Masonry flues

A masonry flue may be constructed individually from standard building materials or constructed from pre-cast concrete flue liners. All flues must be correctly sealed and able to withstand repeated temperature changes.

The size and diameter of the flue dictates the type of appliance that it is suitable for, although there are now kits available to convert smaller diameters flues to accept a wider range of appliances. Expert opinion should be gained before undertaking this type of conversion.