Chimney liners are made up of different materials. The type of material that is used depends on the appliance it is serving. Most commonly, aluminum and stainless steel are used and can be corrugated to be flexible, in order to go around corners or rigid, when no bends are required. The importance of having a liner installed in your chimney is firstly, to prevent the products of combustion from entering the home, through cracks in the chimney. Even the best masonry chimney is not perfect. Secondly, liners provide proper sizing of the chimney to optimize the venting process. Chimney liners that are too small will not vent the appliance completely and may cause carbon monoxide build-up. Liners that are too big will create condensation build-up, sometimes causing water to drip at the base of the chimney.
The type of liner that is used depends on the appliance it is serving. Appliances that create higher combustion temperatures, such as wood-burning stoves and oil furnaces, must use stainless steel liners to prevent the material from melting under extreme heat combined with corrosive gases. Gas appliances have a much lower vent temperature and can use lower strength aluminum at a reduced cost.
Give us a call if you have any questions about liners or fireplace dampers, or would like a quotation for an installation. We will inspect your fireplace and chimney to identify areas for improved energy efficiency.
Contact us today to book your inspection or to learn more about our repair, gas line installation and cleaning services .