1. Measure the height and width of the wall to be covered and include 'empty' spaces such as doors and windows in the calculation.

2 - Calculate how many drawing ratios (the measurement of the height of the drawing) are needed to cover the height of the wall. In  Hearts of Mary  by Pierre Frey  - on the right - the entire drawing measures 52cm in height. For a 300cm wall, 6 ratios are needed (52x6=312).

3. You know that for a sheet you need 312cm so a 10m roll of paper gives you 2 sheets (312x2=624cm).

4. Calculate how many sheets you need: the roll is 52cm wide and your wall is 350cm wide so you need 7 sheets (52x7=364).

5. Each roll contains 2 sheets and you need 7 of them so to cover the wall you need 4 rolls of paper.

6. If you are not convinced, write to us in chat (bottom right ;) )