"mjb" wrote in message
oups.com...
Am installing a porcelain tiled floor - onto an existing concrete
subfloor. I have decided (after reading the thousands of messages on
the subject!) to install electric underfloor heating mats (on top of
insulation boards). I am well aware of the
economics/advantages/disadvantages particularly in comparison with
water systems. It is a playroom with central heating and the idea is
only to take the edge off the cold tiles.

Fit laminate flooring then as it costs nothing to run.