Window Replacement & Door Installation
Window Replacement & Door Installation by Verified Contractors
CanaCore coordinates verified contractors for window replacement, new window installation, and exterior and interior door installation — energy-efficient, weatherproofed, and field-supervised from single units to whole-home replacements.
What Is Window & Door Installation?
Professional window and door installation replaces old, drafty, or outdated units with modern, energy-efficient products. New windows can reduce heating and cooling costs by 20-40%, while new doors improve security, weather protection, and home aesthetics. Quality installation requires proper measurement, careful removal of old units, precise fitting with appropriate shimming and insulation, and expert weatherproofing. Poor installation negates even the best products—correct installation is everything.
Reduce utility costs
Window & Door Services
Complete installation for every opening in your home
Window Replacement
Energy-efficient vinyl, wood, or fiberglass windows with modern insulation technology.
Entry Door Installation
Steel, fiberglass, or wood entry doors with high-security locks and weather sealing.
Patio Door Systems
Sliding glass doors, French doors, and multi-panel patio door systems.
Interior Door Replacement
Bedroom, bathroom, and closet doors with modern hardware and finishes.
Garage Doors
Insulated sectional garage doors with automatic openers and safety features.
Bay & Bow Windows
Architectural specialty windows that add space and natural light.
Our Step-by-Step Process
From accurate measurement to final inspection
Measurement & Selection
1-2 daysPrecise measurements, energy rating review, and material/style selection.
Custom Ordering
2-4 weeksOrder custom-sized units with specified features, colors, and hardware.
Preparation
1 dayProtect interior spaces, set up work area, and remove old units carefully.
Installation
1-2 daysInstall new windows or doors with proper shimming, leveling, and fastening.
Insulation & Sealing
1 dayApply spray foam insulation, weather stripping, and exterior caulking.
Trim & Finishing
1 dayInstall interior trim, exterior casing, and perform final adjustments.
Professional Equipment & Techniques
Specialized tools for perfect installation
Precision Measuring Tools
Accurate unit sizing
Installation Shims
Perfect leveling and alignment
Spray Foam Systems
Air-tight insulation
Finishing Tools
Trim carpentry and caulking
Safety Equipment
Glass handling and lifting
Testing Instruments
Operation and seal verification
Performance & Code Compliance
Every installation meets energy and building standards
Energy Performance
- ENERGY STAR certified options
- Low-E glass coatings
- Argon or Krypton gas fills
- Insulated frames and sashes
Building Code Compliance
- Proper structural support
- Required egress sizing
- Tempered glass where required
- Weather resistance standards
Professional Quality
- Verified installers
- Manufacturer warranties honored
- Proper flashing and sealing
- CanaCore quality oversight
Related Services
Complete your project with these complementary services
“CanaCore replaced all 15 windows in our home over two days. The installers were meticulous—perfect measurements, clean cuts, and thorough insulation. Our first winter heating bill dropped by 30%. The windows look fantastic and operate smoothly. Worth every penny!”
Ready for New Windows or Doors?
Get a free in-home consultation and quote. CanaCore installers deliver energy-efficient upgrades with lifetime warranties.
Common questions
How long does it take to replace the windows in a house?
The install itself is often a day or two for a typical home, but the schedule is set by the manufacturing lead time on the units, which are built to your exact openings. Site measurement comes first so the order is right the first time.
Will replacing a window require any structural work?
Swapping a unit into the same opening usually does not, but enlarging an opening, adding a new one, or installing a larger patio door means a new header and can be structural. That case is assessed, and drawings are prepared for permit review where needed.
What causes drafts and leaks around new windows?
Almost always the installation rather than the window — the gap around the frame has to be insulated and the exterior flashed and sealed so water drains out and air stays out. The field crew is supervised on those details because that is where callbacks come from.
Read before you start
Practical guidance from the CanaCore Guide on this type of work.
- What Inspections Are Required During a Renovation?What inspections are required during an Ontario renovation? Building, framing, plumbing, HVAC, electrical rough-in, and final inspection stages explained.
- How to Prepare Your Home Before Construction StartsHow to prepare your home before construction starts—protect belongings, plan access, set site rules, utilities, and safety for Ontario renovations.
- Common Reasons Construction Projects Go Over BudgetCommon reasons renovations go over budget in Ontario—scope creep, hidden conditions, change orders, and bidding gaps—and how to stay on track.
- How Construction Permits Work in Ontario (Step-by-Step)How construction permits work in Ontario—drawings, submission, review, inspections, and occupancy. A clear step-by-step guide for homeowners.