GTM Home Improvement
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GTM Home Improvement
GTM is a family owned & operated business with over 30 years experience serving the local community. The craftsmen at GTM, located in Ronkonkoma and serving all of Long Island and parts of N.Y.C., are remodeling specialists well recognized throughout the area for top-quality workmanship at reasonable rates.

No matter what type of improvements you may have in mind, these experienced contractor's will finish the work promptly and efficiently. From Room additions, new siding and interior renovations, to replacement windows and roofing, they do it all. The professional craftsmen at GTM are experts in their field, and the company is fully licensed and insured for your protection.

Every project completed by GTM has been personally supervised by the company's owner and meets or exceeds all building codes to ensure the safety of their customer's. If quality, price and a superior outcome on every job, contract GTM Home Improvement Corp. whenever you need home improvement project's done or roofing.
Services
The contractors at GTM are available for anything from building a brand new home, to general home repairs, and small projects. We are experienced in both commercial and residential construction projects. The GTM crew are fully licensed and have over 30 years experience. Each job is tackled diligently and efficiently getting the job done right and with superb quality.
Metal & Copper roofing is rapidly becoming the most popular type of roof in demand currently. Not many roofing companies are skilled in the area of sheet metal fabrication. GTM is a family owned and operated business involved in the sheet metal industry for over 50 years. Our trained sheet metal specialists are able to complete any project you request with the proper skills and utmost professionalism.
GTM's licensed and experienced Roofing Contractor's are committed to Installing your new roof to exceptional craftsmanship and quality. Ideally, we would like our Roof to last forever. Unfortunately most roof's need to be replaced or at least repaired about every ten years. In choosing the right material for your roof there are plenty of options to choose from.
GTM is who to call when it's time for a roof repair. Our experienced crew will ascertain just what the problem is and the best approach to properly repair your roof. GTM is capable of handling not only shingle roofs, but any type of metal roof as well. We handle everything from repairing a few damaged shingles, to a complete roof being torn off and replaced.
Sheet Metal Roofing is a craft not many Roofing Contractor's are able to do. This is an area GTM specializes in. Family owned and operated with 3 generations of skilled sheet metal craftsmen. GTM has over 30 years experience. We fabricate all sheet metal right on the premises in our own shop. Which means you deal with us directly from fabrication to delivery & installation.
Reviews (6)
Annemarie D'Amico Kohilas
Annemarie D'Amico Kohilas
Jul 27, 2020
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Positive: Punctuality, Quality
I’m so happy I chose this small family business, instead one of the larger ones. They did my New roof, Velux skylights, !new Anderson sliding doors and 6 Anderson windows. Beyond thrilled with quality of work and professionalism. They showed up every morning at 7 and left about 4 until the job was completed. Highly recommend!
Service: Remodelling
Jason Deluca
Jason Deluca
Jul 03, 2020
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The guys over at GTM showed up exactly when they said they’d be for the estimate. I was blown away by how knowledgeable, thorough, and the final cost. I assumed at a price that affordable, I’d be getting sub-par work. I could not have been more wrong! They showed up on time to start the job, completed it in the time frame they gave me, did top quality work, and did an excellent job with the clean up. Anyone thinking of hiring anyone else will be doing themselves a huge disservice.
Sabrina D.
Sabrina D.
Feb 06, 2018
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This company did a great job installing my new roof.. they came when they said and finished the job in the time frame they estimated. Very pleasant to deal with and wasn't trying to sell me on stuff I didn't need. I highly recommend this company.
Tj Roden
Tj Roden
Dec 03, 2016
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Great established company ....awsome work and work ethics ...smart people doing extraodainry work
Sabrina Deabreu
Sabrina Deabreu
Oct 08, 2016
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Needed a pretty big renovation project which involved Siding,roofing, new windows and doors. Greg and the guys were great and extremely knowledgeable in the field. It was the smoothest project I and my Husband have ever been through. Contract NO ONE ELSE! ONE CALL DID SOLVE IT ALL.
THANK YOU again
Gerald D.
Gerald D.
Mar 30, 2014
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This guy is a crook. He billed for work he did not do. The quality was dismal. We had to hire another contractor to finish all of the work. Don't sign anything with Greg Toomey. He is A liar and a crook.