Quick Answer: Calgary residential roof maintenance follows a twice-yearly cadence (spring and fall) plus event-driven checks after hail or wind. Annual costs typically run $300 to $1,500 depending on scope, with most homeowners spending $500 to $900 on routine care. The highest-leverage tasks are eavestrough cleaning, sealant touch-ups, ventilation balance, and tree clearance. Skipping maintenance often shortens a Calgary roof's life by 5 to 10 years. Most Calgary roofs are s