Missing mortar joints requiring chimney to be relined
Missing mortar joints & cracked flue tiles requiring chimney to be relined
Water intrusion into chimney flue, which rusted damper and lintel, requiring replacement
Animal nesting
Damaged metal chimney flues, requiring complete replacement
Chimney is not tall enough, requiring it be extended to ensure fire clearance and proper draft
Corbeled smoke chamber which inhibits draft & requiring repair