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  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon256
    Verified basement waterproofing services reviews

Find Basement waterproofing pros in Union

Avatar for The Real Seal LLC

The Real Seal LLC

4.98(
224
)
Approved Pro

The Real Seal LLC

4.98(
224
)
Approved Pro
Customers say: True professional
Recommended by 99% of Angi customers
Recommended by 99% of HomeAdvisor customers
14 years of experience

2015, 2016, 2017, 2018, 2019, and 2020 Super Service Award Recipient. Do we ever stop?? NO! We are an HONEST Basement Waterproofing and Foundation Repair company with a simple philosophy: Happy Employees Make Happy Customers. Our customer service is second-to-none. Please call our office to schedule an estimate at (847)-769-8240

"Real Seal are very professional. Came out when they said, sent estimate and set up to have work done in a timely matter. The technician sealed two cracks in our foundation crawl space. Did a excellent job and was very friendly and knowledgable. I will be using them again for another crack."

Pat M on December 2024

2015, 2016, 2017, 2018, 2019, and 2020 Super Service Award Recipient. Do we ever stop?? NO! We are an HONEST Basement Waterproofing and Foundation Repair company with a simple philosophy: Happy Employees Make Happy Customers. Our customer service is second-to-none. Please call our office to schedule an estimate at (847)-769-8240

"Real Seal are very professional. Came out when they said, sent estimate and set up to have work done in a timely matter. The technician sealed two cracks in our foundation crawl space. Did a excellent job and was very friendly and knowledgable. I will be using them again for another crack."

Pat M on December 2024


Avatar for Gardner Environmental Services

Gardner Environmental Services

4.84(
251
)
Approved Pro

Gardner Environmental Services

4.84(
251
)
Approved Pro
Super Service Award
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
32 years of experience

Overview: Gardner Environmental Services is a leading provider of comprehensive environmental solutions, committed to delivering sustainable and innovative services. With a mission to safeguard the planet for future generations, we specialize in offering a range of environmental services designed to meet the evolving needs of our clients. Gardner Environmental Service. Our journey has been marked by a dedication to environmental stewardship, a commitment to excellence, and a continuous pursuit of cutting-edge technologies. Environmental Consulting: Our team of experienced environmental consultants provides strategic guidance on regulatory compliance, sustainability initiatives, and environmental impact assessments.

"Great to work with…. Responded quickly was very thorough "

G S on October 2025

Overview: Gardner Environmental Services is a leading provider of comprehensive environmental solutions, committed to delivering sustainable and innovative services. With a mission to safeguard the planet for future generations, we specialize in offering a range of environmental services designed to meet the evolving needs of our clients. Gardner Environmental Service. Our journey has been marked by a dedication to environmental stewardship, a commitment to excellence, and a continuous pursuit of cutting-edge technologies. Environmental Consulting: Our team of experienced environmental consultants provides strategic guidance on regulatory compliance, sustainability initiatives, and environmental impact assessments.

"Great to work with…. Responded quickly was very thorough "

G S on October 2025


"Excellent honest work!"

Nick O on August 2024

Structural Design Corporation (SDC) is a licensed consulting engineering firm located in Libertyville, Illinois. We have been providing engineering & inspection services since 1979. We are a licensed design firm in the state of Illinois.

"Excellent honest work!"

Nick O on August 2024


Avatar for Atlas Restoration LLC

Atlas Restoration LLC

4.88(
150
)
Approved Pro

Atlas Restoration LLC

4.88(
150
)
Approved Pro
Customers say: Super punctual
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
46 years of experience

With over 40 years of experience, Atlas Restoration LLC offers a wide variety of the most efficient and cutting-edge waterproofing and foundation repair services throughout the Chicagoland area. Our highly trained team provides exceptional service from your initial call to installation. We guarantee each client a custom job-specific repair solution, ensuring you’re entirely satisfied with the outcome. Contact us today to book your appointment for a free estimate—let's get started on your project!

"it was a difficult job to work through the crawl space and they did a nice job and they cleaned up everything well. they were very nice, helpful people."

Patricia T on November 2025

With over 40 years of experience, Atlas Restoration LLC offers a wide variety of the most efficient and cutting-edge waterproofing and foundation repair services throughout the Chicagoland area. Our highly trained team provides exceptional service from your initial call to installation. We guarantee each client a custom job-specific repair solution, ensuring you’re entirely satisfied with the outcome. Contact us today to book your appointment for a free estimate—let's get started on your project!

"it was a difficult job to work through the crawl space and they did a nice job and they cleaned up everything well. they were very nice, helpful people."

Patricia T on November 2025


Avatar for Perma-Seal Basement Systems

Perma-Seal Basement Systems

4.55(
1,167
)
Approved Pro

Perma-Seal Basement Systems

4.55(
1,167
)
Approved Pro
Customers say: Super punctual
46 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.

"I have hired Permaseal to fix my unleveled patio concrete floor that was and still causing rain water to get to my basement, I have paid them $2,014.33 as down payment, they showed up one month later for the job, which is injecting foam under the concrete slab to lift it back to its original correct level. I came back home that day to find out that they have left and that the concrete slab was not only still unleveled, but they cracked it and patched it on multiple locations. I have called their customer care number more than a dozen times in attempt to understand what is going on, and on each occasion, I was told that the project manager was going to contact me back, which never happened until i made the next call, They have finally explained to me over the phone that it was the best they could do and that they could not fix my patio floor. I asked for a refund and did not hear back. I have documented pictures of before and after showing that the job was not done and cancelled the check with the remaining balance. I have not heard anything back from them since then, until i started getting debt collectors' emails on December the 5th from a business called FCR Services."

Sami M 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.

"I have hired Permaseal to fix my unleveled patio concrete floor that was and still causing rain water to get to my basement, I have paid them $2,014.33 as down payment, they showed up one month later for the job, which is injecting foam under the concrete slab to lift it back to its original correct level. I came back home that day to find out that they have left and that the concrete slab was not only still unleveled, but they cracked it and patched it on multiple locations. I have called their customer care number more than a dozen times in attempt to understand what is going on, and on each occasion, I was told that the project manager was going to contact me back, which never happened until i made the next call, They have finally explained to me over the phone that it was the best they could do and that they could not fix my patio floor. I asked for a refund and did not hear back. I have documented pictures of before and after showing that the job was not done and cancelled the check with the remaining balance. I have not heard anything back from them since then, until i started getting debt collectors' emails on December the 5th from a business called FCR Services."

Sami M on December 2025


Avatar for Everseal Basement, Inc.

Everseal Basement, Inc.

4.76(
101
)
Approved Pro

Everseal Basement, Inc.

4.76(
101
)
Approved Pro
Customers say: Quality work
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
10 years of experience

Everseal Basement, Inc., specializes in residential and commercial waterproofing. We are locally owned and operated out of Aurora, IL, offering the best prices and quality service. Customer service is our top priority. Call today for your free estimate!

"Ernesto was great. His guys were prompt and professional, job went well from start to finish. Would recommend 100%."

jeff h on May 2025

Everseal Basement, Inc., specializes in residential and commercial waterproofing. We are locally owned and operated out of Aurora, IL, offering the best prices and quality service. Customer service is our top priority. Call today for your free estimate!

"Ernesto was great. His guys were prompt and professional, job went well from start to finish. Would recommend 100%."

jeff h on May 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
29 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

4.43(
168
)
Approved Pro

AccuLevel, Inc. - Rochelle

4.43(
168
)
Approved Pro
Customers say: Quality work
29 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 job got completed but it wasn’t repaired the way it was originally quoted. The financing offers they had were very helpful to budget for this project. "

Doug H on December 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 job got completed but it wasn’t repaired the way it was originally quoted. The financing offers they had were very helpful to budget for this project. "

Doug H on December 2025


My Property Masters

4.30(
154
)
Approved Pro

My Property Masters

4.30(
154
)
Approved Pro
Customers say: True professional
17 years of experience
Emergency services offered

My Property Masters Inc, is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and responsibility in all of our jobs. We are a locally owned and operated business with more than 10 years of experience serving Northlake and surrounding areas. There is no job too big, or too small for our team. Call today and let us put our experience to work for you!

"Pipe broke and the whole kitchen had to be torn down to the studs and completely rebuilt. Installed new sound deading insulation new cabinets counter tops sink and faucet Plus installed new floor and snd trim They did a beautiful job and I will hire them again . They also cleaned up great "

Craig J on December 2025

My Property Masters Inc, is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and responsibility in all of our jobs. We are a locally owned and operated business with more than 10 years of experience serving Northlake and surrounding areas. There is no job too big, or too small for our team. Call today and let us put our experience to work for you!

"Pipe broke and the whole kitchen had to be torn down to the studs and completely rebuilt. Installed new sound deading insulation new cabinets counter tops sink and faucet Plus installed new floor and snd trim They did a beautiful job and I will hire them again . They also cleaned up great "

Craig J on December 2025

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Basement Waterproofing questions, answered by experts

The primary reason homes have crawl spaces is so the foundation can reach down below the frost line to avoid dangerous soil movement and structural damage when the ground freezes. They’re more popular in colder climates where the ground freezes down to a few feet, and slabs are most popular in warmer areas where there is no frost line. Crawl spaces also provide a space for utility lines to run where they’re at less of a risk of freezing.

No, your basement dehumidifier doesn’t need to be on 24/7. While it’s an excellent tool for tackling damp, musty air, especially in humid seasons, leaving it running nonstop can backfire. Over-drying the space can mess with your sinuses, warp wood, and even crack certain materials. Instead, only use your humidifier when moisture levels rise above 50%, and then give it a break when the humidity levels drop.

Water damage in your home’s foundation is gradual, often beginning with small cracks that let water seep in. Over time, this weakens the foundation, which then allows in more water, causing significant structural damage. This process can take months or years to destroy your foundation, and the repairs can be very costly. Have your foundation inspected regularly to prevent significant damage.

The difficulty of adding a basement to an existing house can vary depending on the house’s location, the size of the basement, and the type and condition of the existing foundation. Adding a basement is a job best handled by the pros, so you’ll need to enlist professional help for this project.

Encapsulation can take the place of crawl space vents since it protects the area from moisture and air all year round. Determining whether you should open or close crawl space vents can be complicated since it often depends on the weather and humidity. Skip this step by investing in crawl space encapsulation whenever possible.

The Union, IL homeowners’ guide to basement waterproofing services

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

What do you need done? We’ll find top pros.
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