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  • Average homeowner rating star icon4.9
    Average homeowner rating
  • Verified reviews icon18
    Verified basement waterproofing services reviews

Verified Reviews for Basement Waterproofing pros in Sandwich, IL

*The Angi rating for Basement Waterproofing companies in Sandwich, 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 Sandwich, 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 October 28, 2025

Find Basement waterproofing pros in Sandwich

Avatar for Perma-Seal Basement Systems

Perma-Seal Basement Systems

412 Rockwell Ct
4.43(
1,404
)
•Approved Pro

Perma-Seal Basement Systems

412 Rockwell Ct
4.43(
1,404
)
•Approved Pro
Customers say: Super punctual
884 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.

"Jose and the team did a great job. Very professional and communicative. We're happy with the result and would recommend them."

ELAINE O on September 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.

"Jose and the team did a great job. Very professional and communicative. We're happy with the result and would recommend them."

ELAINE O on September 2025

Avatar for U.S. Waterproofing

U.S. Waterproofing

81 Remington Rd
4.30(
572
)
•Approved Pro

U.S. Waterproofing

81 Remington Rd
4.30(
572
)
•Approved Pro
Customers say: Super punctual
244 local quotes requested
68 years of experience

Basement waterproofing and foundation repair company. Family owned since 1957 with over 300,000 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 owned since 1957 with over 300,000 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.

720 Terry Avenue
4.76(
101
)
•Approved Pro

Everseal Basement, Inc.

720 Terry Avenue
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 CrackXperts

CrackXperts

227 Ashley Ct
No reviews yet

CrackXperts

227 Ashley Ct
No reviews yet
7 years of experience

We are the CrackXperts. We specialize in exterior/interior basement crack repair, sump pumps/backup pumps, underground downspout and sump pump discharge installation as well as spray foam sealing insulation. We offer transferable warranties for our work from lifetime warranties on our crack repairs to manufactory warranties on our sump pumps. We have over 10 years of experience.

We are the CrackXperts. We specialize in exterior/interior basement crack repair, sump pumps/backup pumps, underground downspout and sump pump discharge installation as well as spray foam sealing insulation. We offer transferable warranties for our work from lifetime warranties on our crack repairs to manufactory warranties on our sump pumps. We have over 10 years of experience.

Mold Squad Restoration

601 E Baltimore St
No reviews yet

Mold Squad Restoration

601 E Baltimore St
No reviews yet
9 years of experience

Mold Squad Restoration & Contracting LLC is a full service Contracting Company that specializes in many phasis of General Construction, Water Damage Restoration, and Home Remodeling and Repair. Our Restoration Division consist of: Mold Removal & Remediation, Water Damage Cleanup & Restoration, Fire Damage Cleanup & Restoration, Flood Mitigation, Structural Drying, Asbestos Abatement and offer other services like: Basement/Foundation Waterproofing. Our Construction Division Consists of: Additions New Construction (Home, Garage, Metal Buildings) Bathroom Remodeling Kitchen Remodeling Basement Remodeling Drywall Installation Interior Painting Flooring (Tile, Laminate, Vinyl, Hardwood) Demolition Load Bearing Wall Removal and LVL Beam Install Cabinets, Vanities, Countertops. And much much more We believe that small companies do the best quality work since we have to make a name for ourselves. All of our projects are managed by our owner. All projects are finished once the Homeowner Approves the Quality and Professionalism. Credentials: 1. Fully Insured and Bonded. 2. Professional Quality. 3. Great Reputation with Realtors, Home Investors, Insurance Agents and Several Home Owners. 4. Trustworthy. 5. Hardworking and Dedicated.

Mold Squad Restoration & Contracting LLC is a full service Contracting Company that specializes in many phasis of General Construction, Water Damage Restoration, and Home Remodeling and Repair. Our Restoration Division consist of: Mold Removal & Remediation, Water Damage Cleanup & Restoration, Fire Damage Cleanup & Restoration, Flood Mitigation, Structural Drying, Asbestos Abatement and offer other services like: Basement/Foundation Waterproofing. Our Construction Division Consists of: Additions New Construction (Home, Garage, Metal Buildings) Bathroom Remodeling Kitchen Remodeling Basement Remodeling Drywall Installation Interior Painting Flooring (Tile, Laminate, Vinyl, Hardwood) Demolition Load Bearing Wall Removal and LVL Beam Install Cabinets, Vanities, Countertops. And much much more We believe that small companies do the best quality work since we have to make a name for ourselves. All of our projects are managed by our owner. All projects are finished once the Homeowner Approves the Quality and Professionalism. Credentials: 1. Fully Insured and Bonded. 2. Professional Quality. 3. Great Reputation with Realtors, Home Investors, Insurance Agents and Several Home Owners. 4. Trustworthy. 5. Hardworking and Dedicated.

Avatar for Everseal Basement

Everseal Basement

720 Terry Ave
4.89(
9
)

Everseal Basement

720 Terry Ave
4.89(
9
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

basement waterproofing

"We are so impressed with Everseal. They installed a sump pump and interior drainage tiles in our basement in March of 2021. The job took only four days. The employees worked extremely hard to install the pump, interior drain tiles and window well drains. The young men, who removed debris from the basement in buckets and returned with fresh cement, literally ran in and out of the house to complete the job. They were amazing. They then brought their own hose to wash down any residue on our sidewalk and driveway. They took great care to keep the dirt and dust to a minimum. As they broke up the concrete floor, they used a powerful exhaust fan that vented to the outside through one of our basement windows. For additional protection, they wrapped the furnace with plastic sheets and hung plastic sheets around the basement enclosing the work area. They then made a tunnel with plastic from the basement door to the upstairs front door. Yes, there was dust that reached the upstairs. But, without their careful concern for our home, it could have been much worse. After the project was finished, we washed our walls upstairs and they were fine. The dust that reached the upstairs was easily cleaned.   They were price competitive and always went the extra mile to answer our questions.  A month after the installation, they returned to install a gasket and aluminum strips around the flange in the area where we do occasional woodworking. They did not charge for this service. And, they kept a vacuum operating to capture the dust while they were drilling the small holes in the concrete. The results look great. They also removed their shoes before entering our home and then wore booties to keep the dirt in the basement. Again, it is their attention to detail that sets them apart from others.  Everseal is a top notch company and deserves an A++ rating!"

Edward S on April 2021

basement waterproofing

"We are so impressed with Everseal. They installed a sump pump and interior drainage tiles in our basement in March of 2021. The job took only four days. The employees worked extremely hard to install the pump, interior drain tiles and window well drains. The young men, who removed debris from the basement in buckets and returned with fresh cement, literally ran in and out of the house to complete the job. They were amazing. They then brought their own hose to wash down any residue on our sidewalk and driveway. They took great care to keep the dirt and dust to a minimum. As they broke up the concrete floor, they used a powerful exhaust fan that vented to the outside through one of our basement windows. For additional protection, they wrapped the furnace with plastic sheets and hung plastic sheets around the basement enclosing the work area. They then made a tunnel with plastic from the basement door to the upstairs front door. Yes, there was dust that reached the upstairs. But, without their careful concern for our home, it could have been much worse. After the project was finished, we washed our walls upstairs and they were fine. The dust that reached the upstairs was easily cleaned.   They were price competitive and always went the extra mile to answer our questions.  A month after the installation, they returned to install a gasket and aluminum strips around the flange in the area where we do occasional woodworking. They did not charge for this service. And, they kept a vacuum operating to capture the dust while they were drilling the small holes in the concrete. The results look great. They also removed their shoes before entering our home and then wore booties to keep the dirt in the basement. Again, it is their attention to detail that sets them apart from others.  Everseal is a top notch company and deserves an A++ rating!"

Edward S on April 2021

Avatar for Umbrella Basement Waterproofing

Umbrella Basement Waterproofing

823 N 11th St
5.00(
1
)

Umbrella Basement Waterproofing

823 N 11th St
5.00(
1
)
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Umbrella Basement Waterproofing has been waterproofing in areas like yours for over thirteen years. Our basement experts have the skills to fix your basement problems quickly and effectively. No basement is too big or too small for us to fix and we work to keep your basement dry all of the time. We offer a lifetime guarantee on all of our basement waterproofing services.

"It went quickly, on time, and very neat."

Paul B on May 2023

Umbrella Basement Waterproofing has been waterproofing in areas like yours for over thirteen years. Our basement experts have the skills to fix your basement problems quickly and effectively. No basement is too big or too small for us to fix and we work to keep your basement dry all of the time. We offer a lifetime guarantee on all of our basement waterproofing services.

"It went quickly, on time, and very neat."

Paul B on May 2023

Showing 1-10 of 28
Basement Waterproofing questions, answered by experts

Statistics show that 98% of basements will experience some form of water damage over time. However, that doesn’t mean all basements will experience severe flooding. The best way to prevent a water-damaged basement is to keep up with home maintenance and have proper drainage installed outside your home to direct water away from the foundation. You can also consider building a flood wall around the house if you live in a flood-prone area.

Access to commercial-grade products and equipment, ensuring thorough coverage and long-lasting protection.

Mold and mildew are always a primary risk with any water damage, but it’s not guaranteed that mold will grow. The chances of mold growth are dependent on many factors, such as the severity of the damage and how quickly the area was cleaned up and dried out—that’s why responding to water damage immediately is imperative. If you suspect you have mold and mildew growth, you should talk to a local mold removal expert .

Basements are commonly converted into game rooms. The potential challenges you may run into include controlling moisture, working with low ceilings, limited natural light, and the need for additional electrical or HVAC work. Addressing these issues can add to the total cost, but it ensures a comfortable and functional space.

Crawl space encapsulation can make repairs more complicated, particularly if you have plumbing or wiring surrounding your crawl space area. Additionally, some home designs benefit from the additional airflow that crawl spaces with vents provide. Vents are no longer an option after encapsulation. Always talk to your crawl space contractor to ensure the pros outweigh the cons before investing in the installation.

The Sandwich, 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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