Windows & Doors
Properly installed windows and doors cut heating costs, eliminate drafts, and transform curb appeal. Grand Contracting supplies and installs new windows, exterior doors, interior doors, and patio doors with the precise framing adjustments, insulation, sealing, and trim finishing that Northern Ontario winters demand.
What This Service Includes
- Window replacement and new window installation
- Exterior, interior, and patio door installation
- Framing adjustments for new or oversized units
- Insulation, air sealing, and vapour barriers
- Interior and exterior trim finishing
- Disposal of old units and site cleanup
Who This Is For
Homeowners dealing with drafts, condensation, sticking doors, or rising energy bills — and anyone upgrading the look and security of their home.
Key Benefits
- Lower heating costs through harsh Thunder Bay winters
- A quieter, more comfortable home
- Improved security and curb appeal
- Proper installation that protects manufacturer warranties
The Typical Project Process
Clear steps, transparent pricing, and professional execution.
Step 1
Measurement and product consultation
Step 2
Written estimate with product options
Step 3
Careful removal and precision installation
Step 4
Sealing, trim, and final operation check
Windows & Doors FAQs
Common questions about our windows & doors services in Thunder Bay and surrounding areas.
Why Choose Grand Contracting?
A premium window installed poorly still leaks. Our crews install to spec, insulate every gap, and finish every opening cleanly — inside and out.