Hello, I have gas central heating (combi boiler) and would like make use of this when I have a shower installed. However, the problem that I have is that the wall where the bath taps are (would probably run a mixer shower off of them?), curves/slopes inwards - starts sloping about half way between the top of the bath and the ceiling. Obviously, I would like to tile this first, but don't know how about going around this as regards the curve/slope on the wall. Somebody, did mention mosaic tiles once, but I really would like to use largish/rectangular ceramic tiles instead. Also, I don't really want the shower riser rail (would need one due to our heights, as there are 5 of us and the youngest child is 7) being fixed sloping (if it would work anyway like that) - any ideas please? Thank you.