
  • Basement crack repair
  • Crawl space repair
  • Crawl space encapsulation
  • Mold remediation
  • Radon testing
  • Radon mitigation
  • Electrical services
  • Plumbing
  • Insulation
  • Foundation repair
  • Foundation leak repair
  • Sump pump installation
  • And more!

John's Waterproofing is proud to serve Oregon residents in Cornelius and throughout Washington County. Call 1-503-694-4764 or click below to schedule your free estimate!

Dependable Crawl Space Encapsulation in Cornelius

Most of us have heard the old saying, "out of sight, out of mind" — and your home's crawl space is the perfect example. Not to mention most crawl spaces are dirty, musty, and damp, and in more severe cases, they may even have pests or rodents living in them. It's no wonder many homeowners avoid the crawl space! Unfortunately, these common crawl space problems don't stay in the crawl space; they can affect your entire home.

Signs of common crawl space problems

  • Foul odors in the home
  • Interior drywall cracks
  • High utility bills
  • Rodent or pest infestations
  • Condensation
  • Standing water
  • Uneven, sagging floors
  • Heightened allergies or asthma symptoms

If you’ve noticed any of these symptoms, it’s time to contact a professional crawl space contractor. John's Waterproofing is proud to offer crawl space repair, crawl space encapsulation, vapor barriers, and more to homeowners in Cornelius and nearby. Call 1-503-694-4764 or complete the provided form to schedule your free estimate!

Cornelius Basement Waterproofing Company

Are you having problems with a musty, wet basement? At John's Waterproofing, we believe you shouldn’t have to settle for a dirty, damp, or flooded basement. In fact, ignoring signs of basement water damage only creates bigger problems!

Common signs of basement water damage

  • Mold & mildew growth
  • Wood rot
  • Cracked or crumbling walls
  • Wet drywall or floors
  • Flaking, peeling paint
  • Damp air
  • Condensation
  • Puddles or standing water
  • Musty smells
  • White, chalky stains on concrete

We’ve been providing Cornelius homeowners with reliable basement waterproofing solutions since 1974. With decades of experience and state-of-the-art basement waterproofing solutions, you can count on our team to transform your below-grade space into a dry and comfortable area of your home.

Call 1-503-694-4764 or click below to schedule your free estimate for basement waterproofing in Cornelius, OR.

Cornelius electrical services by John's Waterproofing

John's Waterproofing offers interior and exterior electrical services for residential and commercial properties in the Cornelius area. Some of the electrical solutions we offer include:

  • Electrical vehicle charging station installation (equipment provided by customer)
  • Electrical switches, outlets & fixtures (installation & repair)
  • Electrical wiring & panel upgrades
  • Fixed & portal generator installation
  • Complete wiring for new home additions & remodels

Call us at 1-503-694-4764 or reach out online to learn more about the electrical services we offer in Cornelius and nearby cities in Oregon.

Foundation Repair in Cornelius

If your foundation is buckling, cracked, bowing, or showing other signs of damage, John's Waterproofing can help. We have the experience and expertise to accurately diagnose foundation problems and recommend a customized repair solution for your home. Using our top-notch foundation repair products, we can restore your foundation to like-new condition and keep additional problems at bay.

Our foundation repair services

  • Foundation wall repair
  • Steel I-beam systems
  • Carbon fiber wall reinforcing systems
  • Crawl space support jacks
  • And more!

To schedule a free estimate for foundation repair in Cornelius, OR, call 1-503-694-4764 or contact us online.

Radon testing & radon mitigation in Cornelius

Radon is a radioactive, cancer-causing gas. Because it is odorless and invisible, radon can go undetected in your home. John's Waterproofing is a qualified radon mitigation company in Cornelius. Our specialists can determine the radon levels in your home so you can have peace of mind. If your home’s radon levels exceed the EPA-recommended 4.0 picocuries per liter (pCI/L), we can provide an effective radon mitigation system.

Our Cornelius radon services

  • Radon testing
  • Radon mitigation
  • HUD multi-family radon testing

With John's Waterproofing, you don’t have to be concerned about home radon. You can count on our experts to minimize radon exposure and create a safer, healthier home for you and your family. Call 1-503-694-4764 or click below to get started with a free estimate!

Job Stories From Cornelius, OR
Wet Crawlspace Holding up Sale - Cornelius, OR

Most don't know that we have a special Real Estate program and we will give discounts to brokers, buyers, and sellers. Such was the case here. The broker was sent an "estimate of repairs" based on the inspection report and square footage so they could get a rough estimate and move on with their negotiations. Once they decided to move forward with the work, a System Designer visited the site and prepared a hard number proposal that, since it was accepted before the close of escrow, a generous discount was applied. This seller agreed to the work and decided to pay for it out of the escrow proceeds. 

Our installation crew arrived and got right to work removing the old vapor barrier and other debris from the crawlspace. They dug a trench around the perimeter of the crawlspace where a 3" perforated pipe, encased in a silt sock to prevent dirt from clogging the pipe. This was graded to the lowest spot in the crawlspace where we installed a SuperSump pump. Proper drainage away from the house was included. A new 6mil vapor barrier was laid over the dirt floor, generously overlapped and attached to the foundation walls to keep it in place. The work came with a 10yr transferrable warranty so the seller was happy because the sale went through without a hitch and the new owners were very happy. 

Basement Flooded - Cornelius, OR

It can be easy to push a basement water issue to the back of your mind, that is until it floods. This home had a small leak, but the homeowners hadn't been very concerned about it. But once heavy rains hit, the basement ended up flooding. There was a layer of water throughout the space, and the homeowners had to rush to save the items they kept in this area. They decided they couldn't overlook this issue any further, and they called up John's Waterproofing. 

When our installers arrived they dug a six inch trench along the interior parameter. Here is where we laid down a layer of gravel with our WaterGaurd drainage system. This is covered up with concrete to give the space a smooth finish for the flooring. To divert water down from the wall to this system we covered the walls with our BrightWall paneling to keep water moving down safely. The drainage system then grades water to the TripleSafe sump pump and carries the water out and away from the home. As a final piece we installed a SaniDry dehumidifier to ensure the space remains dry and healthy. The homeowners were thrilled to have their home properly waterproofed, protecting their home. 

Leaky Basement Solution - Cornelius, OR

This homeowner was dismayed to find several places in their finished basement were leaking after a particularly nasty storm so they called John's Waterproofing in desperate need of help. A System Designer was sent out to the address to see what the problem was. It is not uncommon to have a previously dry basement start leaking for a number of reasons and why every homeowner in our area should waterproof their basement before finishing to protect your investment. 

 

The carpet, padding, drywall, and insulation all had to be removed and framing cut 32" above the ground before the crew began the job of installing the WaterGuard. WaterGuard is an award-winning piping system engineered specifically to solve basement water problems effectively and without the worry of clogging pipes from soil under the floor. Our crew installed it around the perimeter terminating it at a newly installed SuperSump Plus. It has a primary pump with a battery backup to assure continued pumping in the event of a power outage. Once the space was properly waterproofed, it was turned over to the homeowner and their contractors for finishing. 

Water in the Basement - Cornelius, OR

The homeowners had water entering their basement. The porous concrete walls were damp to the touch and it was making its way to the floorspace where the families storage items were kept. Worried about the imposing water threat to their belongings, they reached out to John's Waterproofing. 

To help with this issue we dug a trench along the interior perimeter and installed our WaterGuard system. This collects the water from the foundations surroundings and directs it a safe distance away from the home via a discharge pipe. To ensure that the water from the walls wouldn't just become a humidity in the basement causing damage we then installed a SaniDry Sedona to maintain a healthy humidity level so mold won't grow. 

CleanSpace in Cornelius, OR

Brian has a home out in Cornelius, Oregon that had a very dirty crawl space and he knew he needed to do something about it. He got the phone number for John's Waterproofing off of the internet and gave us a call. Not long after, Vincent went out to take a look and decided that the best solution for Brian was to do a full encapsulation of the crawl space eliminating any chance of dirt, debris or rodents from being able to get in. 

Ramon and Fernando were sent out to do the work and in just a few days they had the crawl space cleaned out and used the CleanSpace material to do the encapsulation. CleanSpace is an antimicrobial woven fiber that is 20 ml thick creating an airtight crawl space.

Now Brian has no worries about his crawl space and was very pleased with the work done.

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