M
Mike Mike
Calculate exactly how big your room is in square metres. Then add 10% to cater for breakages, or chipped or blemished tiles as they come out of the box. Then stop and THINK about what happens if you break a tile in 5 years, or decide to fit a new shower and need to take off all the tiles from one wall, or maybe change bath tub and need to remove and replace the first row of tiles around the bath.
I know it sounds silly contemplating making changes to your bathroom when you haven't even installed it yet, but seriously, given the number of people I see posting on here saying "I need to get hold of 20 x, y, z, tiles and they don't make them any more!" I would say that ordering an extra 'n' boxes and keeping them in a safe place may save you a lot of hassle in the future.
I know it sounds silly contemplating making changes to your bathroom when you haven't even installed it yet, but seriously, given the number of people I see posting on here saying "I need to get hold of 20 x, y, z, tiles and they don't make them any more!" I would say that ordering an extra 'n' boxes and keeping them in a safe place may save you a lot of hassle in the future.