Technical Booklet L Combustion Appliances and Fuel Storage Systems·Page 63·4.23
Flue pipe components
Flue pipes must be constructed from specified materials including sheet metal pipes to BS EN 1856:2, fibre cement pipes to BS EN 1857, or other certified suitable materials.
The components for a flue pipe should be –
(a) any of the options in paragraph 2.26;
(b) a sheet metal pipe as described in BS EN 1856: 2;
(c) a fibre cement pipe as described in BS EN 1857; or
(d) any other material or component that has been certified as suitable for this purpose.
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