In the repair process, it is important to consider all the nuances relating to building materials. The main problem arises when determining the amount of decoration wallpaper. To simplify the process of preparing for the repair, it is worth asking about how to calculate the wallpaper on the room. There are several options for calculating the total length and number of rolls. Standard formulas or online calculators can be used to determine results.
Why is it necessary to calculate the number of wallpapers for pasting a room
Those who want to make repairs on their own, namely to glue the wallpaper, do not always know and understand how to calculate the wallpaper on the room. But to be able to carry out such manipulations with calculations is simply necessary for several reasons:
- If you initially purchase an insufficient number of wallpapers, then it is difficult to find the same picture.
- Thanks to the correct calculations, time is saved for the search and purchase of material.
- A huge amount of non-refundable balances can be avoided. This is a loss of money.
These are the main nuances indicating the need for quality calculations.
Standard Roll Options
To calculate how many wallpapers per room you need in the process of wall decoration, you should know the standard parameters of the rolls. You need to pay attention to the marking, which indicates the width, length of the canvas:
- Manufacturers provide wallpaper with such width options: 0.52 m, 0.53 m, 0.7 m, 0.75 m, 0.9 m, 1 m, 1.02 m, 1.06 m.
- If the room will be decorated with photo wallpaper, then the width of the stylistic canvas can have any parameters.
- The standard length option is 10.5 m. There are canvases with a length of 5.5 and 25 m. They do not belong to the standard types of rolls.
Difficulties can arise when combining several wallpaper options with different widths and lengths of rolls.
What you need to consider when calculating diverse wallpapers
To understand how to calculate how much wallpaper you need per room, you need to take into account certain nuances:
- If there is a picture on the wallpaper, then you need to take into account the shift in the print report in each roll. This part is not suitable for gluing walls.
- It is necessary to consider the principle of docking strips. There are several options. The most common are overlapping and butt to butt.
- Some wallpapers may taper a little after drying, so you need to calculate for such shrinkage.
Other features may be indicated on manufacturer's markings. There are also defective units, which can significantly affect the further processing of data.
Counting in accordance with the parameters of the room in which there are openings
To determine the required number of wallpapers for pasting a room, it is worth initially measuring the parameters of the room. To do this, you must:
- Measure the height and width of the walls.
- Calculate the area of the walls of the room. First, determine the area of each surface separately, and then add the results. You need to use the standard formula where length is multiplied by height.
- Additionally, it is worth calculating the perimeter of each wall.
- Separately, the entrance doors, windows and other recesses are measured. Determine the area of elements by using the already known formula.
- Subtract the notch area parameter from the wall surface area.
Only after determining the parameters of the room it becomes clear how to calculate the wallpaper on the room. The resulting figure must be rounded to a larger value.
The principle of calculating the required number of strips for gluing a room
After the parameters of the room are determined, you can proceed to determine the required number of wallpapers. A perfectly simple algorithm is used. Here's how to calculate the wallpaper on the room, knowing the parameters of the room:
- It is necessary to add the length of the walls of the room - to determine the perimeter.
- The resulting number is divided by the width of the roll of wallpaper, which was selected for decoration. Thanks to such manipulations, the number of bands is determined.
- Then you can determine how many strips will be obtained from 1 roll with the declared length. It is necessary to divide the length of the roll by the height of the wall.
- In order not to cut extra strips, and subsequently not to buy extra material, you need to do the same principle for calculations regarding pieces above windows and doors.
For arithmetic manipulations, you can use the calculator. Then the error in the calculations will be minimal. This option will be ideal for rooms with a complex shape if there are niches or recesses in the walls.
Formula for calculating the number of rolls for any room
To determine the number of wallpaper strips for a room, you need a slightly different formula. To carry out such mathematical operations, the corresponding numerical data are needed. To decide how to count the rolls of wallpaper on the room, you need to use the existing data:
- It is necessary for calculations to use data that determine the required number of rolls.
- It is necessary to divide the number of all strips by the number that is obtained from one roll.
- Then you need to calculate the bands that are not used for gluing doors and windows. Subtract this number from the total and make a “transfer” into rolls. At least 1 roll is obtained.
There are special tables with which you can make the same calculations. This option will allow you to cope with the task faster. The only drawback is that in the calculations there may be large errors.
Determine the required number of wallpapers that have a symmetrical pattern
With wallpapers that have a large or small pattern that needs to be adjusted, calculations become more complicated. With the standard parameters of the finishing material when fitting, 1 extra strip is obtained. It can be used for gluing those areas that are above windows or doors.
How to calculate how much wallpaper you need per room, if you want to fit stripes according to the picture:
- You need to lay out 3 strips of 1 roll nearby.
- Determine which shift occurs when selecting a drawing.
- Use a measuring tape to determine the shear length. This is a report that will be repeated on every roll.
- If you multiply the length of the report by the number of rolls, it becomes clear how many residues will be obtained at the end of the repair.
Thanks to such indicators, it becomes easier to create a list of the necessary materials for wall decoration. Sometimes the report may differ in some units of procurement. Because of this, an error is obtained. Therefore, it is worth buying a little more wallpaper than it turned out in the calculations.
Effective online services for working with numbers
In addition to mathematical calculations using a calculator and selected tables, there are special online services. Working with programs of this type is very simple, but there are many services with an incomplete interface.
There are calculators to help you figure out how to calculate the number of wallpapers per room online, knowing the following options:
- the length, height and width of the room, its perimeter;
- area of door and window openings;
- the width and length of the selected wallpaper;
- features of the report.
Well-designed services will help to determine not only the amount of material needed by rolls, strips, but also the necessary volumes of glue. Sometimes there are additional functions to determine other parameters of the finishing material. Typically, paid programs have a set of additional calculations regarding gluing and wallpaper.