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Some of our top rated window contractors in Thornhill, Ontario

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Peak Construction
Rating: 5 out of 5
Window Contractor in Thornhill, Ontario
At Peak Construction, we bring quality, reliability, and expertise to every job. Whether you're planning a residential, commercial, or industrial project, our experienced team delivers top-tier craftsmanship and timely execution. From renovations to new builds, we ensure every detail meets the highest standards. ✅ Custom Homes & Renovations ✅ Commercial & Industrial Construction ✅ Project Management & Consulting ✅ Quality Work, On-Time Delivery Trust Peak Construction to turn your vision into reality. Contact us today for a free consultation!
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Latest review:
Repair floor- 9 Aug 2025
I am very pleased with the work done by Joan, and I was impressed with his professionalism. I needed to have a new subfloor installed in my basement and laundry room as well as drywalling, all due to a basement leak. I posted the job on HomeStars, and Joan called me the same day to offer his assistance. He came to discuss the job and walked through the requirements with me. Throughout the inspection, he offered creative solutions. He gave me a quote later in that evening. His quote was fair, and I hired him. On the day of the job, he arrived on time and worked tirelessly until the job was complete. The project was completed as discussed and is of quality. I recommend Peak Construction and will use them again should the need arise.
CHB locksmith
No reviews yet
Window Contractor in Thornhill, Ontario
Professional service locksmith Residential/commercial Cars/keys
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Johnston Home Improvements
Rating: 4.5 out of 5
Window Contractor in Thornhill, Ontario
Friendly Handyman Work, Bathroom Reno's, Deck & Fence Projects , Roofing , Painting, Drywall, Flooring, Driveway Sealing , Custom tile work, Siding, Custom Closets, Stair Refinishing, and much more . At Johnston Home Improvements we can help. We're like that friendly neighbor you always wanted. We take pride in our quality work and offer a 5 year workmanship warranty. We are fully insured and WSIB compliant. Contact us today for your free estimate! 😃
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Latest review:
Caleb is a really hard working person and was flexible enough to change the initial work request of amending fence to completely replacing them. Recommend him, Thanks so much for the job done.
Green Roofing Solutions
Rating: 5 out of 5
Window Contractor in Thornhill, Ontario
Green Roofing Solutions is a reliable and professional roofing company. We offer high-quality roofing and eavestrough services at affordable prices in Toronto and the GTA. We have built our reputation on quality work and excellent customer service. At the heart of our business is commitment, experience and responsibility. Our team has over 15 years of professional experience in roofing, eavestrough, and skylight services. We have built over 1500 roofs in Toronto and the GTA. We have built roofs for hundreds of homeowners in Ontario as well as for significant commercial properties such as Canada's Wonderland, Mississauga Fire Station, and commercial centers. We value and maintain our reputation as a trustworthy roofing company. Certification and Liability. Our team holds all the necessary certifications required to work in the roofing industry, including Health and Safety Awareness Certification, Working at Heights Certification, and WHMIS Certification. Our workers are covered by WSIB. Warranty. We offer a full labor warranty on all of our work. We also guarantee that the installation will be done in compliance with all procedures and technologies prescribed by the manufacturer. Quality materials. We only work with well-known well-established brands such as BP Canada, CertainTeed, and GAF.
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Latest review:
Jorge and his team installed leaf gutters, patched up some weak spots on my roof, and replaced 2 downspouts. They were really professional to work with. Jorge come back twice to make sure things were done well, which I really appreciated. Thank you Jorge and team!
Sha-Monique Construction
Rating: 4.8 out of 5
Window Contractor in Thornhill, Ontario
Toronto based home renovations company that provides Fair friendly Solutions and Services For over 9 years, Sha-Monique Construction has been transforming the heart of your home with stunning, high-quality renovations. Our expert team specializes in modern kitchens and luxurious bathroom. Custom designs, quality materials, and flawless finishes every time.
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Latest review:
Install or replace curtain rails- 22 Feb 2025
Sheldon was amazing to work with. He took the time to ensure that he did the job right. I hired him to install ikea curtain tracks, and he even went to ikea with me to ensure that we had the correct parts. He came to do the work during the days we had major snowfalls. He is extremely reliable, detail oriented, and extremely professional. He was also very prompt in completing the work
Goldenfinger Renovation & Contracting Ltd.
Rating: 5 out of 5
Window Contractor in Thornhill, Ontario
Best of Awards 2021
This is Goldenfinger Reno & Contracting, based in Markham and active in the ENTIRE Greater Toronto Area. We are skilled in many areas of indoor home improvement, such as basement, bathroom, and kitchen renovations, to meet your various needs. We aim to provide our customers with quality work at reasonable prices. We also provide continual services and support where we will work with you to resolve any reasonable issues that arise even after the completion of the project. Improve the value, aesthetics, and utility of your place with the help from us! Call us today and we will visit you for a FREE quote. Services we provide: > Renovations of rooms, basements, bathrooms, kitchens, and staircases > Installations, replacements, and removals > Flooring > Ceiling Work > Tiling > Drywalling > Painting > Lighting
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Latest review:
Install or renovate bathroom- 17 Jun 2025
If I could rate Goldfinger higher than 5 stars I absolutely would. Wei Wei, Shirley and David are fantastic in every possible way way. Their workmanship, cleanliness and attention to detail far exceeds anything that we have ever encountered in many years of having contractors doing work in our home. We even gave them a key to our house so they could work while we were away on holiday. They are so trustworthy and honest that we felt we had made new friends. While working here we inquired about a second bathroom and they gave us some very affordable tips on how to freshen it up (master ensuite). We now have 2 absolutely beautiful bathrooms on our second floor. We couldn't be happier. This family is incredible and we very highly recommend them to anyone looking to have some work done in their home. John and Cathy
Dana Builder
No reviews yet
Window Contractor in Thornhill, Ontario
My company specializes in home renovations and we would be delighted to assist you with any upcoming projects you may have. We offer a wide range of services, from small updates to full-scale renovations. If you're considering renovating your home, please don't hesitate to reach out. We would be happy to discuss your project and provide you with a free quote
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Aarons Reno and Masonry Ltd.
New on HomeStars
Window Contractor in Thornhill, Ontario
Here at Aaron’s Reno and Masonry Ltd. , Your home is your biggest investment we focus on quality craftsmanship with local hands and lasting results we bring experience and care to make your vision a reality. We specialize in: Property management renovations/Kitchen and bathroom renovations/Masonry and hardscaping/Roofing and concrete work/Interlocking and custom decks And much more!
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Grey Diamond Construction
No reviews yet
Window Contractor in Thornhill, Ontario
Hi this is Arian I have eight years experience in carpentry and home renovation and restoration
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Gold Seal Caulking
Rating: 4.9 out of 5
Window Contractor in Thornhill, Ontario
Gold Seal Caulking is a leader in the caulking industry. Providing professional high quality work with extensive knowledge of products and correct applications for both exterior and interior. With this skill set and our 10 year warranty coverage we are able to offer our customers a lasting product for many years. If your in need of window caulking, door caulking, or any other structural caulking work for exterior or interior, Gold Seal Caulking is your answer!
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Latest review:
Install, repair or replace caulking- 7 Oct 2025
Old caulking removed. New, thick beads of caulking installed. Price was very reasonable. Highly recommend. This is my second time working with Gold Seal.
Monaco Interiors
Rating: 5 out of 5
Window Contractor in Thornhill, Ontario
Monaco Interiors works in both commercial and residential design. From complete renovations and home build, office design, and project management, and simple home decorating projects in homes, condominiums, office spaces, and hotels. Join us on Instagram at monaco_interiors or our FB Page Monaco Interiors Full-service interior design/decor company, kitchens, bathrooms, flooring, and renovations. Custom drapery, blinds, shutters. Custom furnishings, bedding, reupholstery, framing, accessorizing and pre-listing design consultation. All of our trades are WSIB compliant and have a full insurance package.
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Latest review:
We initially engaged Monaco looking for a designer for a major reno but decided to hire them for the whole job (design/architecture + construction) because Revi appeared knowledgeable, and it seemed like a good idea to hire one team to do it all. It started off well but was ultimately an incredibly frustrating experience. It has now been a year since completion, so weve had a chance to live in our new home and reflect. The construction began on schedule. Nine days after they began, demolition was completed, the support beam was in place, the new walls were framed out, the utilities were run, and all the initial permits were closed. At that point, we were very optimistic. The core construction team, led by Steven, was competent. As a result, a year later, there have been no structural issues. The problems started to mount when we got to the finishings. There were two major sources of problems mediocre sub-contractors, and Revis disinterest in our project and argue now, fix later attitude. It became clear that Revi had delegated our job to her assistant (without informing us prior to signing the contract) and did not feel a sense of ownership of our job. There were several large mistakes made throughout construction incorrect kitchen cabinetry, backsplash tiles, interior doors, hardware, mismatched stain on the stairs and landings, amongst others. While we were sold on a process that focused on quality assurance, we found ourselves doing the job for them, and the most frustrating part was that each time we found a mistake, there would always be an argument before it was fixed. The mismatched stairs incident is the best example of this. We pointed out from the day it was done that there was a problem with the colour to anyone who would listen. Instead of coming and seeing it with her own eyes, Revi argued with us for two weeks by email, citing the contract that said the stairs/landing may not be a perfect match to the flooring, questioning whom we informed (it was everyone), claiming that it couldnt be fixed Until she saw it with her own eyes and immediately recanted. So much stress could have been saved if she had just taken ownership of our job. It felt like she did not get to know us to the extent necessary to do a good job. For example, she had our house painted in a beautiful high end matte paint that looks great and wears terribly. This would have been a good choice for a larger home or one without children, but in our small and spirited house, it looks dirty and needs repainting a year later. Then there were the problems with sub-contractors. I had a month of stress because the electrician, to get out of 30 minutes of work, claimed that our ceiling fans could not be wired the way they had been safely wired for years prior, and Revi argued back and forth, telling us her contractor wouldnt do it because it could cause a fire .. until we got another licensed electrician to write a statement saying she was wrong. Similarly, before paying Revi an additional amount to have her painter fix water staining around our skylights, we paid her roofer to inspect to ensure there was no active leakage. He inspected three times during the reno (once for a separate issue) and found none of the glaring issues which caused leaking within months, damaging our newly finished ceilings. Since the construction ended last summer, we have reached out with several issues and most have been dealt with. However, we were not able to solve the problems caused by the aforementioned leaking due to repeated incompetence by their roofing contractor. In trying to get her to remedy this, she once again cited the contract without understanding the situation, and then finally offered to fix it, but in her offer included an insane ChatGPT generated agreement that sounds like a fake lawyer wrote it, that says she will fix it if we promise not to reflect upon our experience publicly. And because my silence is worth more than some ceiling repairs and paint, we are here today telling you we would not hire her again.
Norseman Construction & Development Ltd
Rating: 4.7 out of 5
Window Contractor in Thornhill, Ontario
Best of Awards 2025
Giving Back Award 2018
Based in Toronto, Norseman Construction & Development Ltd. has been a leader in residential construction and design since 2005. From concept to completion, we bring your vision to life through a comprehensive process that ensures the final result exceeds expectations. We specialize in custom homes, renovations, additions, laneway and garden suites, architecture, and interior design. Our wealth of experience, skilled expertise, and attention to detail allow us to deliver innovative solutions, competitive pricing, and the ability to meet milestones with ease. We understand how much your project means to you. That’s why we approach each one with professionalism, integrity, and adaptability, maintaining open communication with you every step of the way. Let us partner with you to create the home of your dreams.
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Latest review:
Install or renovate bathroom- 3 Sep 2025
Norseman did a fabulous job with my bathroom renovation. They were on time, within budget, well behaved, patient and understanding. Explained all the details and will to work around our schedule. Thanks to Ezad and Andrew. I'm already planning other projects with them.
Cantesian Woodworks Ltd
Rating: 5 out of 5
Window Contractor in Thornhill, Ontario
Cantesian Woodworks aims to provide quality framing services at a fair price. Our most senior Framers have almost a decade of experience in new Home Builds and Renovations. We also offer the following services; Decks, Fences, Porches, Additions, Flat Roof Framing, Temporary stair construction and Installation.
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Latest review:
The team was very efficient and tidy. Theyre very friendly and professional. They did a great job and the cost of their services is very reasonable. I would recommend them.
Sergii Burduzhan
New on HomeStars
Window Contractor in Thornhill, Ontario
ProRenovations is a professional renovation and handyman company serving Toronto and the GTA. We specialize in residential and commercial renovations, including interior painting, drywall installation and repair, flooring, tile installation, bathroom and kitchen renovations, and general property maintenance. We focus on quality workmanship, clean job sites, clear communication, and reliable scheduling. From small repairs to full renovation projects, ProRenovations delivers dependable results and long-term value for our clients.
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BDR Construction
No reviews yet
Window Contractor in Thornhill, Ontario
BDR Construction is the go to company for your renovation project from basement finishing, bathroom renovation, flooring and complete house renovations.Our mission is to create beautiful, livable spaces that meet our client's aesthetic, functional, and economic goals while respecting the environment. Get your free Quote by calling us or visit our website!
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Engineered Alarm Solutions Inc.
Rating: 5 out of 5
Window Contractor in Thornhill, Ontario
Best of the Best 2025
Best of Awards 2025
Engineered Alarm Solutions Inc. is a fully integrated security and surveillance provider committed to offering our customers the best in residential and commercial security products as well as home and office automation. We specialize in the following: Fire & Burglar Alarm Systems (a no term contract is required), 24/7 ULC Certified Monitoring, Security Cameras (IP & Analog), Access Control Systems (Card/Fob/Biometric), Intercoms, Home Automation (Lutron & Z-wave platform), Telephone Systems (VoIP PBX), Structured Cabling, and, Audio/Video Systems. We work with you to ensure that each system is custom designed to fit your unique needs. In addition, our detail-oriented technicians with decades of experience guarantee that every job gets done with the highest standards of excellence. In other words, our professionalism and our 24/7 services make Engineered Alarm Solutions Inc. an unbeatable provider for Commercial, Industrial, and Residential Security Systems in Ontario. Please call us now at 1-855-605-3888 for a free quotation. Among our services: commercial security systems commercial security cameras commercial intrusion detection systems commercial fire alarm system commercial intercom system commercial smoke detectors building automation system office access control system home security systems home security cameras home intrusion detection systems fire alarm system for home home intercom system home smoke detectors home automation system flood detection system personal emergency response system
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Latest review:
We recently had an Alarm.com capable alarm system and video doorbell installed at our residence. Gabriel was an absolute pleasure to work with, he tool the time to explain the benefits and costs of all the options multiple times. There were no surprises on pricing whatsoever, everything was clear with no adjustments during or after the installation. When it came to the installation, Gabriel's team was great. The technicians arrived on time, kept a clean working environment during the installation, answered all our questions and were super polite. We were so impressed we recommended Gabriel and EAS to our friends and neighbors. We will be looking to have security cameras installed in the New Year.