I have just had a smoke test done on my victorian brick chimney and
found that smoke comes out of two chimney pots on my roof. As a result
it seems I need a new steel flue liner. I have asked for quotes for
installation and apart from the fact that the "Corgi" engineer turned
out not to be the quotes were astronomical. So, to DIY...
It seems that what I need is a 316 grade multi fuel liner, minimum
diameter is 175mm (7"). The price appears to be 21.14 per metre which
isn't too bad (especially compared to the 60 pounds a metre I was quoted
by the guy who wanted to do the installation). There are also fairly
clearish instructions at
http://www.fluesystems.com/ it seems. However,
is there anything I should know before embarking on this?
For example, what is the situation with the chimney "certificate" that
seems to be needed before you can have a gas fire attached. Clearly a
certificate written by me doesn't seem quite right

Of course all I
have currently is a fail from the chimney sweep.
Raphael