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TRUSTED BY MARKHAM, IL HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon95
    Verified basement waterproofing services reviews

Find Basement waterproofing pros in Markham

Avatar for U.S. Waterproofing
U.S. Waterproofing
4.3(
596
)

Serving Markham, IL and surrounding areas

Approved

In business since 1957

Free estimates

Warranties offered

"My sump pump goes off all the time; I think there is a natural spring around my house. Joe Silverberg, my local U.S. Waterproofing rep., has been wonderful in advising me on my sump pump replacement, (which works beautifully by the way and gives me so much peace of mind!), and on sealing cracks in my basement walls. Whenever I have needed him, Joe comes over right away to address the situation. I highly recommend Joe and U.S. Waterproofing, who does excellent work and stands by that work!"
Radon Mitigation
Radon Mitigation
Basement Waterproofing
Basement Waterproofing
Response time1 day
Response rate100%
14 neighbors recently requested a quote
Avatar for Perma-Seal Basement Systems
Perma-Seal Basement Systems
4.4(
1,511
)

Serving Markham, IL and surrounding areas

Approved

Super Service Award Winner

In business since 1979

Free estimates

Emergency services offered

"I must say Victor and his team of professionals from Perma Seal did an emaculent job, explained every little detail to my understanding and l didn't have to keep asking questions..l would definitely recommend him and his team to anyone who needs their home waterproofed, and l will request him and his team if l ever need similar work again..5 STARS TO VICTOR AND HIS TEAM*****"
Thermal imaging
Blower door test
Old insulation removal
New blown insulation
Perma-Seal Attic Insulation

+48

Response time1 day
Response rate94%
60 neighbors recently requested a quote
Avatar for The Real Seal LLC
The Real Seal LLC
5.0(
252
)

Serving Markham, IL and surrounding areas

Approved

In business since 2011

Free estimates

Warranties offered

"My husband and I had a wonderful experience with The Real Seal in July 2024. They fixed a bowing foundation and waterproofed the basement for future finishing. Their team was prompt, respectful, organized and thoroughly educated us on the drainage tile system, installation process and prevention. Thank you, Real Seal for being the flawless first step to our dream basement/family space!"
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
85 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for The Real Seal, LLC
The Real Seal, LLC
4.5(
38
)

Serving Markham, IL and surrounding areas

Approved

In business since 2011

Free estimates

Warranties offered

"I worked with Austin Werner at Real Seal to get some basement sump pump work done. He came out initially and gave me a quote and different options for my basement sump pump. He was very knowledgeable and gave pros and cons of different options. The quote was priced very fairly. They were able to get us on the schedule quickly. On the day off, the Real Seal technician called me the morning to let me know what time they would be here. The job was done very professionally and they answered all my questions. They cleaned up after the install. Highly recommended."
 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
17 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Chicago Basement Systems
Chicago Basement Systems
5.0(
6
)

Serving Markham, IL and surrounding areas

Approved

In business since 2005

Free estimates

Warranties offered

"Devin Rhoades was excellent at explaining in detail about our needs and possibilities in fixing our support wall and encapsulating our crawl space and draining the water away from our house. He was well informed on all aspects of our situation. I would recommend Devin and Chicago Basement Systems to anyone needing help with basements or crawlspace issues."
Crack Repair Before
Crack Repair After
51 neighbors recently requested a quote
Avatar for M3 Construction Group
M3 Construction Group
New to Angi

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
Avatar for High Tech Waterproofing LLC
High Tech Waterproofing LLC
4.7(
63
)

Serving Markham, IL and surrounding areas

In business since 2013

Free estimates

Credit card accepted

"This company understands customer service.  My call was returned immediately and was able to have someone out to issue a quote within days of contact. We received a quote and had the work done within a week.  We have had all the big name companies out to give us quotes and High Tech Waterproofing provided a better option. Their quote was more cost effective, involved no hazardous fumes, no stud removal (that others had requested), and still included a warranty.  I am thankful thankful that I ran across their review on Angie's List. We've yet to have spring rains to test the job done, but I feel very comfortable with our choice.  I would recommend this company to any one.
"
crack repair
crack repair
BEFORE
AFTER
Crawlspace Storage

+1

Recommended by100%of homeowners
Avatar for Reliable Basement Services LLC
Reliable Basement Services LLC
4.7(
208
)

Serving Markham, IL and surrounding areas

In business since 2008

Free estimates

Credit card accepted

"I am in a new construction house and had a water leak in my basement.  The representative came out to evaluate the situation, checked the sump pit, the drain tiles and the exterior for cracks. Turns out the problem had to do with flashing and caulking.  The builder has ultimately fixed the problem.  The representative who came out was very responsive, prompt, courteous and accommodating spending time investigating the possible source of the leak.   While we did not use their services, I was impressed by the thoroughness and effort.   I would highly recommend you have Reliable Basement Services, LLC look at your issue and recommend a solution. Should I ever have need of their service I would not hesitate to use them.
"
Additional Photos
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Additional Photos

+6

Recommended by95%of homeowners
Avatar for Crawlspace / Basement Waterproofing Solution
Crawlspace / Basement Waterproofing Solution
4.4(
256
)

Serving Markham, IL and surrounding areas

In business since 1998

Free estimates

Credit card accepted

"I know of no other contractor who has total customer satisfaction as his top priority like Mr. Flanagan does. He is absolutely the best.
My basement sustained ankle-deep water as the result of an outdoor basement stairwell drain that violently backed up because its circa-1951 drain line led to the street storm sewer (by design). That sewer was overcome with water during a storm in the summer of 2010 that featured a tornado in my western-suburbs area. Soon after pumping the water out of my basement with a mobile pump, the mess prompted me to (once again*) call Mr. Flanagan (*His crawlspace crew had done a beautiful job finishing my dirt-floor crawlspace with a concrete floor and wall insulation a couple of years earlier).
After the basement waterproofing project described in this review was complete, however, I was disappointed with the workmanship: The concrete work looked less-than-professional (out-of-flush with sump flange and the stairwell drain, plus way too many swirl marks and splattering) in the stairwell and basement's appearance areas. In short, it just didn't look like his business's flawless concrete job that was done in my crawlspace just years earlier.
Mr. Flanagan agreed. With no questions asked, he immediately had a different crew come to my home, tear out all of the previously laid concrete and drain lines and replace it with the workmanship that he would expect his crews to use in their own homes. The re-do of the project at least had met my high expectations for its cosmetics. And, of course, I hoped it was a sufficient waterproofing solution for my basement.
Fast forward just a few short years. Affter having perhaps sustaining that 100-year event with the Chicago-area rain storm of April 17-18, 2012, while my neighbors are pumping water out of their basements, mine remains bone dry. Thank you Mr. Flanagan and Crawlspace / Basement Waterproofing Solutions for a job (design and installation) well done. Your basement waterproofing solution indeed deserves an A+.

"
Additional Photos
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Additional Photos

+13

Recommended by90%of homeowners
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Showing 1-10 of 121
Basement Waterproofing questions, answered by experts

No, you don’t want your crawl space to be wet because water and even moisture in the air under your home can attract insects and rodents, decrease your indoor air quality, increase your energy bills, promote mold growth, and even lead to structural damage. If you notice any signs of water or humidity in your crawl space, you should get the issues addressed immediately by contacting a professional. They can remove moisture and will know how to waterproof your basement to prevent ongoing problems.

Covering the dirt floor in your crawl space with a vapor barrier helps insulate the space and improve the air quality in your home. It protects your crawl space from pest infestations, excess moisture, and mold growth. It also makes the crawl space less dusty, which means there’s a lower chance of dust mites breeding and causing allergic reactions in your home.

The most challenging part of finishing a basement is addressing moisture control. Basement waterproofing is an essential task that requires a professional’s skills and knowledge. If you don’t properly waterproof your finished basement, it’ll be vulnerable to dampness, water damage, and mold growth. Ensuring proper insulation and ventilation to combat these issues while meeting building codes adds complexity to your remodeling project.

The purpose of crawl space encapsulation is to prevent mold by blocking moisture and reducing humidity. If the vapor barrier is properly installed, it significantly reduces the chance of mold developing within the crawl space. However, mold can sometimes grow behind the encapsulation material, but it will be sealed away from the main area. Additionally, moisture can still condense inside the encapsulated space, so if you notice excess humidity, installing a dehumidifier is recommended to prevent mold and mildew growth.

To maintain an outdoor structure, perform regular inspections for damage, leaks, and weak joints. Clean the structure regularly, treat or repaint wood surfaces for weather resistance, and reinforce any weak joints to prevent deterioration and ensure its longevity.

The Markham, IL homeowners’ guide to basement waterproofing services

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