Room perimeter calculator. How many wallpaper rolls do you need? The technology of applying liquid wallpaper

Wall-paper - convenient modern finishing material. It is especially in demand in the renovation of apartments, where the quality of the walls leaves much to be desired. This finish is usually made on rough plaster, which saves family budget. Work on their gluing - simple task which even a beginner can handle. But how to correctly calculate the number of wallpapers per room?

There are many calculators on the Internet that help you calculate the required number of wallpapers. However, these calculations should not be taken as a basis: the value errors may be large enough. This is due to the fact that three parameters are set - width height length rooms. At the same time, protrusions and niches are rarely taken into account.

Therefore, it is best to calculate it yourself using a calculator, armed with a plan of rooms. On the plan, it is also necessary to note the recesses in the wall, if they are also pasted over with the same material. When combining several types of material, a plan is drawn up where which section will be located, and the number of wallpapers for each of them is calculated.

room perimeter

First of all, find out perimeter rooms - add the length and width, multiply the sum by 2. Example: in a rectangular room with walls of 1.5 and 3.5 m, the perimeter is: (1.5+3.5)x2=10 m.

If there are niches and ledges in the room being repaired, increases are made. Then they think differently, since opposite walls can be of different lengths. In this case, each wall is measured separately, and then the resulting numbers are added up. It is necessary to take into account both protrusions and recesses.

The photo above shows several complex shapes - let it be a plan for non-standard rooms. The perimeter of each of them is found as follows:

• BUT: 4+3+4+3+(1+1)x4=22;
• AT: 6+2+6+8+16+4+4=46;
• With: 10+8+14+4+2+8+6+4=56.

How to find out how many canvases you need for gluing

Finding out how many canvases you need for gluing is easy. To do this, you need to look at the width of the roll on the label. Standard - 53 or 100 cm. Then the perimeter of the room is divided by this width. If the division gave a remainder, then increase this amount by one more.

For example, the perimeter of a room, as in the example above, is 22 m. Divide this number by 53 cm. The result of 41.5 is rounded up to 42 .

How many pieces can be obtained from a roll

To answer this question, you need to know the height of the walls. In most apartments of apartment buildings, it is 2.3 meters. But to know the exact figure, you need to take measurements in different places. The indicators may differ slightly, and sometimes the differences reach 5 cm. Take a large value as a basis.

Then the length of the roll is divided by the resulting figure. Yes, at height 2.3 m one roll can be divided into 4 parts, but if you don't need to customize the pattern. If the number turned out with a remainder, then rounding down is carried out. For example, ceiling height 3.2 m. If a 10 m Divide by 3.2 to get 3 with a remainder of 0.4. This means that three canvases will be obtained from one roll and there will be a waste of length 40 cm.

Attention! Do not throw away small pieces of wallpaper. They are used for small areas - for example, above windows.

Calculation of rolls for one room

To find out how much material needs to be purchased for one room, the number of paintings is divided by the number of full-fledged strips.

Table 1. Calculator of the number of wallpapers for rooms of different sizes with a roll.

Wallpapering on the ceiling

Often the design of the room involves wallpapering on the ceiling. This tradition is dying out. This is partly due to the fact that pasting vertical wall not very comfortable. Yes, and the possibility of flooding by neighbors from above is not ruled out, after which it will be necessary to make repairs. Therefore, suspended structures are becoming more and more popular, which perform not only a decorative function, but also help to hide communications. Often the floors are simply covered with white paint.

But if, nevertheless, there was a need to decorate the ceiling part of the room, then the material must also be calculated. First calculate the area of ​​the ceiling. For example, in a regular-shaped room with walls 4x5 cm area will be equal to 20 m2. Then find out the area of ​​the roll, multiplying the width by the length. So, the area of ​​the roll length 10 m and width 0.53 m will 5.3 m2. This means that 4 packs are required for the ceiling. If the ceiling has protrusions, then this area must also be taken into account. Calculate its dimensions in the same way, and add to the main result.

Prices for various types of suspended ceilings

Dropped ceilings

Window and door openings

However, professionals do not recommend being greedy. This difference will not give significant savings. However, some stock of material in any case does not hurt. Home craftsmen, especially beginners in repairs, often make mistakes. And, perhaps, this surplus will help to avoid buying an additional roll.

Furniture

Often, a room is furnished with massive headsets that are difficult to move, and a radical interior update is not expected in the near future. In such cases, from the total perimeter, it is worth subtracting the area of ​​\u200b\u200bthe wall occupied by an ordinary wardrobe, compartment or shelving.

But if in the room part of the wall is occupied by a small closet, which you also don’t want to move, then this area should still be included in the total footage. As in the case of windows and doors, this will be a safety stock in case of failure.

Attention! If the furniture hides only part of the wall and does not reach the ceiling, then it is necessary to calculate the length of the segments that need to be glued on top. They must be such that at least 10 cm go behind the back wall of the cabinet.

The secrets of fitting the pattern on the wallpaper to save material

Almost always wallpaper comes with a pattern. If you don't want to mess around with the docking, it's better to choose a material with a loose fit. This means that the pattern on the panels is completely absent or does not need to be customized. Examples of this design are stripes, small peas, flowers, dots, etc.

There are such concepts as direct and offset fitting, in which the material consumption increases slightly.

A straight fit is a precise alignment with the pattern of the previous pasted strip. In order for the ornament to match, each next strip is moved towards the ceiling until the elements on the seam form a complete picture of the ornament. The height of the repeating part (it is called rapport) is indicated on the label.

Another way to fit is offset. This method is used for large images on the finishing material. Such wallpapers are the least convenient, since their use is fraught with high consumption. After all, in order for the wall to look neat and aesthetically pleasing, each next canvas is cut out so that it turns out to be half a report longer than the previous one. On the label, the manufacturer reports the largest waste from the piece. This information is given as a fractional number - for example, 64/32 . This means that the value of the rapport 64 cm, and the travel length - 32 cm.

Attention! Before buying, you must study all the relevant signs on the packaging with the product.

How to calculate the wallpaper, if you need to fit the picture

Wallpaper with a complex pattern must be customized. Therefore, the calculation of such a finish is more difficult. In addition to linear measurements, the rapport height is taken into account. Calculations are carried out in the following sequence:

1. Measure height one lane. This indicator is multiplied by the height of the rapport, and the resulting number is divided by the length of the roll. The number is rounded down to the smallest integer.
2. Calculate number of rolls according to the method described above.

Attention! Be sure to take into account the rapport when gluing a finishing coating with a complex pattern. If this is not done, then at the end of the work it may turn out that you will have to buy 2-3 more rolls.

Another way to save on material is to glue the canvases not to the very ceiling, but indented 20-25 cm. This technique is effective in rooms with high walls, as it visually makes them a little lower. But for squat rooms, it is not suitable.

Video - Subtleties of wallpapering

How to save on wallpaper

One way to spend less wallpaper -use a large picture on only one wall. The rest can be painted or glued with plain materials. Another way - alternating zero offset canvases with bright, large prints.

And this is a real find for those who love drawings on the walls, especially large ones. To get the minimum amount of waste, you need to cut wallpaper from two or three rolls at once. That is, the first strip is taken from one, the second from the other, then the third roll is alternated or opened. Savings will be due to the fact that the pattern in the wallpaper is shifted during production. Therefore, using several streams at once, it is possible to reduce waste.

How to calculate the amount of liquid wallpaper

The material, which is also called silk plaster. It is based on cellulose, natural polymers. They combine the properties of three types of finishes at once - decorative plaster, roll wallpaper, coatings. Unlike decorative plaster, the mixture does not contain sand and cement.

• cotton;
• silk;
• cellulose;
• silk-cellulose.

Reference! Silk-based products are considered the most durable, cotton-based products are the cheapest and last the least.

For independent use without the involvement of specialists, silk plaster is already tinted. There is also a category of products for professional use. It is a separate component that must be diluted and painted before finishing the wall.

Quantity calculation liquid wallpaper also depends on the size of the room. Therefore, before starting, it is necessary to make measurements, as described above.

Attention! The amount depends on the composition of the finishing material itself. So, the finer the fibers, the less material would need.

Consumption depends on how well the mixture is prepared, and on compliance with the application technology. One package is enough for 3-7 m2 surfaces. Consumption is indicated on the manufacturer's label.

Step-by-step instructions for preparing liquid wallpaper

Step 1. Water at room temperature is poured into the container - clean, without impurities. The amount of water per 1 package must be specified on the package, for different products the amount is different.

Step 2 Glitter is poured into the water (if it is used, it is usually purchased separately). Then shake the package with wallpaper and the contents are also poured into a container.

Step 3 The mixture is thoroughly mixed by hand, passing between the fingers. This will help to avoid the formation of lumps of glue and its dissolution.

Step 4 Withstand mixture 12 hours, and mix again.

Rules for mixing liquid wallpaper

Each package is mixed with water separately, regardless of how much mixture is required to finish the wall. Immediately prepare as many packages as needed to work with the wall from corner to corner.

You can not use only half of the package. The fact is that the dry components are distributed unevenly throughout the package. Therefore, it may turn out that there will be more glue on the bottom, less fibers, or vice versa. When the mixture is diluted, the glue will not be enough, and the wallpaper will not meet the characteristics stated by the manufacturer.

Prices for various types of liquid wallpaper

Liquid wallpaper

Video - Restoration of liquid wallpaper

At the same time, if there was a lot of wallpaper, they can be dried and then reused. When mixing some types of silk plaster, it is necessary to use a drill with a mixing attachment.

The technology of applying liquid wallpaper

The mixture is applied with a plastic float or trowel. They take small portions, the grater is applied to the wall at an angle 15°. Depending on the type of wallpaper, the thickness of the applied layer should be up to 2 mm.

Apply the resulting mass with a special gun. It allows you to save up to 40% finishing material. The design of the device provides for a lot into which the mixture is loaded. Under pressure, the material is sprayed onto the surface of the wall.

Reference! As you know, ordinary roll wallpaper during the drying period is afraid of drafts. However, when working with silk plaster, on the contrary, it is recommended to ventilate the room for the fastest drying of the finish.

Wall mural

The easiest way to buy wallpaper. Usually they are selected according to the size of the wall, which is going to be decorated in this way. However, it is important to note that some coatings are used not on one, but on two adjacent walls. Therefore, so that part of the drawing is not lost, it is necessary to carefully consider in which part of the room it will be used.

Attention! If ordinary wallpapers are also used, then you need to know the size of the former so that you can save on the latter.

In the form of photo wallpapers are:

• horizontal;
• vertical;
• square.

The canvas is often made up of several elements, the number of which can reach 20 or more.

If it turned out that the canvas is too large, then it is easy to cut it. But with a lack of width or height, empty sections of the wall can be filled with the main finishing material.

Prices for various types of photo wallpapers

Photo wallpaper

How many wallpapers to buy

Even if the number of wallpapers is calculated correctly, you need to buy at least one more roll in reserve. This is necessary for several reasons.

It is not always possible to stick a strip on the first try. The material may be damaged or soiled during operation. In addition, there may be a defect on the canvas that is not visible upon purchase, since the ribbons are rolled up and sealed in a film.

Many manufacturers produce limited collections, so in a year you will not be able to buy the same design. But even if the design is preserved, the shade of the dyes may differ slightly, and this will be noticeable on the wall.

As for liquid wallpaper, their consumption may increase due to uneven walls. Therefore, add to the total volume up to 20% from the base calculation.

Have you finally decided to re-paste the wallpaper in your room? It's time for old wallpaper to retire and you are wondering how to calculate the number, how many rolls do you need? Answer next...
The most common wallpaper size is a 10 meter roll half a meter wide 10 m x 0.53 m. It is enough for pasting about 5 square meters walls and or ceiling. There are wallpaper rolls with a length of 15*0.53 m, 10*1.06 and 25*1.06 m.

Wallpaper calculation

1. first measure the perimeter of your room. Do not forget to remove from the result the perimeter of the surface that is not subject to pasting, these are windows and doors, (6.5 + 4) x 2 \u003d 21 m.

1. And then, divide the resulting number by the width of the roll (usually 50 cm). The resulting figure shows the number of stripes, 21 / 0.53 = 40 stripes.

1. Measure the height of your walls (don't forget to add a little margin for later trimming, say 5 cm) 2.50 + 0.05 = 2.55 m

1. Then count the number of strips per roll, 10/2.55 = 3

1. Now divide the number of strips by the number of strips per roll to determine the number of rolls, 40/3=14 rolls

Special cases

If there are ledges or recesses in the niches of the doors, then add 1-2 additional rolls of wallpaper.

If you are using wallpaper with patterns, you need to add a margin to the height calculation to fit the pattern: 2.50 + 0.05 (cut off excess) + 0.30 (fit the pattern) \u003d 2.95 m.

Ceiling calculation

The ceiling is the same. Recently, however, pasting the ceiling with wallpaper does not look elegant. Today, a lot of embossed ceiling tiles have appeared that look more organic and aesthetically pleasing.

Don't forget to buy one or two extra rolls of wallpaper. Especially if the connections go in a checkerboard pattern, just for your mistakes, the offset is higher and lower.
- Be sure to pay attention to the wallpaper series number. If the series are different, then the difference in color and brightness will be noticeable after pasting.

How to save?

If you made a mistake in the calculation, and it is no longer possible to purchase such wallpapers, then you can purchase similar ones. And decorate some of the walls with other wallpaper. In fact, this option looks very modern and non-standard. In this case, the view zones will change, that is, from different parts rooms, her appearance will be different, which will also have a pleasant effect on her perception.
Option with no pasting behind the sofa and wardrobe for an amateur.

calculator to help you

If you are not sure about the calculations, you can also use the ready-made table to determine the number of wallpaper rolls:

Use the following table to calculate the wallpaper:

Roll size 0.53 / 10.05 m = 5.33 m2

Roll size 0.53 / 15m = 7.95m2

Roll size 1.06m /10.05m = 10.65 m2

Roll size 1.06 / 25m = 26.50m2

From the size of the room (more on that below) and from the design. One roll is usually 10 meters. If the wallpaper is plain and the ceiling height is 2.5 meters, you can cut the roll into four strips. If the pattern has to be customized, there will be three stripes.

No alignment of the pattern: the roll is simply cut into the desired number of panels. Usually it is plain wallpaper, wallpaper with an abstract pattern or vertical stripes.

The pattern will have to be aligned horizontally so that adjacent stripes start with the same elements. And here everything will depend on the height of the rapport - the distance through which the pattern repeats (indicated on the label). In the worst case, you will have to throw out almost the entire height of the rapport, so when calculating it, you need to add it to the height of the ceiling.

The pattern is located diagonally, so each canvas is shifted. As a rule, half rapport. In this case, the height of the rapport and the amount of offset must be added to the height of the ceiling: you will find both numbers on the label.

How to calculate the number of wallpapers using tables

This is ideal if the room is square or if the wallpaper does not need to be adjusted. You only need the area of ​​\u200b\u200bthe room and the height of the ceiling.

Quantity calculation narrow wallpaper(width - 53 cm, length - 10 meters).

Quantity calculation wide wallpapers(width - 106 cm, length - 10 meters).

How to calculate the number of wallpapers mathematically

If the room has complex shape, there are bends and niches, it is better to count along the perimeter. To do this, add the lengths of all the walls. Window and doorways less than 60 cm wide are equated to a flat wall, wider ones are excluded from. The resulting value is rounded up.

Example: 2.75 m + 3 m + 0.4 m + 2.85 m + 4 m + 0.65 m = 13.65 m ≈ 14 m.

Then you need to determine the number of strips: divide the perimeter by the width of the roll. Let's go back to our example: 14 m / 1.06 m = 13.2. Rounding up - 14 canvases of wide wallpaper. For narrow wallpapers: 14 m / 0.53 m = 26.4. That is 27 bands.

Now you need to determine how many strips can be obtained from one roll: the length of the roll must be divided by the length of the strip. And there can be three options:

1. If the wallpaper does not require adjustment, the length of the strip is equal to the height of the ceiling. 10 m / 2.75 = 3.6 ≈ 3.
2. If the wallpaper is with a straight joint, the length of the strip is equal to the sum of the ceiling height and the rapport height (0.6 m). 10 m / (2.75 + 0.6) = 2.9 ≈ 2.
3. If the wallpaper is with a combined joint, the length of the strip is equal to the sum of the ceiling height, the repeat height (0.6 m) and the offset value (0.3 m). 10 m / (2.75 + 0.6 + 0.3) = 2.7 ≈ 2.

The last step: we divide the number of strips we need by the number of strips in the roll. If the wallpaper is wide, 14 should be divided by 3 or 2. If narrow, divided by 3 or 2 will need 27 stripes.

How to calculate the number of wallpapers using services and applications

Most fast way, if you know the parameters of the room, and the easiest, if you are not friends with mathematics. There are plenty of wallpaper calculators on the web, here are just a few good ones.

• Wallpaper calculator from calc.by. It counts both by area and perimeter, allows you to exclude door and window openings from the calculation. You can also set the width and footage of the roll.
• Wallpaper calculator from calc.ru. Calculates the perimeter. Helps determine how much wallpaper and glue is needed.
• Wallpaper calculator from remont-online.com. First, the configuration of the room is selected, then the width of the walls and wallpaper is driven in. You can also specify the price per roll to find out the final cost of pasting.

If you are already in the store, use the application for calculations. Here are two free ones with a good rating. non-food products of good quality, not subject to return or exchange, there are Decoration Materials. But we are talking only about goods sold by the meter.

In other words, if you don't like the wallpaper, you can take it back to the store. All rolls. In this case, the seller will offer you a similar product, and if there is none, you can write a request for a refund.

It will be problematic to return one or two extra rolls after. But large stores usually go to meet customers. After all, they buy wallpapers in large quantities, and plus or minus one roll does not particularly affect the sale. Customer loyalty is more valuable.

Just in case, check the terms of the return before buying.

Wallpaper Calculator allows you to calculate the amount of wallpaper when finishing the entire room as a whole and certain walls separately, which can be useful in non-standard rooms with 5 or more walls or in cases where you plan to use different types textures. The program allows you to take into account the repetition of the pattern (rapport), side overlay, the presence of door and window openings, correctly calculating the surface area of ​​the application, which in turn allows you to optimize the consumption of wallpaper and wallpaper glue, as well as eliminate overpayment for unnecessary materials.

In the application, you can get acquainted with the normative values ​​\u200b\u200bof glue consumption - you can immediately “estimate” how much wallpaper glue is required.

Calculation principle

There are two fundamentally different calculations of wallpaper per room - by area and by turning the roll onto the wall. The disadvantage of the first method is that the wallpaper area is calculated as one continuous roll, i.e. when pasting, the roll may end in the middle of the wall and, accordingly, a seam will appear. The second method implies that if the remaining length of the roll is less than the height of the ceiling, a new roll is taken, and the remains of the old one are used for smaller elements, for example, under a window.

The wallpaper calculator uses last option, since it is the most rational, although it slightly increases consumption.

A little more detail should be given to the calculation method itself. For example, the simplest case is when the wall of the room from top to bottom is a solid surface (1). In fact, we kind of roll out roll after roll along the height of the wall. Another option is when the opening completely (2) or partially (3) overlaps the roll. In the first case, a whole rapport is added to the segment, and in the second, a whole strip is taken, but the pasting area decreases accordingly.

Instruction

For the first option:

• ceiling height, m;
• width and length of the room, m;

For the second option:

• ceiling height, m;
• wall length, m;
• number of walls, pcs.

As an additional condition, you can use the "Windows" and "Doors" blocks. With their help, when calculating the wallpaper, the areas that will be occupied by the corresponding structures are taken into account and / or excluded.

The tool calculates wallpapers equally correctly in situations where canvas in whole or in part enters the opening.

Also, if you have other places that are not supposed to have wallpaper, for example, interior window between the living room and kitchen or furniture set, allowed use of the fields "Windows", "Doors" and for these purposes.

Then you need to fill in the characteristics related directly to the wallpaper:

• roll width, cm;
• roll length, m;
• rapport (repetition of drawing), cm;
• margin for leveling, cm;
• overlay on the side, cm;
• whether to move the drawing;
• Cost, rub.

Let's take a look at some of the steps in more detail.

rapport- this is a repeating part of the pattern, or otherwise, a parameter that shows the cyclical repetition of the pattern in height and / or width. The value is indicated directly on the roll and is measured in centimeters. If you have wallpaper without a picture, then enter "0" in the field.

Margin for leveling(cutting)- additional value for each sweep of the web for cutting in case of horizontal unevenness of ceilings / floors. The optimal value is 5-15 cm.

Side overlay- means partial overlapping of one roll with another, the so-called "overlapping" pasting technology.

Move drawing- pattern shift by 0.5 rapport. In fact, it leads to an increase in wallpaper consumption.

Use the convenient website wallpaper calculator and you will no longer have questions - how to calculate the number of wallpapers per room?

Table for calculating wallpaper by room area

In some cases, when calculating wallpaper for a room, it is more convenient for the user to use normative tables to obtain an approximate result. We offer you an option that involves the calculation through the area and height of the room.

Wallpaper with a roll width of 53 cm and a length of 10 m (standard)

Wallpaper with a roll width of 70 cm and a length of 10 m (European)

Wallpaper with a roll width of 106 cm and a length of 10 m (meter)

Wallpaper glue consumption table

Unfortunately, our online calculator currently only shows the area that will need to be treated with glue, but does not provide actual consumption data. For the convenience of visitors, we have collected reference data of the most popular types of products on the market and combined them into a table so that you can immediately "estimate" how much wallpaper glue you need.

Specify the required dimensions in meters.

Room dimensions:

Y– The length of the first side of the room to be wallpapered.

X- The length of the second side of the room for gluing.

H- Room height.

P– Perimeter (the sum of the lengths of all sides). To calculate the value of the perimeter of a room, add the length of all its walls.

D– Distance from the beginning of gluing to the first corner. Meaning D measured from the beginning of gluing to the first corner (clockwise), it cannot be equal to or greater than the length of the wall.

To carry out the calculation, you can set either the length of the walls of the room or its perimeter (in the second case, the option to start gluing will not be available).

If the room has a rectangular or square shape, enter the parameters Y, X,H. For rooms of irregular shape with ledges and niches, it is possible to calculate by specifying the values H and P.

Window:

If the room has a window opening, press "Add window" and enter its dimensions: length WX and height WY.

WZ– The distance from the beginning of wallpapering determines the location of the window in the room. Enter the distance from the starting point of pasting to the window.

The number of added windows is not limited.

Doors:

In order for the program to take into account the presence of a doorway in the calculation, you must click "Add doors" and enter their lengths DX and height DY.

DZ– Distance from the beginning of wallpapering to the doors.

It is possible to add multiple doors.

Wallpaper:

L– The length of a roll of wallpaper depends on the type and manufacturer. Standard value L 10.05 m. However, non-woven wallpaper for painting can be produced in rolls of 30 and 50 meters.

W– The width of the roll is determined by the features production line and can be 0.53 m (standard), 0.7 m and 1.06 m.

R- Repeating a drawing, or the so-called. rapport is the distance over which the same pattern repeats.

Z- Margin for leveling, the amount of allowance at the floor and ceiling, which, after gluing, must be cut off with a sharp knife to fit the ruler or rule (0.05-0.15 m).

F- Move picture. Check this box if you want to calculate based on the wallpaper repeat shift for matching.

If you want to print the visualization, check the box " Black and white drawing”, so you get a drawing that is close to the requirements of GOST and save color ink or toner when printing.

Important! If incorrect parameters are entered, to continue the calculation, you will be prompted to pay attention to the corresponding parameter and make changes.

The calculator will help you calculate the total area of ​​​​the walls of the room (in m²), calculate the consumption of wallpaper, taking into account windows and doors. You will know the area of ​​one roll of wallpaper, the length of the sheets required for pasting a room of a specified height, taking into account trimming allowances, as well as the number of whole sheets of wallpaper contained in the roll. What will be the remainder of each roll and how many rolls (pieces) of a given length are needed to paste over the room. The calculator will calculate how much wallpaper is needed for the room and how many rolls will be needed, taking into account the presence of window and doorways. The total balance of all wallpapers will also be calculated.

Such data allows you to buy the right amount of wallpaper for the room, taking into account the nuances and sticking the room with your own hands or hiring professionals. It is advisable to have a stock of one roll in excess of the calculated quantity, this will save time and money in the future, in case of improper cutting or damage.

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