Proper Shimming
Level and plumb installation for smooth operation
Toronto & GTA renovation service
Professional door and window installation with proper shimming, insulation, and weatherproofing.

Start with the scope
Send the project postal code, timing and optional photos. PReno will review the details before discussing the next estimate step.
Level and plumb installation for smooth operation
Insulation and weatherstripping for comfort and savings
Proper hardware installation and reinforcement
What to expect
Professional door and window installation services in Toronto and the GTA. Expert installation of interior doors, exterior doors, and window replacements with proper shimming, insulation, and weatherproofing. We install pre-hung doors, slab doors, French doors, sliding doors, and all window types. Our experienced installers ensure proper operation, energy efficiency, and security. From single door replacements to complete home upgrades, we deliver quality installation that enhances comfort and curb appeal. Every installation is done right the first time with attention to detail and craftsmanship.
We serve Toronto, Mississauga, Etobicoke, North York, Scarborough, Vaughan, Oakville, and Brampton. Our door and window installation services include precise measurement, careful removal of old units, expert installation with proper shimming and insulation, and complete trim work. We work with all major door and window manufacturers and can help you select the best options for your home, budget, and style. Whether you're upgrading for energy efficiency, security, or aesthetics, we deliver professional installation that performs for years to come.
Project flow
A clear sequence from the initial estimate through site preparation, installation and cleanup.
Precise measurements and door/window selection.
Careful removal of existing door or window.
Install new unit with proper shimming for level and plumb.
Spray foam insulation and weatherproofing.
Install casing, trim, and all hardware.
Helpful answers
Common questions about door & window installation in toronto & gta in Toronto and the GTA.
Pre-hung doors come with the frame, hinges, and often the hardware already attached, making installation faster and easier. Slab doors are just the door itself and require an existing frame. Pre-hung is recommended for most applications.
Yes, we install all types of exterior doors including entry doors, patio doors, French doors, and sliding doors. We ensure proper weatherproofing, insulation, and security features.
Yes, we specialize in window replacement with minimal disruption. For most applications, we can install new windows from the interior without disturbing exterior siding or brick.
A single interior door typically takes 2-3 hours. Exterior doors take 3-4 hours. Window replacements vary but most take 1-2 hours per window. We'll provide a timeline for your specific project.
Permit and approval requirements depend on the opening, product and property. The owner should confirm current requirements before work is scheduled, and any required documentation must be identified in the scope.
We install all security hardware including deadbolts, reinforced strike plates, and security hinges. For exterior doors, we recommend high-security locks and proper door reinforcement.
Service area
Contact PReno with your postal code to confirm current availability for your project.
Free estimate request
Share the location, timing and project details. Photos are optional and can help clarify the existing condition.
Other services that complement your project
Interior painters in Toronto for houses, condos and apartments. Walls, ceilings, trim, repairs and careful preparation. Request a free PReno estimate.
Plaster skimming and wall crack repairs for smooth, paint-ready walls in Toronto & GTA.
Repair, staining, and new builds for decks and fences in Toronto & GTA.