Chimserv


Flexible


Class 1 Flexible Flue Liner









Document J of the Building Regulations requires that a flexible flue liner can only be installed completely enclosed inside a masonry chimney. A non masonry enclosure such as timber or plasterboard boxing in is not acceptable.

The type of flue liner permitted depends on the type of appliance and the fuel chosen to be used.

There are two grades of multi fuel liner available:

316 grade stainless steel, which is suitable for wood burning and multi fuel use.
904 grade stainless steel, which is suitable for multi fuel and specifically coal based solid fuels.


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