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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

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Crawl Space Sump Pump

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Crawl Space Waterproofing

Crawl Space Excavation

Basement Remodeling

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Basement Subfloor

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Seismic/Earthquake Retrofitting

Before and After Pictures from Olga

Crawl Space Work in Olga, WA

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Top Air Filter System of 2025

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Trusted Olga Waterproofing & Home Repair Contractor

Crawl Space Encapsulation, Basement Waterproofing & More in Olga, WA

Your home is a valuable asset, and protecting it should be a top priority. Working with a skilled, reliable home services contractor is one of the best ways to safeguard your investment. In Olga, that’s John's Waterproofing.

Since 1974, our team has been dedicated to delivering outstanding services to homeowners across Washington. We ensure top-quality results by using premium products from industry leaders. Whether you need basement waterproofing, crawl space repairs, or other services, you can rely on John's Waterproofing to get the job done right. 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
Insulation
Foundation repair
Foundation leak repair
Sump pump installation
And more!

John's Waterproofing is proud to serve homeowners in Washington residents in Olga and throughout San Juan County. Call 1-503-427-9664 or click below to schedule your free estimate today!

Get a FREE Estimate!

Crawl Space Repair Contractor in Olga

The condition of your crawl space plays a significant role in your home's overall comfort and efficiency. While it’s easy to forget about, especially since it’s tucked away, neglecting your crawl space can lead to moisture and humidity problems that affect your entire house. Fortunately, your crawl space usually shows signs when it needs repair or encapsulation.

Common signs of crawl space issues

Unpleasant odors in the home
Cracks in interior drywall
Higher energy bills
Rodent or pest problems

Excess moisture or condensation
Standing water
Uneven or sagging floors
Increased allergies or asthma symptoms

If you’ve noticed any of these issues, it’s time to consult with a professional crawl space repair contractor. John's Waterproofing proudly offers crawl space repair, encapsulation, vapor barriers, and more to homeowners in Olga and surrounding areas.

Call 1-503-427-9664 or fill out the form below to schedule your free estimate!

Reliable & Efficient Basement Waterproofing in Olga

Washington is no stranger to rainfall, and with frequent downpours, Olga homes are at risk for basement water damage. While some signs of water damage are obvious, others can go unnoticed. Delaying repairs only increases the risk of significant damage and expensive repairs down the line.

Common indicators of basement water damage

Mold & mildew growth
Wood rot
Cracked or deteriorating walls
Wet drywall or flooring
Peeling or flaking paint

Excess humidity
Condensation buildup
Puddles or standing water
Musty odors
White, chalky stains on concrete

If you notice standing water or any signs of water damage in your basement, John's Waterproofing is here to help. We offer proven, advanced basement waterproofing solutions to keep your basement dry and protected from moisture year-round.

Schedule a free estimate for basement waterproofing in Olga or the surrounding area today!

Get a FREE Estimate!

Your Olga Basement Finishing Experts

Once your basement is waterproofed, John's Waterproofing is here to help you maximize the potential of your space! As your trusted basement finishing experts, we can transform your basement into a beautiful, functional area of your home. Whether you envision a stylish home office, basement bar, home gym, guest suite, or anything in between, we’re ready to bring your ideas to life.

Benefits of basement finishing

Increases the value of your home
Expands your usable square footage
Creates additional living space
Prevents moisture & mold buildup
Enhances energy efficiency
Improves overall comfort
Better indoor air quality
And more!

Call us at 1-503-427-9664 or contact us online today to schedule a free basement finishing estimate!

Olga Foundation Repair Company

Your foundation is one of the most critical components of your Olga home. When your foundation is damaged or settling, it can jeopardize the structural integrity of your entire house. How can you tell if your foundation is in trouble? Common signs include cracks in the walls and floors, bowing or leaning walls, sagging floors above the crawl space, doors and windows that stick, and more.

If you’ve noticed any of these issues or other signs of foundation damage, don’t wait to contact John's Waterproofing — your local foundation repair specialists in Olga and surrounding areas. Our experienced and skilled team will assess your foundation and recommend the most effective repair solutions to restore its stability.

Our foundation repair services

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

Call 1-503-427-9664 or contact us online to schedule a free foundation repair estimate in Olga, WA.

Olga Radon Testing & Mitigation Services

Radon is a hazardous, odorless, tasteless, and invisible gas that can lead to serious health risks when exposed to high levels over time, including lung cancer. Radon is the second leading cause of lung cancer in the United States, just after smoking. Since radon has no obvious signs, it takes a trained professional, like the team at John's Waterproofing, to detect it and ensure your home is safe.

Our Olga radon services

Radon testing
Radon mitigation
HUD multi-family radon testing

Reach out to us today to learn how we can help reduce radon levels and make your home safer and healthier for you and your family. Call 1-503-427-9664 or click below to schedule your free estimate in Olga.

Get a FREE Estimate!

Job Stories From Olga, WA

Protect Your Home Against Water - Olga, WA

This homeowner wanted to know the best method of protecting their home against water. They live in an area that experiences heavy rainfall in the winter seasons and their house is in a spot where they experience a lot of runoff. They reached out to John's Waterproofing about what their options were since they already have a drainage system installed, but, they only had a simple 6 mil vapor barrier over the drain system. We suggested an encapsulation process in which we apply an insulation, vapor barrier, and a dehumidifier.

Our insulation process begins with applying a DrainMatt. This is dimple plastic matting that goes beneath the insulation and vapor barrier right on top of the soil. It is designed to prevent water buildup from rainfall. Then, we install TerraBlock. This insulation foam is 3/4 in. thick and helps to prevent moisture or mold. Over top of the TerraBlock, we install a CleanSpace vapor barrier. This vapor barrier has a 25 year warranty against rips and tears due to it being made from 20 mil thick woven fibers. It is water resistant and keeps any moisture from getting on top of it. Because it can keep water trapped beneath, this helps make your crawl space more energy efficient and help lower your homes heating and cooling costs. A SaniDry dehumidifier is then installed to pull any excess moisture out of the air. This is a critical step because any moisture in the crawl space can evaporate and get into the air you breathe inside your home and that can be harmful. The SaniDry keeps your relative humidity levels low so that the air quality remains safe and healthy. The final step in the insulation process includes applying Spray Foam along the foundation walls. This is designed to expand into every crack and crevice to completely air seal the space. After this process is all completed, the crawl space can be a dry and healthy spot that benefits the overall home and its occupants.

How Full Encapsulations Protect Your Home - Olga, WA

This homeowner researched the importance of having a properly insulated crawl space. Not only does it help lower heating and cooling costs, but it is essential to maintain your homes health. It improves the structural security because it provides protection to your homes foundation from moisture and humidity. Your home is built on top of soil, thus that soil is cold and when warm air from the outside comes in it raises the humidity levels causing mold, rot, and attracts pests. This homeowner reached out to John's Waterproofing and agreed that a full encapsulation was a necessity to maintain their homes health.

In an encapsulation, the process begins by installing a drainage system. This home did not have a groundwater issue, so we just installed a DrainMatt which is a dimpled plastic mat applied to the base of the crawl space to direct the flow of water. This first-layer vapor barrier helps prevent pooling. Next, TerraBlock is installed as an insulation foam. The last step that goes on top is CleanSpace. This vapor barrier is installed along the entire base of the crawl space and between the concrete footing and wooden posts. It is able to isolate the wooden posts to protect them from moisture damage and prevent rotting. These three pieces all help to stop water from flooding the crawl space, while simultaneously acting as insulation for the home. A SaniDry dehumidifier is installed that works to pull moisture out of the air and control humidity levels. Finally, Spray Foam is applied along the foundation walls to air seal the space. This process ensures the home is properly protected against moisture damage and helps to maintain the homes health.

Moisture Issues in the Crawl Space - Olga, WA

This home didn't have a big water issue, but it did have moisture which would form along the homes subfloor and would drip down. The dirt floor would get large wet spots where this occurred. The owners of the home called up John's Waterproofing and scheduled their free inspection with one of our dedicated design specialists who worked with them to craft a repair plan that made sense for their home.

To begin we cleared the space out, and then we laid in our dimpled drainage matting over the gravel floor of the space. Over this we installed our TerraBlock insulation, and we sealed each vent shut. CleanSpace was brought in next, anchored along the foundation walls, wrapped under each wooden post, and sealed in to place along each seam. We installed a SaniDry dehumidifier to then control the moisture and keep it at a healthy level so no mold or mildew can grow in this crawl space. We finished with spray foam along the foundation walls. This space can now drain dry and healthy all year long and the owners can't wait to see how it homes up!