Gmart, Inc.

4.84 | 17 Verified Ratings
Write a Review


1367 Court P
Hanover Park, IL 60133
Your use of our services is governed by our Terms & Conditions

Gmart, Inc.

Gmart Inc

Gmart, Inc. is owned and operated by home improvement contractor Grzegorz Martyniak. Grzegorz and his team specialize in both residential and light commercial replacement and new siding, windows, doors and gutters. We only use quality made products that are suited for your needs. We believe that we employ a professional team of quality craftsman who have the knowledge and experience with the most advanced technology. We not only deliver a high quality finished product, we complete each job on time and on budget. With over 13 years of industry experience, the professional team at Gmart, Inc. is known for our responsive, reliable and efficient services. Our services are guaranteed to exceed client expectations and are tailored to each clients specific needs. We look forward to transforming your property into a more functional and aesthetically pleasing environment.


Learn how HomeAdvisor screens and approves their pros.

Service Area

  • Arlington Heights
  • Des Plaines
  • Palatine
  • Schaumburg
  • Hoffman Estates
  • Bloomingdale
  • Woodridge
  • Batavia
  • Bolingbrook
  • Chicago
  • Mundelein
  • Lake in the Hills
  • Deerfield
  • Saint Charles
  • Island Lake
  • Buffalo Grove
  • Highland Park
  • Northbrook
  • Bartlett
  • Glenview
  • West Chicago
  • Lincolnshire
  • Aurora
  • Vernon Hills
  • Downers Grove
  • Lincolnwood
  • Barrington
  • Wheeling
  • See All >

Services Offered

  • PVC Gutter Install
  • PVC Gutter Repair
  • Vinyl Siding Install
  • Vinyl Siding Repair
  • Exterior Trim Install
  • Exterior Trim Repair


Areas of Expertise

  • Doors
  • Gutters
  • Certified Siding Expert

Quick Facts

Business Hours
(Please call to confirm)
  • Warranty Offered
  • Free Estimates
  • Materials
  • Warranty Description: 5 Year


In Business Since: 2006
HomeAdvisor Screened. View Details

HomeAdvisor allows Service Professionals to post information about themselves and their business on their profile. HomeAdvisor does not review or verify the information or representations set forth in those profiles, as they are self-reported by the Service Professional.

HomeAdvisor verifies state-level licensing where applicable - note: some states require local or county level licensing and you should verify whether or not your pro is properly licensed.

To find more licensing information for your state, visit our Licensing Requirements page.
HomeAdvisor: The nation's largest network of screened and rated pros.

Ratings & Reviews
Gmart, Inc.

Real feedback from real homeowners.
Learn more about this pro by reading the ratings and reviews below.
Write a Review
Showing 1-10 of 17
  Page 1 of 2
Sort by newest   Date ▼   Rating  
4.5   |  
am very pleased with Greg .Chris was an amazing worker very polite and friendly would hire them again if needed
Was this review helpful?  
5.0   |  
Review by in Naperville, IL
Project: New Windows
Greg and his team were incredible. The windows were installed in less than one day and the entire team was extremely polite and courteous. We also had Greg install new siding and gutters installed and we are extremely happy with the end result! We would hire them again in a heartbeat.
Was this review helpful?  
5.0   |  
Did a thorough job, quick and cleaned up after themselves. Greg even repaired a few places of siding on the front of the house at no extra charge. The siding looks great. I would easily hire them again. Nice work! Great Job!
Was this review helpful?  
5.0   |  
Review by in Streamwood, IL
Project: Install or Completely Replace Vinyl Siding
5 star experience. I'd rate Gmart higher if I could! I don't write reviews, but this experience was as good as it gets. Our house is 40 years old and the exterior started to show signs of wear. Greg and his crew did a great job replacing our siding, fascia, soffit, window trim, gutters, downspouts, and gutter guards. We were lucky enough for our insurance to foot most of the bill due to hail damage, and Greg was wonderful at assisting us through this process, even helping us push our insurance company to approve more than their original estimate. We took this opportunity to not only replace what we had, but make upgrades (cedar porch ceiling, new front and back doors, and upgraded light fixtures) and transform the look and feel of our home. We interviewed 5 exterior companies for the job: 2 were focused on simply replacing what we had and I could tell they were not used to making upgrades, 2 were focused on making upgrades to exteriors (which was nice) but their quotes reflected this, but Greg at Gmart offered a great combination of getting the replacement job done right while offering design ideas/opinions to make our house look great, help us get the best bang for our buck, and avoid poor choices.......all at a great price. While working on the exterior, Greg and his crew pointed out ALL areas where our exterior wood was rotten, needed to be fixed (we had a 5 foot hole in the side of our house where mice were getting in, we had 2 areas of fascia that rotted which caused our gutters to sag, we needed insulation added to a section of our back wall, etc.). Getting those areas fixed offers me a piece of mind I did not expect to get out of this project - bonus! Greg's 2-3 man crew got the work done on time, and even accommodated a few changes (some for free, others for a cost we agreed to before-hand). They arrived in the morning and often were working until 6 - 6:30 at night, cleaning up each night. The crew worked on my house as if it was their own. They were respectful to us, our kids, and our home, and were great to work with. Greg visited the site daily, and talked us through the work performed that day, and the work to be done in the next few days (making sure we were able to give feedback when a decision needed to be made). At the end of the day, we're pinching ourselves. We love how our house turned out, not only because it looks great, but we know the house is set to last another 40 years, and it was all done at a reasonable price. Thanks Greg.
Was this review helpful?  
5.0   |  
I highly recommend Gmart to anyone looking for high quality siding, window or gutter work. Greg is very knowledgeable and runs his company well. Staff is 5 star and always perform quality work.
Was this review helpful?  
5.0   |  
Review by in Lisle, IL
G-Mart was impressive to say the least. Let’s start with the estimate which was one my favorite parts of the whole process. I contacted about six different companies for an estimate which only four responded to. G-Mart owner Greg Martyniak came by and met with me to provide an estimate. I had three other estimates; two of which required that my wife be present for the estimate (which was a sneaky sales tactic to get us to buy on the spot). The other three estimates were all gimmicky and sales oriented. With the other estimates I felt like I was being fed a sales pitch that was long and dragged out. Greg’s estimate was right to the point and efficient. His estimate took less than 30 minutes while all the other estimates each took over an hour. He walked around the house with me and explained all the things that they would do and problems that he noticed that would be fixed by his team. And this was not some drawn out sales pitch, it was efficient and right to the point which I really enjoyed. Greg didn’t use gimmicky sales tactics to push his services on me; he just presented what his team would do, he answered my questions, and then we both went on with our days and he sent an estimate over via email the next day. The price was also very competitive. He was not the cheapest but he was way cheaper than the most expensive estimate I got. One of the things that really caught my eye initially too was not the positive reviews but the lack of negative reviews which was really impressive in my opinion. In reference to the work performed. The crews were very polite and were always working very hard. You could tell they had a great deal of experience in their field. They were very neat and thorough and did everything that they said they were going to do. They found some rotted wood behind the old siding so they showed me the problem and replaced it without charging me extra. I will definitely be recommending this company in the future; our home looks amazing, thank you Greg.
Was this review helpful?  
5.0   |  
Review by in Wheeling, IL
Prompt courteous and came in to evaluate the work. Repaired right away, good job! I will give them all my business now and will highly recommend their services to friends and family
Was this review helpful?  
5.0   |  
Review by in Hoffman Estates, IL
Replied quickly, good communication, quality work, good price. Would hire again!
Was this review helpful?  
5.0   |  
Review by in Round Lake, IL
Gmart repaired the vinyl siding on my home in less than 24 hours following my request. I plan to use this contractor for future home repairs. His level of professionalism was superb!
Was this review helpful?  
5.0   |  
Review by in Gurnee, IL
Greg was very knowledgeable and assessed what was needed for our siding repairs - several pieces of Alcon vinyl siding had warped/deformed. He took the time to re-use pieces of original unaffected siding to minimize color/shade differences with the new pieces. Greg was very polite and efficient - I would definatley use him again, without hesitation, for any future siding repairs.
Was this review helpful?  
Showing 1-10 of 17
  Page 1 of 2

Seal of Approval

What is the screening process that Service Professionals go through in order to become members of the HomeAdvisor network?

  1. Verify Trade License
    HomeAdvisor checks to see if the business carries the appropriate state-level license.
  2. Verify Insurance
    As a part of our screening process, we encourage professionals to carry general liability insurance. We require coverage for hundreds of services.
  3. Verification of State Business Filings
    For business types that require a Secretary of State filing, we confirm that the business is in good standing in the state in which it is located.
  4. Criminal Records Search
    HomeAdvisor uses 3rd party data sources to conduct a criminal search for any relevant criminal activity associated with the owner/principal of the business.
  5. Sex Offender Search
    We confirm that the owner/principal is not listed on the official state Sex Offender web site in the state in which the owner/principal of the company is located.
  6. Bankruptcy Search
    We use 3rd party data sources to check the history of the principal/owner of the business for bankruptcy filings by or against them.
  7. Legal Search for Civil Judgments
    We use 3rd party data sources to check the principal/owner of the business for state level civil legal judgments entered against them.
  8. Liens Search
    We use 3rd party data sources to check the principal/owner of the business for liens placed against them.
  9. Identity Verification (SSN)
    HomeAdvisor verifies the social security number(s) of the owner/principal for identity check purposes. This check applies primarily to smaller business entities.
  10. Identity Verification (Reverse Phone Lookup)
    We conduct a reverse business phone lookup to identify records matching the phone number information provided by the business.

NOTE: Member service professional information confirmed as described above may change or expire over time; while HomeAdvisor attempts to maintain accurate and up-to-date information, and confirms changes when notified, we cannot guarantee that profile and screening information is accurate. Therefore, we recommend that before working with a service professional you verify that information presented is still current and/or acceptable to you.
Please see HomeAdvisor's Terms and Conditions for a full description of how we screen Service Professionals

**Only for U.S. service professionals

Final Step - Confirm Your Appointment:

Confirm your appointment with on , - Change


By clicking Confirm Appointment, you affirm you have read and agree to the HomeAdvisor Terms & Conditions, and you agree and authorize HomeAdvisor and its affiliates, and their networks of Service Professionals, to deliver marketing calls or texts using automated technology to the number you provided above regarding your project and other home services offers. Consent is not a condition of purchase.