In message , Tim S
writes
Hi

At some point I'll need to take a concentric room sealed boiler flue (and
maybe a soil stack vent) out through a flat lead roof.


Would one of these:

http://www.transtools.co.uk/store/pr.../gas-torches/r
othenberger-micro-fire-lead-gas-torch-set.html

I would have thought not - you need to get a lot of heat in very quickly

I've prolly got one that will do what you need

I have a friend who is a lead roofer who will be able to tell us exactly



--
geoff