Quick Answer: The 8 most common Calgary residential roof repairs are missing or damaged shingles, flashing leaks (chimney/skylight/sidewall), vent and pipe boot deterioration, valley leaks, ice dam damage at eaves, ridge cap and ridge vent failure, soffit and fascia rot, and granule loss from aging shingles. Costs range from $150 for a vent boot replacement to $3,000+ for ice dam repair with underlying ventilation fixes. Calgary's freeze-thaw climate and hail corridor make so