Roll requirements

Determining roll requirements – How to calculate the right amount of wallpaper

Correctly calculating your wallpaper requirements is crucial for smooth application and a perfect result. The number of rolls you need depends on several factors:

  • Room perimeter

  • Room height

  • Roll length and roll width

  • Pattern repeat of the wallpaper

  • Waste and safety reserve

You will find the exact dimensions of your chosen wallpaper in the respective product detail view.

Determining wallpaper requirements

To calculate the required number of wallpaper rolls, proceed as follows:

1️⃣ Determine the room perimeter

Add up the lengths of all walls:

Length of wall 1 + wall 2 + wall 3 + wall 4 = room perimeter

2️⃣ Determine the room height

Measure the room height and add approx. 5 cm allowance to ensure a clean cut.

3️⃣ Take the roll format into account

The most common roll format is the Euro roll:

10.05 m length × 0.53 m width

For large rolls or special formats, the dimensions must be taken into account accordingly.

4️⃣ Plan a safety reserve

Windows and doors should not be completely deducted in the calculation. It is advisable to plan for at least one reserve roll for later repairs or renovations.

Determining requirements for borders

Calculating wallpaper borders is much easier:

  1. Determine the room perimeter

  2. Divide the room perimeter by the border length

Standard borders usually have a length of 5 meters (sometimes also 10 meters).

Formula:

Room perimeter ÷ border length = required number of borders

Sample calculation – wallpaper requirements (0.53 m × 10.05 m)
Room perimeter (m) Room height (m) Number of rolls
10 2.25 5
15 2.25 7
20 2.25 9
25 2.25 12
10 2.50 6
15 2.50 8
20 2.50 10
25 2.50 12
10 2.75 6
15 2.75 8
20 2.75 11
25 2.75 14
10 3.00 6
15 3.00 9
20 3.00 12
25 3.00 15
10 3.25 7
15 3.25 10
20 3.25 13
25 3.25 16

Important note on patterned wallpapers

With wallpapers with a pattern repeat (pattern offset), the waste increases. In this case, an additional roll should be allowed for.

Professional advice for retailers & installers

Support from an experienced wallpaper distributor: Matex Tapeten Vertriebs GmbH.

If you have any questions about calculating the correct quantity, we will be happy to help.

Detailed examples of wallpaper requirements

This overview explains the basics of quantity planning. You will find a concrete step-by-step calculation for a room measuring 4 × 3 meters and tips on pattern repeat and waste in the guide to calculating wallpaper requirements.