wood burning stoves

The flue is the passageway through which the by-products of combustion are put away from the fire to the outside. The chimney flue liner is the material used to form the flue or flues within a chimney. There are a number of reasons why a chimney may need lining:-

• The flue is leaking smoke and fumes into other rooms or parts of the building.

• Condensates or tar are seeping through the chimney walls causing staining, either inside or outside the building (a common problem with wood burning stoves)

• The flue is much too large for the type of fire or appliance being used.

• The flue is too cold, particularly if on an outside wall, and is not drawing properly.

• If the chimney is old, but with the chimney liner fitted the wrong way up, tar and condensate leakage may occur.

• The old flue surface is eroded and rough, causing frictional resistance to the flow of the gasses resulting in poor up draught.

What are the various methods of chimney flue liner?

Several methods are available for inserting a chimney liner into an existing flue. A brief list of these is as follows:

• Rigid sections of clay or refractory liner installed by cutting into the flue wall or by lowering down from the top of the chimney.

• Insulating concrete pumped in around an inflatable former by a specialist contractor.

• Flexible metal liner in a continuous length lowered down the chimney.

• Spray on coating by specialist contractor.

• Ceramic coating by specialist contractor.