Buyer's Guide - Windows & Doors
Make informed choices for comfort, efficiency, and curb appeal. This guide distills key decisions and points you to deeper resources for details.
Note
Verify any performance claims against current manufacturer documents and NRCan resources before making final decisions.
Define Your Goals
Comfort
Reduce drafts and condensation for a more comfortable home
Energy
Lower heat loss and manage solar heat gain
Aesthetics
Sightlines, colors, grilles, and curb appeal
Ventilation
Choose operable types vs fixed for airflow needs
Budget & Timeline
Consider lead times and project phases
Casement/Awning
Strong sealing and excellent ventilation control
Slider/Hung
Simple operation and space-saving design
Picture (Fixed)
Maximum glass area with best air-tightness
Bay/Bow/Custom
Design features for enhanced light and views
Double vs Triple Pane
Balance performance and cost based on climate needs
Low-E Coatings
Gas fills and warm-edge spacers for efficiency
Specialty Options
Tints/privacy, laminated/acoustic packages
Compare Performance Metrics
Understand the key numbers. Learn more about ENERGY STAR metrics →
U-factor (W/m²·K)
Measures heat loss - Lower is better for insulation
ER (Energy Rating)
Canadian composite metric - Higher is better overall
SHGC (Solar Heat Gain)
Solar heat admitted - Balance winter gains vs summer heat
VT (Visible Transmittance)
Daylight transmission - Higher is brighter
Doors: Pick the Right Category
Thresholds vary by category - verify label and model. See all door options →
Opaque
No glass - maximum privacy and insulation
≤50% Glass Area
Balanced light and privacy
>50% Glass Area
Maximum light transmission
Plan Installation & Timeline
Retrofit vs Full-Frame
Choose the right installation method for your situation
Scheduling & Weather
Plan for weather contingencies and optimal installation windows
Lead Times
Typical lead times vary - confirm current ranges with your advisor
Manufacturer Coverage
Frames, insulated glass, hardware, and finishes
Labour/Installation
Installation workmanship coverage
Maintenance
Keep coverage valid with proper care
Questions to Ask Your Advisor
- Are these configurations ENERGY STAR certified? Show labels.
- What are the U-factor/ER/SHGC/VT values for my selections?
- How will installation be flashed and sealed?
- What are typical lead times for my options?
- What is the labour warranty and what's excluded?
Quick Checklist
Ready to Get Started?
Use our online tools to configure your perfect windows and doors, or book a free consultation with our experts.