1. Roof Size: The larger the roof, the more materials and labor are required, which increases the overall cost.
2. Roof Complexity: Roofs with multiple slopes, valleys, dormers, or other features will cost more to replace due to the additional labor and materials.
3. Material Type: Different roofing materials come with different price points. Asphalt shingles are generally the most affordable, while metal, slate, and tile are more expensive.
4. Labor Costs: Labor costs can vary depending on the region and the contractor. Urban areas tend to have higher labor costs than rural areas.
5. Roof Pitch: Steeper roofs are more challenging to work on and may require additional safety measures, which can increase the cost.
6. Removal of Old Roof: If the old roof needs to be removed, this can add to the cost, especially if multiple layers need to be taken off.
7. Location: Prices can vary significantly across provinces. For example, roofing costs in cities like Toronto or Vancouver may be higher than in smaller towns or rural areas due to higher living costs.

Additional Considerations:

• Warranty: Some materials come with longer warranties, which might justify a higher initial cost.
• Roof Inspection: A professional inspection can reveal underlying issues like rot or water damage that might increase the total cost of replacement.
• Permits: Some areas may require permits for roof replacement, which could add to the cost.