"RobertL" wrote in message
...
snipped

What length of flue is in the loft? Anything where the flue is over one
metre needs to be braced (supported). How old is the system? And, is the
original installer coming back to get his wrists slapped for nearly
killing
you and your family?


There's about 2 metres of unsupported flue pipe going vertically up
through the loft and with a 1 metre dog leg. it's been like that for
10+ years apparently.

I assumed it was designed to stand alone like that!


Robert


Where the dog leg comes off, is there any support rods taking the weight at
the bends? They should be taken from close to the bends as possible, up to
the roof timber to take some of the stress off the angle connectors. Two
rods, at least, one at each end of the short dog leg section.

Will this problem happen again? Maybe in a shorter period of time because
the pipes have now been loosened off.

It's amazing how much vibration goes up the flue pipe.