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  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon255
    Verified basement waterproofing services reviews

Verified Reviews for Basement Waterproofing pros in Posen, IL

*The Angi rating for Basement Waterproofing companies in Posen, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.

*The HomeAdvisor rating for Basement Waterproofing companies in Posen, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.

Last update on December 09, 2025

Find Basement waterproofing pros in Posen

Avatar for U.S. Waterproofing

U.S. Waterproofing

4.51(
449
)
•Approved Pro

U.S. Waterproofing

4.51(
449
)
•Approved Pro
Customers say: Super punctual
181 local quotes requested
68 years of experience

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

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 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

Avatar for Perma-Seal Basement Systems

Perma-Seal Basement Systems

4.56(
1,161
)
•Approved Pro

Perma-Seal Basement Systems

4.56(
1,161
)
•Approved Pro
Customers say: Super punctual
1053 local quotes requested
46 years of experience

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.

"The crew was great. Communication was excellent and the work was completed on time. Workers cleaned up well after job each day. I would recommend. The 2nd day they noticed bathroom fan ventilation was not installed in our 20+ year addition. That work is scheduled for the near future. Thanks. Great work."

Eddie B 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.

"The crew was great. Communication was excellent and the work was completed on time. Workers cleaned up well after job each day. I would recommend. The 2nd day they noticed bathroom fan ventilation was not installed in our 20+ year addition. That work is scheduled for the near future. Thanks. Great work."

Eddie B on December 2025

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
110 local quotes requested

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 l&P Basement Waterproofing LLC Bonded and Insured

l&P Basement Waterproofing LLC Bonded and Insured

5.00(
6
)

l&P Basement Waterproofing LLC Bonded and Insured

5.00(
6
)
Customers say: Quick response
Free onsite estimate

Drain Tile Systems Inside And Outside Foundation Crack Repair Window Wells Sump Pumps Downspout And Discharge Extencion

"Pedro was amazing! Responsive, prompt, informative, and clean. Highly recommend!"

Mollie L on May 2024

Drain Tile Systems Inside And Outside Foundation Crack Repair Window Wells Sump Pumps Downspout And Discharge Extencion

"Pedro was amazing! Responsive, prompt, informative, and clean. Highly recommend!"

Mollie L on May 2024

Avatar for RK Masonry and Tuckpointing

RK Masonry and Tuckpointing

No reviews yet

RK Masonry and Tuckpointing

No reviews yet
30 years of experience

RK Masonry provides stone & brick masonry services for homeowners of Chicago, Chicago suburbs and NW Indiana. We're experts in foundation repair, porch repair, fireplace installation & refinishing, cultured stone & stone veneer, chimney repair, brick mailboxes, stone mailboxes, masonry pillars, outdoor kitchens & patios, interior masonry accents and refinishing, porch repair and retaining walls. We've been in business over 20 years, and we still love what we do: leveraging the beauty, value and durability of brick and stone for the Chicagoland homeowner. We're owner-operated and family-owned. We have hundreds of happy customers and think you'll appreciate the RKMAT difference, too!

RK Masonry provides stone & brick masonry services for homeowners of Chicago, Chicago suburbs and NW Indiana. We're experts in foundation repair, porch repair, fireplace installation & refinishing, cultured stone & stone veneer, chimney repair, brick mailboxes, stone mailboxes, masonry pillars, outdoor kitchens & patios, interior masonry accents and refinishing, porch repair and retaining walls. We've been in business over 20 years, and we still love what we do: leveraging the beauty, value and durability of brick and stone for the Chicagoland homeowner. We're owner-operated and family-owned. We have hundreds of happy customers and think you'll appreciate the RKMAT difference, too!

Waterstop systems inc

No reviews yet

Waterstop systems inc

No reviews yet

A family owned company specializing in residential, commercial and industrial roofing, waterproofing and sealants. Fully licensed, insured and bonded. Diverce staff that is bilingual and ready to start working

A family owned company specializing in residential, commercial and industrial roofing, waterproofing and sealants. Fully licensed, insured and bonded. Diverce staff that is bilingual and ready to start working

Avatar for Area Wide Waterproofing

Area Wide Waterproofing

5.00(
6
)

Area Wide Waterproofing

5.00(
6
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We are a team of experienced waterproofing experts specializing in foundation crack repairs and many other waterproofing needs. Your business and trust is important to us. Our professional team continually exceeds our client's expectations and is ready to serve.

"Fast, quick and clean."

Jeff T on February 2023

We are a team of experienced waterproofing experts specializing in foundation crack repairs and many other waterproofing needs. Your business and trust is important to us. Our professional team continually exceeds our client's expectations and is ready to serve.

"Fast, quick and clean."

Jeff T on February 2023

Avatar for Mr D's waterproofing and construction inc.

Mr D's waterproofing and construction inc.

5.00(
3
)

Mr D's waterproofing and construction inc.

5.00(
3
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We have over 20 years of combined experience, ex employees of big named brand companies offering the same services, the same material, at a better price. Family owned buisness.

"Well so far so good. Must make sure gutter in area is cleaned out also."

Louie L on October 2019

We have over 20 years of combined experience, ex employees of big named brand companies offering the same services, the same material, at a better price. Family owned buisness.

"Well so far so good. Must make sure gutter in area is cleaned out also."

Louie L on October 2019

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Basement Waterproofing questions, answered by experts

It’s not the number of weep holes that should be of concern to builders but rather their spacing. Weep holes are usually spaced anywhere between 16 inches on center when using round tubes or wicking materials and 24 inches on center when using open-head joints. This is a more conservative spacing than the 33-inch maximum spacing on center that’s mentioned in the International Residential Code. All in all, the total number of weep holes a brick exterior should have will depend on the size of the structure.

Alternatives to gutter systems include rain chains and drip edges, which work to disperse rain coming off of your roof to a wider section of the ground to prevent erosion and pooling. These options aren’t standalone alternatives to gutters in all parts of the country because they don’t divert water. They’re often reserved for dry climates. On the ground, you can also opt for a drip path or French drain. These can serve as standalone alternatives, but they’re expensive and can detract from your curb appeal and usable yard.

A sewage smell in your crawl space is usually from a damaged or clogged pipe leaking sewer gasses or actual sewage underneath your home, but there are some other common causes. Moisture, from poor or damaged encapsulation or a malfunctioning sump pump, can harbor mold and bacteria, causing a musty smell. Pests can also get stuck in your crawl space and die, which causes a sewage-like odor.

“Basement waterproofing” sometimes refers to applying a waterproof sealant to basement walls, in which case you would use a waterproof paint, often made of latex. However, there are many methods you can use to waterproof a basement, including exterior drainage systems, interior drainage systems, dehumidifiers, and more. As such, the materials you use can vary depending on the methods you use.

If not properly maintained, an underground downspout may damage your home's foundation. A clogged downspout can back up, causing water to pool around the base of your home and seep into the foundation. Regular inspections and maintenance keep your downspout in good working order, preventing damage and protecting your home.

The Posen, IL 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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