Why Choose Fiberglass Windows?
Fiberglass windows represent the pinnacle of window technology. Made from the same material as the glass itself, fiberglass frames expand and contract at the same rate as the glass—eliminating the stress that causes seal failure in other materials.
Benefits of Fiberglass Windows
- Superior strength: 8x stronger than vinyl, won't warp, bow, or sag
- Thermal stability: Expands/contracts with glass, protecting seals
- Fully paintable: Change colour anytime with standard exterior paint
- Slimmer profiles: More glass, less frame than vinyl
- Excellent insulation: Among the best R-values available
- Won't rot or corrode: Impervious to moisture
- Longest lifespan: 40-50+ years with proper care
- Low maintenance: Just clean—no painting required (unless desired)
Fiberglass vs. Vinyl: The Key Differences
| Feature | Fiberglass | Vinyl |
|---|---|---|
| Strength | 8x stronger | Good |
| Thermal expansion | Matches glass | Higher expansion rate |
| Paintable | Yes—any colour | No |
| Frame profiles | Slimmer | Wider |
| Lifespan | 40-50+ years | 20-40 years |
| Price | Premium (20-30% more) | More affordable |
| Best for | Long-term value, custom colours | Budget-conscious buyers |
Perfect for Ottawa's Climate
Fiberglass excels in extreme temperature swings:
- -40°C to +40°C: Fiberglass maintains dimensional stability
- No seal stress: Same expansion rate as glass protects IGU seals
- Won't become brittle: Maintains strength even in extreme cold
- Superior air tightness: Frames don't warp, maintaining weather seals
Colour Flexibility
Unlike vinyl, fiberglass windows can be painted:
- Choose from factory standard colours
- Order custom factory colours (powder coat or paint)
- Paint yourself anytime with quality exterior paint
- Update colour when you repaint your home
- Different interior/exterior colours available
Is Fiberglass Right for You?
Choose fiberglass if you want:
- The longest-lasting windows available
- Custom colour flexibility
- Maximum thermal performance
- Slimmer frames with more glass
- Premium quality for a forever home
Consider vinyl if:
- Budget is the primary concern
- Standard white or limited colours are acceptable
- You don't plan to stay long-term