Calculate the number of wallpapers, necessary for pasting a room, is much simpler 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 a wallpaper calculator.
How to calculate the amount of wallpaper for a room: step-by-step instructions.
What determines the consumption of wallpaper? There are three main factors that determine number of wallpaper rolls required for gluing the walls in the room:
- Size and shape of the room. Everything is clear with this: without at least knowing the length, width and height of the walls of the room that is planned to be covered with wallpaper, it will not be possible to make any calculations.
- The width and length of the roll of selected wallpaper. Most often, wallpaper comes in two types - 0.53 m and 1.06 m wide. The length of 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 store to buy wallpaper, you should take a calculator with you so that you can recalculate if necessary.
- The size and complexity of the pattern on the selected wallpaper. Thus, wallpaper with a large or intricate pattern requires combining the pattern, 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 joining, 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 you start making calculations, you need to measure the room (preferably taking into account doors, windows, niches, bay windows and other convex-concave parts), choose the wallpaper you like and find out their exact dimensions by studying the label or information provided on the manufacturer’s website.
To measure a room, you will need a long and flexible tape measure, an assistant to hold the other 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 the perpendicular wall - the width. And the last measurement is 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, placing a tape measure along all its recesses and protrusions.
Separately, you need to measure the width and height of the window and door, so that you can then subtract their area from the total number of wallpaper panels.
All values obtained as a result of measurements must be written down - they will be needed for further calculations number of wallpapers per room.
Study information about the selected wallpaper.
The easiest way to get the necessary information about the roll size of the selected wallpaper is on the website of the seller or manufacturer. If you couldn’t find the wallpaper you liked from home, you’ll have to go to the store and study the label on the spot.
The wallpaper label indicates 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 the ones needed to calculate the amount of wallpaper. The type of wallpaper will help you choose the right wallpaper glue, and the same lot number will ensure that the wallpaper rolls will 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 (sum of the lengths of its walls).
If the room has complex shape, then the perimeter is calculated as follows:
- Length of the first wall + Length of the second wall + Length of the third wall + Length of the fourth wall = Perimeter of the room (sum of the lengths of its walls)
The resulting value should be written down, and if it turns 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 a whole number = 18 m. This is the perimeter of the room, which is needed for further calculations.
Next step - calculation of the number of wallpaper panels to cover the walls of the room. To do this, you will need the perimeter of the room and the width of the wallpaper roll. This data must be substituted into the formula:
- Perimeter of the room ÷ Width of the wallpaper roll = Number of panels of wallpaper.
Example: 18 m (perimeter of the room) ÷ 1.06 m (width of the selected wallpaper roll) = 16.981.
The number of panels cannot be a fractional number, which means it must be rounded to the nearest whole number = 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 smooth, and the difference in heights can reach that same 10-15 cm.
Example: 17 (number of panels) × 3 (wall height = 2.75 m + 15 cm) ÷ 10 m (length of wallpaper) = 5.1 (number of rolls).
Calculation of the amount of wallpaper around the perimeter of the room.
In principle, five rolls of wallpaper should be enough, especially if you subtract from them the area of the door and window openings, and for gluing the surfaces around them use leftover wallpaper. However experienced craftsmen It is advised to always round up and buy wallpaper with a reserve. 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 some of the rolls may be defective or the wallpaper will wear out or get dirty during use. Having a supply of wallpaper, it is easy to correct such defects without re-pasting the entire room.
Skill count the number of wallpapers- a useful skill that will save both energy and family budget, especially since it is not at all difficult to cope with this task.
Calculation of the amount of wallpaper per room by area, tables.
Before you go buy rolls of wallpaper for the wall or ceiling, you need to find out the required number of rolls of this very wallpaper. And to find out the quantity, you, in turn, need to know the footage of the room - one of the most important parameters, combining in area all surfaces to be pasted, with the exception of window and doorways. Correct calculation of this indicator, using tables, formulas and special online programs, and is the main topic of our conversation.
Calculation of the amount of wallpaper for standard gluing
It is quite easy to accurately calculate the need for the number of rolls for pasting a room under renovation if you use the following diagram. First, we determine how many panels of the length you need are contained in one roll. If the wallpaper contains a large pattern, then its consumption should be taken in reserve, since you will be wasting the material on joining the picture. For liquid wallpaper, as you understand, the formula is completely different. Having calculated the number of panels, you will only have to divide the perimeter of the room by this indicator.
Calculation example
Let's say the ceiling height in the room is 2.5 meters. We take wallpaper without a pattern. Standard roll European wallpaper has a length and width of 10.05 * 0.53 meters, respectively. That is, we divide the length of the wallpaper by the height of the ceiling and get 4 panels. Next, knowing the width of the wallpaper roll, you can decide how many panels you will need. To do this, we multiply the number of panels in a roll by the width of the roll - 4 * 0.53 = 2.12 meters of wall will be covered with panels of one roll. Having found out the perimeter of the room, excluding doors and windows, divide the figure by 2.12 m to find out how many rolls you will need. As you can see, there is nothing complicated in the calculation. Along with the amount of wallpaper, you can calculate the amount of glue and the cost of the entire repair, although I recommend taking everything with a small margin, just in case.
Next, I give an example of a table with which you can calculate the wallpaper for a room, focusing on its perimeter and ceiling height. See table:
I note that if the ceiling height is 2.5 meters, then there will be a little excess left from the roll. Even if you take this most extra from all the rolls you use, you still won’t have enough to hang wallpaper above the doors, above and below the window openings. If the ceiling height is more than 2.5 meters, then, as practice shows, much more excess remains, as a result of which there is no need to buy an additional roll.
Comment
When making calculations, be aware of differences in color and texture different wallpapers. Wallpaper with a pattern has rapport. This is the name given to a certain distance maintained between individual decorative elements. If you have chosen wallpaper with a large pattern, you will need to additionally calculate the number of such repeats per length, which will automatically force you to purchase a larger number of wallpaper rolls than in the case of a regular pattern size.
Calculation of wallpaper according to the “wallpaper + border” scheme
IN modern interiors The most popular schemes for pasting walls are in which, in addition to using wallpaper, borders are also glued. Manufacturers even produce special kits in which the wallpaper fits perfectly under borders. This allows you to select compositions without fear of encountering incompatibility different elements. It also opens up opportunities to combine plain wallpaper at the bottom with patterned or patterned wallpaper at the top. The curb will be used as a dividing strip.
Calculation example
As a rule, pasting a room with a border is carried out in a ratio of one to three. That is, one part lower into two parts upper. The calculation is also carried out along the perimeter of the room. If we take the standard ceiling height at 2.68 meters, the bottom layer will be located at a height of one meter from the floor. Upper layer it will have a length of 1.68 meters. We take a 10-meter roll of wallpaper, from which we will get 10 panels for the lower part. For the top of the roll there will be enough for 5 panels plus the remainder. As you already understood, I simply divided 10 meters by the length of the part.
If you find it difficult to calculate the perimeter of a room, I recommend using the following formula. Add the width and length, multiply the result by two, then subtract the width of the windows and doors. For example, if a room is 4 meters wide and 6 meters long, then the perimeter minus doors and windows (0.9 and 1.5 meters respectively) will be (6 + 4) * 2 - (1.5 + 0.9 ) = 17.6 meters. If such calculations are problematic for you, I recommend using online calculator wallpaper calculation, which you will find without much difficulty.
Calculation of the lower part. We take a standard 10-meter roll, which, as we have already found out, for the lower part is divided into 10 strips, 0.53 meters wide. Thus, with one roll we can cover the lower part of 5.3 meters of room area. By dividing the perimeter of the room by this indicator, we find out that for the lower part of the room we will need at least 3 rolls, without the presence of a large pattern.
Calculation for the upper part. A standard 10-meter roll contains 5 strips for the top, each of which is 53 centimeters wide. Thus, one roll will help cover 2.6 meters of area with wallpaper. We divide the perimeter of the room by this indicator and find out that for the top we have 7 rolls to spare.
Curb calculation. The required number of rolls will be determined by the length of the border roll. For example, if the length of the roll is 5 meters, then we divide 17.6 by 5 and get approximately 4 rolls for our room. If the roll is ten meters long, then the number of rolls is reduced to two.
Remember that for wallpaper with repeat, the number of rolls must be increased, since repeat was not taken into account in our calculation.
Calculation of wallpaper for painting
It has been noticed that the wallpaper for painting has a completely different footage. Yes, you can find a 10.05*0.53 meter option. But no one is immune from the options 17*0.56, 17*0.53, 33.5*0.53 and even 125*0.75. For such wallpapers there is another table, which I provide below. See table:
Range finishing materials constantly updated with new developments based on the most advanced achievements modern technologies. Accordingly, the fashion for decorating residential premises in one style or another fluctuates. However, despite all this, wallpapering walls still remains one of the most popular types finishing, and is not going to “give up its position” yet.
Paper can act as a base substrate for other types of wallpaper, for example, with a vinyl or textile outer finishing layer.
- Instead of paper, paper is increasingly being used in wallpaper production. interlining. This table material is also environmentally friendly, as it is made from the same cellulose natural fibers, but using a completely different processing technology.
The result is a non-woven fabric, which compares favorably with paper in its resistance to soaking and higher strength characteristics.
As a result, non-woven wallpapers are the most convenient for self-pasting - even under the influence of a damp adhesive environment, they do not lose their “geometry” and do not spread. That is why non-woven fabric is increasingly used as a base for other types of wallpaper.
Non-woven fabric is also used in " pure form“- paint also adheres well to it and embossing is done. Perhaps the variety of patterns and richness of shades is not as high as that of paper wallpaper, but still the range is wide, and there is plenty to choose from.
There is one more important nuance– non-woven fabric, as can be seen in the illustration, has a translucent structure. Sometimes the effect of “punching through” the wall color through the pasted wallpaper is possible, especially if light shades of design are chosen. This leaves a certain imprint on the need for more thorough preparation of the surface for gluing, preferably in a single color. However, sometimes this phenomenon is even used for “useful purposes” - on the wall in advance the right areas a certain toning is given, which will shine through the glued finish - as intended by the designer.
So, non-woven wallpaper is practically in no way inferior to paper wallpaper, and in many respects it is superior to it. The only drawback is that it is more high price such finishing material.
- They have the highest levels of surface resistance to moisture and abrasive effects, and to fading under the influence of ultraviolet rays. They are perfect for rooms where the specifics of its use require frequent maintenance of the wall surface (kitchen, hallway), or where constant maintenance is required. high level humidity.
To be absolutely precise, only the outer layer of such wallpaper is vinyl (polyvinyl chloride). The inner backing, which is responsible for gluing the canvases to the wall, is either paper or non-woven fabric.
External polymer coating(PVC) has good performance hydrophobicity, lends itself perfectly to applying embossed patterns. Special indelible paints of the brightest shades, which are not afraid of abrasive effects, fit perfectly on it, and the range of vinyl wallpaper is extremely wide.
The disadvantage of vinyl wallpaper is insufficient vapor permeability, that is, it is difficult for walls covered with such a finish to “breathe,” which can spoil the microclimate in the room. Therefore, such wallpaper is not recommended for children's rooms or bedrooms. People with a sensitive sense of smell may be bothered by the slight characteristic “aroma” of PVC, which can linger for quite a long time.
Another “minus” is the high density and mass of such canvases, and for finishing only those specially designed for PVC wallpaper should be used. Dealing with vinyl wallpaper without the appropriate experience is much more difficult than dealing with paper wallpaper, and even more so with non-woven wallpaper.
On sale you can also find other types of wallpaper for walls, made from materials that are quite non-standard in the usual presentation. Thus, textile trellises are gaining popularity (by the way, they were once the “ancestors” of landmarks modern types wallpaper), fiberglass, metallized, cork, bamboo, coconut fiber and some others. But since this publication is aimed, however, to a greater extent at people who are taking up the task for the first time self-repair, we will not dwell on these “exotic” options. Taking on the task of gluing such an unusual finish without experience is an obviously losing undertaking that will almost certainly end in failure with the loss of considerable funds.
How to approach the problem of choosing the most optimal wallpaper? Of course, treat them as materials decorative finishing First of all, there are external design requirements. There is no point in dwelling on this aspect in this publication - we have slightly different goals, especially since such issues have already been given a lot of space on the pages of the portal.
What rules are followed when selecting wallpaper by color and pattern?
It is clear that the decisive argument has always been and remains the preference of homeowners. However, you should listen to some recommendations. So, for example, there are certain canons. Moreover, they often resort to complex ones.
In this case, we are more concerned with the performance qualities of the finishing material.
- For rooms constantly flooded street light, you should choose wallpaper that has increased resistance to fading, otherwise you will have to update the finish too often. And the greater the probability of hitting the walls sun rays, the higher the stability indicator should be.
- It has already been mentioned that heavy materials are undesirable for residential premises. vinyl wallpapers, no matter how attractive their design may seem. Here, when choosing, the emphasis should still be placed on environmental friendliness and the ability of the material to maintain an optimal balance of temperature and humidity in the room, without the likelihood of condensation appearing on the walls. At the same time, wallpaper in bedrooms should not attract dust, otherwise allergic reactions cannot be ruled out.
- For the kitchen, vinyl wallpaper will be just right - the inevitable fumes and their settling on the walls require private cleaning. And PVC in this case is even especially good in that moisture is absorbed into its surface very weakly - indelible stains can be avoided.
- For bathrooms optimal choice will be a material with pronounced hydrophobic properties - high-quality vinyl wallpaper on a non-woven backing is suitable.
- For narrow or cramped rooms with increased intensity of human traffic (, vestibule, etc.), the qualities of wear resistance, that is, resistance to external abrasive influences, are primarily important.
You must definitely ask the seller in the store about all the qualities of the wallpaper you are purchasing. But relying only on such consultation is not entirely reasonable, and you need to be able to identify necessary information, studying the factory packaging of the product.
What can a wallpaper packaging label tell you?
Each roll of wallpaper is accompanied by a product label, which contains a lot of information useful for the buyer - you just need to be able to read it correctly.
Non-woven wallpaper
- First of all, this is the article number of a specific type (model) of wallpaper (item 1). It happens that there are wallpapers that are very similar in design, and when shipping a packaged product, it’s not surprising to make a mistake and get a roll that, in fact, will differ from all the others in its design.
- The article number is not everything. Wallpaper is produced in batches, and each of them corresponds to one filling of the production line with colorful compositions. Naturally, manufacturers adhere to a single technology when producing their products, but still, even small differences in the composition of the paint used can significantly affect the appearance of the finish.
The catch is that it is almost impossible to detect such a difference in a store, and the effect of “uneven striping” appears after gluing it to the walls. Therefore, when choosing a product of the same article, do not forget to check that the batch is completely identical - then all rolls are guaranteed to fit one another. A batch is usually indicated by a group of numbers. On labels of imported wallpaper, this indicator is often referred to by another term: “Batch number” (item 2).
- Pay attention to the size of the wallpaper. Not all rolls are created equal and this is something to keep in mind. There are several standards that can be found in the modern assortment of stores.
— The most common are rolls 10.05 meters long and 0.53 meters wide.
— Wider versions are increasingly being produced - the same length, but twice as wide - 1.06 meters. Pasting walls with their help, with experience, is significantly accelerated.
- Less often, but still, you can find wallpaper of the same width (0.53 and 1.06 m), but already 15, 20 and even 25 meters long.
— Some foreign manufacturers adhere to their own standards, and their products may have completely different widths. There is quite a wide variety possible, but wallpaper with a width of 0.7 m is more often supplied to our market. The width can even reach 1.5 m, but this is already enough a rare event, and high-quality gluing of such huge canvases requires remarkable skill.
Please note that the size often indicates a possible error. That is, if a roll “back to back” is designed for, say, 4 sheets, then an unpleasant surprise is quite possible when the last piece suddenly turns out to be shorter than the rest (item 3).
The label may contain text information - it can be easy to understand even without knowledge of the language (pos. 4).
Finally, the label contains several pictograms that talk about the features of this type of wallpaper (item 5) and the rules for adjusting the pattern (item 6). These icons are standard, independent of the country of manufacture and the language of the text on the label, so deciphering them is not difficult. The pictograms can be divided into several groups, and their meanings are given in the table below:
| Pictogram | Decoding the meaning of the pictogram |
|---|---|
| Icons that talk about performance qualities wallpaper | |
| Wallpaper is not highly resistant to moisture - it is only enough for the gluing process. | |
| Moderate moisture resistance, allowing infrequent use wet cleaning surfaces | |
| Pronounced moisture resistance, which does not limit owners in the number of wet cleanings | |
| The wear resistance of the coating allows periodic cleaning with a brush. | |
| Limitations on the number of wet cleanings with a brush and using household detergents No. | |
| The surface finished with wallpaper has increased resistance to mechanical loads, including impacts and scratches. | |
| Wallpaper is not resistant to fading. | |
| Moderate sun resistance | |
| Wallpaper with increased resistance to fading. | |
| High resistance to fading when exposed to sunlight. | |
| Wallpaper with maximum resistance to ultraviolet rays, virtually resistant to fading under the most unfavorable operating conditions. | |
| Pictograms characterizing the features of removing wallpaper from the wall | |
| Wallpaper can be easily removed in one piece, without pre-moistening. | |
| When the wallpaper is removed, it separates into the front layer and the glued base that remains on the wall. | |
| To remove wallpaper from the wall, pre-wetting is required. | |
| Icons indicating the special properties of the wallpaper | |
| Wallpaper of duplex type, with a paper or non-woven base and an embossed front layer. Capable of hiding minor wall imperfections. | |
| This model is part of a selected collection, which includes other elements of decorative finishing of the room | |
| Icons indicating the order of applying glue | |
| The glue is applied only to the wallpaper itself. | |
| Only the wall is coated with glue. | |
| The wallpaper is equipped with its own adhesive layer, which requires moisturizing the canvas to bring it into working condition. | |
The next group of icons are the features of wallpapering and pattern matching. Since this issue directly affects the topic discussed in the article, such icons require a little more attention.
The reverse arrangement is usually typical for wallpaper with a vertical linear pattern, which does not require any alignment - only vertical joining. An example of such gluing is shown in the illustration below.
Such wallpapers are found - not so often, cutting them does not cause any particular difficulties, and the main thing is just not to forget about the need to constantly change direction - this way the drawing will acquire the desired completeness.
This type is the most convenient for cutting and further gluing. Cutting out canvases in desired length can be made from any arbitrary point. As a rule, this is a finish with vertical lines or a completely chaotic pattern - relief or shading.
| Wallpaper is glued end-to-end, with a symmetrically located pattern combined - horizontal alignment. | |
|---|---|
| Wallpaper is also glued end-to-end, but the pattern is spaced vertically. The result is a diagonal arrangement of the pattern. | |
| The amount of repeat (pattern step) and the amount of displacement (usually ½ repeat). |
Here it is necessary to make special explanations, since the cases are already more complex both for cutting and for wall mounting.
- In the first case it is a little simpler - all wallpaper sheets are symmetrical to one another or completely similar, that is, during preliminary cutting you can always focus on one point. And since in the vast majority of cases, cutting wallpaper into rolls in production is also carried out automatically from one starting point, cutting at home will be easier.
True, there is a nuance that can “upset” the master.
There is such a thing as rapport. This is a step between two completely identical drawings vertically. Since in this case all the canvases start from one point, it is possible that after cutting out the sheet, in order to start a new one, you will have to remove a lot of scraps. In the most unfavorable case, such a trim can be close in length to the height of the rapport, which, in turn, sometimes reaches half a meter or more. This must be taken into account when making calculations.
- The next case is even more difficult for cutting, and often causes difficulties for inexperienced craftsmen when gluing wallpaper correctly.
In this version, the pattern also has its own step, but the canvases are no longer symmetrical or do not start from the same point, since the pattern is shifted diagonally by a certain amount. Most often, this is half a repeat, although there are certain types of wallpaper that may have an offset of ⅓ step.
Wallpaper for painting
Again, when cutting canvases, a situation cannot be ruled out when the scraps will include pieces, in the worst case, even up to a whole repeat.
- The next icon in the table indicates the height of the repeat (in the numerator) and the amount of displacement of the pattern on the adjacent canvas (in the denominator). This should also be taken into account when making calculations required quantity wallpaper
This type is not so common, and usually such wallpapers do not require adjustment of the pattern - they simply create a common canvas, for example, for painting. So no special features are expected when cutting such sheets.
How to calculate the amount of wallpaper
Determining flow using tables
The easiest way, of course, to determine the required amount of wallpaper is to refer to tables that show the dependence on the perimeter of the room or even on the area of the room.
Consumption tables:
— for rolls of standard 10.05 × 0.53 m (from the perimeter of the room):
| Height of the wall to be pasted, meters | Perimeter of the room, including windows and doors, meters | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 6 | 9 | 10 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 21 | |
| from 2.15 to 2.30 | 3 | 4 | 5 | 5 | 6 | 6 | 7 | 7 | 8 | 8 | 9 | 9 |
| from 2.30 to 2.45 | 3 | 5 | 5 | 6 | 6 | 7 | 7 | 8 | 8 | 9 | 9 | 10 |
| from 2.45 to 2.60 | 3 | 5 | 5 | 6 | 7 | 7 | 8 | 9 | 9 | 10 | 10 | 11 |
| from 2.60 to 2.75 | 4 | 5 | 5 | 6 | 7 | 7 | 8 | 9 | 9 | 10 | 10 | 11 |
| from 2.75 to 2.90 | 4 | 6 | 6 | 7 | 7 | 8 | 9 | 9 | 10 | 10 | 11 | 12 |
| from 2.90 to 3.05 | 4 | 6 | 6 | 7 | 8 | 8 | 9 | 10 | 10 | 11 | 12 | 12 |
| from 3.05 to 3.20 | 4 | 6 | 7 | 8 | 8 | 9 | 10 | 10 | 11 | 12 | 13 | 13 |
— for rolls of standard 10.05 × 0.53 m (based on the area of the room):
| Height of the wall to be pasted | |||
|---|---|---|---|
| up to 2.5 m | from 2.6 to 3 m | ||
| Room area, m² | Number of rolls | Room area, m² | Number of rolls |
| 6 | 5 | 6 | 7 |
| 10 | 6 | 10 | 9 |
| 12 | 7 | 12 | 10 |
| 14 | 8 | 14 | 10 |
| 16 | 8 | 16 | 11 |
| 18 | 9 | 18 | 12 |
| 20 | 9 | 20 | 13 |
| 22 | 10 | 22 | 14 |
| 24 | 10 | 24 | 15 |
| 26 | 11 | 26 | 16 |
| 28 | 11 | 28 | 17 |
| 30 | 12 | 30 | 18 |
— for rolls of standard 15.0 × 0.53 m (from the perimeter of the room):
| Room perimeter, (including windows and doors), m | 6 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 26 | 28 | 30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wall height 2.0 ÷ 2.4 m | 2 | 4 | 4 | 5 | 6 | 7 | 7 | 8 | 9 | 10 | 10 | 10 |
| Wall height 2.4 ÷ 3.3 m | 3 | 5 | 6 | 7 | 8 | 9 | 9 | 10 | 11 | 12 | 13 | 14 |
— for rolls of standard 10.05 × 1.06 m (from the perimeter of the room):
| 6 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 26 | 28 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wall height 2.0 ÷ 2.4 m | 2 | 3 | 3 | 4 | 4 | 5 | 5 | 6 | 6 | 7 | 7 | 8 |
| Wall height 2.4 ÷ 3.3 m | 2 | 4 | 4 | 5 | 6 | 6 | 7 | 8 | 8 | 9 | 10 | 10 |
— for rolls of standard 25.0 × 1.06 m (from the perimeter of the room):
| Room perimeter (including windows and doors), m | 10 | 12 | 14÷16 | 18 | 20÷24 | 26÷30 |
|---|---|---|---|---|---|---|
| Wall height 2.0 ÷ 2.4 m | 1 | 2 | 2 | 3 | 3 | 4 |
| Wall height 2.4 ÷ 3.3 m | 2 | 2 | 3 | 3 | 4 | 5 |
Algorithm for independently calculating the number of wallpapers
Tables, of course, are convenient, but their accuracy is poor. Agree that it is one thing for wallpaper that is joined randomly, without any combination of patterns, and quite another thing if their rapport reaches 500 ÷ 600 mm. In addition, the room may have its own characteristics, which may also require consideration when determining the required number of rolls. Therefore, for greater accuracy, it is better to carry out the calculation yourself.
The initial data for calculations, again, will be the length of the walls in the room (perimeter) and the height of the areas to be pasted.
- Very often in tables or in practical recommendations the term “ceiling height” is mentioned, which is probably still not entirely correct, and under certain circumstances can be misleading. It would be more correct to proceed from the position of the wall section being pasted, and this value often differs significantly from the height of the ceiling. Thus, gluing is often carried out with a permanent baseboard at the junction of the floor and wall. Further, it is recommended to apply wallpaper when it is already mounted - and this is also a certain height. And the very idea of decorating a room may provide for gluing the canvases not right up to the ceiling, but only up to a certain level.
If a composite sticker is assumed, in which the lower part of the wall is decorated with one material, and the upper part with another, then calculations are made for each type of wallpaper separately, based on their height of the wall section.
- The second nuance is also obvious - not the entire perimeter of the room can be taken into account, but only the length of those areas that are subject to pasting with this particular type of wallpaper.
- In any case, no matter how the sticker is planned, all vertical sections without exception must be covered with solid sheets. Horizontal joints between wallpaper of the same type are not allowed - this will look extremely unsightly.
- This requirement predetermines the first stage of the calculation - you need to find out how many solid sheets can be obtained from one roll.
To do this, divide the length of the roll by the height of the area being pasted, to which is added:
- for wallpaper that does not require matching the pattern - at least 25-30 mm on each side, for precise cutting of the canvases in place after gluing. Total amendment Δ H can be 50 ÷ 60 mm.
- if the wallpaper requires combining the pattern, then it is necessary, except Δ H, also take into account the height of the rapport R.
The result is a formula:
n=Lp/(Hc+Δ H+R)
n– number of sheets per roll;
Lp– length of the wallpaper roll;
Hc– height of the wall to be pasted;
Δ H– additive for cutting;
R– the amount of rapport.
A simple example. The height of the wall section on which the wallpaper will be pasted (from the baseboard to the ceiling border) is 2550 mm. The roll of selected wallpaper has a length of 10050 mm, and the repeat indicated on the label is 32 cm (320 mm).
n = 10050 / (2550 + 50 + 320) = 3.44 ≈ 3 pcs.
The value is always rounded down to the nearest whole number. In total, from one roll you get only 3 whole canvases. The remainder from each roll will be 1290 mm, but they will also be useful for finishing wall fragments.
- Now you need to decide how many canvases will be needed to fill the entire area of the walls around the perimeter of the room (or the area to be finished). Calculating this is not difficult, since the length of the walls is known, as well as the width of the wallpaper roll.
N = Рп/D
N— the total number of required canvases;
Rp- length of the walls (perimeter of the room or total length of the areas to be finished).
D- width of the wallpaper roll.
For example, a room is completely papered, and its perimeter is 17.8 meters. The selected wallpaper is 530 mm wide (0.53 m).
N = 17.8 / 0.53 = 33.58 ≈ 34 canvases
The resulting value is also rounded, but always up.
- All that remains is to determine how many rolls need to be purchased. Obviously, you need to divide the total number of canvases by the number of canvases obtained from one roll.
K =N/n
For our example:
K = 34 / 3 = 11.33 ≈ 12 rolls.
The resulting value is always rounded up.
The calculation is quite simple, but perhaps some readers will still have questions regarding the unclosed sections of the wall - should they be taken into account when making calculations? For example, what to do with windows and doors?
There is no single “recipe” for this case - a lot depends on the specific characteristics of the room, and you should, in a certain sense, approach it creatively:
— Firstly, doors and windows are different. If it’s on the wall it’s big panoramic window or a wide double-leaf door - there is no particular point in including them in the general perimeter, since the estimated number of wallpaper sheets will be too large, which will simply remain unclaimed.
If the window is small, or the door (for example, to a bathtub or toilet) is not wide, then it often makes sense to simply “not notice” them and include their location in the general perimeter of the room.
— The second evaluation criterion is the amount of material remaining after cutting the rolls. Let's say, in the example discussed above, each roll leaves a surplus of 1290 mm. This amount should be enough to completely cover all fragments of the wall above the doors, above and below the windows. However, it also happens that the roll is cut with almost no residue, and you can’t count on scraps. In this case, of course, better plots windows and doors should be included in the overall perimeter.
What to do with areas that, in order to save materials and labor costs, the owners do not plan to seal - behind stationary large-sized furniture, behind carpets, etc.? It is difficult to say how justified this approach is, because it is possible that you will soon want to make some kind of rearrangement in the room. However, here everyone decides for themselves.
Another tip is to always purchase one roll more than what you calculated. Even if the pasting went brilliantly, without any defective stripes, this spare roll will not take up much space during storage, but sometimes it can come to the rescue. Accidentally damaged surface, indelible stain and other unexpected situations - you can always carry out a quick redecorating unsightly area.
Below is a calculator that will allow you to quickly and with a sufficient degree of accuracy calculate the required number of rolls of wallpaper to decorate a room. When compiling it, all the subtleties discussed above were taken into account.
Wallpapering walls is quick and relatively cheap way finishing of rooms. Before you go to the hardware store, decide how much material you need for the room. To do this, you need to know how to calculate the wallpaper so that there is enough for everything and no surplus left.
In this article we will look at how best to make calculations, what measurements need to be made, and what to pay attention to when planning a purchase.
Calculation of wallpaper for a room: formula and instructions
You need to choose the wallpaper correctly and calculate its quantityAlong the perimeter of the walls it is easy to calculate the wallpaper for the room. The formula is as simple as possible. Using a tape measure, measure the length of two walls, add the resulting numbers and multiply the result by 2.
For example: the length of one wall is 4 m, the other is 6 m. Thus, the perimeter is: (4+6)*2=20 m. Then find the height of the ceiling. Let's say it is 2.5 m. At this height, one roll can be divided into four equal strips, since the standard roll length is 10 m and its width is 53 cm.
The total width of four stripes is calculated by multiplying their number by the width of one strip: 4 * 53 = 212 cm. Then the perimeter is divided by 212, it turns out: 2000/212 = 9.43, the amount is rounded up and the number is 10. Thus, for a room with a perimeter of 20 m you will need 10 rolls of wallpaper. From the table presented you can find out how many rolls are required for a room with different ceiling heights and different perimeter.
| Ceiling height | Perimeter of the room, including doors and windows, in meters | ||||||||||
| 9 | 10 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 21 | |
| 2,15 – 2,30 | 4 | 5 | 5 | 6 | 6 | 7 | 7 | 8 | 8 | 9 | 9 |
| 2,30 – 2,45 | 5 | 5 | 6 | 6 | 7 | 7 | 8 | 8 | 9 | 9 | 10 |
| 2,45 – 2,60 | 5 | 5 | 6 | 7 | 7 | 8 | 9 | 9 | 10 | 10 | 11 |
| 2,60 – 2,75 | 5 | 5 | 6 | 7 | 7 | 8 | 9 | 9 | 10 | 10 | 11 |
| 2,75 – 2,90 | 6 | 6 | 7 | 7 | 8 | 9 | 9 | 10 | 10 | 11 | 12 |
| 2,90 – 3,05 | 6 | 6 | 7 | 8 | 8 | 9 | 10 | 10 | 11 | 12 | 12 |
| 3,05 – 3,20 | 6 | 7 | 8 | 8 | 9 | 10 | 10 | 11 | 12 | 13 | 13 |
How to calculate the number of wallpapers with a pattern
Wallpaper with a pattern counts differently In order for the fragments of a large pattern to coincide on adjacent panels, they are shifted in a certain way. A sales consultant cannot always advise on how to calculate the amount of wallpaper with large patterns. Therefore, when purchasing them, 2 additional rolls are added to the required number of rolls.
Repeat (the arrangement of sheets relative to each other and their number on one wall) is indicated on the packaging. The larger it is, the more waste remains when gluing combined panels. Therefore, for large premises it is advisable to buy more additional rolls. To save money, you can use the remaining waste to cover inconspicuous places: under the radiator, behind the doors, etc.
Calculation of wallpaper for painting
The standard size of wallpaper for painting is the same as regular wallpaper - 10 m by 53 cm. There are other size options: 17 m by 53 cm, 33.5 m by 53 cm and others. To calculate them, the table below is given:
| Ceiling height (m) | Room perimeter (m)/number of rolls | |||
| 10 | 15 | 20 | 25 | |
| 2 | 2 | 2 | 3 | 3 |
| 2,25 | 2 | 2 | 3 | 4 |
| 2,5 | 2 | 3 | 3 | 4 |
| 2,75 | 2 | 3 | 4 | 4 |
| 3 | 2 | 3 | 4 | 5 |
| 3,25 | 2 | 3 | 4 | 5 |
Calculation of non-woven wallpaper
The width of the rolls of non-woven wallpaper is 100 cm. We must not forget about this when dividing the perimeter of the room by the width of the panels. These wallpapers are calculated according to the same principle as regular ones, using the perimeter and height of the walls.
Additional protrusions or corners in the room increase material consumption. When gluing the corners, an overlap is made, and then the wallpaper is cut so that the pattern on the adjacent strips fits evenly. In such cases, 1-2 additional rolls are required.
Calculation of wallpaper by room area
Another way to calculate is to calculate the wallpaper by the area of the room. To find the perimeter, we use the already known indicators of length, width, height - 4.6 and 2.5 m. Find the area of one wall: (6 + 4) x 2.5 = 25. We multiply the resulting amount by 2, since there are identical walls in the room 2, and we get 50 square meters.
Then we calculate the area of one roll. To do this, we multiply 0.53 by 10, the product of these numbers is 5.3 sq.m and is total area roll, it can cover 5 square meters of space.
Wallpaper for walls with a border is calculated according to the area of the walls or along the perimeter
Modern designers have invented a finishing method in which not only the wall, but also the border or border is covered with wallpaper. decorative plinth. There are special wallpapers on sale, the design of which is suitable for such pasting. It is applied in such a way that its elements that fall on the border fit perfectly with the elements on the wall.
Walls with a border look interesting Manufacturers create compositions that allow you to combine wallpaper in contrasting colors and different patterns at the bottom and top of the wall. And the border will serve as a separator for the pictures.
Typically, rooms with borders are tiled according to the ratio: 1 part on the bottom, 2 parts on the top. The amount of wallpaper with such cladding is also calculated based on the perimeter.
With a ceiling height of 2.68, the length of the lower panel is 100 cm, the upper one will be 168 cm. From one 10-meter roll you will get either 10 lower parts or 5 upper ones. Those. The length of one roll is divided by the length of each part.
If you have difficulty calculating the perimeter, you can use the following algorithm. Add the length and width, multiply the result by 2 and subtract the width of the door and window openings from the product. For example, the width of the room is 6 m, the length is 4 m. The standard width of the door is 0.9 m, the window is 1.5 m. Mathematically it looks like this: (6+4)*2 – (0.9+1.5) =17.6 m, which is the total perimeter of the room.
To calculate bottom part, divide the roll into 10 strips 53 cm wide. 53/10 = 5.3 - the area for which 1 roll of wallpaper is required. Then, divide the perimeter by this figure: 17.6/5.3=3.3. Thus, to cover the lower part of the room you will need 3-3.5 rolls.
The upper part is calculated according to the same principle. It is known that 1 roll produces 5 top panels. One roll can cover 2.6 meters of wall. Perimeter – 17.6 divided by 2.6. As a result, 7 rolls are enough for the top of the room.
There is another way in which we calculate the amount of wallpaper based on the area of the walls. To do this, we will conventionally take the upper and lower parts of one wall as different walls. We find the area of each of them using well-known formula. Then we add the two resulting products and multiply by 4, according to the number of walls in the room.
Calculations for combined cladding
The cladding is not always limited to just gluing wallpaper. Modern designers offer combined solutions for wall decoration. Can be used either different types materials, or wallpaper different textures and flowers.
The material for such repairs is calculated individually for each case. For example, you are going to highlight with a bright insert some fragment of a wall, 3 m wide. With a ceiling height of 2.5 m, 6 panels or 1.5 rolls of wallpaper will be spent on this insert. For this you will need 1 roll of non-woven wallpaper, since its width is 100 cm.
Can be combined different variants finishing Wallpaper is a convenient and practical way interior decoration wall, which has not lost its popularity over the years. In addition, if it is necessary to update the repair without special costs and effort, you just need to stick other wallpaper.
The choice of materials and colors is large enough so that everyone can choose a design to their liking. When choosing wallpaper, you should not forget not only about calculating the required quantity, but also about correct selection Supplies(glue, brushes).
You may have some wallpaper left, and then in case of minor damage to the surface, you can re-glue it, hiding the defects.
If you doubt that you can paste the wallpaper yourself, seek help from specialists.
Not a single online calculator will help you correctly calculate the amount of wallpaper for a room. irregular shape. How much to “throw” on niches, how much to “subtract” from windows and doors, should you glue behind furniture? Do I need to add headroom? We asked - we answer.
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Do you need an online calculator?
For reference only. It’s better to calculate how much wallpaper you need yourself, and then check yourself online. There are indeed many wallpaper calculators on the Internet. Some are quite primitive: they ask you to set only three parameters - the length, width and height of the room. Others are more complex: they take into account repeat and roll dimensions. If you use calculators, it is advisable to use precisely this detailed one. In any case, the calculator will not calculate niches, ledges and other non-standard areas in the room for you.
1. Determine the required number of canvases (divide the perimeter of the room by the width of the roll).
2. Determine how many sheets are in the roll (we divide the length of the roll by the length of one sheet).
3. Determine how many rolls are needed (divide indicator No. 1 by indicator No. 2).
Pictured: What A Hoot Little Letters wallpaper 70523 from Harlequin.
Where to start the calculation?
From the perimeter. The perimeter is calculated using a simple scheme - add the length of one wall with the length of the adjacent wall and multiply by two.
Example: If one wall is 4 meters, the other is 3, then the perimeter will be 14 meters.
What adjustments are made for niches and projections?
They need to be taken into account. In this case, the perimeter is calculated differently - since the length of the walls opposite each other will be different (due to niches or protrusions). The length of each wall along the floor is measured separately (taking into account the recesses and protruding parts). Then all the indicators are added up. This results in a perimeter.
Should windows and doors be “subtracted”?
Better not. Of course, these elements are not included in the surface to be pasted, and if you want to save money, you can calculate the width of the door and window openings from the perimeter of the room, but experts do not recommend doing this - traditionally, the area of the window and doorway is left in reserve.
Should I wallpaper behind furniture?
Not if you don't rearrange. Before calculating the amount of wallpaper, think about how the furniture will stand. If one of the walls is completely covered with shelving or a wardrobe, do not bring it into the perimeter of the room, and do not glue wallpaper behind the furniture.
Behind a lonely closet or chest of drawers You also don’t have to glue the wallpaper. But you shouldn’t subtract the area of the unpasted area from the total footage. This area will be used as a reserve. It is advisable that the wallpaper extend 10-15 centimeters behind the closet.
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If the room niche is occupied by a closet, you don’t have to glue the wallpaper behind it, but it’s still better to measure the niche taking into account all the protrusions and the results obtained should not be excluded from the calculations.
Why consider rapport?
Important for patterned wallpaper. Rapport is the step with which the pattern is repeated on the wallpaper. Its size is indicated on the packaging. This value must be added to the height of each canvas. Otherwise, it will not be possible to cut the wallpaper so as to match the pattern between the two canvases.
How to count wallpaper with offset?
In the photo: an icon symbolizing displacement during gluing.
See markings. It happens that in order to match the pattern, each subsequent canvas must be glued, shifting it upward by a certain number of centimeters (usually half the repeat). In this case, the displacement value is also necessarily added to the total height of each canvas.
How to determine the height of the canvas?
You need to know the height of the room. Rapport is added to the height of the room, as well as, if required, a displacement step. Plus a margin for upper and lower cutting of the canvas - usually 8-10 cm.
Example: room height - 2 m 75 cm, repeat - 60 cm, no offset required. Let's take a margin of 10 cm for trimming the wallpaper. By adding these indicators, we get the estimated height of the canvas: 3 m 45 cm.
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In rooms with a complex volume, for example, in the attic, the number of canvases for each wall is calculated separately. If the wall is sloping, the maximum height is taken as the basis. Be prepared for a lot of cuttings.
How to determine the required number of canvases?
You need to know the width of the roll. It is always indicated on the packaging. The standard width is 53 cm. But in the case of wallpaper for painting, it can be even more. We divide the perimeter of the room by the width of the roll, round the result up, and this way we find out the number of canvases needed to cover the room.
Example: Our perimeter is 14 m. We divide it by 53 cm. We round the result up to a whole number and get 27 canvases.
When calculating the height of the wallpaper, you need to know the height of the ceiling in the room. To this figure, do not forget to add rapport and 8-10 cm for trimming.
In the photo: Magnolia 72/3009 wallpaper from Cole & Son.
How many sheets are there in a roll?
You need to know the length of the roll. It is also always indicated on the packaging. The standard length is 10 m 05 cm, although there are other options. Divide the length of the roll by the height of the canvas. The indicator is rounded down.
Example: The length of the roll is 10 m. The height of the canvas turned out to be 3 m 45 cm. This means that only two canvases fit into one roll. The rest, alas, is scraps.
How many rolls do you need per room?
Final count. Divide the number of canvases needed per room by the number of canvases per roll. We round the result up and add one more roll for reserve.
Example: We need 27 canvases for the room. We have 2 canvases per roll. After rounding we get 14 rolls and add one more. Result: 15 rolls.
Why keep a roll for spare?
In case of marriage. When gluing, there is always a risk of ruining one or two canvases. Therefore, you can’t do without a spare roll - even if you didn’t save when calculating and didn’t subtract the area of windows, doors and chests of drawers.
For repairs. A spare roll will be useful for covering a stained or worn area of wallpaper in the future. If the room is a walking room and there are animals or children in the house, the appearance of such areas will not be long in coming.
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Do not throw away leftover wallpaper and unused rolls: they will almost certainly be useful for current repairs worn or stained areas on the walls.