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  • Average homeowner rating star icon4.3
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  • Verified reviews icon61
    Verified foundation repairs reviews

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Avatar for The Real Seal LLC
The Real Seal LLC
5.0(
252
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationFoundation Drainage - Install or ReplaceConcrete Foundation - Repair+1 more

Serving Markham, IL and surrounding areas

Approved

In business since 2011

Free estimates

Warranties offered

"All Images Videos Shopping News Maps Web Forums Books Flights Finance Search tools Feedback Image from therealsealllc.com Sponsored therealsealllc.com [*** Link removed ***] › foundation › repair The Real Seal, LLC Free Inspection & Estimate — Full-Service Foundation Repair & Leveling. Don't Wait Until Its Too Late. Call Us Today! Your... About Us Service Area Foundation Crack Repair Schedule An Appointment Schaumburg · Estes Avenue Sponsored Acculevel [*** Link removed ***] Foundation Repair Near Me | Family Owned Since 1996 Acculevel Is Your Local Top Rated Foundation Repair And Waterproofing Company. Call Now. Acculevel Is Your Top Rated Foundation Repair Service Provider. Contact Now... Sponsored safeseal.net [*** Link removed ***] › foundation › repair Safe Seal | Foundation Repair Ensure Your Home's Fondation Remains Intact All Year Long. Contact Us Now For A Quote! Call (877) 408-4213 Real Seal Basement Waterproofing & Foundation Repair 4.9 (395) Waterproofing company in Schaumburg, Illinois ‧ Closed Thumbnail Image 69+ OverviewReviewsPhotosBy ownerServicesAbout Reviews from the web angi.com 5/5 238 reviews Facebook 4.9/5 45 votes HomeAdvisor 4.7/5 34 reviews Google review summary 4.9 (396) Reviews All job60 work41 estimate36 technician28 +6 Sort by Most relevant Newest Highest Lowest Lance Higginbotham 3 reviews Extremely professional, honest, kind, prompt and affordable. Some supports for the I beams in our crawlspace collapsed...I called around requesting help from various companies and they were the only ones who agreed to come out and look at … More Vincent Hartogh 5 reviews·2 photos 2 weeks ago NEW We had a pretty gnarly, odd-sized window in our basement that had to be cut out and replaced. Real Seal came in with a competitive, no-nonsense quote. We had an excellent experience with day-of execution as well, clean and efficient. Would recommend. Photo 1 in review by Vincent Hartogh Photo 2 in review by Vincent Hartogh Real Seal Basement Waterproofing & Foundation Repair (Owner) 2 weeks ago Hi Vincent, thank you for your glowing review. We're pleased to learn that you were satisfied with your experience with our company! We'll be here for you in the future if you encounter the need. Jennifer Beckrich 4 reviews a week ago NEW Our technician, Salvador, was excellent! Great communication before and during the repair, arrived on time, and was excellent to work with. The Real Seal was the best decision for high quality products and an excellent results. Great value … More Real Seal Basement Waterproofing & Foundation Repair (Owner) 6 days ago Good morning Jennifer, thank you for your glowing review! We're sincerely pleased that you had a wonderful experience with The Real Seal. We strive to make our clients interactions with us as honest and seamless as possible. We'll share your input with Salvador. He loves getting that feedback. The Real Seal Team Beth Thompson 4 reviews·7 photos 6 months ago We were very impressed with our estimator who heard our concerns about preserving our newly-renovated basement bathroom while installing drain tile and a new sump pump. He came up with a solution that we could live with! The installation … More Photo 1 in review by Beth Thompson Photo 2 in review by Beth Thompson Photo 3 in review by Beth Thompson Photo 4 in review by Beth Thompson Real Seal Basement Waterproofing & Foundation Repair (Owner) 5 months ago Good afternoon Beth, we are pleased to learn about your positive experience. We continually abide by a set of core values that we share with our clients in our interactions. We'll be sure to share your kind words with all on our team that were involved with your project. Regards, The Real Seal Team Angie's List [*** Link removed ***] › companylist The Real Seal LLC Reviews - Schaumburg, IL The Real Seal staff is professional, courteous and on time. They gave accurate estimates, time frames and provided real solutions. Replacing the sump pit ... 5.0 (238) The Real Seal LLC [*** Link removed ***] › rev... Reviews Service provided by The Real Seal was outstanding. A specialist visited our home to evaluate the project and provided quote that was an outstanding price. The ... People also ask What are the disadvantages of basement waterproofing? Is basement waterproofing worth it? Is it better to repair foundation cracks from inside or outside? What is the return on investment for waterproofing a basement? Feedback Facebook · Real Seal Basement Waterproofing & Foundation Repair 1.8K+ followers Real Seal Basement Waterproofing & Foundation Repair Real Seal Basement Waterproofing & Foundation Repair, Schaumburg, Illinois ... Rating · 4.9 (60 Reviews). Real Seal Basement Waterproofing & Foundation Repair. 4.9 (45) HomeAdvisor [*** Link removed ***] › ra... The Real Seal, LLC | Schaumburg, IL 60193 The Real Seal did excellent work and completed my windows in one day. I would highly recommend them for foundation/egress window work. 4.5 ... 4.7 (34) Better Business Bureau [*** Link removed ***] › chicago › r... The Real Seal | Reviews | Better Business Bureau® Profile The people at Real Seal are great. They are prompt, professionally trained in basement and foundation waterproofing and repair, and very reasonable prices. I ... Videos 1:01 0:59 0:58 Feedback Angie's List [*** Link removed ***] › companylist The Real Seal LLC Reviews - Schaumburg, IL They were professional and friendly and patiently answered my many questions. Their response time for returning phone calls was very prompt. The final repair ... 5.0 (238) Better Business Bureau [*** Link removed ***] › profile › th... The Real Seal | Better Business Bureau® Profile The Real Seal was the best decision for high quality products and an excellent results. Great value for the service received. ******** completed the service ... The Real Seal LLC [*** Link removed ***] Foundation Repair, Basement Waterproofing, & Concrete Leveling ... The Real Seal Offers Crawl Space Repair, Foundation Repair, Basement Waterproofing, & Concrete Leveling in the Chicagoland Area. Free Estimates! About Service Area Reviews Tinley Park Foundation Waterproofing Real Seal Logo Foundation Crack Repair Reddit · r/ChicagoSuburbs 20+ comments · 1 year ago Can you recommend basement waterproofing company? US Waterproofing’s quote matches the cost of a new SUV, and Perma-Seal is … low. Can anyone recommend anyone else? Ryan at Forever-Dry Basement. I believe he used to work for US Waterproofing but his quote ... More Top answer · 5 votes I had my basement done by US Waterproofing about 20 years ago and I have to say it was done ... More 8 votes People also search for Real seal basement waterproofing & foundation repair reviews youtube Real seal basement waterproofing & foundation repair reviews consumer Real seal basement waterproofing & foundation repair reviews near Real seal basement waterproofing & foundation repair reviews bbb The Real Seal Basement waterproofing Chicago Lance Higginbotham 3 reviews Extremely professional, honest, kind, prompt and affordable. Some supports for the I beams in our crawlspace collapsed...I called around requesting help from various companies and they were the only ones who agreed to come out and look at the issue. They also fixed a gnarly, displaced foundation crack with a push pier. The contractors were kind and cleaned up thoroughly after their job was complete. Highly recommend them to anyone with foundation issues in Chicagoland."
Before and After Crack Repair
I Beam Supports
Polyjacking in Darien
Our Carbon Fiber Straps Repair Before, During, and After
Crack repaired with Carbon Fiber Staples

+39

Response time10 hrs
351 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for U.S. Waterproofing
U.S. Waterproofing
4.2(
597
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationFoundation Drainage - Install or Replace

Serving Markham, IL and surrounding areas

Approved

In business since 1957

Free estimates

Warranties offered

"Called company on Monday and got an appointment for an inspection on Wednesday. That following Monday, the technician arrived and went through each step is sealing off the concrete foundation to the water leak. The fix worked well and was put to the test with the recent record rains. Not one drop of water came into the basement."
Radon Mitigation
Radon Mitigation
Basement Waterproofing
Basement Waterproofing
Response time1 day
Response rate100%
32 neighbors recently requested a quote
Avatar for The Real Seal, LLC
The Real Seal, LLC
4.5(
38
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationConcrete Foundation - RaiseConcrete Foundation - Repair+1 more

Serving Markham, IL and surrounding areas

Approved

In business since 2011

Free estimates

Warranties offered

"The worker who came over saw my situation and unoffically suggested a repair that would be cheap for me rather than have him and his crew come out and charge me a few thousand. I appreciated that he wanted what was best for me and not necessarily best for his company."
 Interior Foundation Crack Repair
Exterior Drain Tile System
 PHCC 1730 Battery Backup System w/ 1033 sump pump
 Interior Foundation Crack Repair
Cut-out of Interior Drain Tile System

+74

Response time10 hrs
40 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Chicago Basement Systems
Chicago Basement Systems
5.0(
8
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationConcrete Foundation - RepairFoundation Drainage - Install or Replace+1 more

Serving Markham, IL and surrounding areas

Approved

In business since 2005

Free estimates

Warranties offered

"I would like to thank Mariano and crew from Chicago Basement Systems for the very efficient work they performed in my home crawl space. They replaced my failed sump pump and drain tile; installed a Sani-Dry Sedona dehumidifier; installed a backup battery; installed steel beams and piers; installed a waterproofing membrane on the crawl space floor; and encapsulated the entire crawl space. Now I don't smell odors seeping from my crawl space, and my house no longer shakes when cars drive over the city speed bump outside my house. Also, I can now use my clean dry crawl space for extra storage. Thank you Chicago Basement Systems for peace of mind knowing that this project has a lifetime transferrable warranty. I highly recommend Chicago Basement Systems for crawl space repairs!"
Crack Repair Before
Crack Repair After
101 neighbors recently requested a quote
Avatar for 1st Rate Construction
1st Rate Construction
5.0(
2
)
Concrete Foundation - RepairPoured Concrete Wall - Repair

Serving Markham, IL and surrounding areas

Approved

In business since 2012

Free estimates

Credit card accepted

We pride ourselves on our extreme professionalism and attention to detail. Our customer satisfaction guarantee assures you that we won't leave your property until you are completely satisfied with our work. As a locally owned and operated business you can trust that we will treat your home as we would treat our own. Give us a call today, and we look forward to working with you!

1st Rate Construction
3 neighbors recently requested a quote
Avatar for MasonMasters
MasonMasters
3.7(
3
)
Poured Concrete Wall - RepairConcrete Foundation - Repair

Serving Markham, IL and surrounding areas

Approved

🏗️ Welcome to MasonMasters! 🏗️\n\nYour trusted experts in masonry repair and coatings. From restoring worn surfaces to giving your walls a fresh, durable finish, we specialize in quality workmanship that lasts.\n\n✅ Repairs & Coatings\n✅ Residential & Commercial Projects\n✅ Reliable, Professional Service\n\nLet us help you transform and protect your property—because every wall deserves a master touch.\n\n📞 Contact us today and see the MasonMasters difference!\n

43 neighbors recently requested a quote
Avatar for M3 Construction Group
M3 Construction Group
New to Angi
Concrete Foundation - RaiseConcrete Foundation - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation+1 more

Serving Markham, IL and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

As a Licensed General Contractor & Masonry Specialist, with a focus on precision and structural integrity, I provide specialized masonry and restoration services designed to protect your investment. Whether it is a historic restoration or a modern repair, I combine technical expertise with high-quality craftsmanship to ensure your building stands the test of time.\nOur Core Services:\n• Masonry & Tuckpointing: Expert brick and stone repair, chimney rebuilding, and precision mortar matching.\n• Foundation & Waterproofing: Comprehensive crack repair and moisture barriers to keep your structure stable and dry.\n• Demolition: Safe, controlled deconstruction and site preparation for any renovation project.\n• Safety First: I am an EPA-certified Lead Renovator, ensuring all work on older properties is handled safely and legally.

Apartment Hall Remodel
Apartment Hall Remodel
Apartment Hall Remodel
Apartment Hall Remodel
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Showing 1-10 of 263
Foundation Repair questions, answered by experts

A leak under your foundation from a water supply line or sewage line is likely to lead to water pooling on certain areas of your property during rainfall, abnormally fast-growing or green grass in certain sections of your lawn, and differential settlement of your foundation, which can result in large foundation cracks, windows and doors failing to operate properly, a wavy or sloping roofline, or damages or irregularities in your interior walls, including cracks and bulging. If it’s a plumbing line embedded in your slab, you’ll also likely notice above-average water bills.

Not all cracks in the basement floor signal foundation problems. As the house settles, you’ll notice very thin hairline cracks, which you don’t need to worry about. Cracks that are 1/8 inch or wider should require sealing, while ones that are 1/2 inch or wider require leveling. However, if you have cracks in your basement floor with heaving, you should call a pro to assess the situation. Heaving can lead to uneven flooring, structural issues, and foundation problems.

Periodic inspections and addressing drainage issues prevent further damage.

Most single-story homes don't have foundations strong enough to support a second story, but they can be reinforced for an addition. A structural engineer can assess your foundation and what needs to be done to get it ready. They'll look at any cracks or unevenness in your current foundation and consider any special framing or beams your home needs, especially if it’s in a high-wind or hurricane area.

“To support a second story, many structural engineers will require that you install additional concrete piers in the crawlspace,” says Tschudi. “This involves hand excavating, pouring a large concrete footing—usually with specially coated rebar—and then building concrete piers right up to the girders.”

The best way to determine if ceiling cracks are structural is to hire a ceiling contractor to inspect the cracks and provide a professional opinion. That said, you might be able to make an educated guess based on the size and appearance of the crack. Larger cracks, cracks accompanied by sagging or discoloration, and cracks that travel from the ceiling down the walls are all signs of structural issues.

The Markham, IL homeowners’ guide to foundation repairs

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