"Mike Barnes" wrote in message
...
Our bathroom is soon to receive a new slate floor. SWMBO, after some bad
experiences with hotel bathroom floors, insists that it's heated.


On thing to watch is that UFH is best carried out with temperature limited
water ... 38deg C or so as a maximum.
The water you are pumping in from your rad system might be too hot and cause
hot spots on the floor.

Perhaps a mixing valve teed across your F & R might be worth considering.

If you can't bury the pipes in a good thickness of screed under the slate
due to height limits - or on underside of the floor deck - then you may be
better off going for electric.


Rick