Do Thornhill, Ontario window contractors offer warranties or guarantees?

Many window installers in Thornhill, Ontario provide warranties on both materials and installation. Clarifying coverage protects you if problems arise after the project is complete.

Do Thornhill, Ontario window contractors provide custom solutions for unique window sizes or shapes?

Many window installers in Thornhill, Ontario can create or source custom windows for bay, bow, arched, or non-standard openings to ensure a proper fit and finish.

Can Thornhill, Ontario window contractors handle both residential and commercial projects?

Some window installation and replacement contractors in Thornhill, Ontario specialize in residential homes, while others also work on commercial buildings. Make sure your preferred Thornhill, Ontario window contractor has experience with the type of property you need serviced.

Can window contractors in Thornhill, Ontario replace or upgrade windows while I’m living in the home?

Some window contractors in Thornhill, Ontario can work efficiently without major disruption, while others may require rooms to be cleared or temporarily vacated. Clarify this before hiring.

Find window contractors in Thornhill, Ontario

Some of our top rated window contractors in Thornhill, Ontario

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LV Tile Renovation
Rating: 5 out of 5
Window Contractor in Thornhill, Ontario
All residential and commercial tiling and renovation services in the GTA!
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Latest review:
the best service, fast, professional and excellent quality, I recommend it 100 percent, we can also say that they had great efficiency and kindness, with an unequaled respect for work that everyone in the family was very pleased with, quality and price , speak for themselves,
The Roof Whisperer
Rating: 4.9 out of 5
Window Contractor in Thornhill, Ontario
As a professional Toronto Roofing Contractor we offer our customers our dedication and experience in this competitive field.At The Roof Whisperer we are constantly keeping up with the newest and up to date technological advancements within ever changing construction industry, which allows us to offer our customers a wide variety of services to solve their problems and fit their budget. Our experts are fully trained not only in roofing methods and materials but also in the actual Occupational Health and Safety Standards, with many years of hands on experience and training making us one of the leading Roofing Companies in the GTA. Our company service includes inspection and assessment, consultation and recommendation of best options, materials and estimates that are tailored to the customers individual needs. We can be at your home within 24 hours to assess your roof problem. So if the words Honest,Fair,Quality and Dedication mean anything to You, then The Roof Whisperer is for You! BECAUSE WE ARE NOT INTERESTED IN JUST FIXING YOUR HOUSE, WE WANT TO HELP YOU IMPROVE YOUR HOME. Check our website www.theroofwhisperer.ca or give us a call to book a roof assessment 647-979-5652 Our Services Include: *Repair/Replacement for Flat Roofs, Shingle Roofs, Cedar Roofs, Slate Roofs *Gutters & Eavestroughs *Siding *Roof Snow Removal *Chimney Repair (Capping) *Skylight Repair/Replacement *Vent Repairs and Installation *Roof Maintenance *Inspection, Tune Up
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Latest review:
Arthur was a pro from the beginning. On time for the estimate, clear explanation of what needed to be done, why, and cost. The job was done on time no extra costs, It was an excellent job, and the job site was left completely clean with a magnetic sweep so there were no nails left to puncture a tire. Arthur took me up to the roof to show me what had been done and that everything we discussed was completed. Overall highly recommended
Allick welcome
Rating: 5 out of 5
Window Contractor in Thornhill, Ontario
Hello to all. I consider my self to be A professional at what I do. I work at A pace that gets the job done up on the agreed time, and I do not over charge. I am reliable and treat every job as if it's my own home am working on. Demo and complete renovation is what I love doing, so I do my job with love, care and the utmost respect to the job and my customers.
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Latest review:
Carpentry framing- 26 May 2025
Allick built a tunnel for my cats to move from a window cat door to their catio on the patio. He used materials I had on hand and improved on my original idea to make the setup safer for both me and my cats. He was prompt and finished the job on time and on budget. There were no hidden costs or surprises, and he cleaned up the area before leaving. I would hire Al again.
Work Done Pro
Rating: 5 out of 5
Window Contractor in Thornhill, Ontario
OUR OVER 15 YEARS EXPERIENCE IN AUTOMATION MAKE A RIGHT PLACE FOR YOU TO START YOUR JOURNEY TO SMART HOME. Make your home smart, and life simple Expert in design, install, setup and troubleshooting for: Security cameras Smart displays & Speakers Smart doorbells & Locks Smart lights, Switches & Plugs Smart thermostats Smart Garage Voice control Wi-Fi & Networking TV's & home theatres Central & Robot vacuums Smart curtains & blinds
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Latest review:
Saeid and his team were excellent to work with for various projects around our office. The work was done quickly and professionally. Communication was also excellent throughout. Thank you!
Shane's Quality Painting
Rating: 5 out of 5
Window Contractor in Thornhill, Ontario
Shane's Quality Painting can help you with your interior/exterior painting and decorating. Staining, plastering, wallpaper hanging, or removing old wallpaper. as well as other handyman tasks you have around the house. Get in touch with Shane's Quality Painting now to discuss your needs and arrange a quote.
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Latest review:
Exterior painting- 5 Jul 2025
Shane was prompt with his service. Very friendly, but most importantly got the job done. We couldn't be more satisfied.
BNS Roofing Ltd
Rating: 5 out of 5
Window Contractor in Thornhill, Ontario
Family owned and operated business with 15+ years of experience We take pride in delivering top-tier solutions with a hands-on approach. Unlike many competitors, we never outsource or rely on subcontractors, every project is handled directly by us and our skilled team, ensuring unmatched quality, attention to detail, and accountability from start to finish. When you choose us, you’re choosing expertise, reliability, and a commitment to excellence that passes only through our hands. “Your roof is our Proof”
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Latest review:
Silvi Thank you and your crew with the excellent job on our roof of a 100 year old house. The roof looks great and we are very pleased with it. You and your fellow workers created very little noise and kept us informed throughout the process of what you were doing. This was very much appreciated. Keep up the good work. It was a pleasure meeting you. Best Regards Joe and Karen
D&D Reno Canada Inc.
Rating: 5 out of 5
Window Contractor in Thornhill, Ontario
We are a family business, our main objective is the complete satisfaction of all our valued customers. We specialize in interior renovation, such as: Renovation of basements, apartments, kitchens, bathrooms, etc. We also install and repair decks and wooden fences.
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Latest review:
Repair plaster- 24 Mar 2024
Efficient. High quality work done at a fair price. I was so impressed I'm having D&D Reno do more work for me.
Rolana Caulking
Rating: 5 out of 5
Window Contractor in Thornhill, Ontario
Rolana Caulking provides the best Window and Door exterior and interior caulking services. We use the best materials and have the best workmanship to do a professional, clean, and efficient job to ensure your home is completely sealed.
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Latest review:
Sealing / caulking- 15 Feb 2026
He did an excellent job caulking around the entire tub. I also asked him to caulk the sink, and he gladly took care of that as well. Overall, he worked quickly, did a great job, and was very pleasant throughout the process.
Markham Garage Doors Ltd.
Rating: 5 out of 5
Window Contractor in Thornhill, Ontario
Best of the Best 2024
Best of Awards 2024
Our team provides fast affordable service as well as new garage doors and openers. Our showroom allows customers to visualize, touch and learn about every garage product available! At Markham Garage Doors Ltd., we offer free in home quotations and accurate quotes over the phone for all types of new products and services for your existing project. Please give us a call and experience what its like to deal with an honest and friendly local company. Thanks for supporting Markham Garage Doors. 905-472-9178 Products: Garage Doors, Garage Door Openers,Garage door and opener service, Custom Carriage House Garage Doors, Aluminum Capping of Door Frames, Commercial Overhead Doors, Parts available for all makes and models.
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Latest review:
The men were personable, professional and efficient in every way. They explained the procedures in layman's terms. They knew exactly what was wrong and repaired the door with confidence. Highly Recommended!!!!!!
Caliber Railings
Rating: 5 out of 5
Window Contractor in Thornhill, Ontario
Best of Awards 2020
Cailber Railings We provide high quality exterior railings and columns in maintenance free materials such as aluminum, Vinyl & Glass NO RUST NO ROTTING VIRTUALLY MAINTENANCE FREE Front Porchs Deck Railings Balconies Renovations New Builds Walk Out Basements Pools Cottages More Quotes can be given over phone or meetings can be scheduled same day or week. All products meet the Ontario Building Code We offer our services in All GTA areas Competitive prices and professional installation with the best customer service to match. Call, Text or Email : 6475242290 caliberrailings@gmail.com
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Latest review:
Communication was easy and clear, we had a tight timeline and they were able to do the work within it (actually expanded scope to include front of house as well and they were still able to get it done with a quick turnaround.) I picked budget options all around but end product looks stellar. Very happy with the service and result, will definitely use them again. Thank you Lake!
Net Cost Windows & Doors
Rating: 5 out of 5
Window Contractor in Thornhill, Ontario
We are dedicated to provide an exceptional and attentive customer service.• Our vision is to excel as the leading company and serve the public with the best windows and doors products along with the installation services.• Our mission is to offer the diverse range of windows and doors to the many homeowners living in Ontario.• Our values are respect, integrity, and quality to support a healthy community capacity here at Net Cost Windows and Doors and to provide the best customer satisfaction rating.We have served a vast range and diversity of homes for over than 10 years. Our commitment to our customers has shown positive results and an enjoyable process from choosing your windows and doors and until the completion of these products’ installation.We are proud to present to you our collections and the added features that enhance each component in order to create your dream home. For personal assistance please contact and request a free-of-charge customized estimate.
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Latest review:
I purchased a new front door from Sam an the team at Net cost Windows and Doors and it is perfect. They were by far the best price and quality of the three quotes I got for replacing my front door. The door was exactly what I wanted. It was also ready earlier than quoted so I had it installed a week sooner than expected! yay! the installers were on time and left the work area perfectly clean. I highly recommend this company and Sam who really knows his stuff.
GOLDALE HOME SERVICES INC.
Rating: 5 out of 5
Window Contractor in Thornhill, Ontario
Established in 2012. Roofing, Landscaping, Stone, Interlock, Bathroom, Kitchen, Basement, Heating and Cooling, Garage Door,
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Latest review:
Repair or maintain roof or gutter- 1 Jun 2025
The tradesman was on time, very pleasant, explained what was needed and did the job quickly.
Green Home Toronto Design and Build
Rating: 5 out of 5
Window Contractor in Thornhill, Ontario
Best of Newly Listed 2025
At Green Home Toronto (GHTO) Design & Build, we address all home renovation needs with a distinctive approach to the client design and build experience. From the initial concept to project completion, our team supports you every step of the way. What sets us apart further is our unwavering commitment to environmental sustainability. As a Net Zero builder, we meticulously measure the carbon footprint of your renovation project and work diligently to reduce it to zero upon completion. Our ultimate goal is to provide appealing and desirable home experiences while contributing to a greener future for our planet. Our Services: Home & Condo Renovations Kitchen & Bathroom Renovations Basement Renovations Home Additions / Extensions Custom Home Builds Want to learn more about our cause, check us out here: www.greenhometoronto.ca. @ghto.designbuild (IG) Email info@greenhometoronto.ca to Get Your Free Quote or visit our website.
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Latest review:
Julian responded quickly with a preliminary estimate and I was able to compare to other estimates. We Choose GHT Design and Build because they were a fair price and had great reviews. Julian quickly responded with a final quote once we worked through the details of our project. The GHT team were all great to work with from demolition to finished product. Including tiling, electrical, foam insulation, and wood flooring. The finished result is exactly as we had hoped for. Project was done efficiently and on budget. No surprises along the way. Julian was flexible with some add-ons we wanted with very reasonable costs for those services (i.e. doing spray form insulation in the basement while the truck was here). We received great service at a reasonable cost and with an exceptional end product. We highly recommend GHT and will definitely use them for our next project! Michael and Daniela
Vista One Retractable Screens
Rating: 5 out of 5
Window Contractor in Thornhill, Ontario
Best of Awards 2021
Vista One Retractable Screens supplies and installs the most innovative retractable screens for doors and windows. We have several models to choose from, those that Rollaway, and others that Foldaway. They all retract into a compact cassette when not in use. Our screens provide the best protection against flying insects while providing ventilation to your home. Traditional fixed screens have limitations: they are unattractive, obstruct the view within and without; prone to damage; difficult to maneuver; hard to clean. A retractable screen from Vista One is durable, safe and easy to operate. With our extensive line of screens to choose from we have a screen to compliment any home design. Our custom screens provide a seamless transition between indoor and outdoor living spaces, blending the best of both worlds!
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Latest review:
Doug the technician was really nice and helpful. The installation was smooth and timely. Screen looked very nice after installation.
Luma Doors + Windows Inc
Rating: 5 out of 5
Window Contractor in Thornhill, Ontario
Best of the Best 2024
Best of Awards 2024
Luma Doors and Windows provides customers across the GTA with factory-direct products at incredible rates. Our front entry doors, patio doors, vinyl windows, and garage doors are all locally manufactured to make sure that our customers can get the best products quickly. No matter if you need a steel or fiberglass door, you can find the perfect product at Luma. We also offer custom options to match your specific home style. We also provide modern vinyl windows for all your needs in a variety of styles.
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Latest review:
Amazing service from the quoto the the intallation. Mike came to my house was very informative & friendly. The time frame was as quoted & the install was seamless. They arrived on time & didn't miss a beat. Smooth install with no hiccups. I would highly recommend Luma Doors.
Valentyn Svetlenko
Rating: 5 out of 5
Window Contractor in Thornhill, Ontario
I can handle any kind of work around your home or apartment – from repairs to installations and renovations. You’ll be happy with the results!
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Latest review:
Mount artwork, TVs or furniture- 12 Sep 2025
Valentyn was excellent! He responded quickly, came the same day, and hung both my mirror and shelf with great care. He was efficient, made sure everything was level and exactly where I wanted it, and even cleaned up afterward. As a single woman living alone, I also really appreciated how safe and comfortable I felt having him in my home. Highly recommend!