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"We had a small leak that only happened in severe rainstorms. Instead of diagnosing this problem the salesperson wa ted to sell us their complete system. They painted a picture of a poorly constructed basement with many problems. We resisted but finally agreed this was s mistake, because the only problem found after tearing up our basement was a dead sump pump and maybe extra weep holes could have been put in the crock. The original basement drainage system was correctly installed to code. Now our perfect basement floor has permanent scars and we are still fighting the concrete dust leftover from the project. The workers also damaged our vinyl siding and stained it with some type of solvent when cleaning areas that were marred during work. They are probably solve severe basement problems, but we were definitely “oversold”. We made a regrettable error in trusting their expertise."

Dan W on February 2025

Everdry is the Nations leader in basement waterproofing with 100,000 satisfied customers! We help you create dry usable space.

"We had a small leak that only happened in severe rainstorms. Instead of diagnosing this problem the salesperson wa ted to sell us their complete system. They painted a picture of a poorly constructed basement with many problems. We resisted but finally agreed this was s mistake, because the only problem found after tearing up our basement was a dead sump pump and maybe extra weep holes could have been put in the crock. The original basement drainage system was correctly installed to code. Now our perfect basement floor has permanent scars and we are still fighting the concrete dust leftover from the project. The workers also damaged our vinyl siding and stained it with some type of solvent when cleaning areas that were marred during work. They are probably solve severe basement problems, but we were definitely “oversold”. We made a regrettable error in trusting their expertise."

Dan W on February 2025


Avatar for Accurate Basement Repair

Accurate Basement Repair

4.99(
37
)
Approved Pro

Accurate Basement Repair

4.99(
37
)
Approved Pro
Customers say: Quality work
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
2000 years of experience

Accurate Basement Repair, LLC, offers a comprehensive, cost-effective repair for your foundation restoration, and waterproofing needs. We do interior drain tile, steel brace wall reinforcements, full excavation, exterior drain tile, crawl space repair, wall rebuilds, underpinning/piering, egress windows, garage foundation repair, and drain tile testing. We are fully licensed, bonded, and insured. We are not a franchise. Accurate Basement Repair, LLC, has Wisconsin's only nationally certified structural repair and waterproofing specialists on staff, and we have over 20 years of experience. Our high quality and well-maintained equipment provides the lowest impact to exterior and interior spaces, and we provide outstanding customer service before, during, and after the repair process. Accurate Basement Repair, LLC, is proud to have an A+ rating with the BBB and over 700 5-star reviews on Google! We are Wisconsin's #1 resource for foundation restoration and waterproofing.

"The senior project specialist was Jimmy. He did a great job of keeping us informed at all stages of the project (interior drain tile installation). Nanod was the plumber who did the final installation of the sump pump set-up and discharge configuration. Nanod did an outstanding job on the route of the discharge piping , having assessed that the originally considered discharge configuration might have adversely affected our neighbor."

Michael S on February 2024

Accurate Basement Repair, LLC, offers a comprehensive, cost-effective repair for your foundation restoration, and waterproofing needs. We do interior drain tile, steel brace wall reinforcements, full excavation, exterior drain tile, crawl space repair, wall rebuilds, underpinning/piering, egress windows, garage foundation repair, and drain tile testing. We are fully licensed, bonded, and insured. We are not a franchise. Accurate Basement Repair, LLC, has Wisconsin's only nationally certified structural repair and waterproofing specialists on staff, and we have over 20 years of experience. Our high quality and well-maintained equipment provides the lowest impact to exterior and interior spaces, and we provide outstanding customer service before, during, and after the repair process. Accurate Basement Repair, LLC, is proud to have an A+ rating with the BBB and over 700 5-star reviews on Google! We are Wisconsin's #1 resource for foundation restoration and waterproofing.

"The senior project specialist was Jimmy. He did a great job of keeping us informed at all stages of the project (interior drain tile installation). Nanod was the plumber who did the final installation of the sump pump set-up and discharge configuration. Nanod did an outstanding job on the route of the discharge piping , having assessed that the originally considered discharge configuration might have adversely affected our neighbor."

Michael S on February 2024


Avatar for Perma-Seal Basement Systems

Perma-Seal Basement Systems

4.56(
1,162
)
Approved Pro

Perma-Seal Basement Systems

4.56(
1,162
)
Approved Pro
Customers say: Super punctual
1979 years of experience
Free onsite estimate

Perma-Seal specializes in protecting the value of your home backed by 45 years of serving the Chicagoland and NW Indiana areas. Our basement waterproofing stops leaks and flooding, our foundation repairs fix settling and bowed walls, and our crawl space solutions control humidity and improve air quality. Our concrete lifting and leveling service offers a reliable, quick, and highly effective way to repair your sunken, cracked driveway, patio, pool deck, or sidewalk for a fraction of the cost of replacement. Additionally, we provide yard drainage solutions, sewer and plumbing services, and home comfort solutions such as air sealing, and insulation to ensure your home remains in top condition. What sets us apart? Our commitment to superior customer service and our solid warranty. Any product or work covered by our warranty is serviced free of charge for the entire warranty period. Choose Perma-Seal for reliable, quality solutions to keep your home safe and comfortable.

"Great job! Delivered exactly what was promised. Efficient and professional. "

Nemura P on December 2025

Perma-Seal specializes in protecting the value of your home backed by 45 years of serving the Chicagoland and NW Indiana areas. Our basement waterproofing stops leaks and flooding, our foundation repairs fix settling and bowed walls, and our crawl space solutions control humidity and improve air quality. Our concrete lifting and leveling service offers a reliable, quick, and highly effective way to repair your sunken, cracked driveway, patio, pool deck, or sidewalk for a fraction of the cost of replacement. Additionally, we provide yard drainage solutions, sewer and plumbing services, and home comfort solutions such as air sealing, and insulation to ensure your home remains in top condition. What sets us apart? Our commitment to superior customer service and our solid warranty. Any product or work covered by our warranty is serviced free of charge for the entire warranty period. Choose Perma-Seal for reliable, quality solutions to keep your home safe and comfortable.

"Great job! Delivered exactly what was promised. Efficient and professional. "

Nemura P on December 2025


"Good work in general; our basement no longer sees water for over 3 years now, which is the most important thing. But there were some real issues: The biggest issue is that USW did not adhere to local electrical codes, and did not arrange for a final inspection of the project. So we didn't find out that it wasn't to code until years later, and now it's a big hassle and minor cost to fix and get the permits. Ask your local gov yourself what you need to do for permits and inspections; don't rely on USW! USW said they would seal any foundation cracks found along the way; they didn't do this until I bugged the warranty dept about it (but they did do it eventually). USW sent someone out for the "annual checkup"... over 2 years after the install. It's a good thing they (eventually) did, because they discovered the backup battery wasn't charging. Now I know to check this stuff better myself. Prices also vary wildly and are kind of negotiable (I'd give more detail but I'm out of space)"

Andrew D on October 2023

Basement waterproofing and foundation repair company. Family operated since 1957 with over 500,000 dry basements. Free consultations. Lifetime warranties available. Award winning company.

"Good work in general; our basement no longer sees water for over 3 years now, which is the most important thing. But there were some real issues: The biggest issue is that USW did not adhere to local electrical codes, and did not arrange for a final inspection of the project. So we didn't find out that it wasn't to code until years later, and now it's a big hassle and minor cost to fix and get the permits. Ask your local gov yourself what you need to do for permits and inspections; don't rely on USW! USW said they would seal any foundation cracks found along the way; they didn't do this until I bugged the warranty dept about it (but they did do it eventually). USW sent someone out for the "annual checkup"... over 2 years after the install. It's a good thing they (eventually) did, because they discovered the backup battery wasn't charging. Now I know to check this stuff better myself. Prices also vary wildly and are kind of negotiable (I'd give more detail but I'm out of space)"

Andrew D on October 2023


Avatar for Gardner Services

Gardner Services

4.92(
12
)
Approved Pro

Gardner Services

4.92(
12
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1996 years of experience

ONE DAY service available. Family owned and operated, since 1996. We are the areas most trusted name in Mold Inspections for Real Estate closings and General Air Quality testing for Mold, Allergens and full spectrum testing. Certified lab results. we perform all levels of Mold Inspections and Air Quality testing. We offer start-to-finish solutions for every project. We guarantee high-quality services for each and every project. Dave is a licensed and certified Mold inspector and has several certifications in air quality assessments from Mainstream Engineering, Prism Analytical, IRI Certified, and member of NORMI. Also licensed as HVAC inspector.

"excellent Sirius health issues were discovered"

Allen J T on July 2024

ONE DAY service available. Family owned and operated, since 1996. We are the areas most trusted name in Mold Inspections for Real Estate closings and General Air Quality testing for Mold, Allergens and full spectrum testing. Certified lab results. we perform all levels of Mold Inspections and Air Quality testing. We offer start-to-finish solutions for every project. We guarantee high-quality services for each and every project. Dave is a licensed and certified Mold inspector and has several certifications in air quality assessments from Mainstream Engineering, Prism Analytical, IRI Certified, and member of NORMI. Also licensed as HVAC inspector.

"excellent Sirius health issues were discovered"

Allen J T on July 2024


Avatar for AccuLevel, Inc. - Rochelle

AccuLevel, Inc. - Rochelle

4.44(
167
)
Approved Pro

AccuLevel, Inc. - Rochelle

4.44(
167
)
Approved Pro
Customers say: Quality work
1996 years of experience
Free onsite estimate

Acculevel is your foundation repair expert, serving Indiana, Illinois, Michigan, Kentucky, and Ohio with over 20 years of experience. Our repairs come with a lifetime warranty. Acculevel begins by evaluating your entire foundation system, checking your property for the signs and causes of foundation failure. From foundation & crawlspace repair to waterproofing & encapsulation systems, Acculevel can help you protect your home-- the most valuable investment you'll ever make.

"The guys that showed up were actually quite nice. They looked at the project, one of the guys showed some concern (about what I don't know) He said he was going to make a phonecall, and when he came back from the truck he said that they couldn't do the job. He said I needed to contact the company --"

Mark H on October 2025

Acculevel is your foundation repair expert, serving Indiana, Illinois, Michigan, Kentucky, and Ohio with over 20 years of experience. Our repairs come with a lifetime warranty. Acculevel begins by evaluating your entire foundation system, checking your property for the signs and causes of foundation failure. From foundation & crawlspace repair to waterproofing & encapsulation systems, Acculevel can help you protect your home-- the most valuable investment you'll ever make.

"The guys that showed up were actually quite nice. They looked at the project, one of the guys showed some concern (about what I don't know) He said he was going to make a phonecall, and when he came back from the truck he said that they couldn't do the job. He said I needed to contact the company --"

Mark H on October 2025


Basement Repair Specialists, LLC

4.54(
34
)
Approved Pro

Basement Repair Specialists, LLC

4.54(
34
)
Approved Pro
Customers say: Quality work
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
2009 years of experience

At Basement Repair Specialists, we liked the idea of giving people a good deal so much that we trademarked it! That’s right, in October 2014 the US Patent and Trademark Office granted Basement Repair Specialists a trademark for our corporate motto “A Great Job at a Great Price®” From our first days in business, Basement Repair Specialists has been committed to offering excellent work at a reasonable price. Treating customers fairly is a part of our company culture, and you will be very happy you selected Basement Repair Specialists for your project. We offer the following services: Repair of failing, leaning, or collapsed basement walls Water control, sump pumps, and general drainage issues Helical piers, resistance piers and other solutions to settling foundations and footings Egress windows Dehumidifiers

"I could not believe what they did in only two days. It is so nice to not have water anymore. The salesman really knew and understood the project and what it would take to get it done."

Faith N on September 2024

At Basement Repair Specialists, we liked the idea of giving people a good deal so much that we trademarked it! That’s right, in October 2014 the US Patent and Trademark Office granted Basement Repair Specialists a trademark for our corporate motto “A Great Job at a Great Price®” From our first days in business, Basement Repair Specialists has been committed to offering excellent work at a reasonable price. Treating customers fairly is a part of our company culture, and you will be very happy you selected Basement Repair Specialists for your project. We offer the following services: Repair of failing, leaning, or collapsed basement walls Water control, sump pumps, and general drainage issues Helical piers, resistance piers and other solutions to settling foundations and footings Egress windows Dehumidifiers

"I could not believe what they did in only two days. It is so nice to not have water anymore. The salesman really knew and understood the project and what it would take to get it done."

Faith N on September 2024


Accurate Basement Repair

4.84(
199
)

Accurate Basement Repair

4.84(
199
)
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers

We are proud to announce being an Angie's List Super Service Award winner! Accurate Basement Repair is South Eastern Wisconsin’s #1 resource for foundation restoration & waterproofing. We offer comprehensive cost-effective repairs and are constantly striving to maintain and provide top customer service. Accurate Basement Repair is Wisconsin's only foundation repair company with a nationally certified structural repair specialist & waterproofing specialist on staff. Check out our website for discounts & educational tools! Award winning.

"Thank you for the expertise and speed of Paul Vaccaro and Tony Burgarino at finding the source and connecting us to the appropriate contractors to solve the complex water basement issue. Especially thank you Tony for calling 2 weeks later to check that everything was corrected! Accurate Basement is the best!!!"

Mary F on April 2022

We are proud to announce being an Angie's List Super Service Award winner! Accurate Basement Repair is South Eastern Wisconsin’s #1 resource for foundation restoration & waterproofing. We offer comprehensive cost-effective repairs and are constantly striving to maintain and provide top customer service. Accurate Basement Repair is Wisconsin's only foundation repair company with a nationally certified structural repair specialist & waterproofing specialist on staff. Check out our website for discounts & educational tools! Award winning.

"Thank you for the expertise and speed of Paul Vaccaro and Tony Burgarino at finding the source and connecting us to the appropriate contractors to solve the complex water basement issue. Especially thank you Tony for calling 2 weeks later to check that everything was corrected! Accurate Basement is the best!!!"

Mary F on April 2022


Avatar for BASEMENT SPECIALISTS INC

BASEMENT SPECIALISTS INC

4.95(
75
)

BASEMENT SPECIALISTS INC

4.95(
75
)
Customers say: Super punctual
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers

Basement Specialist is a company rooted in honesty and quality of work. We are a locally owned company specializing in basement waterproofing, foundation repair, and overall repair and maintenance of the supporting base of your home. At Basement Specialist, we recognize the importance of understanding construction methods and soil conditions of the Metro Area. Our quality reviews speak for themselves; Angie's List members love us!

"Dale was very thorough in his examination of my situation and gave me clear explanations of what was going on. Other firms that quoted the work insisted that the entire basement needed to be done. Dale said that we only need to fix what is leaking. Cost to do that was one third that of other bids. Crew was on time, prompt and thorough. I would definitely use this firm again."

Erich Z on December 2018

Basement Specialist is a company rooted in honesty and quality of work. We are a locally owned company specializing in basement waterproofing, foundation repair, and overall repair and maintenance of the supporting base of your home. At Basement Specialist, we recognize the importance of understanding construction methods and soil conditions of the Metro Area. Our quality reviews speak for themselves; Angie's List members love us!

"Dale was very thorough in his examination of my situation and gave me clear explanations of what was going on. Other firms that quoted the work insisted that the entire basement needed to be done. Dale said that we only need to fix what is leaking. Cost to do that was one third that of other bids. Crew was on time, prompt and thorough. I would definitely use this firm again."

Erich Z on December 2018


Avatar for Dry Otter Basement Waterproofing LLC

Dry Otter Basement Waterproofing LLC

4.94(
68
)

Dry Otter Basement Waterproofing LLC

4.94(
68
)
Customers say: Super punctual
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Angie's List 2012, 2013 and 2014 Super Service Award winner. Servicing Illinois and Wisconsin. Co owners, Nick and Jonathan came together to start a company to serve both Wisconsin and Illinois, where they could utilize their 20 plus years experience assisting consumers with home improvement and development as well as water and air treatment. Their idea was to start a basement waterproofing company-Dry Otter Basement Waterproofing. Their goals are to provide a healthier home for their customers and develop long lasting business relationships but more importantly, friendships. Service area covered: Southern WI and Northern IL. Award wining.Additional email - [email protected].

"Nick and the Dry Otter crew do fantastic work. Everything from beginning to end was top notch. The estimate was true, the work was done well and on time, and the result of the project is perfect. I live on the East Side of Madison and have had water seeping into my basement for years now. Dry Otter trenched all the way around my basement and installed a sump pump. I've been thinking of doing this project for years and met with all of the local companies that do this, and I'm very glad that I picked Dry Otter for the project. I was definitely nervous about possibly having to rip out the existing basement stairs as part of the job, but these guys were able to preserve the existing stairs which saved me from a huge additional cost. I'd recommend anyone to strongly consider this company for a sump pump installation. They answered all of my questions after the job and even sent someone after the project was done to tighten a nut on the water meter that was slowly leaking. Now I'm turning half of my basement into a chill out zone for the kids and keeping the other half as a utility basement. Our house just became way better. Probably the best thing I can say about this crew is that they are honest business people that stand by their work. Expect a job done well, on time, and at a reasonable price."

Josh P on February 2019

Angie's List 2012, 2013 and 2014 Super Service Award winner. Servicing Illinois and Wisconsin. Co owners, Nick and Jonathan came together to start a company to serve both Wisconsin and Illinois, where they could utilize their 20 plus years experience assisting consumers with home improvement and development as well as water and air treatment. Their idea was to start a basement waterproofing company-Dry Otter Basement Waterproofing. Their goals are to provide a healthier home for their customers and develop long lasting business relationships but more importantly, friendships. Service area covered: Southern WI and Northern IL. Award wining.Additional email - [email protected].

"Nick and the Dry Otter crew do fantastic work. Everything from beginning to end was top notch. The estimate was true, the work was done well and on time, and the result of the project is perfect. I live on the East Side of Madison and have had water seeping into my basement for years now. Dry Otter trenched all the way around my basement and installed a sump pump. I've been thinking of doing this project for years and met with all of the local companies that do this, and I'm very glad that I picked Dry Otter for the project. I was definitely nervous about possibly having to rip out the existing basement stairs as part of the job, but these guys were able to preserve the existing stairs which saved me from a huge additional cost. I'd recommend anyone to strongly consider this company for a sump pump installation. They answered all of my questions after the job and even sent someone after the project was done to tighten a nut on the water meter that was slowly leaking. Now I'm turning half of my basement into a chill out zone for the kids and keeping the other half as a utility basement. Our house just became way better. Probably the best thing I can say about this crew is that they are honest business people that stand by their work. Expect a job done well, on time, and at a reasonable price."

Josh P on February 2019

Showing 1-10 of 50
Basement Waterproofing questions, answered by experts

Yes, you can add a bathroom to an unfinished basement, but you’ll want to take proper precautions if doing so. As with any bathroom addition, you’ll need to make sure that it’s approved by local building authorities first. With unfinished basements, you especially need to keep an eye on proper ventilation practices.

Physically, the most challenging part of finishing a basement is installing egress windows or doors when the space is below ground level. Mentally, the hardest part may be envisioning the project and planning around load-bearing and mechanical obstacles.

Flooded basement cleanup can take anywhere from a few days to several weeks, depending on the extent of water damage, the type of water involved, and the need for repairs or mold remediation. Severe cases with structural damage or extensive mold may require longer timelines. Quick action and professional help can speed up the process and reduce overall damage.

Yes, it’s worth it to repair a crawl space foundation, even if the issue seems relatively minor. Foundation problems often get worse and more expensive to fix if you leave them untreated. Additionally, your entire home, from the framing and flooring to the roof system, relies on the foundation for even and level support. Issues with your foundation will almost always manifest as problems in and above your living space, so it’s important to find a solution.

Regular inspections, proper drainage management, and ensuring soil stability help prevent future settlement issues.

The Bristol, WI homeowners’ guide to basement waterproofing services

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