Exterior Door Replacement for Ontario Homes 2026
Replacing an exterior door improves curb appeal, energy efficiency, and security in one project. This guide covers door materials, Energy Star requirements, frame options, and GTA costs.
Door Material Comparison
| Material | Ontario Performance | Maintenance | Cost (installed) |
|---|---|---|---|
| Fiberglass | Excellent (R-5 to R-8) | Very low | $2,500-5,000 |
| Steel | Very good (R-5 to R-7) | Low | $800-2,500 |
| Wood | Fair (R-2 to R-3) | High | $2,000-6,000+ |
| Wood/fiberglass clad | Excellent | Low | $3,500-8,000+ |
Recommendation for GTA: Fiberglass is the best all-round choice — outperforms steel in thermal performance and outperforms wood in maintenance demands.
Energy Star Requirements (Climate Zone 6)
- Maximum U-factor: 1.22 W/m2K (R-4.6 effective)
- Minimum ER (Energy Rating): 20 for hinged doors
- Triple-seal weatherstripping for minimum air leakage
- Look for Energy Star Canada certification label
Frame Replacement vs. Insert Only
Insert only: Lower cost, preserves existing frame. Only suitable if frame is square, rot-free, and properly insulated.
Full frame replacement: Required when frame is rotted, out of square, or improperly insulated. Add $500-1,500 labour. Strongly recommended for doors over 20 years old in Ontario.
Security Upgrades
- Grade 1 deadbolt (ANSI/BHMA A156.30)
- 3-inch screws in strike plate (into studs, not just door jamb)
- Door reinforcement kit at lock points
- Multi-point locking system (3 or 5-point) for maximum security
Cost Guide
| Scope | Cost |
|---|---|
| Steel door (slab only) | $800-1,500 |
| Fiberglass + full frame replacement | $2,500-5,000 |
| Premium entry + sidelights + transom | $5,000-12,000+ |
| Threshold + weatherstripping only | $300-600 |
Find Ontario door installers and renovation contractors on home.renovation.reviews.
LF Builders has replaced thousands of exterior doors across the GTA since 1974. lfbuilders.ca