Hi all. I have a ridiculously small, smell mouldy and unused bathroom. I really need to sort it out with fully tiled walls. Anybody know how to work out how many square meters of tiles I need or even how to measure for them. Floor space is measuring at 8ft 5 in x 5ft. Normal ceiling height and 1 door. It's only myself and my daughter and we haven't a clue. Thanks in advance