I hope I have not bitten off more than I can chew!! I now have a bare room 3550mm x 3470mm and have 3 brick walls and one internal wall. I have put battens on the brick walls and am about to put up 'V' groove pannelling with a dado rail on top and then tiles above that. I have so much going on on my walls- plumbing toilet entry ect. Do I just measure everything from each edge then drill holes for the taps and when do I get the electrician in...now before the pannelling goes up or after I have put it up? I need all the help you can give.