If our chimney professionals determine repairs are needed to your clay flue liners, our sweep will let you know if you will either need a full liner replacement or if your flue is a good candidate for our special Fireguard process for flue liner resurfacing and mortar joint repair.
More than 90% of clay flues are eligible for the Fireguard process. In the event your flue is not eligible for the Fireguard process, we would most likely recommend the traditional flue liner replacement. This process is more labor intensive, time-consuming and thus is usually more expensive to perform.
A full liner replacement involves removing the chimney’s cement crown to gain access to the liners. Once the crown is removed, the damaged clay liners are also removed and replaced with new appropriate sized clay liners. New non-combustible reinforcements are constructed, at the top of the chimney, to support a new cement crown. The new cement crown is “poured”, smoothed and chimney cap installed to finish.