This European Standard specifies the requirements for clay/ceramic flue blocks with solid walls or walls with
vertical perforations including bonding and non-bonding blocks and their fittings. Non-bonding flue blocks which
have insulation in the vertical perforations or attached to the outer walls are also covered by this standard. This
standard specifies the performance requirements for factory-made flue blocks.
When they are installed, they will form a part of a multi-wall chimney or a complete chimney which will serve to
convey products of combustion from fireplaces or heating appliances to the atmosphere.
This standard includes components used for domestic and industrial chimneys which are not structurally
independent (free-standing). Testing, marking and inspection requirements are covered by this standard.
NOTE 1 Flue blocks covered by this standard are manufactured in three forms :
a) single flue ;
b) multi-flue ;
c) flue/ventilation combination.
NOTE 2 Flue blocks may have flues which are either circular, square or rectangular. The joints may have a locating feature
such as a rebate.
BS EN 1806:2006 Referenced Document
EN 10088-1 Stainless steels - Part 1: List of stainless steels*, 2023-12-20 Update
EN 13384-1 Chimneys - Thermal and fluid dynamic calculation methods - Part 1: Chimneys serving one heating appliance*, 2018-10-01 Update
EN 14297:2004 Chimneys - Freeze-thaw resistance test method for chimney products