# Ontario Exterior Door Replacement Guide: Steel vs Fibreglass vs Wood, Energy Ratings & Costs

**URL:** <https://home.renovation.reviews/t/ontario-exterior-door-replacement-guide-steel-vs-fibreglass-vs-wood-energy-ratings-costs/46881>\
**Category:** Ontario\
**Created:** [April 26, 2026, 6:44pm UTC](https://home.renovation.reviews/t/ontario-exterior-door-replacement-guide-steel-vs-fibreglass-vs-wood-energy-ratings-costs/46881 "2026-04-26T18:44:08Z")\
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**Author:** ![system](https://home.renovation.reviews/user_avatar/home.renovation.reviews/system/32/77_2.png) [@system](https://home.renovation.reviews/u/system)\
**Post date:** [April 26, 2026, 6:44pm UTC](https://home.renovation.reviews/t/ontario-exterior-door-replacement-guide-steel-vs-fibreglass-vs-wood-energy-ratings-costs/46881/1 "2026-04-26T18:44:08Z")

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Exterior door replacement improves energy efficiency, security, and curb appeal in one project. Here is a complete Ontario guide for 2026.

**Why Replace Exterior Doors**  
Drafty doors add 5-15% to heating bills. Security upgrades significantly with modern multi-point locking systems. Front door curb appeal directly affects buyer first impressions.

**Steel Doors: $800-$2,000 installed**  
Most common in Ontario. Polyurethane foam core, R-5 to R-15 insulation. Durable, low maintenance, best security rating. Widest range of styles and finishes.

**Fibreglass Doors: $1,200-$3,500 installed**  
Premium choice. Realistic wood grain without maintenance requirements. Better insulation than steel. Does not rust, dent, or expand/contract with Ontario temperature swings. Most popular premium upgrade.

**Wood Doors: $1,500-$5,000+ installed**  
Classic aesthetic. Requires painting or staining every 2-4 years in Ontario climate. Common in heritage and custom homes.

**Energy Performance**  
Look for ENERGY STAR Canada certified doors with foam-filled frames and weatherstripping rated for Ontario temperatures (-40C rated). Multi-point locking reduces air infiltration vs single-point.

**Permits**  
Replacement in same rough opening: no permit required. Enlarging the opening: structural permit required.

**Heritage**  
Heritage Conservation District properties may require Heritage Permit for door profile changes.

Discuss door replacement and find Ontario contractors at home.renovation.reviews.