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Calculate the number of rolls of wallpaper you need

In this guide we'll show you exactly how to calculate the amount of wallpaper you'll need
25 August, 2022

We show you how to calculate the required number of rolls by means of an example. The wall in this example is 400 cm wide and 260 cm high. The wallpaper roll is 53 cm wide and 10 m long.

Step 1: calculate the number of strips

Measure the width of the wall or walls that you plan to wallpaper. Divide the width of the wall by the width of the roll. Round up the result for the required number of strips.

Ex. 400 cm (wall width) / 53 cm (roll width) = 7.54 strips

Once rounded up, you require 8 strips.

Step 2: calculate how many strips you can obtain from one roll

Divide the total length of the roll by the height of your wall. We recommend including a surplus of 5 to 10 centimetres that can be cut from the top and bottom of each strip.

Ex. 1000 cm (roll length) / 260 cm + 10 cm (wall height + surplus) = 3.7

Round down the result. In this case you can get 3 complete strips from one roll of wallpaper.

Step 3: divide the required number of strips by the number of strips per roll

8 / 3 = 2.33

Once rounded up, you therefore require 3 rolls of wallpaper.

Don’t forget to factor in wastage. If you order patterned wallpaper, then you’ll need to match the patterns on the various strips.
This can result in wastage. The bigger the motif, the more potential wastage you’ll have… You can use large pieces of wastage for short strips, such as above doors etc.

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