Guidelines for measuring your wall area
Vertical Wall Sizes: Take three measurements of the height in the left corner, middle and right to the nearest millimetre. Do not include the skirting board in the measurement.
Horizontal Wall Sizes: Take three measurements at the ceiling level, middle and low level to the nearest millimetre.
Take the largest vertical measurement and the largest horizontal measurement and enter these amounts into the width and height fields once you have chosen your wall mural.
To calculate the overall wall area you need to multiply both the largest vertical measurement and the largest horizontal measurement.