How to calculate the required number of wallpapers per room: a simple formula

Wallpaper is perhaps the most popular material for wall decoration, presented in a wide range on the construction market. Process gluing can be carried out independently, which will avoid additional repair costs associated with wages of hired workers. But for the best result, certain rules must be observed from the very beginning. In particular, you need to know how to calculate the wallpaper needed for wall pasting.

wallpaper rolls

By correctly counting the number of wallpapers per room, you can avoid various unpleasant situations in the future:

  • The worst thing that an incorrect count can lead to is a lack of rolls. In this case, the pattern and integrity of the wall decoration may be violated, which will affect the appearance of the room, which will look careless and unfinished. Unfortunately, it is not always possible to purchase the missing meters. In order to avoid emergency cases during repairs and save your own nerves, you need to responsibly approach the measurement of room parameters and calculations.
  • A less tense situation is the remaining surplus. Of course, they can be left for future “patches” of possible damage, but with a high cost of wallpaper, such a mistake can lead to significant overpayments.

We make the necessary calculations

measuring walls

The first step is to measure the room as accurately as possible; parameters such as the length and height of the walls will be required. To do this, you need to use a construction tape measure. It should be noted that the measurements take place in two stages:

  • first, blank walls are measured without door and window openings;
  • further, the length and height of the sections above the door, as well as above and below the windows, are measured.

The accuracy of measurements determines the accuracy of all calculations. Therefore, you can find out how many rolls of wallpaper you need only on the basis of truthful numbers that correspond to reality.

Universal Formula

In order to accurately calculate the number of rolls, it is recommended to accurately apply the following algorithm of actions:

  • The primary task is to count the number of solid strips. To do this, the perimeter of a room without openings should be divided by the width of the roll, which may vary depending on the manufacturer and other factors. Therefore, before starting the calculation, it is advisable to familiarize yourself with the information provided on the label. selected wallpapers.
  • It is also worth paying attention to the length of the roll, which must be divided by the height of the walls in the room. This will allow you to find out how many solid strips you can get from one package.
  • The next step: dividing the number of required strips by their number in one roll. These simple arithmetic operations will help you find out how many rolls will be needed to paste over the blank walls of the room.
  • In a similar way, we count the number of pieces that will be pasted over the rest of the premises.
  • Summing up, determining the required number of rolls, taking into account their consumption specifically in your apartment.
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After completing these steps, you can accurately calculate how much wallpaper you need to paste over the room.

Important nuances

wallpaper border

A separate word should be said about wallpapering with a pattern, in which it is necessary to adjust the strips for its integrity. In this case, the required number of wallpapers increases markedly, and in direct proportion to the size of the rapport: the larger the area the pattern occupies, the greater the additional expense. As a rule, the number of rolls per room is increased by 1–2. To make accurate calculations, you will need to add the length of the rapport to each strip, which can be indicated on the label.

If the wall design is conceived from pairs of wallpapers (for example, a dark bottom and a light top connected by a border), then the calculations are made according to the example for surfaces above openings.

You can also purchase one extra roll if there is no self-confidence and experience in such work. In the process of gluing the wallpaper may tear, a piece of the wrong length may be cut, which will require the use of additional strips.

As in other construction work, the success of pasting walls largely depends on the right actions at the very initial stage. Accuracy and attentiveness will help to calculate how many rolls of wallpaper will be required.

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