How to calculate the wallpaper for the room. Calculation of wallpaper for the room. Required tools. Taking measurements and counting. Wall Area Calculation

A tape measure will help with this, but the type of wallpaper must be taken into account. Wallpaper with a pattern, paper, vinyl, fabric wallpaper, they all have a feature of length and width, as well as gluing on the walls, so the calculation must be carried out taking into account all factors, and not just the size of the room. There are several options for calculating the required number of wallpapers per room.

The number of wallpapers can be correctly calculated, knowing the perimeter of the room to be pasted over. The perimeter is the sum of all the sides, which means the perimeter of the room is the sum of all the sides along the length. How to get this number? In order to measure the perimeter, you will need a construction tape measure. The length of all rooms must be measured with a tape measure, it turns out 4 walls, 2 walls will be the same length, the remaining 2 walls will have a different length. Consider this on the example of a wall whose perimeter is 4x2. Two walls are 4 meters long and 2 walls are 2 meters long. The formula is as follows: 4x2 + 2x2 \u003d 12 meters the perimeter of the room.

Find out the height of the walls;
Calculate how many wallpaper strips come out of one wallpaper roll;
Calculate the number of required wallpaper strips for the room;
Calculate the number of wallpaper rolls needed.

The height of the walls of the room is measured in the same way as its width, using a tape measure, the tape measure weighs a little, it is very convenient to measure. The standard wall height in residential premises and apartments is 2.5-3 meters. To find out how many strips of wallpaper will come out of one roll of wallpaper, you need to divide the height of the walls by the length of the wallpaper in the roll, but for this you need to know how many meters of wallpaper are in one roll. If the wallpaper roll is standard, it has a length of 10 meters, if the height of our walls is 2.5 m, then the calculation formula will be: 10:2.5=4. It turned out that 4 stripes will come out of one roll of wallpaper. After the number of wallpaper strips from one roll has been calculated, you can calculate how many wallpaper strips will be required for a given room from the selected roll. To do this, you need to measure the width of the wallpaper roll and divide it by the perimeter of the room.

With standard wallpaper with a width of 53 cm and with 12 meters of the perimeter of the room to be glued, as in the example, the following formula is obtained: 12: 0.53 = 23, rounded up, which means that 23 strips of wallpaper will be needed to glue the room.

And the last step is to calculate the amount of wallpaper needed per room. The required number of strips for the room must be divided by the number of strips in the roll according to the formula: 23:4 = 6, rounded up. It turns out that for a room of 4x2 meters you will need 6 rolls of wallpaper with a margin.

Approximate calculations are given, since each room and room in it can have different heights, widths, differences, so it is worth making accurate and careful calculations, taking into account possible uneven walls and ceilings.

How to calculate the area of \u200b\u200bthe walls in a room (video)

How to calculate wallpaper by room area

To carry out this calculation, it is necessary to measure the entire area of \u200b\u200bthe room and its wall around the entire perimeter as follows:

Measure the length, width and height of the wall surface;
Add the length and width of the walls and multiply by 2, because. in the building, 2 identical walls and multiply by the height of the wall;
Multiply the width of the roll by the length.

After measuring the area of the room, you can consider the required number of wallpapers for gluing. Using the example of a room with an area of 4x2 m, you can draw up a formula for calculating wallpaper, 2x (4 + 2) x 2.5 \u003d 30 m 2, you get a pasted area. Next, you need to calculate how much area one roll will seal. Using the example of a standard roll, we obtain the formula: 0.53 m (standard roll width): 10 m (standard roll length) \u003d 5.3 m 2. One roll of standard wallpaper in width and length can cover 5.3 m 2 of the wall. The last step to correctly calculate the required number of wallpaper rolls per 4x2 meter room is to divide the surface area by the area of the wallpaper roll, for example, 30:5=6. For wallpapering a room with an area of 4x2 m and a height of 2.5 m, you will need 6 rolls of wallpaper. Both as a result of the first measurement, and according to the results of measurement by the area of the room, 6 rolls of wallpaper come out.

Calculations according to the formula are very accurate, there will be no extra wallpaper, as well as a lack of them, but when calculating, it is worth considering the features of the room for which the wallpaper is glued.

It is better to take wallpaper with a small margin in order to be able to restore the wall in case of damage to the wallpaper than to look for similar wallpapers later, which you can not find, an extra cut will always come in handy.

Calculation of wallpaper according to the drawing

The most difficult calculation of the necessary wallpaper for a room is the calculation of wallpaper with a pattern, it is difficult because the pattern needs to be selected, during which a lot of waste is generated. If there is a slope on the walls, uneven corners, or there is a difference in the height of the walls, there may be differences in the pattern. Proper gluing of wallpaper with a pattern, accurately choosing an ornament, will provide good view rooms without defects.

An important factor is the methods of wallpapering. Wallpaper with a pattern is glued only joint to joint in order to achieve a harmonious combination of the pattern.

In order to correctly select the required number of wallpaper with a pattern for a room, first of all, it is worth focusing on rapport, on the allowable distance between the elements of the pattern. Such an indicator for each type of wallpaper and pattern on them is individual. On wallpaper with floral patterns, the rapport is less, and on wallpaper with geometric shapes and lines, rapport is always greater. The consumption of wallpaper with geometric lines will be more than with floral patterns.

On each roll of wallpaper that requires selection during the gluing process, the exact variant of the rapport is indicated:

Geometry - above 50 mm;
Floral print - up to 50 mm;
Abstraction - 10-50 mm rapport.

The required number of wallpaper with a pattern is calculated according to the width of the pasted surface and its area, as in the selection ordinary wallpaper. The only feature is the rapport indicator on the roll. Big indicator rapport leads to the fact that you have to buy 2 or more rolls more than ordinary wallpaper without a pattern, and there will be a lot of leftovers.

Before choosing wallpaper with a pattern for your home, you need to calculate the area to be pasted, the number of wallpapers needed and the price, will it be profitable for the price? It is very difficult to pick up waste from wallpaper with a pattern to the places of slopes, openings, and they almost never fit anywhere.

Ready-made calculations of the number of wallpapers

In order not to waste time on measuring and calculating the area for wallpapering, a ready-made calculation table will help you accurately and quickly calculate the required number of wallpapers on the walls, which you can view and get ready-made indicators.

Focusing on the finished table, you can get data about:

The height of the walls and ceilings of the room;
room perimeter;
Roll length;
The number of rolls and strips of wallpaper.

These tables are approximate and when cutting wallpaper strips before gluing, you need to leave a little extra length to hide possible gaps on the walls.

Using ready-made indicators for calculating the walls of a room, as well as taking into account the width of wallpaper rolls, you can quickly and accurately calculate.

Calculation of the number of wallpapers (video)

Wallpapering is always a laborious process, even more difficult to find the exact right amount of wallpaper per room. Conducted accurate calculations of the size of the room using a tape measure, and sometimes an assistant, you can get the right indicators and calculate the right amount of wallpaper. When everything goes well in the repair, the repair will not be a burden, but a pleasure.

Despite the fact that the range of materials for the repair and decoration of houses and apartments is replenished almost every year with one or another new product, wallpaper does not lose its “leadership positions” and still remains, probably, the most popular way to decorate walls in residential premises. Moreover, the widest variety modern wallpaper, made using the most advanced technologies, allows you to finish in any interior style, authentically imitate wall cladding with many natural materials. And if we add here the relatively low cost and the possibility of independent finishing works, then the popularity of wallpaper gets a completely logical explanation.

Before the owners of housing, who have decided in favor of such a finish, the question will surely arise - how to calculate how much wallpaper is needed per room? We will try to help them with this - below is a convenient online calculator.

For those readers who have already been pasting wallpapers and, therefore, “savvy” theoretically, there should not be any problems using the program. Beginners may have unclear questions- some explanations on the use of the calculator and on the basic principles of calculation are given below.

Good afternoon everyone! There are several ways to calculate wallpaper by the area of \u200b\u200bthe room. In addition, the calculation of the quantity depends on the pattern on the wallpaper, the method of gluing - whether there is a need to customize them or whether they are glued in a row, without selection.

Wallpaper is a magnificent type of decoration, there are a great many of them - for every taste. It is desirable to calculate the wallpaper as accurately as possible so that there is not much waste left, and most importantly, that the purchased amount is enough for the room.

How to calculate wallpaper correctly

We set the size of the room:

Width = 3 meters
Length = 5.5 meters
Height = 2.5 meters

To determine the area of the sticker, you, the perimeter is the sum of all sides of the room, multiply by its height. In numbers it looks like this:

3+3+5.5+5.5= 17m x 2.5m = 42.5m2.

Now from the total area it is necessary to subtract the area of openings - this is a door and a window or two. We measure the width and height of the window with a tape measure - they are all different for everyone, but in the example we use the size of the area - 1.5x1.5 = 2.25m2 .

If you have and balcony door, then I propose to count the entire balcony block together, like a rectangle, since, as a rule, a battery is located under the window. Then the calculation will be: 1.7x 2.35 = 4m2, like mine.

Consider the door to the room. By area, it will be equal to 2.1x 0.8 \u003d 1.7 m2

Now let's calculate the total need for wallpaper:

42.5m2 (total area) - 2.25 (window) - 1.7 (door) = 38.6m2.

Or with a balcony 42.5 - 4 - 1.7 \u003d 36.8 m2.

Now you have to select the wallpaper to know its length and width and determine how many rolls you need. For example, you chose wallpaper 10 meters and a width of 0.53 meters, then the area of the roll = 5.3 m2. You need to take 38.6: 5.3 = 7.3 rolls, that is, 8 pieces.

wide wallpaper

If the wallpaper is meter long, then the area of the roll = 10.6 m2 and you will need 38.6: 10.6 = 3.64 or 4 pieces. If you plan to glue them, then check out the article - how to glue meter-long wallpaper correctly.

Suddenly, someone decided to stick wallpaper in two colors, then you can read about it in the article - sticking wallpaper in two colors. The total need for wallpaper will remain unchanged, just divide them into different colors.

My painter's workers calculate the number of wallpapers in their own way - they do not need the area, since the girls count the number of stripes on the old wallpaper on the walls. If the wallpaper has already been removed, then they measure the width of the wallpaper with a tape measure and apply the specified width around the entire perimeter of the room, calculating the number of stripes. Let's say it turned out 26 strips, which means you need 26: 4 \u003d 6.5 rolls. Round up to seven. And you know, they think just as well as I do with my arithmetic calculations.

Wallpaper calculation with pattern selection

Wallpaper with a selection of a pattern can be calculated according to the same principle, determining the area of \u200b\u200bthe walls. To choose a pattern, you need to shift the canvases by 15-30cm. So calculate that each roll will take up to 1.2 meters (4 strips x 0.3 m offset). That is, you will already get 3 whole canvases and a piece. Moreover, there is a pattern - the larger the pattern in size, the more you need to move the wallpaper for selection.
Of course, it is possible, in order to save money, and we all strive for this, to put these pieces into action and paste them over the wall behind the wall, closet and other objects. This is especially true if the wallpaper is expensive, and we are financially economical. There are different situations.
But I want to tell you that it is not for nothing that they say that "need for inventions is cunning." It is possible to combine the bottom or top of one wall from these meter or one and a half meter pieces, and the second will be from wallpaper of a different tone, texture. Or from them to insert into the wallpaper of another room. Here you have waste-free production, and it will turn out in an original way by design.

Now they offer many tables and “calculators” for calculating, but I am an “unbelieving Thomas” and I count everything myself, measure and calculate exactly according to the above method, which I shared with you.

Calculate number of wallpapers required for pasting a room is much easier than it seems. To do this, you just need to measure the room, study the label of the selected wallpaper and make simple calculations using the wallpaper calculator.

How to calculate the number of wallpapers for a room: step by step instructions.

What determines the consumption of wallpaper? There are three main factors that affect number of wallpaper rolls required for pasting the walls in the room:

The size and shape of the room. Everything is clear with this: without knowing at least the length, width and height of the walls of the room that is planned to be wallpapered, it will not work to make any calculations.
The width and length of the selected wallpaper roll. Most often, there are two types of wallpaper - 0.53 m wide and 1.06 m wide. The length of the wallpaper in a standard roll is 10 m plus or minus 5 cm. Some types of wallpaper may differ in width and length, so when going to the wallpaper store, you should take a calculator with you in order to recalculate if necessary.
The size and complexity of the pattern on the selected wallpaper. So, wallpaper with a large or intricate pattern requires pattern matching, which is why wallpaper consumption increases significantly. For comparison: from one roll of wallpaper without a pattern or with a pattern that does not require docking, 3-4 panels are obtained, and from a roll with a large pattern - only 2-3, depending on the height of the walls of the room.

That is, before proceeding with the calculations, you need to measure the room (preferably taking into account doors, windows, niches, bay windows and other convex-concave parts of it), choose the wallpaper you like and find out their exact dimensions by examining the label or information provided on the manufacturer's website.

To measure the room, you will need a long and flexible tape measure, an assistant who will hold the second end of the tape measure, and a stepladder if the ceilings in the room are high.

First you need to measure the room from corner to corner along one wall in length, then along a perpendicular wall - the width. And the last measurement - the height of the wall from floor to ceiling.

If the room has a complex shape, for example, with a bay window or a protruding beam, then you need to separately measure the wall where this planning element is present, laying a tape measure along all its recesses and protrusions.

Separately, you need to measure the width and height of the window and door, in order to then subtract their area from the total number of wallpaper panels.

All values obtained as a result of measurements must be recorded - they will be required for further calculation number of wallpapers to the room.

Studying information about selected wallpapers.

The easiest way to get the necessary information about the size of the selected wallpaper roll is on the website of the seller or manufacturer. If you couldn’t find the wallpaper you liked from home, you will have to go to the store and study the label on the spot.

The wallpaper label shows the dimensions of the roll (length and width), wallpaper type(non-woven, vinyl, etc.), country of origin and batch number. First of all, you need to find the dimensions of the roll - they are needed to calculate the number of wallpapers. The type of wallpaper will help you choose the right wallpaper paste, and the same lot number ensures that the wallpaper rolls do not differ in color.

Having completed all the measurements and received information about the selected wallpaper, you can proceed to the calculations.

Room length × 2 + Room width × 2 = Room perimeter (the sum of the lengths of its walls).

If the room has a complex shape, then the perimeter is calculated as follows:

The length of the first wall + The length of the second wall + The length of the third wall + The length of the fourth wall = The perimeter of the room (the sum of the lengths of its walls)

The resulting value should be written down, and if it turned out to be fractional, then rounded up to a whole number.

Example: room perimeter = 5 m (room length) × 2 + 3.75 m (room width) × 2 = 17.5 m (room perimeter).

The fractional number must be rounded to the nearest integer = 18 m. This is the perimeter of the room, which is needed for further calculations.

Next step - calculation of the number of panels of wallpaper to cover the walls of the room. This will require the values of the perimeter of the room and the width of the wallpaper roll. These data must be substituted into the formula:

Room perimeter ÷ Wallpaper roll width = Number of wallpaper panels.

Example: 18 m (room perimeter) ÷ 1.06 m (width of selected wallpaper roll) = 16.981.

The number of panels cannot be a fractional number, which means that it must be rounded up to the nearest integer = 17 panels.

Number of panels × (Wall height + 15 cm) ÷ Wallpaper roll length = Number of rolls.

Before substituting the height of the walls into the formula, you need to add another 10-15 cm to the measurement data. This is due to the fact that the walls in apartments are rarely perfectly even, and the height difference can reach those same 10-15 cm.

Example: 17 (number of panels) × 3 (wall height = 2.75 m + 15 cm) ÷ 10 m (wallpaper length) = 5.1 (number of rolls).

Calculation of the number of wallpapers around the perimeter of the room.

In principle, five rolls of wallpaper should be enough, especially if you subtract the area of the door and window openings from them, and use remnants of wallpaper. However, experienced craftsmen advise always rounding up and buying wallpaper with a margin. That is, it would be more correct to buy not five, but six rolls, and if the wallpaper has a large pattern, then seven, especially since there may be a marriage in some roll or the wallpaper will be rubbed or dirty during operation. Having a supply of wallpaper, it is easy to fix such shortcomings without re-gluing the entire room.

Skill count the number of wallpapers- a useful skill that will save both strength and the family budget, especially since it is not difficult to cope with this task.

The process of wallpapering is not as simple as it seems at first glance. In order to qualitatively and beautifully paste over a room with rolled wallpaper, it is necessary to make the correct measurements. Based on them, it is already easier to produce accurate calculations the required amount of wallpaper.

Required values

In order for the gluing process to go smoothly and without "extra nerves", as mentioned earlier, everything must be measured and calculated in advance. Otherwise, you may end up with a “surprise” in the form of a bare spot on the wall with a missing piece of wallpaper, or, conversely, too many rolls will remain.

First of all, for calculations, you will need such quantities as the length and height of each of the walls to be glued in the future.

For example, you can take an ordinary room standard sizes, let's say it has the following footage: the height of the walls is 2.5 m, the width of the room is 3 m, the length is 5 m.

The first thing to do is, armed with an ordinary tape measure, find out the length of each of the walls. Then we add the known values on paper: (3 + 5) x2 \u003d 16 m - this is the perimeter of the measured room.

Next, you need to measure the width of the wallpaper (usually, these parameters are written on each roll, the standard width is 0.5 m). The resulting number of the perimeter of the room is divided by the width of the wallpaper, that is, 16 m: 0.5 m = 32. This number shows how many strips of wallpaper will be needed for the room.

The next value that will be needed in the calculation is how many strips will be obtained from each roll in order to find out their number in the future. A standard roll has a footage of 10, 25 or 50 meters, but if a non-standard one was purchased, where fractional values are, then for ease of calculation we round up to an even number. We divide this length by the known height of the room wall. It turns out 10 m: 2.5 m = 4 - so many stripes will be obtained from one roll of wallpaper.

It remains the case for small things - to find out the exact number of rolls. To do this, you need to divide the number of required strips for the entire room by the number of strips in one roll. 32: 4 = 8 - so many rolls will be needed to completely paste over the selected room.

The masters, in turn, advise to still purchase one more roll of wallpaper, since there is always a chance of making a mistake or accidentally ruining several strips, and in order not to run after the next roll of the desired wallpaper (which may no longer be in the store) , it is better to always have a little in reserve. It will also always be possible to replace the damaged fragment with children or pets.

Instrument preparation

A very important process before directly pasting the walls with wallpaper is careful preparation, since during this process you will need a certain number of auxiliary tools and improvised means.

The very first item that you can’t do without is an ordinary pencil, they will need to mark the pending length on the wallpaper. It can be both special construction and ordinary.

Of course, you can’t do without a long ruler or construction tape measure. With their help, the parameters of the room (length, height, width) will be measured, and the wallpaper roll will be lined. It will be difficult and long to take measurements of the room space with a ruler, therefore it is better to use a tape measure for these purposes, and with its help, in turn, it is difficult to draw straight lines on a sheet of wallpaper. In this regard, it is better to take both.

To cut the canvases into separate sheets, a stationery knife or sharp scissors will come in handy, but I advise the craftsmen to use the first option, since it is easy to make cuts or cuts for sockets and wiring with it. It is also easy for them to give injections when they need to release air bubbles, but here it is wiser to use a needle, it will turn out more accurately and imperceptibly. In turn, scissors will come in handy for cutting out some “curly” parts, where clarity and smoothness of lines are required.

Of course, you will need a screwdriver to remove the protective protruding box from the switches or any other wall mounts.

Since the walls and corners in the house are not always perfectly even, and there is a pattern on the wallpaper, the building level will come in handy. With it, it will be easy to glue the strip so that both the pattern and the corners do not “curve”.

You will need two containers, one for water, and glue will be kneaded in the second. Water is needed to wipe off accidentally falling drops of glue in the wrong place with a cloth, if you quickly wipe it off, then there will be no traces left.

If we talk about a rag, then it must be clean and soft ( wet wallpaper easy to crush and damage). It is very important that in the process of wiping off excess glue, it is damp, but not wet, otherwise the wallpaper may become saturated with moisture and simply slide down the wall.

In order to mix the adhesive solution with high quality, you will need a construction mixer or an ordinary wooden stick, which will have to mix the ingredients for a long time and with high quality. Masters advise pouring glue not all at once, but in parts, so it will turn out to make it more uniform and without lumps.

In order for the glue to be applied evenly and quickly, it is best to use a roller or a wide brush with medium bristles. As for the roller, then its pile should be small.

A very convenient device for gluing is a paint bath. It has a recess for solutions and a ribbed surface with a bevel (so that the excess merges back). It is good to pour glue into it in small amounts, dip the roller there, and remove the excess by scrolling it on the ribbed side. It is very important that its size matches the width of the roller, otherwise there will be no sense from the bath.

A wallpaper spatula will be a good helper in getting rid of trapped air under the glued wallpaper. The main thing is that it should be either rubberized or plastic, otherwise the metal may crumple or tear a still wet, not dried strip. It “expels” not only air bubbles, but also excess glue, which must be immediately wiped off and removed.

For places such as joints between strips, there is a special roller. It is made of rubber or silicone and has the shape of a small round barrel. It is very convenient for them to push through the joints without causing damage or deformation to the wallpaper. There is also a special roller for angular contact of the surface with the wallpaper - these are places near the ceiling, near the floor or in the corners of the room. Due to their flat shape, it is easy for them to push through all the corners so that the strip holds well.

Of course, do not forget about electrical tape. With its help, you need to glue all the "bare" wires, which will later serve to install the socket and so on.

Of course, the above list can be supplemented with all sorts of newfangled devices, but this is enough for high-quality gluing of wallpaper.

Room area measurement

As mentioned earlier, without an accurate measurement of all three main parameters of the room, it will not be possible to calculate the exact number of wallpaper rolls. This is especially true of the case when you need to paste over more than one room in an apartment or house, but several.

To make it easier to visualize, you will need to draw a general schematic plan of the room. To do this, you will need a pencil, a ruler and a plain sheet of paper. You will also need a tape measure, with which space measurements will be made.

Having schematically marked the walls and the location of the windows on paper, it is necessary to sign such quantities as the height of the walls, the width and length of the room itself. Then specify the window parameters to subtract them from the total footage, since they do not need to be pasted over.

Next, we find out the area of \u200b\u200beach wall and add it together to find out the total number. To do this, we multiply the height by the width. Let's say that this space has a height of 2.5 m, a width of 3 m, and a length of 4 m.

We find out the area of the first wall: 2.5x3 \u003d 7.5 square meters. m. Next, we multiply this number by 2, since there are two such walls - they are opposite. 7.5 sq. m x 2 = 15 sq. m - a total of 2 walls. We do the same with the other two. (2.5 m x 4) x 2 = 20 sq. m. We add the obtained values \u200b\u200b- 10 +15 \u003d 25 square meters. m - the area of \u200b\u200bthe entire surface of the walls in the room.

Do not forget about the surface area of the window, which must be subtracted. First, it must be calculated in a known way. Let's take the dimensions of an ordinary window - width 1.35 m, height 1.45 m. 1.35 x 1.45 \u003d 1.96 square meters. m. The result obtained is subtracted from the total surface area of the walls of the room - 25 -1.96 \u003d 23.04 square meters. m - the area of \u200b\u200bthe pasted surface of the walls.

Every room has Entrance door or a passage, which is also not a surface, it does not need to be wallpapered. In this regard, the surface area of the door and the entrance space itself must be subtracted from the total wall area obtained above. An ordinary door with a transom has a height of 2.5 meters and a width of 0.8 m. 2.5 x 0.8 \u003d 2 square meters. m (door area with a gap from it to the ceiling).

Subtract the calculated area from the total - 23.04 - 2 = 21.04 sq. m.

From the result obtained, using simple mathematical calculations, you can find out the number of required wallpaper rolls for the room, knowing the coverage area of one roll.

Here, the length is also multiplied by the width, and then the total area of \u200b\u200bthe room is divided by the area of one wallpaper roll.

Non-standard surfaces

There are also rooms that have non-standard layout, but the calculation must still be carried out. To be 100% accurate, even in a room of standard sizes and parameters, the walls are not always even and they must first be leveled, otherwise the ornament or pattern on the wallpaper will be difficult to join over the entire surface of the walls.

Unusual surfaces include walls with rounded corners, or when the wall itself has the shape of a semicircle. There are rooms where the walls are rounded to the ceiling and have a domed upper part. There are also ledges or partitions that divide the space into zones and so on.

To determine the number of wallpaper rolls, you still have to calculate the area in this case. Masters advise to “cut” the space into convenient shapes (square, rectangle). To do this, the width of the wall and its height at the highest point are taken and mentally connected into a rectangle. Rounded triangles will remain at the corners, which are also divided into squares. Later, all the sums of the areas are added up, and the total area is obtained.

But many "experienced" upholsterers say that it is not necessary to calculate so thoroughly.

In the process of gluing, you just need to cut off the excess along the contour of the bend with a regular knife or a stationery knife (it will turn out more accurately with it).

If the wall has the parameters of an ordinary rectangle, but a convex shape in the form of a Russian letter c, then its width is measured using a tape measure, which must be pressed tightly against the surface. The height will be normal, without any problems and any changes. And then the area is calculated according to the well-known formula.

In the case when there are convex parts or certain structures on the wall (for example, a pipe from an exhaust hood, which was covered with rectangular sheets of drywall or PVC), then its area must also be calculated and added to the total surface. It's good when she has a clear angular shape, like a square or rectangle, but if there are rounded parts, then it is also better to calculate them, as well as “correct” figures, and then remove a small excess with a knife.

Roll sizes

After all the necessary parameters of the room are calculated, you should proceed to the calculation of the wallpaper. Before that, you need to know the width and length of the selected roll.

To date, there are several standards for the metric parameters of wallpaper, as manufacturers are both foreign and local, that is, Russian.

The width of the roll has many variations, but today there are three main sizes that most manufacturers try to adhere to:

53 cm- the most commonly used size, so it is found in foreign and local wallpaper brands. Since it is very convenient for gluing, it is preferred more than others.

70 cm- the second most frequent width. This size is more popular with European manufacturers. As everyone knows, people try to buy imported wallpapers, because they, in turn, are better in some respects, and therefore the demand for such a width is very high.
106 cm- as the masters say, the wider the wallpaper, the faster the process can be completed, but this is not always the case. With this width, “massive” wallpaper rolls are most often made.

For the Russian market, meter and half-meter wide wallpapers are preferred.

As for such a parameter as length, then everything is a little simpler.

In this case, there are also three main sizes:

The most basic length is 10.5 meters. It is followed by most wallpaper manufacturers. It is enough for 3 full strips on the wall.
For wallpaper rolls with a width of 53 centimeters, a length of 15 meters is characteristic. As a rule, these are wallpapers made of vinyl or non-woven.
For heavy wallpaper with a meter width, made of fiberglass or the same non-woven fabric, make a footage of 25 meters.

A wallpaper roll has such a thing as a coverage area, which varies from its length.

When a standard length of 1050 cm is made, and a width of 53 cm, then according to the formula (S \u003d a * b), 53,000 square meters are obtained. cm (5.3 sq. m). With a similar width, and a length of 1500 cm, the area will be equal to almost 80,000 square meters. cm (8 sqm). If we take a length of 2500 cm and a width of 106 cm, then here it turns out - 25 square meters. m. - 25000 sq. cm.

Rapport and drawing parameters

It may seem that wallpapering comes down to only calculating the footage, the number of strips, and then the rolls. Basically, this is true, but it only applies to wallpapers that do not have a pattern or complex ornament. In this case, you will need to adjust the wallpaper to make it look like a monolithic piece.

Before choosing wallpaper with a pattern, you need to determine what rapport is. Rapport is the repetition of a pattern or pattern on a wallpaper roll. In turn, it is divided into 2 types. It happens side (the pattern goes along the width of the sheet) and high-altitude (the ornament is repeated in height). This arrangement directly depends on the parameters of the canvas and the size and type of the ornament itself.

When gluing such wallpaper, there is one main need - to align the wallpaper strips according to the pattern, which affects the final result. The fact is that for such wallpapers there is a slightly different calculation of rolls.

To do everything right, you will need the symbols located on each such wallpaper:

If the designation is drawn on the label - an arrow along with 0, then this indicates that this wallpaper roll can be glued and joined with stripes without fear of violating the integrity of the ornament, there is not much difference.

When arrows are shown pointing at each other, then the wallpaper strips must be clearly joined at the edges. But, if the counter-pointing arrows are offset (one is higher than the other), then you need to glue with an offset up or down (in this case, a special calculation of the canvas will be made over the entire surface of the wall). As a rule, numbers are indicated on the packaging of such rolled sheets. For example - 55 \ 23, the first number indicates (in centimeters) the size of the ornament or pattern, and the second - how much (also in centimeters) you need to shift one strip relative to the other.
In the case when the arrows point to each other from the bottom up, this means that during the arrangement of the sheets of wallpaper, there should be an opposite docking.

Do not throw away short stripes with a pattern.

They can be used for the space under the window, between the battery and the window sill, or for the wall gap above the door.

From the above, it is clear that the calculation of material with rapport will be different. First, you need to find out the perimeter of the wall, then divide it by the width of the wallpaper and get the number of stripes you need. Then, you need to calculate how many offsets will need to be done on one strip, the larger the pattern, the more wallpaper will be needed. Knowing this information, we find the number of rolls.