A.Lee wrote:
Phil L wrote:

A.Lee wrote:
I had to visit a house today, as they had a water leak. Or rather,
their downstairs toilet keeps getting wet.

Where can the water be condensing from for it to be condensation? -
the ceiling fungus alone is an obvious sign of water
penetration....if the bog isn't very big, it may be easier and
cheaper to pull down the cieling in there and replace that rather
than mangle a good floor upstairs.


Well, yes, I was going to pull down the ceiling to have a look, but I
need the owners go-ahead before I can do that.
I was pretty sure it was a leak, but had no way of finding out, as any
leak would be in the floor/ceiling void.

Just tell them that you think there is a leak there as all signs point
towards that, and in any case, the fungus ceiling needs replacing anyway.
It obviously cannot stay as it is and something needs to be done, I assume
they've tried various heat / ventilation methods?