Leaking WC cistern.....Not!

[plumb_boy]

I noticed a wet (soggy) patch in my nice laminate flooring in my bathroom, behind the toilet! I checked first and foremost the inlet and outlets for WC operation, as I was very careful when fitting the pot all seals including the "doughnut" between pan and cistern was fine!
Then I discover a strange "leak", water vapour is condensing on the outside of the ceramic cistern ( like a cold beer) and running down the sides and into my floor.
The cistern is a 20"X6"X12" close coupled type, bottom feed inlet with flapper type water outlet. I have reduced the water level to a bare minimum with the inlet float. Bathroom seems warm enough, maybe our mains water is too cold??
Any advice?
Cheers
Mike

 

[HandyJon]

You've got too much water vapour in the air. You need better ventilation. Either with a extractor fan, or at the very least keep the door to the bathroom open to allow the air to circulate. And don't have long hot showers!