The construction of the chimney continues.  The terms flue and chimney are often confused.  The flue is the working section of the chimney, while the chimney is a structure built around a core of clay or concrete flue liners.

Chimneys and flues are available in variety of materials, including stainless steel, concrete, pumice and clay.  Clay and pumice chimney systems are suitable for use with wood, multi-fuel, oil and gas appliances.

For a chimney to work well, it requires a good flow of air and for the flue to maintain as high a temperature as possible.

It is essential to have a flue diameter to match the output from whichever type of fuel you have along with an adequate air supply.