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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 04, 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
885 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
250 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 AccuLevel, Inc. - Rochelle

AccuLevel, Inc. - Rochelle

9495 North Waldron Road
4.46(
166
)
•Approved Pro

AccuLevel, Inc. - Rochelle

9495 North Waldron Road
4.46(
166
)
•Approved Pro
Customers say: Quality work
222 local quotes requested
29 years of experience

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.

"Get review "

David M on September 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.

"Get review "

David M on September 2025

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 local quotes requested

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

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.

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

Showing 1-10 of 29
Basement Waterproofing questions, answered by experts

The best way to waterproof a basement is to install a properly functioning gutter system and a French drain around the outside of the foundation. The best solution for your home could involve other waterproofing methods that resolve the problem unique to your situation. Depending on your soil type, climate, and other factors, that could include sealing, landscape alteration, interior drainage systems, and more.

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.

Generally, moisture barrier padding costs $0.75 to $1.50 per square foot, varying by brand and mix. That’s a lot more than standard padding, which runs $0.25 to $0.90 per square foot. The price difference between these two options might seem steep, but think of it as insurance against future carpet replacement costs and subfloor damage. If you have pets or kids, that extra investment in high-risk areas like your living room often pays off.

Rigid foam board insulation is one of the safest insulation materials for basement walls. The panels offer a moisture barrier to prevent mold and mildew build-up. At the same time, this material is also fire-resistant, so you don’t have to worry as much about a fire breaking out as you would with spray foam insulation. 

If you set up a dehumidifier, it will usually dry out your wet crawl space within 12 to 24 hours. Once the space is dry, it’s a good idea to take preventative measures to keep it dry. These include installing a French drain or other exterior foundation drainage system, installing a sump pump in the crawl space, and installing a vapor barrier in addition to leaving the dehumidifier running.

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