On Thu, 01 Apr 2004 22:22:19 +0100, Mike A wrote:

Hi,

Have spent some time with google groups trying to find a definitive answer
but still not sure...

I need to install a liner into an old stone chimney but have had conflicting
advice on what's required. It's for a decorative flame effect gas fire,
house is stone built around 1920. The chimney looks to be about 12-14"
diameter, when doing a smoke test smoke appeared in one of the upstairs
rooms through the open fireplace, hence my need for a flexible liner.

Some say a standard 7" liner will be fine, others indicate 6" or 7" twin
wall liner is required. Doing on the job on a tight budget, but safety is of
course important. The instructions mention a 7" flue liner should be used
but don't mention twin wall, although a diagram of a Class 1 chimney is
shown. The appliance is described as 'For decorative effect only'
manufactured to current issue of EN 509.

Can anyone offer any advise please?


A liner should be sufficient, but I'm not certain whether you must fix
the leaking chimney, it would be a good idea for sure.

With a twin wall flue and you would not have to fix the chimney, however
instalation inside the the chimney will be challenging...

AIUI the term 'For decorative effect only' means the fire is not intended
to be the main source of heating, it is simply too inefficient to be used
in that manner.

--
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at www.diyfaq.org.uk
Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html
Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html