On Mar 21, 8:21 am, harry wrote:
On Mar 20, 8:42 pm, Tim Watts wrote:



The Natural Philosopher wrote:
Tim Watts wrote:
The Natural Philosopher wrote:

Flexi liners are designed mainly as after market bodges for central
heating boilers and gas fires. NOT solid fuel fires.

An are illegal unless the property is older than IIRC 1973.

No:

http://www.flueandchimney.co.uk/flue...ubCats.asp?Cat...

#

No, its still not allowed for newer properties, even the double walled
stuff IIRC.

Hang on - are we talking about installation as part of the building works or
lining an existing chimney?

Because if your chimney has issues (no matter how old) - what else do you
do?

--
Tim Watts

There are other systems.
There is one where they insert a long flexible balloon into the
chimney and inflate it. Refractory concrete is poured down the chimney
round the balloon. When it sets, the balloon is deflated and removed.

Problems occur when the flue bends and the inflatable "sausage"
touches the old masonry on the inside of the bend, so that when the
concrete lining is poured in it odesn't line the inside of the bend.
Doing the job "correctly" involves surveying the flue and opening up
through chimney breasts etc where the bends are and spacing the
"sausage" away from the inside of the bends - a dirty messy job which
is umpopular with home owners so often skipped by unscrupulous
installers....

Is it time for a Wiki on this?

Jim K