
Some of our top rated door installers in Thornhill, Ontario
Sort by:
- Get in touch
If you are looking for the finest quality custom shower glass doors and enclosures for your shower, look no further. Shower Lagoon has been a family company for the last 20 years. We have provided our clients (residential & commercial) with loyalty, quality, and dependability. We can design and manufacture any shower glass enclosure and glass doors in our factory using only the best materials. Custom shower glass doors, glass entrances, glass railings, frameless sliding system shower glass, glass storefronts, glass partitions, and many more services. We service all of GTA: Toronto, Etobicoke, Mississauga, Woodbridge, Vaughan, and Oakville! Call us for a free quote and you will not be disappointed!
- Get in touch
7G Windows supplies and installs energy-efficient windows and doors throughout the Greater Toronto Area, Durham Region, and the Kawarthas. Our goal is to enhance your home’s or cottage’s curb appeal while significantly improving energy efficiency. The 7G Windows founders have worked as installers for over 15 years before. The prior experience has taught them to pay attention to all the smallest details when it comes to the installation process, ensuring you get the best quality installation possible.
- Get in touch
Opzionie Architectural Systems Inc. Canadian Entrance, Opening & Security Solutions Opzionie Architectural Systems Inc. is a Canadian company specializing in the design, supply, installation, maintenance, inspection, and integration of entrance, opening, security, and architectural hardware systems for commercial, institutional, industrial, and residential properties across Ontario. With more than 26 years of international industry experience, our expertise has been developed through projects involving commercial buildings, financial institutions, embassies, government facilities, healthcare, hospitality, education, and other high security environments throughout Canada and the Middle East. We provide practical, technically sound, and cost effective solutions that combine architectural hardware, physical security, accessibility, automation, modern access control technologies, finishes items like vinyl / laminate flooring amd other many more architectural finishes. Our Core Services Doors & Entrance Systems • Commercial and Residential Door Solutions • Hollow Metal and Wood Doors • Aluminum Storefront Entrances • Glass Entrance Systems • Fire Rated Door Assemblies • High Security and Specialty Doors • Vault and Security Door Consultation • Sliding, Swinging and Automatic Doors Architectural Hardware • Door Closers • Hinges and Pivots • Exit Devices • Lever Handles and Locksets • Cylinders and Master Key Systems • Door Coordinators • Thresholds and Weatherstripping • Door Accessories Locksmith & Security Services • Lock Repair and Replacement • Rekeying Services • High Security Cylinders • Smart Locks • Electronic Locking Systems • Electric Strikes • Electromagnetic Locks • Panic Hardware • Access Control Hardware Automatic Door Systems • Automatic Swing Door Operators • Automatic Sliding Doors • Low Energy Operators • Accessibility (AODA) Solutions • Preventive Maintenance • AAADM Inspections Security & Access Solutions • Access Control • Door Automation • Security Hardware • Entrance Security Assessments • Physical Security Upgrades • Safe Room and High Security Door Consultation Glass & Interior Systems • Glass Doors • Office Partitions • Shower Enclosures • Glass Hardware • Interior Architectural Systems Why Clients Choose Opzionie • Over 26 years of international industry experience • Canadian company with global project expertise • Strong background in banks, embassies, government facilities, commercial developments, and high security environments • Technical and solution based approach • Honest recommendations before any work begins • Professional site assessments • Supply, installation, inspection, maintenance, and repair • Coordination with leading manufacturers and specialty contractors when required • Fully warranted workmanship • Residential, Commercial, Institutional, Industrial, and Property Management solutions Our Commitment Every project begins with understanding the client's operational, security, accessibility, and budget requirements. We believe in providing the most practical and commercially viable solution rather than simply replacing products. Whether you require locksmith services, architectural hardware, automatic doors, access control, entrance modernization, or specialized security solutions, Opzionie delivers dependable expertise backed by decades of international experience. Our Philosophy Professional Advice. Practical Solutions. Long Term Value.
- Get in touch
MGK renovation can help you with your install or replace window frames, build or renovate basement & install or repair acoustic ceiling tiles request in Scarborough and its surrounding cities. They’re at your disposal to listen and assist you in all your projects. Get in touch with MGK renovation now to discuss your needs and arrange a quote.
- Get in touch
- Best of Newly Listed 2025
LGM Custom Glass and Mirror serve the GTA and surrounded areas with glass and mirror products that are made per order. Thanks to excellent customer service and high product quality and as a result we achieve a great reputation. We are the specialists in wide variety of customized glass. When it comes to providing glass or mirror products for your home or business, LGM Custom Glass and Mirror is your number one source. We manufacture and install custom shower doors and enclosures, storefronts, glass entrance systems, railing systems, "UV" bonding products, table tops, wall-to-wall mirrors, closet doors, and many more custom glass and mirror products. Our personnel are experts in the field of glass and mirror craftsmanship. We guarantee the quality of work you will receive! The understated beauty of glass will lend elegance to your home or commercial space, and mirrors carefully placed will open and brighten small urban enclosures. We endeavor to satisfy our clientele with our fine aesthetic sensibility and excellent craftsmanship. In fact, over 90% of our customers are referred by existing customers. Contact us today at 647-986-4005
- Get in touch
Ontera Homes Inc. is a residential renovation and construction company serving Toronto and the Greater Toronto Area. We specialize in home renovations, kitchen renovations, bathroom renovations, basement finishing, flooring, framing, drywall, trim work, decks, and general construction services. Our focus is on delivering quality workmanship, clean finishes, and reliable service from start to finish. Whether you are updating a single room, finishing a basement, or planning a larger home renovation, we work closely with homeowners to understand their vision, provide practical solutions, and complete each project with care and attention to detail. At Ontera Homes Inc., we believe every project should be built with professionalism, clear communication, and long-lasting value. Our goal is simple: to create spaces that are functional, modern, and built to be enjoyed for years to come. Quality Renovations. Professional Results.
- Get in touch
- Best of Awards 2023
Invincible Garage specializes in designing your garage to look luxurious and well organized. We design cabinetry to meet your needs, making everything easily accessible and manageable. Creating lighting that meets every family members needs, whether its the handy man at work or kids simply practicing with their band in the garage, we have what best suits you. Painting skills that will add a fresh new look to your garage and applying floor coating that gives your garage a look that makes friends and neighbours think you spent millions. By making all these upgrades to your garage, you are adding more market value to your home and creating a space that you will enjoy every time you step into your car .
- Get in touch
At Canadian Standard, we specialize in providing high-quality window and door installation services to our customers. We take pride in offering a wide range of products and services to meet your unique needs.
- Get in touch
Full-service construction company specializing in fencing, decking, framing, landscaping, and outdoor projects. High-quality work, reliable service, and results built to last.
- Get in touch
- Best of the Best 2025
- Best of Awards 2026
Your Trusted Windows & Doors Experts. We have been in this industry for many years, and we are committed to helping homeowners in Toronto and the GTA improve the look and energy efficiency of their homes with high-quality, factory-direct vinyl windows and entry doors. A LITTLE ABOUT OUR Windows and Doors Company. At ALDA Windows and Doors, our team has a combined 20 years of experience installing quality products and providing excellent windows and doors services. Our mission is to ensure that every customer we serve is satisfied with their service, and are able to enjoy their new factory-direct windows and doors for many years. When you choose ALDA Windows and Doors, you can rest assured that you will always be provided with free estimates and professional, courteous service! FACTORY DIRECT Vinyl Windows and Entry Doors Free in-Home Estimate We come to you and provide you with a free estimate! Get a Quote icon-tools Expert Installation Our trained and experienced installers will do the job right. Learn More Start Saving Today Energy-efficient windows and doors, you will save money year-round.
- Door Installer in Thornhill, OntarioGet in touch
GLOBAL WINDOWS AND DOORS is a business established in 1980. Since that time thousands of homes have received their new looks, increased its value and saved heating and conditioning expenses by purchasing new vinyl windows. Our windows are manufactured by our factory in GTA. We are Energy Star certified and all our windows received an outstanding Energy Efficiency test results PVC-U products are manufactured from impact modified PVC compound specially formulated for the exacting requirements of windows and doors. The formulation has a high degree of thermal stability and gives a silky smooth finish and an excellent resistance to impact. The extrusion process is carefully monitored to ensure that profiles are produced with minimum in-built stress. The weathering and color fastness of the product has been proven by laboratory testing and by exposure in the field throughout the world in many different climatic conditions.
- Get in touch
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.
- Get in touch
I have over 3 years of experience installing and repairing doors and windows in Canada. I work with both residential and commercial projects. I install interior doors, exterior doors, commercial doors, windows, and also do door and window replacements and adjustments. I always do clean and professional work and make sure everything fits well and works smoothly. Skills- Residential doors and windows Commercial doors and windows Interior door installation Exterior door installation Door and window replacement Door and window repair and adjustments Why hire me- Reliable and professional. I care about doing a good job and making sure the customer is happy.
- Get in touch
- Best of the Best 2024
- Best of Awards 2026
Everest Windows & Doors Your trusted full-service window and door experts. We specialize in the production, sales, and installation of premium windows and doors across a wide range of areas, including Toronto, Hamilton, Mississauga, Vaughan, Burlington, Muskoka, and more. Why Choose Everest? • “Customer for Life” Guarantee: Our motto reflects our commitment to quality. With Everest, you’ll never need to replace your windows or doors again for as long as you own your home. • Superior Performance: We design, manufacture, and deliver high-performing windows and doors tailored to your needs. • Expertise You Can Trust: Our experienced team and state-of-the-art manufacturing plant bring innovative designs and exceptional craftsmanship to every project. Service Areas: We proudly serve over 30 locations, including Richmond Hill, Newmarket, Oakville, Kitchener, Niagara Falls, Barrie, and more. Transform Your Home Today Choose Everest Windows & Doors for precision, speed, peace of mind, and an outstanding customer experience.

