Originally Posted by xr-Stu
apparently it works, ive fitted some but never felt it while on
thing is, its never going to be that good because ceramics are very good insulators of heat.
dnt bother putting self leveller on either, just lay the tiles ontop of the, aslong as the floors primed with pva or similar, then the matting is layed, and another layer of primer ontop of the matting, itll be fine. the leveller will just insulate it even more.
i'd disagree with most of that.....
ceramics are very good 'electrical insulators' but do conduct heat quite well and do hold their heat when the heat souce is switched off,,
if you have not encapsulated the heater mat in either tile adhesive or self leveling etc, you are introducing air gaps (which ARE very good insulators) betweent the heat mat and the tile so reducing the effectiveness of the heating mat. as all the heat rises - even though some of it will be heating your floor under the tiles, it will always try to come back into the room. by tiles stay warm for about a good hour after the heating has gone off,
mine is controlled by the digital stat with a 7 day timeclock with comfort and standby settings so that it will keep it aired rather than going off and then having to come on for longer to warm it back up when you ned it.