Very often it can be difficult to count properly the right size and the quantity of the needed materials, especially for the glass tiled walls bathroom. For that you might need to ask a professional help.
Nowadays quite a number of companies is offering such service as making all the calculation for you regarding tiles. Usually it follows the very simple scheme – you have to call and order that service having already in mind the ideas and pictures of what design of the bathroom you would like to have. After the specialist is coming to your place to measure the bathroom, to get a detailed description of what you actually want to have, also the master will discuss the size, shapes, colours of the chosen tiles, the stitches between the tiles. After that all parameters are considered and you will get exactly what you need for the particular bathroom space.