When installing a flexible flue liner in an existing chimney there are a number of options available at the top of the chimney stack for securing the flexible flue liner and reducing water and bird ingress into the chimney.
The main factors that help determine the appropriate liner fixing method are:
- The chimney stack has a chimney pot
- The installer recommends removal of a chimney pot during installation
- The chimney stack does not have a chimney pot
The most common flexible flue liner installation methods to cater for both chimney and non chimney pot are shown below.
Flue liner installations with chimney pot
Pot hanging clamp and cowl
Pot is not removed
The pot hanging clamp and cowl can make installations easier and is certainly a good option when backfilling the chimney with
granular insulation.
Available for 5 and 6 inch flue liner.
Pot hanging cowl
Pot is not removed
Available in all flue liner sizes.
Top plate and clamp
Pot has to be removed
Backfilling with insulation is completed before installing the top plate and clamp.
Available in all flue liner sizes.
Flue liner installations without a chimney pot
Top plate and clamp with rain cap
Backfilling with insulation is completed before installing the top plate and clamp.
Available in all flue liner sizes.
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