"Owain" wrote:

"Terry Pinnell" wrote
| While shaving this morning I was dismayed to find a foot size
| brownish stain on the newly-painted bathroom ceiling. My worry
| increased when I located it to a damp patch on the water tank
| 'platform' above the ceiling plasterboard, just on the edge.

I do not want to increase your worries further :-)

But I hope the tank platform is not chipboard that is now slowly dissolving,
leading to the tank being insufficiently supported.

Happily, no - rough but solid-looking soft wood.

--
Terry, West Sussex, UK