How to determine if a reline with a chimney liner is needed:

• The chimney has missing or damaged flue tiles.
• The cross sectional area of the flue of a chimney venting solid fuels with no walls exposed to the outside below the roof line is more than three times the cross-sectional area of appliance flue collar.
• The cross-sectional area of the flue of a chimney venting solid fuels with one or more walls exposed to the outside below the roof line is more than two times the cross sectional area of appliance flue collar
• There are hairline cracks in the flue tiles or mortar missing between the flue tiles.
• The system has a history of repeated excessive creosote buildup.
• Deemed necessary by the appliance manufacturer.

Before making a chimney repair with a new liner read this:

Consideration should be given to determine whether the chimney is a good candidate for relining with a stainless steel system. A thorough inspection must be made of the general condition of the chimney. Loose or deteriorated mortar and cracked or missing bricks should be repaired.

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Care should be taken to locate and close any holes not being used as a thimble. The chimney should be thoroughly cleaned of tar glazed creosote, debris and other obstructions. Only one coal or wood burning appliance should be connected to a single chimney flue. Do not connect a wood burning appliance to any flue venting a gas fired appliance.

NFPA 211 requires that the chimney be at least 3 feet higher than the point where it passes through the roof and at least 2 feet higher than any part of the roof within 10 feet measured horizontally.

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