On Sun, 27 Nov 2016 17:38:58 -0000, mechanic wrote:

On Sun, 27 Nov 2016 16:13:52 +0000, MrCheerful wrote:

The pressure relief pipe would be the most likely, if your loss is from
the condensate pipe then the boiler heat exchanger has gone, in which
case it is probably time for a new boiler.

No drips from the condensation pipe over six hours or so, during
which the pressure dropped by about one bar. Our British Gas
'engineer' suggested this to rule out the heat exchanger (apparently
no spares of this model now available).

I'll check on the insurance cover tomorrow and explore the leak
detection company options. Drilling holes in our Amtico flooring or
ripping it up together with the plywood substrate doesn't appeal one
bit. Re-instating it would cost a small fortune.

Is there no way you can at least peer under the floor with a torch and spot water?

--
Women have large buttocks because they need airbags behind them. They're **** at reversing.