Commercial Door & Window Installations
New build or renovation — Nextgen's team handles the complete supply and installation of every commercial door and window system, done right the first time.
One Team for Every Door & Window
Whether you're building new, renovating an existing space, or replacing aging door and window systems, Nextgen Door Systems provides complete supply-and-install service for every commercial opening.
We work directly with property owners, contractors, facility managers, and architects across the GTA. Our team handles the entire process — from site measurement and product specification to installation, hardware commissioning, and final inspection.
With over 30 years of installation experience, Nextgen and his team have completed projects of every scale — from single door replacements to multi-building, multi-phase programs. Every installation is completed to Ontario Building Code standards, with fire-door work fully documented and certified.
What's Included in Every Installation
- New construction and retrofit installations
- Opening preparation and framing if required
- Door and frame supply (all types)
- Full hardware supply and installation
- Glass and glazing included
- Automatic operator wiring and commissioning
- Fire door labelling and compliance documentation
- ADA / AODA accessibility hardware
- Weatherstripping, seals, and thresholds
- Post-installation adjustment and warranty
Installation Services We Provide
Every door and window type, fully installed and ready to go.
Hollow Metal Door & Frame Installation
Supply and installation of hollow metal doors and frames in 14 to 20-gauge steel. Standard and custom sizes, insulated and non-insulated, for any new construction or retrofit opening.
Learn moreCommercial Glass Door Installation
Complete installation of frameless glass doors, aluminum-framed glass swing doors, and full glass storefront entrance systems with all hardware included.
Learn moreAluminum Storefront Door Installation
New installation of narrow, medium, and wide-stile aluminum doors for retail fronts, office lobbies, and commercial building entrances. Single and double swing, balanced and pivot styles.
Learn moreCommercial Window Installation
Installation of fixed and operable aluminum-framed windows for offices, schools, healthcare, and industrial buildings. Single, double, and triple glazing with matched U-values and solar performance.
Learn moreFire-Rated Door Assemblies
Supply and installation of complete fire door assemblies — door, frame, hardware, and glazing — rated from 20 minutes to 3 hours. ULC-listed and NFPA 80 compliant.
Learn moreAutomatic Door Operator Installation
Installation of low-energy and full-power automatic door operators including swing, slide, and fold systems. ADA-compliant accessible door solutions for any commercial entrance.
Learn moreOur Installation Process
A clear, professional process from first call to final sign-off.
Site Assessment & Quote
We visit your site, assess the opening, take exact measurements, and provide a clear written quote with no hidden fees. Most assessments happen within 24–48 hours.
Product Selection & Supply
We help you select the right door or window system for your application — considering traffic, security, fire rating, and aesthetics. We supply all materials directly.
Professional Installation
Our experienced installation crew completes the work efficiently and cleanly. We manage all framing, hardware, glazing, and finishing in one coordinated visit when possible.
Inspection & Sign-Off
We test every door and window for proper operation, adjust all hardware, and confirm the installation meets code before we leave. You get a clean, documented sign-off.
Code Compliant
All installations meet Ontario Building Code and fire safety standards
Supply & Install
We source and supply all materials — one point of contact for everything
30+ Years Experience
Thousands of successful installations across the GTA
We Serve the Entire
Greater Toronto Area
From downtown Toronto to Hamilton, our certified technicians are always nearby. We provide fast, same-day response across the GTA and surrounding regions.
Our Base Location
1881 Lawrence Ave E, Scarborough, ON M1R 2Y3
Areas We Cover
Don't see your area? Call us — we may still be able to help.
Ready to Start Your Installation Project?
Get a free site assessment and written quote. Nextgen's team will walk you through the best solution for your building.