Contact Us For
A Free Estimate!
Products & Services
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 Sandy
Wet Basement in Sandy, OR

Wet Basement in Sandy, OR

Before After
Wet Basement in Sandy, OR Wet Basement in Sandy, OR

This customer had a finished basement that was used for kids living space, but without the proper waterproofing system in place they started to get water seepage and leaks down in the kids’ bedrooms! This was destroying their stuff and leaving it an unsafe place to dwell in. Our team came out and put in a full WaterGuard system and put in our Thermaldry Wall system which will help reflect heat and make the room much warmer for the kids as well. The homeowners chose to finish the basement themselves so we set up the basement for them to finish over. 

CleanSpace, Salem, OR

CleanSpace, Salem, OR

Before After
CleanSpace, Salem, OR CleanSpace, Salem, OR

As you can see in the photos, encapsulating your crawl space with the CleanSpace vapor barrier protects the structure of your home from mold and dampness. 

Messy Crawlspace with Critter Evidence in Sandy, OR

Messy Crawlspace with Critter Evidence in Sandy, OR

Before After
Messy Crawlspace with Critter Evidence in Sandy, OR Messy Crawlspace with Critter Evidence in Sandy, OR

The crawlspace of this home had evidence of critters living there, and the homeowners were looking to keep them out. As our design specialists discussed options we learned that the home had oddly high energy bills as well. To combat both the vermin and energy costs we did a full encapsulation with our crawlspace-specific insulation. This home will now be dry and healthy. 

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 Reliable Sandy, OR Leaky Basement Repair & Crawl Space Repair Company

  I'm really glad I found you folks.    ...
Happy Customers Surrounding Sandy, OR

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

Reviews From Sandy
Testimonials From Sandy
My husband was also very impressed with your assessment and honesty.
Testimonial by Dora P. from Sandy, OR
The price was better than they said it would be!
Testimonial by Sandy R. from West Linn, OR

Basement Waterproofing, Crawl Space Repair & More in Sandy

Since 1974, Sandy 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 Sandy and throughout Clackamas County. Call 1-844-268-0589 or click below to schedule your free estimate!

Dependable Crawl Space Encapsulation in Sandy

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 Sandy and nearby. Call 1-844-268-0589 or complete the provided form to schedule your free estimate!

Sandy 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 Sandy 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 1-844-268-0589 or click below to schedule your free estimate for basement waterproofing in Sandy, OR.

Sandy electrical services by John's Waterproofing

John's Waterproofing offers interior and exterior electrical services for residential and commercial properties in the Sandy 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 1-844-268-0589 or reach out online to learn more about the electrical services we offer in Sandy and nearby cities in Oregon.

Foundation Repair in Sandy

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 Sandy, OR, call 1-844-268-0589 or contact us online.

Radon testing & radon mitigation in Sandy

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 Sandy. 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 Sandy 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 1-844-268-0589 or click below to get started with a free estimate!

Case Studies From Sandy
Most of the time John's Waterproofing receives urgent calls because of water in a crawlspace or basement. Then there's the proactive customer that...
The usual choice for insulation is fiberglass. While this product is great throughout the walls of a home, it is specifically designed for spaces...
Job Stories From Sandy, OR
Finished Basement with Leaky Bedroom Window in Sandy, OR

This basement had been purchased with a fully finished basement, which included a bedroom with a large below grade window. After living in the home for a few years, the bedroom window had water coming through, after inspecting the drywall and carpeting around this, there was a lot more water damage occurring. They called up Johns Waterproofing for a full inspection.

To address the homes water problems we removed the damaged drywall and carpeting that was molding and damp. We then installed a new WellDuct for the large window to ensure the home was better protected. We then went inside the home and dug a trench along the interior perimeter. Here we laid down a bed of gravel and WaterGuard drainage system. These grade along to an UltraSump pump to divert water away from the home. The walls were then properly insulated with ThermalDry radiant barrier which won't mold or rot. Our finishing crew then came out to refinish the space again, but now with waterproofing to protect this home. 

How to Hide a Sump Pump- Sandy, OR

Many of our customers become dismayed when they learn that they will need a sump pump in their finished basement. We often suggest that they build a cabinet around it and take the discharge line up the wall behind the drywall and then discharge it. This customer did do a very clever disguise of their sump pump. They had a finished basement and created a small cubby space where they took an old end table-type cabinet and used it to house the SuperSump Pump and hid the discharge line in the wall. Hats off to this homeowner!

How to Hide a Sump Pump- Sandy, OR - Photo 1
Waterproofed Basement Remodel Ready - Sandy, OR

The homeowner wanted to finish her wet, smelly basement, so she called on John's Waterproofing to solve the water problem and make sure she didn't have to worry about her basement after investing in remodeling. A System Designer was sent out a few weeks later and discovers problems with damaged and clogged downspouts as well as high water tables. 


WaterGuard is an award-winning piping system engineered specifically to solve basement water problems effectively and without the worry of clogging pipes from soils 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. ThermalDry Wall is a wall system that makes the basement remodel ready and takes care of any water vapor intrusion from the walls. Now this homeowner can finish and enjoy a comfortable space without the worry of water intrusion.

Crawl Space in Sandy, OR

Nicole called into our office and made an appointment to have Sean J come out and assess her crawl space that had gotten water in it from the water heater. A bit of a mess had been made and, Sean suggested that she go ahead and have a clean up done and then the installation of CleanSpace. Nicole agreed and so Delfino and his team here at John's Waterproofing came out. They cleaned up the crawl space and installed a new SaniDry Sedona Dehumidifier that stops moisture and then installed CleanSpace to the entire crawl space. Nicole is now thrilled that she has a dry crawl space and no longer has to worry about any water damage occurring. And knowing that she will not have to worry for many years.

Service Area
Free Quote