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 wo...