Chimney Flue Liners Explained - Safety and Function #53576 (License: Personal Use)

This black-and-white illustration depicts a traditional masonry chimney with two cylindrical clay flue liners installed side-by-side atop a brick structure, resting on a sloped asphalt shingle roof. The design ensures independent venting paths for multiple heating appliances-such as a furnace and fireplace-preventing cross-contamination and backdrafting. The visible mortar joints and roof flashing highlight proper construction practices critical for fire resistance and weatherproofing.

Used on HVAC, home inspection, or chimney repair websites to explain flue liner function, code compliance, or chimney anatomy; targets homeowners researching maintenance, safety upgrades, or post-purchase inspections.