Glue wallpaper: how to measure the area of ​​the room?

Getting to repair, it is necessary to represent wellscope of work to buy the right amount of materials or to check the estimate of the brigade employed by the builders. We offer an article on how to correctly measure the area of ​​a room.

Required Tools

Today every professional is armed with modernpocket computers, which includes ultrasonic measuring tape. With its help it is easy to calculate not only the area, but also the volume with the perimeter of any room. If you want, by installing the application, you can turn any "Android" device into a planimeter (a device for measuring). If you use a traditional tape measure, you should have a plumb line for accuracy of height measurement.

How to measure the area of ​​a room with uneven walls? This should be done in two places - the most narrow and wide, taking as a basis the average indicators. For example, the height of the wall is 2.54 m and 2.60 m. The average figure will be 2.57 meters (2.54 + 2.60): 2.

Calculation formula for a rectangular room

The easiest way to calculate the area of ​​a roomstandard rectangular shape. To do this, you need to make two measurements: the length and width of the floor. Having freed the territory from bulky items, it is advisable to dismantle skirting boards for more accurate indicators. The results should be expressed in square meters.

The area of ​​the room is determined by the formula: S = a * b, Where a and bis the measured length and width. If a = 4.75 m, and b = 3.20 m, then S = 15.2 square meters. m. The dimensions allow you to purchase wallpaper for the ceiling.

How to measure the area of ​​the room for wallpapering? To do this, you need to know the perimeter: P = (a + b) * 2 and the height of the walls (h). S = P * h. If h = 2.5 m, then for our example S = 39.75 square meters. m. The second step is to subtract the area of ​​areas that do not require priming and wallpapering. Most often these are windows and doors. For example, the area of ​​the window is 1.94 square meters. m, and the door - 1.18 square meters. m. Then you need to buy supplies for an area of ​​36.63 square meters. m.

Non-standard room

With an unusual shape of the room, it should be dividedto the possible number of rectangles, adding the area of ​​each. If in addition to the rectangles are allocated other geometric shapes, the calculation is done according to the formulas proposed below.

How to measure the area of ​​a room in square meters, if it has the shape of a circle? You should use the formula: S = Pi * r², Where r Is the radius of the circle. For example, it is 1.5 m, then S = 7.07 sq. M. m. The number Pi can be taken with an accuracy of up to three characters - 3.14.

If the room has the shape of a triangle, it is more convenientall use the formula of Heron, which is shown in the picture above. To calculate the area, you should know the dimensions of all three sides and find a half -perimeter. If a = 1.8 m, b = 2.3 m, c = 1.9 m, the half -perimeter will be 3 meters. Substituting the size in the formula, you can get the result.

Walls with niches and ledges

Ventilation structures, ledges and nichesshould be taken into account when calculating, in order to acquire the right amount of materials. How to measure the area of ​​the room in their presence? The area of ​​a single site should be calculated additionally, either to add to the final result, or subtract from it. If there is a niche in the wall that requires wallpapering, its dimensions should supplement the total area. If repair of a ceiling with a projection is supposed, it is necessary to take its value from the final result.

Nevertheless, professionals advise buyingmaterials are not strictly calculated, but adding 5% to unforeseen expenses. During the works it is not always possible to pick up what was purchased in advance. Can differ the color of the wallpaper from the new batch, or the necessary colors are completely absent from the warehouse.

Number of wallpapers

Answering the question how to measure the area of ​​the room,It is impossible to get around the problem of the number of wallpapers needed for repair. They are sold in rolls of different widths, without a pattern and with a complex color that requires adjustment. Let's consider both variants:

• Wallpaper without the need for a drawingare calculated strictly by area. For example, rolls 0.53 m wide, whose length is 10 meters, are chosen. The area of ​​each roll is 5.3 square meters. m. For the area of ​​the walls 36.63 sq. m., 7 rolls (36.63 m: 5.3 m = 6.9) will be required. Currently it is fashionable to use two colors or two different textures of wallpaper. Then it is necessary to take into account the number of not only rolls, but also strips. With a ceiling height of 2.5 meters from each roll will be 4 strips. Determined in their sequence, it is necessary to decide which wallpaper colors will be purchased in three, and which - in four rolls. Perhaps, their number will be increased because of the need for a color combination.
• Solving the problem of how to measure the area of ​​a room,should identify the areas where you can put the rest of the pieces of wallpaper into action. For example, behind the built-in closet. This is due to the fact that due to the displacement of the canvas in 15-30 cm there will remain wallpaper, which will not be possible to use in open spaces. If there are no hidden areas, then the number of rolls will increase. With a displacement of 0.3 m, the length of the ten-meter roll used is 8.8 meters, and it should be taken into account. The useful area is not 5,3, and 4,66 square meters. For our example (36.63 m: 4.66 m = 7.86), it is no longer necessary to have 7, but 8 rolls.

These calculations convincingly prove that, given the appreciation of materials, it is impossible to start repairs without measuring the area, relying on approximate figures.