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Avatar for John's Waterproofing

John's Waterproofing

4.58(
185
)
Approved Pro

John's Waterproofing

4.58(
185
)
Approved Pro
Customers say: Super punctual
52 years of experience
Free onsite estimate

Since 1974, John's Waterproofing has been helping the PNW have dry and healthy homes. We specialize in below-grade waterproofing for crawlspaces and basements. In addition to this we also provide radon testing and mitigation, and humidity and mold control. We are proud to offer the best in the industry solutions to your homes waterproofing needs. Cost is determined by the job. CCB#15830 (503) 873-5650 [email protected]

"Chris and Joel were great, they were in and out and our water heater was rewired and sump pump wired in no time at all."

Dawn S on May 2025

Since 1974, John's Waterproofing has been helping the PNW have dry and healthy homes. We specialize in below-grade waterproofing for crawlspaces and basements. In addition to this we also provide radon testing and mitigation, and humidity and mold control. We are proud to offer the best in the industry solutions to your homes waterproofing needs. Cost is determined by the job. CCB#15830 (503) 873-5650 [email protected]

"Chris and Joel were great, they were in and out and our water heater was rewired and sump pump wired in no time at all."

Dawn S on May 2025


Avatar for TerraFirma Foundation Systems

TerraFirma Foundation Systems

5.00(
9
)
Approved Pro

TerraFirma Foundation Systems

5.00(
9
)
Approved Pro
Customers say: Quick response
21 years of experience
Free onsite estimate

Thousands of NW homeowners have trusted TerraFirma Foundation Systems to keep their homes safe, dry and stable since 2005. Nearly half of our business comes from referrals or repeat customers. We can help you too! TerraFirma is the NW expert in home foundations, basement and crawl space waterproofing, concrete leveling, and wall stabilization.

"They were great. They had a great communication. They exceeded our expectations."

Rachel Olson K on February 2021

Thousands of NW homeowners have trusted TerraFirma Foundation Systems to keep their homes safe, dry and stable since 2005. Nearly half of our business comes from referrals or repeat customers. We can help you too! TerraFirma is the NW expert in home foundations, basement and crawl space waterproofing, concrete leveling, and wall stabilization.

"They were great. They had a great communication. They exceeded our expectations."

Rachel Olson K on February 2021


Avatar for TerraFirma Foundation Systems

TerraFirma Foundation Systems

4.55(
70
)
Approved Pro

TerraFirma Foundation Systems

4.55(
70
)
Approved Pro
Customers say: Quick response
21 years of experience
Free onsite estimate

Thousands of NW homeowners have trusted TerraFirma Foundation Systems to keep their homes safe, dry and stable since 2005. Nearly half of our business comes from referrals or repeat customers. We can help you too! TerraFirma is the NW expert in home foundations, basement and crawl space waterproofing, concrete leveling, and wall stabilization.

"Skyler and TerraFirma far exceeded our expectations. The injection process of the foam raised our cracked garage floor back to level. Skyler’s customer service was the best. I highly recommend TerraFirma and hope that you get Skyler as the person doing the work… you will not be disappointed!"

Larry H on December 2025

Thousands of NW homeowners have trusted TerraFirma Foundation Systems to keep their homes safe, dry and stable since 2005. Nearly half of our business comes from referrals or repeat customers. We can help you too! TerraFirma is the NW expert in home foundations, basement and crawl space waterproofing, concrete leveling, and wall stabilization.

"Skyler and TerraFirma far exceeded our expectations. The injection process of the foam raised our cracked garage floor back to level. Skyler’s customer service was the best. I highly recommend TerraFirma and hope that you get Skyler as the person doing the work… you will not be disappointed!"

Larry H on December 2025


Avatar for John's Waterproofing Co.

John's Waterproofing Co.

4.74(
47
)
Approved Pro

John's Waterproofing Co.

4.74(
47
)
Approved Pro
Customers say: Quality work
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
52 years of experience

John's Waterproofing Co. is the premier waterproofing company serving in Oregon and southern Washington for almost 4 decades. We Specialize in Basement and Crawlspace Waterproofing and Repairs, we offer free inspections and estimates along with caring customer service. Contact our office today for your waterproofing needs!

"No."

Tracy W on January 2025

John's Waterproofing Co. is the premier waterproofing company serving in Oregon and southern Washington for almost 4 decades. We Specialize in Basement and Crawlspace Waterproofing and Repairs, we offer free inspections and estimates along with caring customer service. Contact our office today for your waterproofing needs!

"No."

Tracy W on January 2025


"They showed up right on time and quickly found the source of the problem."

William H on January 2019

American Leak Detection offers the highest level of expertise in the field of leak detection and line locating. We are licensed and bonded in Oregon and Washington. Award winning.

"They showed up right on time and quickly found the source of the problem."

William H on January 2019


Avatar for Summit Cleaning & Restoration

Summit Cleaning & Restoration

4.50(
28
)

Summit Cleaning & Restoration

4.50(
28
)
Customers say: Super punctual
48 years of experience

24 Hr, 7 Days a Week Emergency Response _____(800) 769-1553_____ Our team of highly trained professionals are committed to providing an excellent service experience for you our customer. Ask us about our Core Values of Service. Much more than words, these are the values that shape our company and every service we offer. We pride ourselves not only in our quality work, but in the way we make our clients feel in the process. Communication - Integrity - Accuracy - Performance Family owned & operated. Additional contact name - Brian Harper. A division of Summit Contractors Group.

"DO NOT BELIEVE these A ratings,,,, POS company that sub contracted a terrible group of amature painters.... multiple things charged and NOT done!! charged for porta potty and none was brought to site upon construction. RIPOFF!!!"

mick w on April 2020

24 Hr, 7 Days a Week Emergency Response _____(800) 769-1553_____ Our team of highly trained professionals are committed to providing an excellent service experience for you our customer. Ask us about our Core Values of Service. Much more than words, these are the values that shape our company and every service we offer. We pride ourselves not only in our quality work, but in the way we make our clients feel in the process. Communication - Integrity - Accuracy - Performance Family owned & operated. Additional contact name - Brian Harper. A division of Summit Contractors Group.

"DO NOT BELIEVE these A ratings,,,, POS company that sub contracted a terrible group of amature painters.... multiple things charged and NOT done!! charged for porta potty and none was brought to site upon construction. RIPOFF!!!"

mick w on April 2020


Avatar for Upfront Construction LLC

Upfront Construction LLC

5.00(
7
)

Upfront Construction LLC

5.00(
7
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Upfront Construction LLC is a family owned and operated and is fully licensed, bonded and insured. Our business has shown to be choice worthy of becoming a go-to source for various interior and exterior residential maintenance. We are consistently striving to make the best experience in any given task. No task is to small whether it be a repair or total remodel. We specialize in basement and crawl space waterproofing. We offer free estimates!!

"This company was on top of getting the work done, provided clear estimates, and followed through with the repairs described. It was a multi-layered project that could have been confusing to track, but they made it easy."

Stephen A on October 2024

Upfront Construction LLC is a family owned and operated and is fully licensed, bonded and insured. Our business has shown to be choice worthy of becoming a go-to source for various interior and exterior residential maintenance. We are consistently striving to make the best experience in any given task. No task is to small whether it be a repair or total remodel. We specialize in basement and crawl space waterproofing. We offer free estimates!!

"This company was on top of getting the work done, provided clear estimates, and followed through with the repairs described. It was a multi-layered project that could have been confusing to track, but they made it easy."

Stephen A on October 2024


Avatar for BEST Roofing & Waterproofing

BEST Roofing & Waterproofing

4.88(
8
)

BEST Roofing & Waterproofing

4.88(
8
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Building Envelope System Techs is a full service waterproofing contractor with over 50 years combined experience in the industry. B.E.S.T. is experienced in all size projects and takes pride in our all our jobs. Our goal is to go above and beyond in order to meet your expectations. Our services range from complex below grade waterproofing to simple pressure washing or gutter cleaning for our local residence. We have experienced roofers, caulkers, and specialty systems to tackle deck coatings and flat roof systems as well.

"Excellent work, done in a timely manner, and left no mess behind. The company was incredibly responsive and professional. Highly recommend!"

Lauren S on August 2022

Building Envelope System Techs is a full service waterproofing contractor with over 50 years combined experience in the industry. B.E.S.T. is experienced in all size projects and takes pride in our all our jobs. Our goal is to go above and beyond in order to meet your expectations. Our services range from complex below grade waterproofing to simple pressure washing or gutter cleaning for our local residence. We have experienced roofers, caulkers, and specialty systems to tackle deck coatings and flat roof systems as well.

"Excellent work, done in a timely manner, and left no mess behind. The company was incredibly responsive and professional. Highly recommend!"

Lauren S on August 2022


I am a self-taught artist, initially drawn to experiment with pastels and colored pencil, and now working with acrylic on canvas. My art speaks for itself.


Accurate Leak Detection

4.67(
3
)

Accurate Leak Detection

4.67(
3
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We are a leak detection company, located in Eugene, OR. We have been finding leaks since 1994. We strive for excellence in the art of leak detection. Customer Service is our number one priority. We have had extensive training in leak detection technology. We save our customers money and time because our leak detection method is non-invasive which eliminates the need to dig up large areas in yards, driveways or patios. There is also less damage caused to interior spaces such as walls or floors. Our leak detection method leads to lower cost in repairs for our customers. Accurate Leak Detection wants to be your partner by helping resolve your concealed leak dilemma.

We are a leak detection company, located in Eugene, OR. We have been finding leaks since 1994. We strive for excellence in the art of leak detection. Customer Service is our number one priority. We have had extensive training in leak detection technology. We save our customers money and time because our leak detection method is non-invasive which eliminates the need to dig up large areas in yards, driveways or patios. There is also less damage caused to interior spaces such as walls or floors. Our leak detection method leads to lower cost in repairs for our customers. Accurate Leak Detection wants to be your partner by helping resolve your concealed leak dilemma.

Showing 1-10 of 18
Basement Waterproofing questions, answered by experts

No, you don’t want your crawl space to be wet because water and even moisture in the air under your home can attract insects and rodents, decrease your indoor air quality, increase your energy bills, promote mold growth, and even lead to structural damage. If you notice any signs of water or humidity in your crawl space, you should get the issues addressed immediately by contacting a professional. They can remove moisture and will know how to waterproof your basement to prevent ongoing problems.

You should plan on waiting at least a year and ideally two to three years after construction before finishing your basement. This will give the foundation time to settle in response to the weight of your home and the expansion of the surrounding soil. You can then repair your foundation and seal any cracks as needed before finishing it to reduce your risk of future leaks or other issues.

A crawl space encapsulation isn’t always necessary, but it’s a wise choice, especially if you live in an area that sees a lot of precipitation. Sealing a crawl space not only reduces damage caused by moisture, mold, and pests, but it also increases your home’s value. It can also save you money by reducing energy bills and avoiding costly repairs for structural or foundation damage.

Yes, these services often increase home value by preventing moisture-related issues and enhancing the usable space in basements or crawlspaces.

You don’t always need to install a dehumidifier in your encapsulated crawl space, but it might be a good idea in certain instances. If you notice obvious signs of condensation, mold, or musty smells permeating from your crawl space, a dehumidifier can help. It’s ideal for homes in humid areas.

In a worst case scenario, structural damage like rust on metal beams, rotting wood, and swelling on doors and windows can signal moisture problems that would benefit from a dehumidifier.

The Monroe, OR homeowners’ guide to basement waterproofing services

From average costs to expert advice, get all the answers you need to get your job done.

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