Leroy Merlin wallpaper calculation. How to calculate how much wallpaper you need. Calculations for combined cladding

Cosmetic or major repairs to the house should begin with the preparation of a preliminary estimate that can reflect the quantity and price of the necessary materials for restoration work. If you decide to only replace the wallpaper in the room, you will need an accurate calculation of the number of rolls. This will allow you to purchase the required amount of material, save money and avoid possible problems.

How to start calculating wallpaper on the wall?

Strange as it may seem, but for an accurate calculation, you do not have to take rolls and try in every possible way to find out how many square or linear meters of vinyl, paper, non-woven or fiberglass are in them.

Initially, it is necessary to find out the exact area of \u200b\u200bthe room that we will paste over. Of course, floors do not need to be taken into account, since we are interested in the walls and, possibly, the ceiling, if you plan to decorate it to match the walls. For measurements, it is enough to arm yourself with a tape measure and take measurements around the entire perimeter of the walls.

To get the most accurate result, measurements are performed twice: the first near the baseboards, and the second under the ceiling. Even with a slight curvature of the walls, there may be a discrepancy in the results. This will reveal the error that will have to be taken into account when calculating materials.

Quite often, a situation arises when the lower measurement at the plinth showed a result of 8 meters. That is, each of the four walls has 2 meters. Accordingly, the room has the shape of a perfect cube. But measurements near the ceiling can be several centimeters smaller. Based on this, we can conclude that the room in volume is not a cube, but a truncated pyramid or prism. Even small discrepancies will lead to the fact that the corners of the wallpaper at the top will deviate from the general pattern of the material.

Because of this, wallpaper should be glued horizontally. The transverse overlay of the material can hide the unevenness of the room. As a result, we can conclude that measurements allow you to find out not only the perimeter of the room, but also to find out the true geometry of the room, respectively, you can choose the most effective finishing option.

Further steps to calculate the number of wallpapers on the wall consist of a fairly simple miscalculation. To do this, the obtained values are substituted into the formula S \u003d a * b. In this case, a and b are the sides of the rectangle that the wall protrudes. After that, it is necessary to measure window and door openings, they are calculated using this formula, only the obtained values \u200b\u200bare subtracted from the entire area of \u200b\u200bthe wall. As a result, you can get fairly accurate values for the amount of wallpaper needed for pasting the walls.

To date, there are several options for calculating wallpaper on the wall:

By the number of stripes and the perimeter of the room.
According to the total area of \u200b\u200bthe walls that need to be pasted over.
When using a special online calculator.

To choose the best option for you, consider each of the options in more detail.

Calculation of wallpaper on the wall by the number of stripes and the perimeter of the room.

This option provides for an accurate determination of the number of strips of material that will be required for pasting a particular room. To do this, you must perform the following steps:

Initially, the width and length of the room are measured. Based on the data obtained, the total perimeter of the room is determined.
The width of the door and window opening is also measured. The data obtained must be subtracted from the total perimeter.
After that, the resulting value is divided by the width of the wallpaper roll that is planned to be used.
The resulting value should be rounded up to an integer value. This value will be the number of stripes required for gluing.
When you know how many strips are needed for a particular wall, this value must be divided by the length of one roll.
In order to have enough material, the obtained values are rounded up.

In this way, the exact number of strips and rolls of wallpaper can be obtained. In order to get acquainted with the calculation methodology in more detail, it is necessary to consider all the steps on a specific example.

Calculation example. If you need to paste over a room with dimensions of 7 m by 3 m and a wall height of 2.5 m, which has a window opening of 2 m by 1.5 m and a doorway of 1 m by 2 m, you must specify the dimensions of the wallpaper roll: length 10 m, and width 53 cm.

To calculate the required number of rolls, you will need to perform the following manipulations:

Determination of the perimeter of the entire room: (7 + 3) x2 \u003d 20 meters.
Calculation of the width of the door and window opening: 3 + 1 = 3 meters.
Calculation of the total perimeter minus openings: 20-3=17 meters.
The resulting value must be divided by the width of the material roll: 17/0.53=32. The result shows that 32 strips of the selected wallpaper will be required for this room.
To calculate the number of strips in a roll, it is worth dividing the total length of one roll by the height of the walls: 10/2.5=4. This indicates that there are 4 strips in one roll.
The last step is the division of the number of all strips into the number of segments in one roll: 32/4=8.

Pretty simple mathematical calculations will allow you to get the answer that 8 rolls of the selected wallpaper will be required to paste this room. At the same time, it is worth remembering that this calculation method does not take into account the required amount of material under and above horse and door openings. Accordingly, you will have to buy a little more material.

Calculation of the number of wallpapers on the walls by the area of the pasted surfaces.

This is a more economical and accurate calculation method, especially when it comes to a room with a large area. This option is based on determining the entire area of the wall surfaces that need to be pasted over.

To do this, you must perform the following steps:

Initially, the entire perimeter of the room is measured and multiplied by the height of the walls.
At the same time, it is also worth calculating the openings of doors and windows. The data obtained must be subtracted from the total area of \u200b\u200bthe room, which will allow you to get the exact size of the surfaces to be glued.
To calculate the area of the web of the material used, it is enough to multiply the length of the roll by its width.
After that, it is enough to divide the total area of \u200b\u200bthe room by the area of \u200b\u200bthe material in one roll.
The values obtained must be rounded up. This data will be the number of rolls.

Consider this method of miscalculation on a specific example. We take the same data as for the first option.

To measure the perimeter: (7+3)x2=20 meters.
The pasting area is calculated by multiplying the perimeter by the height of the walls: 20 * 2.5 \u003d 50 sq.m.
The total area of the room without door and window openings: (2*1.5)+(1*2)=5 sq.m.
As a result, you can get the exact amount of area that needs to be pasted over: 50-5 = 45 sq.m.
As for the calculation of the wallpaper in one roll, for this it is necessary to multiply its length by the width: 10 * 0.53 \u003d 5.3 sq.m.
The last step is the division of the area of one roll into the total area of \u200b\u200bthe room: 45 / 5.3 = 8.4. Thus, we found out that 8.4 rolls of selected wallpaper will be required per room. As a result, it is necessary to round the received data and purchase 9 rolls of material.

The given examples show that the results of the first and second variants are almost identical. In this case, the second method allows you to take into account the space under and above the openings. Because of this, we can conclude that the calculation itself is not very complicated and both options can be applied in practice.

Calculation of wallpaper on the wall using an online calculator.

If there is no possibility or desire to independently calculate the necessary materials for gluing a room, you can use a special online calculator. Today, there are a lot of sites on the Internet that allow you to use this service for free.

To carry out the calculations, you will have to take small measurements of the room, which will need to be entered into the program, namely:

The length and width of the room.
Wall height from floor to ceiling.
The length and width of the wallpaper roll that you plan to use for pasting.

All of the above parameters must be entered in the appropriate fields of the online calculator. After that, you can get the finished result of the required number of wallpapers.

At the same time, it is worth noting that quite often wallpaper with drawings is used for pasting a room, which must be joined with an adjacent canvas. Accordingly, the calculation must be carried out from the size of the report (the size of the ornament or pattern). Some online calculators have the possibility of this type of calculation, which will save a lot of time, effort and money.

Features of the use of different methods for calculating wallpaper for walls

All of the above options for calculating the material for the walls allow you to quite accurately determine the amount of wallpaper needed. But this is only if the walls of the room have perfectly even parameters, and the wallpaper itself does not have large patterns that require additional adjustment when pasting.

If the walls have ledges or niches, their dimensions must also be taken into account in the calculation. To do this, make appropriate notes or records.

A more difficult task is to calculate the number of wallpapers with large patterns. When pasting, these materials require adjustment of the canvases at a certain distance. This interval of the pattern, which is repeated, is called a report. In order for the miscalculations to be accurate, one report length is added to each roll of wallpaper, as a rule, it does not exceed 25 centimeters. Quite often, the manufacturer indicates this parameter on the packaging of the material. If the value is missing, then you can take measurements yourself using a tape measure.

In this case, a 10-meter roll, which is used for a wall height of 2.5 meters, will have three strips, and not four, as was originally calculated. All this must be taken into account in order to avoid troubles and additional costs in the future. As practice shows, if you plan to paste over a room of 23-25 sq.m., it is worth buying two additional rolls of wallpaper. If the room is larger, add one more for every 6 rolls.

Apartment renovation activities begin with preparatory calculations, definitions of consumables in the right quantities that may be needed in the process of finishing the wall covering. Before pasting the walls in the apartment with new wallpaper, the type of finishing material and its quantity for pasting are initially determined. The calculation must be made carefully in order to avoid additional problems during repair operations and unnecessary material costs. The calculator will help you calculate how much wallpaper you need in any room.

How to correctly determine the number of rolls

Before buying new wallpaper for pasting walls, you need to make an accurate calculation of the required amount of material. Incorrect counting leads to shortages or leftovers of surplus purchased raw materials. When determining the required amount of raw materials, the dimensions of the wall areas in the room are calculated, and then the parameters of doors and windows are subtracted from them. The next step is to divide the result obtained by the calculated area of the new roll.

The calculation formula is not very complicated:

Number of rolls = S st.: S roll. x k

S st. - area of four walls;

S rudder - the area of the entire roll, this value is obtained by multiplying the length of the roll by their width, the standard length is about 10 meters, the width is indicated on the package;

k - coefficient. stock, is used to take into account the cost of making corners, inversions, and repeating the pattern. It is equal to 1.1–1.2.

The calculator will calculate the number of wallpaper rolls per room if there is no desire to calculate using a formula.

Such a calculation is in demand when planning wall pasting on your own or when contacting professional craftsmen, because using this calculation, you can provide for the cost of purchasing materials.

Initial values for wallpaper calculation

Basic data for calculating the finishing material:

the perimeter of the walls (the sum of all lengths in meters);
room height;
sheet width (the most common sizes are 0.5; 0.56; 0.6; 0.75 meters);
length in one package (the most common samples are 7; 10.5; 12 and 18 meters long);
how many windows are in the room;
window length and width;
number of doors;
door width and height.

The dimensions of the areas of windows and doors are needed to exclude them from the result.

Features of working with large ornaments on wallpaper

You should always consider the pattern on the wallpaper. With colors that do not require joining and fitting, you can purchase the amount of material obtained using the calculation calculation. In this case no additional calculations are needed.

When choosing a material with large fragments of the ornament, docking is required; standard actions using costing are not appropriate. In practice, the masters recommend adding two rolls if the area of the room is not more than 22 square meters.

It is necessary to take into account the pattern - the waste is directly proportional to the size of the rapport. It is indicated on the packaging label. Rapport is the frequency of repetition of a fragment on a trellis. The pattern must be correctly aligned between adjacent canvases.

Tip: when choosing wallpaper material, you must carefully follow the series number indicated on the labels so that there are no differences in hue and color saturation in different packages.

Choosing the Right Calculator

The calculator makes a calculation with an increase of 10 cm for one cut strip of the workpiece.

The wallpaper calculation calculator allows you to quickly determine the number of wallpapers in rolls and square meters, this allows you to reduce the time to prepare for the main work. The online calculator makes the calculation taking into account the savings in raw materials, subtracting the area of windows and doors, adding 10% for possible marriage and trimming. After receiving the calculated result, it is necessary to round it up to a whole roll.

Tip: when choosing a suitable calculator for calculating wallpaper, you need to make sure that it is able to take into account not only the usual parameters of the room, but also can perform complex calculations, taking into account the size of the rapport, roll parameters. The rapport value is added to the length of each piece of wallpaper for the convenience of comparing the ornament on adjacent canvases.

When choosing wallpaper with large patterns, plants and other complex shapes, it is necessary to calculate the number of rapports per cut canvas. The number of rolls directly depends on how long the repetition period of the same pattern will be. The product label contains information about the amount of rapport.

The calculation account does not take into account the dimensions of niches, ledges and other complex areas in the premises. A decision is made whether to seal the places covered with furniture, shelving, wardrobes. Even places behind lonely chests of drawers or sideboards are considered.

The wallpaper calculator for the area of \u200b\u200bthe room calculates the consumption of materials in the most simplified way. It is enough to measure along the plinth with a tape measure the length of all four walls, the height from floor to ceiling, indicate the length and width of the selected finishing material. As a result, a very approximate calculation of the number of wallpapers for a given dwelling is performed.

The wallpaper calculator taking into account doors has the ability to make a more economical calculation, taking into account the area of the doorway that does not require gluing. When calculating the consumption of wallpaper, the dimensions of the doors are subtracted from the total result.

In order to more accurately determine the required amount of finishing material, use a wallpaper calculator, taking into account windows. The given length, width and number of window openings are taken into account in the total calculation. This method allows you to get a more accurate budget result.

Calculation wallpaper calculator online gives the most correct result. It helps to accurately calculate the following quantities:

the number of wallpapers in rolls and square meters required for pasting the room;
the amount of glue needed;
the amount of money to purchase all materials;
the size of the residual pieces after the work done in square meters and rolls.

For a detailed operational calculation, you need to enter the necessary data in special columns:

length and width of the roll in meters;
the size of the glued field, if gluing will be done with an overlap;
price of one roll;
cost of adhesive material;
the rapport value indicated on the package;
length and height of each wall in meters;
window width and height in meters;
number of windows;
height and width in meters of doors and their number.

After filling in all the required columns, just click the "calculate" button and get reliable information.

Tip: if the wall of the room is made with niches or ledges, then you need to add their detailed parameters to the total length of the wall. Wallpaper will be used up in larger quantities due to the processing of additional corners. When buying, you need to purchase two rolls in reserve in case the wall covering is damaged as a result of repair work, children's pranks or games with pets.calculate how much wallpaper you need

Simplified Calculation Method

When choosing wallpapers that do not require joining and fitting the ornament, the calculation is simpler:

The calculator itself will find the perimeter of the room by adding the lengths of all four sides.
Determine the number of finished canvases for a given room by dividing the perimeter by the width of the sheet.
Calculates how many banners fit in a whole roll by dividing the actual length of the roll by the height of the wall. This will show the number of scraps of materials.
Calculates the number of rolls for a given room by dividing the total number of sheets by the number of them in one roll.

The online calculator will calculate the wallpaper quickly and you do not need to multiply and divide on paper in a column.

Standard wallpaper sizes

Our compatriots used to be the most acceptable standard wallpaper width, which was 53 cm, and the length was 10.05 m. These dimensions are still confirmed by the interstate standard.

Modern Russian manufacturers to this day adhere to the listed sizes, but they have begun to produce wide wallpapers for walls - 1.06 m much more often, as they are of increasing interest to our compatriots. For German or Italian companies, the width of the wallpaper roll is 0.53; 0.6; 0.7; 1.06; 1.4 m

To glue wallpaper with a width of 1 meter, unlike the traditional 0.53 m, is much faster, and there are fewer seams on the walls.

A number of manufacturers produce products of various sizes. The dimensions of textile wallpaper for walls can be 3.18 m wide and up to 50 m long. But it is worth noting that such products are very limited, as they are expensive and status.

In this case, manufacturers are guided by GOST 6810-2002, and you will read more detailed information about them in the article "". The table shows the dimensions of the textile wall covering.

As we see , meter wallpapers or canvases close to this standard are offered by manufacturers from any material.

But still, according to studies compiled by ABARUS Market Research according to FSGS RF 09.12.2015 "Market of rolled wall materials: paper wallpaper, non-woven, vinyl, glass wallpaper", revealed the dynamics of the increase in the share of vinyl wallpaper in comparison with the total production volume.

Offer Chart

The table shows the characteristics of vinyl sheets, they are produced according to the state standard.

A roll of premium wallpaper from the Belgian factory Omexco has a width of 90, 100 and 140 cm, while the collections of the French company Elitis offer samples with a width of 70 and 90 cm. According to our research, Russian consumers, until recently, preferred wallpaper for walls with a roll width of 0, 53 m. But according to data collected in 2012, wide wallpaper sizes are now a priority - 1.06 m.

After analyzing the sizes of wallpaper in rolls that are currently being sold, we have compiled a table where we have classified all the wall paintings in demand.

The formula for calculating the square of the roll

Knowing the width and length of the roll, it is easy to calculate its quadrature.

$\quicklatex(size=25)\boxed(roll_s = (A\times B)$

S roll - area;
A - width;
B is the length.

Let's say we need to find out how many squares there will be in a roll meter canvases with a length of 10 meters. That is, A \u003d 1.06 m, B \u003d 10 m, which means

S \u003d 1.06 x 10 \u003d 10.06 m 2.

Instructions for calculating the number of wallpapers on the walls

For this, several formulas are used, because not all rooms are rectangular - there are rooms of various geometric shapes:

oval;
trapezoidal;
triangular;
multifaceted.

Rectangular walls

We use a regular tape measure to get an accurate result. To correctly calculate the wallpaper for any room, measurements are taken in meters, accuracy up to one centimeter (two decimal places) is sufficient.

Calculate the area of \u200b\u200beach wall, remove the quadrature of door or window openings from it, add up the resulting numbers.

Calculate the area using the formula: $$\quicklatex(size=25)\boxed( S = ((a\times h))+((a_(1)\times h))+((b\times h))+( (b_(1)\times h)))$$

S is the area of the wall;
h is the height of the room;
a, а1 – d>length;
b, b1 - width

After counting, subtract the area of the openings and get the required figure.

Measure the perimeter of the entire room, multiply it by the height, subtract the area of windows or doors from the resulting quadrature.

Perimeter - the sum of the lengths of all sides of the room, it is better to measure by the floor. Measure the length of each wall from corner to corner and add up the 4 numbers..
$$\quicklatex(size=25)\boxed(P = AB+BC+CD+DA)$$

P - the perimeter of the room;
AB, BC, CD, DA - wall lengths.

Multiply the result by the height to get the area. We will calculate according to the formula:

$$\quicklatex(size=25)\boxed(S = (P\times h))$$

S is the area of the room;
P is the perimeter of the room;
h is the height of the wall.

To make the calculation of wallpaper according to the area of the room reliable, it is necessary to subtract the area of door or window openings from the total area of \u200b\u200bthe walls. Having a tape measure, this is not difficult to do, just measure their height and length. But we offer you tables with their standard sizes.

The table shows the overall dimensions, area of window and balcony door blocks made according to GOST 23166-99 which apply to products made of wood, plastic, metal alloys.

The figure shows various design options for window and balcony door blocks.

Internal wooden doors are manufactured according to GOST 6629-88 and standard sizes of typical openings are shown in the table.

In addition to standard door sizes, when all parameters are known, there is a possibility of installing non-standard canvases. Especially this practice is used in low-rise construction.

The area of window and door openings is measured along the outer contour of the box.

The diagram shows the dimensions required for the calculation.
$$\quicklatex(size=25)\boxed(S = (A\times h))$$

S - opening area;
A - the width of the opening;
h is its height.

If it is not possible to determine the exact dimensions, then the width dimensions are easy to find on your own.

To do this, the width of the opening is determined by the formula:

A of the opening \u003d A of the canvas + A of the box ∗ 2 + A of the spare gap for filling with mounting foam (on both sides of the canvas).

The height of the opening is also considered:

opening h = h canvas + h (thickness) of the box + h threshold + h spare gaptop and bottom.

To calculate the arched opening, you must:

Visually break it into a rectangle and a semicircle.

$$\quicklatex(size=25)\boxed(S = (A\times h))$$
Where:

S - opening area;
A - opening width;
h is its height.

b) make another calculation according to the formula:

$$\quicklatex(size=25)\boxed(S =(\frac (\pi\times R^(2))(2)))$$

S - opening area;
π is a constant number, the value of which is 3.14;
R is the radius, which in this case is equal to half the length between opposite walls.

Add up the resulting areas and get the total area of the opening.

You need to know that according to the standards, depending on the functional purpose of the room, the dimensions of the door panels have different sizes.

Walls with complex configurations

If you know how to correctly calculate how much wallpaper you need for a room that has various shapes, these tables will help you cope with the task.

There are also rooms with round configurations.

Their area will be calculated using the following formula:

Attic rooms have such design features.

Trapezoidal wall shape

Lovers of extraordinary interiors

Before counting the number of wallpapers for any room, take the right measurements. If you use a laser tape measure, then make sure that its beam is directed strictly perpendicular to the surface. Otherwise, there will be a large error in measurements and final results.

You can determine how many rolls of wallpaper you need to wallpaper a room in the following sequence:

But if you want to know the exact figure without tedious calculations and knowledge of geometric formulas, then the calculation of the number of wallpapers per room is presented in the following table. To compile it, you need:

area of the room;
ceiling height;
data on how many square meters (m 2) are in one roll of wallpaper (length times width).

The data is calculated for an average room with one door and a window, so you will need to subtract no more than 7 m from one roll and discard 10% of the real area for trimming.

If the sheets need to match the pattern, you will have to add 15-20% - for every 6 rolls lay one more additional one.

Expert opinion website

We will also tell you how to determine the number of sheets in one roll. To do this, you need to know how many meters is the total length (indicated on the packaging insert) and the height of the future canvas. Let's say the length of the roll is 10.05 m, and the height of the web is 3.45 m.

10,05:3,45=2,91

In this case, an integer 2 is obtained, which means that only two full-fledged canvases can be obtained from one canvas of this length. The remaining 3.19 m long cut can be put into places of lower height or left in reserve. But if you need to customize the pattern, you will be left with an even smaller piece.

It is important to remember that most of the paintings are made with a compatible pattern, therefore, the consumption of wallpaper per room will be greater than in the case of simple wallpaper without patterns.

Starting repairs, you will inevitably face the problem of how to correctly calculate the required amount of materials, in particular, wallpaper. Whether you are doing repairs on your own, or resorting to the help of specialists, it is better to independently control how many rolls of wallpaper you will need to purchase for each room.

How to correctly calculate the amount

You will need to buy the necessary materials with a small margin so that there is no need to run around the shops for the missing material. Moreover, wallpapers from different batches may differ in shades of colors, which will be noticeable in the pasted canvas.

Extra rolls also almost always do not find application, besides, modern high-quality wallpapers are also expensive. Throwing away a lot of money so that an extra couple of rolls then gather dust in the pantry is also not interesting.

Experts advise:

Use the services of an experienced upholsterer;
Use wallpaper calculator;
Calculate the amount of material on the old wallpaper.

For an experienced master, counting the number of wallpapers will not cause difficulties. But if you are new to wallpapering walls, you can use the services of a special construction calculator. Their developers offer to enter data on the size of the room and the width of the intended wallpaper, and you will be given the result by the number of rolls.

Consider at your own risk

It would be more correct to calculate on such a calculator, in the conditions of which the data on the number and area of windows and doors in the room to be glued, as well as the dimensions of the rolls that you are going to use, are laid down. In different rooms of the same perimeter there may be one window and one door, or maybe several, and three, and five. When calculating the dimensions of the surface to be glued, the area of windows and doors will need to be subtracted from the total area of \u200b\u200bthe room. Therefore, the calculation error that the calculator gives will be the smaller, the more parameters are included in the algorithm of its work.

What is a construction calculator

On the other hand, there is nothing difficult in how to calculate the correct number of wallpaper rolls without using a special one. To do this, you need to measure the perimeter of your room. If the room has a standard rectangular shape, you can measure two adjacent walls, add their measurements and multiply by two. This will be the perimeter of the room. If the room has a non-standard shape (in houses of individual construction or as a result of redevelopment, or for some other reason), and also if the room has ledges, niches or other non-standard elements, you will need to measure the length of each straight wall segment with a tape measure and add all scores.

It happens that because of the economy, some sections of the walls are supposed not to be pasted over with wallpaper. For example, if you have massive wardrobes or a furniture wall in your room that you cannot put in another way. If the rearrangement or replacement of furniture is not supposed to be done, then the dimensions of the wall behind the furniture will need to be subtracted from the calculations.

Important! Before buying the wallpaper you like, carefully study the information on the label, check the dimensions of the wallpaper (length and width), how to properly join the panels.

Material calculation specifics

The correct calculation of the required amount of materials depends on this. Then it is recommended to calculate how many whole canvases of wallpaper are obtained from one roll. To do this, you need to measure the height of the wall to the ceiling or to the level on the wall to which you plan to stick the wallpaper. If you have purchased or plan to purchase wallpaper without a pattern, then you will not need to make an adjustment for pattern alignment. In this case, it is necessary to divide the length of the roll by the length of one panel, which you determined when measuring the height of the wall to the ceiling, and calculate how many sheets will be obtained from the roll.

Calculation examples

With a ceiling height of up to 2.5 meters, four whole panels are obtained from one standard 10-meter roll (if there is no need to combine the pattern). In the case of buying wallpapers that require matching the canvases according to the pattern, it will be necessary to make an allowance for matching the pattern, see the calculation for such wallpapers below.

If the length of your panel (ceiling height) is higher than 2.5 m, only three whole panels will come out, but each roll will produce a large residue, almost in the panel, which can be used when pasting doorways and space under and above window openings. In this case, the perimeter of the doors and windows can be subtracted from the perimeter of the room, and only calculate how many long panels are required. The resulting perimeter of the walls is divided by the width of the roll, so you can calculate the number of long panels needed for pasting the walls. Then we multiply the required number of panels per room by the resulting number of whole canvases from one roll, the result will be equal to the required number of rolls.

For example, your room has a perimeter of 25 m, a roll width of 0.5 m. The total number of panels for pasting such a room is 25:0.5=50. With a ceiling height of up to 2.5 m, 4 canvases are obtained from a roll, the number of rolls 50: 4 \u003d 12.5 is rounded up to 13.

If during calculations you get a fractional value, then rounding must be done up. When calculating, do not forget that all values \u200b\u200bmust be in the same units of measurement. If you take the perimeter of the room in meters, then also use the width of the wallpaper roll in meters, and do not forget to convert the rest of the indicators into meters. Otherwise, you will not get a reliable result, how much material is needed.

Wallpaper without a pronounced pattern is the easiest to glue. Difficulties arise if the material has a large pattern, floral ornament or geometric pattern. In this case, you will have to take into account the displacement of the pattern on the canvases in order to correctly combine adjacent stripes.

Usually, the marking indicates the size of the rapport (through what distance the same pattern is repeated on the wallpaper), as well as what kind of joining of the wallpaper should be when gluing them.

There are such docking options:

Free docking;
Direct docking;
Offset docking;
Counter docking.

Free docking involves gluing the strips without adjusting the pattern, the strips can be cut from the roll of the desired size, without cutting anything to align the strips. In these wallpapers, the pattern does not have any clear repetition, and it is not required to select the pattern of adjacent canvases. In this case, it is easy to calculate how much material will be needed.

In straight-joint wallpaper sheets, there is no need to move the sheets to align the pattern. They indicate the size of the rapport, that is, the length of the repeating section of the pattern. It is only necessary to combine adjacent panels according to repeating rapports. For example, we have a ceiling height of 230 cm, wallpaper with a pattern with a repeat of 60 cm with a direct join. One wallpaper panel should have a size of 230 cm, that is, 230:60 \u003d 3.833 rapports, rounded up to 4 rapports so that the next canvas starts with a whole rapport. Thus, when sticking such wallpaper with a pattern, one strip will be 230 cm and 10 cm will have to be cut off each time for waste.

If the wallpaper you bought shows an offset joint, each subsequent strip must be shifted by the amount of offset indicated on the label. For example, the markings indicate the values \u200b\u200bof 60/30, that is, the rapport is 60 cm, the offset of the pattern is 30 cm. With the same dimensions of the ceiling height, we will have to cut off the wallpaper canvas with a size of four rapports and cut off another 30 cm to align the shifted pattern. Thus, one strip with cuts will come out 270 cm, and from one 10-meter roll of wallpaper you will get not four whole strips, as in wallpaper with a straight or free joint, but only three (10: 2.7 \u003d 3.7 strips) . If you do not observe the necessary offset, the wall will not get the correct pattern as a result of gluing all the strips.

There are also wallpaper canvases, in which each subsequent strip must be turned 180 0 in relation to the previous one, so that as a result the correct ornament is obtained on the wall. This is quite rare in wallpaper with a geometric pattern.

Important! When buying wallpaper, pay attention to the marking of the joining of the canvases indicated on the label. The correct calculation depends on this, how much wallpaper materials are required.

Conclusion

In order for the results of the repair to please you, take the time and effort and carefully approach the question of how much wallpaper will be needed for the repair. It is better to make several calculations using a calculator, a tape measure and a pen and paper, to resort to the help of store sellers, than to look for missing rolls or collect a canvas from all the remaining scraps and waste. If the calculations are made correctly, there will be neither excess material nor problems with its shortage.

The question - how to calculate how much wallpaper is needed per room - is not an easy one, because no one wants to overpay for the leftovers or, conversely, buy a few more rolls. And if the desired color is not left in the store, then the problem is - where to look for them now? In order not to complicate your life, before buying a wall covering, learn how to calculate the required number of wallpapers.

Advice! If before buying new wallpaper you have not yet removed the old ones from the walls, you can count how many old sheets are pasted on the wall. But when gluing a new coating, keep in mind that the width of the new ones must be equal to the width of the old ones, otherwise the advice does not work.

Preliminary measurements of the room

Measurement accuracy is the basis of any calculations. For all measurements and in order to calculate the amount of material per room correctly, you will need:

construction tape measure or measuring tape;
calculator;
paper and pen for recording results.

First, measure the length and width of the room, as well as the height of the ceiling. You should not take into account the level of the walls, and the dimensions of windows and doors must be measured separately - these data will be useful in the calculations. If the design provides for a wide ceiling baguette, a box or suspended ceilings, their width should be taken away.

Measure carefully:

protrusions;
niches;
space above doors and windows.

Advice! If the room has an uneven ceiling, it is recommended to measure the wall in the highest place.

Calculation of wallpaper around the perimeter of the room

One way to calculate the number of pieces of wallpaper is to calculate the perimeter of the space walls. In a similar way, you can calculate how much wallpaper you need to finish the ceiling.

Attention! For those who have forgotten the formula for calculating the perimeter: you need to add the length of one wall to the length of the adjacent wall, and multiply the result by two. Please use a calculator to avoid mistakes.

Gone are the days when all wallpapers had a standard width. Modern manufacturers offer a decorative coating of the following width:

When calculating, consider whether there is a pattern on the wallpaper or not. Wallpaper with a report (an element of a pattern that is repeated on the wallpaper) requires a margin for selection. If you chose with a large pattern, in the calculations you will have to add up to 0.7 m to the selection for each sheet. Before starting the calculations, measure how much the length of the report “takes” in your case. Plain coatings without a pattern do not require any supplies.

Important! If the design of the room provides for canvases of several types, first consider the gluing scheme, and only then calculate the quantity.

Let's start with the calculations. Necessary:

Attention! In order not to make a mistake down in the calculations, the numbers should be rounded up to a whole value, and up.

Calculation by room area

The above method has one drawback - the presence of windows and doors in the room is not taken into account, so you will still have extra materials. An alternative way is to calculate by the area of \u200b\u200bthe walls. For this you need:

To calculate the total area - multiply the length and height of the wall.
Calculate the area to be covered. First you need to calculate the area of window and door openings (multiplying their height and width). Further, from the total area of \u200b\u200bthe room (calculated in paragraph 1), subtract the total area of \u200b\u200bwindows and doors.
Count the number of rolls. Standard wallpaper 0.53x10 m can cover 5 square meters.
The final calculation of the number of rolls is the pasting area (number from point 2) divided by the area that can be pasted with one roll (for example, as in point 3).

Important! If you have chosen non-standard, for example, meter-long wallpaper, it is easy to find out the size of the surface that can be glued with one roll. To do this, multiply the width and length of the roll or carefully study the label, it may contain this information, which will save you from unnecessary manipulations with the calculation.

How to check your calculations

There are ready-made tables in which the number of standard rolls for rooms with typical dimensions has already been calculated. If you counted along the perimeter, check the resulting value:

take a look at the series. The numbers on all rolls must be the same, otherwise there may be a difference in color and brightness;
the material may be defective, so it is worth deploying and checking all rolls after purchase;
even in wallpaper with a small pattern there may be a report that is invisible at first glance;
you can reduce material consumption if you cut strips not from one roll, but from several at the same time;
walls above the door and window openings are recommended to be glued with leftovers and trimmings, but the image on the sides must match;
glue the inner corners, you need to start from a new piece;
glue the outer corner, overlap the wallpaper or just wrap the corner;
sometimes, to align the corner, you need a thin strip, the length of which is a whole sheet, take this fact into account when calculating the consumption of wallpaper.