Each tile should be measured separately which we have outlined below:
FLOOR: When measuring a bathroom floor, you should measure the length and the width of the room. You will then multiply the length and width and add 10%. This 10% covers any offcuts or breakages of tiles.
Example: if the room is 2100mm X 2400mm then it would look like this:
2.1 x 2.4 = 5.04 metres square
+ 10% (0.5) = 5.54 metres square
WALLS: Measure the length of the wall and then measure from the floor up to the height to which you would like your tiles to finish. Multiply the length with the height and then add 10%.
Example: Length of the wall: 2400mm and the height is 2400mm then it would look like this:
2.4 x 2.4 = 5.76 metres square
+ 10% (0.57) = 6.33 metres square
This process can be repeated for all other walls to be tiled in your bathroom. Once all walls have been measured you can add all the totals together to give you the total area. Your windows and door can be taken out of the total.