Technical Booklet L Combustion Appliances and Fuel Storage Systems·Page 28·2.27
Flue pipe joint installation
Spigot and socket joints must be fitted with the socket facing upwards to contain moisture and condensates, and joints must be made gas-tight using proprietary jointing accessories or non-combustible rope or fire cement.
A flue pipe with spigot and socket joints should be fitted with the socket facing upwards to contain moisture and other condensates in the flue. Joints should be made gas-tight by the use of proprietary jointing accessories or, where appropriate, by packing joints with non-combustible rope or fire cement.
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