Sewerage

Easy and simple calculation of the number of bathroom tiles. How to calculate the number of bathroom tiles

The tile is the most widespread finishing material which is used for facing not only internal, but also external surfaces. He endures temperature fluctuations, he does not care high level humidity, but most importantly - ease of maintenance. When choosing this material for an apartment or house, the first thing you think about is the question: how to calculate how many tiles are needed in each case?

As a rule, most people initially, depending on the cost, purchase an approximate amount of the necessary material (tiles, wallpaper, etc.). However approximate calculations lead to unreasonably high costs. The excess will simply gather dust in some corner, without bringing any benefit. In the framework of this article, we will try to do without it and make a more accurate calculation, based on what exactly the tile will be spent on.

The need for calculation

If you need to make repairs in your apartment or private real estate, you need to calculate everything correctly so that there is no surplus. Some people think that extra material is not a hindrance, but in reality everything is not so simple. During repairs, most people spend a considerable amount of financial resources, and excess tiles lead to unjustified costs. After all, hardly anyone wants to overpay for floor tiles ?! In addition, its remains are usually not needed by anyone.

Often, having made an approximate calculation of the amount of material, you can find that it is simply not enough. It remains to go to the store and buy the necessary balance. However, everything is not so simple here. The fact is that each batch produced has differences in shades. For this reason, in many stores, samples from the same collection have different prices. As a result of all this, on the floor or walls, you can see areas with different tonality, which somewhat spoils the overall impression.

In order to prevent the destruction of harmony in the design of the room, it is better to immediately make the most accurate calculation of the tile as possible. When choosing tiles for the floor or walls for your room, you should know its pros and cons, so as not to be disappointed later. You may need to give preference to another finishing material, who knows ?!

Advantages of tiles

The popularity of tiles is difficult to underestimate or overestimate due to the presence of obvious advantages of the material:

tolerates moisture;
does not fade in the sun;
immune to aggressive environments;
easy to wash;
it can be used in low or high temperature environment;
relevant for the underfloor heating system of the bathroom or kitchen.

On the market, tiles come in a wide variety of shapes and shades. Thanks to this, the material deservedly enjoys fame among professional designers. With it, you can create original interiors, as the tile itself is already a good decor. In our modern times Every year interior decoration is becoming more and more popular. At the same time, not only bathrooms and kitchens are partially finished, as we have become accustomed to seeing. Living rooms also look good with elements of this decor.

Disadvantages of finishing decor

To solve the question of how to calculate how many tiles are needed for different surfaces, the shortcomings of the material should also be known in person. Compared to the pros, there aren't many. And one of them is a high degree of rigidity. On the one hand, this is even an advantage, but on the other hand, the dishes that fall on the tiled floor will inevitably break. Also, because of this quality, there are serious difficulties when cutting tiles. Especially in relation to material with a glazed surface.

In addition, enameled and polished tiles are quite slippery. Fortunately for most repair enthusiasts, all of these shortcomings are not so serious, so now you can safely proceed to the direct study of calculating the required number of tiles.

Features of the calculation of the facing material

How to calculate the number of tiles? any universal variant or there is no special formula for this. Some may immediately object that it is enough to know the area of \u200b\u200bthe room. In fact, not everything is as simple as it might seem at first glance. It is important to take into account the condition of the floor, what will be the final version, the dimensions of one tile sample. It is also important to consider whether the pattern will be created, the way the tiles are laid and what kind of surface: floor, walls, backsplash (usually in the kitchen) or bathroom (in whole or in part).

Let's try to understand this difficult issue. By making the calculation according to the methods described below, you can determine the net number of tiles. However, in the course of work, it will need to be cut, and therefore it is worth adding another 10-15% to the result obtained. This is the error that is inevitable - the material will break when cutting and the like.

Number of tiles per floor

How to calculate the number of tiles per floor? The basis should be taken the size of the room and the tile itself. In doing so, you can use different ways. For example, let's take the average dimensions of a room, which is typical for most residential buildings: length - 3 meters and width 2 meters. For calculation, it is better to reduce all known ones to one form: length - 300 cm, width - 200 cm, dimensions of the tile - 20 x 15 cm.

To begin with, you can determine the area of \u200b\u200bthe floor in the room and one tile. This is not so difficult - the length is multiplied by the width (the answer is 60,000 cm 2 and 300 cm 2, respectively). Now you need to divide both values \u200b\u200bbetween themselves, the result is the amount of material. That is, Q=60000/300=200 (pieces). If the answer is a fraction, it must be rounded up, for example, 63.35=64.

You can divide the floor length by the same tile parameter (the answer will be 15 cm). The same with the width - 200 divided by 15 and we get 13.33. It remains only to multiply the obtained values \u200b\u200bwith each other and calculate Q \u003d 13.33 * 15 \u003d 199.95, but taking into account rounding - 200 pieces. Taking into account the same error - 220-230 pieces, no less.

Calculation of tiles on the wall

How to calculate the tiles on the wall? Here everything is already somewhat more complicated. If tiles of the same color are laid on several walls (or on all 4, as when facing a bathroom), then the calculation can be carried out as with the option for the floor. First, the number of tiles in relation to one wall is determined, and then the other, and so on. At the end, the results obtained are summarized, not forgetting to add 10-15%. Only when measuring the walls, it is worth excluding the area of \u200b\u200bthe interior passage, as well as all other places where there will be no tiles.

Another thing is if you need to lay out a kind of pattern or ornament from the tile, as you like. Here it is worth learning a little about the specialty of the designer, armed with a pencil and a leaf, on which to draw up an approximate drawing, on which the whole pattern and the location of each tile will be clearly visible.

To begin with, it is worth carrying out a standard calculation of wall tiles with a pattern for one of the walls. That is, measure its height and divide by the length of the tile. For example, the height of the room is 250 cm, and the length of the tile is 30 cm. As a result of division, we get the answer - 8.3, which is rounded up to 9. That is how many horizontal rows there will be.

Next, we take into account the length of the wall (or width), for example, 300 cm (200 cm). Suppose that we are laying a square tile and therefore its other parameter is also 30 cm. Now we are already calculating the number of vertical rows and as a result of the calculation we have - 10 (20). Now we multiply these two values: 9*10 (20)=90 (180).

Now it's time to turn to our drawing and count how many tiles of the distinctive color. Then this number is subtracted from the total calculated amount.

How many tiles are needed for a bathroom

In fact, determining the amount of tiles for a bathroom is practically no different from the examples above. Here it is also necessary to measure the height and length (width) of the walls. Typically, such premises in many residential buildings are made in the correct square or rectangular shape. In this case, if it is a square, it is enough to measure the parameters of one of the walls, and then multiply by 4 during the calculation. In a rectangular room, you already need to measure two walls, and again you need to multiply by 2.

Sometimes it is difficult to calculate how many tiles you need for a bathroom. The fact is that the interior of some rooms is complicated by niches and protruding elements. Then you will have to separately measure each surface on which the tile will lie.

The values obtained should be recorded, but for greater convenience, it is better to plan the room. At the same time, indicate the location of plumbing, furniture and other elements. This will allow you to more accurately determine how much material is needed and minimize excess.

Usually, during the calculation, you need to exclude some areas. For the bathroom, this is a doorway. It is also not necessary to lay tiles under the bath, as this part of the walls will not be visible. Especially when he puts up a screen, which will save a little on material. Therefore, measuring the height of those surfaces to which the bathroom adjoins should begin with its sides.

Counting tiles per apron

How to calculate tiles for an apron? Usually the dimensions of this area, minus the wall cabinets and allowance for the countertop, is 55-75 cm, which corresponds to the standard. However, in some cases, this working section of the kitchen can be of excellent size.

To determine how many tiles will go to the apron, it is necessary, first of all, to find out whether it will be done for the entire length of the wall or not.

If the furniture is already present, then you need to measure the necessary parameters:

the height of the bottom row of cabinets with a tabletop and legs (if any);
the height of the top row of cabinets;
in the presence of a pencil case and its height will be needed.

In addition, it is also worth considering the height of the hood, which is usually equal to 72 cm from the countertop and its allowance, which is another 10 cm. It is also necessary to deviate from the apron by 3-5 cm to hide its edge behind the headset.

If there is no furniture yet (with overhaul or for a number of other reasons), two borders should be marked on the wall below and above. The first is a line of floor cabinets and the second is the bottom edge of the wall cabinets. You need to draw the lines evenly with the help of a level to the required length. This will allow you to more clearly and accurately solve the question of how to calculate how many tiles you need.

In any case, you get a rectangular section, for which you need to measure the length and height to calculate the area of \u200b\u200bthe apron. If the plot is angular, then the calculations are carried out with each of the walls, and after that the two results are summed up. You also need to calculate the area of \u200b\u200bthe tile.

Now it remains to divide the calculated value of the apron by the area of \u200b\u200bone tile, thus determining their total number. Just don't forget about the 10% margin. Fractional numbers are rounded up.

Diamond styling

A similar way of laying tiles on the floor or walls looks more prestigious and harmonious. How to calculate is already known - to determine the area of surfaces (walls, floors) and tiles. Then share the received data among themselves. For example, the floor area was determined as 7.5 m 2, and the tile - 0.09 m 2. Then the result will be: Q \u003d 7.5 / 0.09 \u003d 83.33, taking into account rounding, we get 84 pieces.

The tile must be laid from the center of the surface to the periphery, the size and shape of the tile should also be taken into account. In addition, you will need to trim the edges, which increases the consumption of material. For this reason, the stock will be already 15-20%. That is, in the end we have 97-100 tiles.

Finally

As you can see, calculating the required amount of facing material is not as difficult as it seems to many. And to facilitate the whole process or when you are too lazy to carry out all the calculations yourself, there is a convenient opportunity - an online calculator. All that is needed is to enter the required data. Therefore, measurements still need to be taken.

You can also contact a specialist who will calculate everything on the spot within half an hour. But at the same time, you will have to part with a certain amount of money, as well as listen to a professional opinion that it is better to entrust the installation to specialists. Perhaps even from the company where he works.

But if only an experienced person in this matter can really cope with laying tiles, then each of us can solve the problem of how to calculate how many tiles are needed. Still, we all studied at school, at least most of them.

One wall drawing

The calculator calculates the number of tiles not by area, as is done on most sites, but by the number of tiles by the height and width of the room. In this case, the number of tiles is first rounded up to a larger integer, and only then the total number of tiles is calculated by multiplying the number of a whole tile in width by the number of a whole tile in height. Similarly, the number of tiles is calculated taking into account voids. This approach takes into account the amount of tile waste when changing the position of the void. Any tiler knows that when the door in the room is adjacent to the wall, there will be less waste. But most similar calculators that calculate the number of tiles by area do not take this feature into account.

X - wall width

Xd - width to void

X1 - void width

Xp - width after void

Y - wall height

Yd - height to empty

Y1 - void height

Yp - height after emptiness

FY - tile height

EX– tile width

Enter all dimensions one by one in the corresponding places of the form. Dimensions must be given in mm. If the wall is completely tiled, that is, there are no doors, windows and voids on the wall, then in the form where the dimensions “to void”, “Void width”, “Void height” are indicated, zeros must be set.

If there are voids on the wall (where the tiles are not glued), you need to carefully measure the distance to the void in height, width and dimensions of the void itself. The size above the void in height and behind the void in width is calculated automatically by the calculator.

If the dimensions are entered incorrectly, there will be a warning "Non-pushable".

The calculator is designed for tile layout from bottom to top, from left to right. This means that the cut tile (if any) is located at the top of the wall and to the right when looking at the wall. If you need a tile layout from right to left, this can be taken into account by resizing to a void in width and, when laying out the tiles, consider the pattern as a mirror image. Specify the size of the seam between the tiles, the number of cut tiles depends on it and, accordingly, an increase in the amount of waste is possible. With small wall sizes for cladding, the size of the seam only affects the amount of tile waste, with wall sizes of 10 or more tiles, the size of the seam can also affect the number of tiles to be purchased. When facing tiles, do not cut the tiles all at once (for example, if there is a tile that needs to be cut before the void in height, then see the calculation, you can use parts of an already cut tile). So waste tiles will be minimal. Similarly for the last row in height and width of the wall. If the remainder of the cut tile exceeds the size of the tile to be glued, then it is better to cut it off from the already cut one.

The "Tiler Skill Qualification" indicator takes into account the skill of the tiler. It is known that most of the waste appears when cutting tiles. Therefore, this calculator calculates the number of cut tiles and the percentage of scrap when cutting, depending on the qualification.

This parameter is subjective. It indicates that 10% of all cut tiles will be damaged by the qualification of the tiler, defined by the number "1". Accordingly, 20% of the cut tiles are damaged when the number "2" is entered. And so on. This parameter can be specified from your own experience if you know the tiler well, or ask the tiler himself how many tiles can be damaged when cutting.

Taking into account the qualifications of the tiler ensures the possibility of a one-time purchase of the entire required number of tiles. There are situations when the number of tiles is incorrectly calculated and you need to buy more, and the tiles of the same batch have already ended. A similar tile from a new batch may differ in tone and this will be an unpleasant surprise.

After entering all the necessary dimensions into the forms, you must click the "Add" button. The name of the tile, calculations of the number of tiles and the price are recorded in the specification. When the calculation is completed for all walls with the same tile, click the "Total" button. The corresponding line will appear in the specification with the calculation of the total number of tiles and its total cost. Make sure that only the same type of tile gets into the specification, otherwise you will get an error. If a tile of a different type is accidentally added, you can delete it before clicking on the "Total" button. If necessary, you can delete the entire BOM table.

In a situation where there is both a void for a bathtub and a window on the wall, i.e. several voids, it is better to divide the wall into two or three, depending on the number of voids. A conditional dividing line must be made at the place of multiple laying of tiles, taking into account the seam. So for example, with a tile height of 300 mm., The height of the section can be made at a height of 900 mm. plus the thickness of the two seams. Then, in the schedule, these parts of the wall will be summed up automatically.

Repairing a bathroom, and indeed any room, is always a troublesome, costly, time-consuming task. To do this, it is necessary to prepare a large number of various tools, materials, select them in accordance with certain requirements. In addition, you need to take into account the design of the apartment so that the space being equipped does not fall out of the general idea, unless, of course, this was originally planned.

In order to spend Finishing work it is necessary to calculate the exact amount of required materials. Moreover, you should buy the entire norm of products and even with a margin, since another batch of products is likely to differ in tone or texture, which is very ugly.

Under the finish in the bathroom choose tiles. She possesses various forms, sizes, colors, suitable for floor and wall laying. The number of products that will be needed will depend on these parameters. So, how to calculate how many tiles you need?

Tile selection

Before calculating the required number of products, it is necessary to determine their characteristics. The bathroom differs from the rest of the premises in its high level of humidity, which makes the requirements for finishing materials high enough.

When purchasing a tile, you should take into account its properties, which it should have especially for flooring:

abrasion resistance;
high strength;
resistance to temperature extremes;
moisture resistance;
resistance to household chemicals;
resistance to abrasive agents.

First step

Before you start calculating the number of bathroom tiles, it is best to carefully measure the room by recording the data obtained. This will help the usual tape measure or rangefinder, which are available in every store.

The measurement takes place in two planes: the height and width of the walls. If they have the correct shape, then it is enough to take 2-3 measurements. In the event that there are protrusions or depressions, then they should be measured separately.

In addition, you need to know the exact proportions of the door and, if any, window openings. This will allow you to more accurately calculate the required material. Experts even recommend drawing up a plan of the room, where the position of the plumbing, the total area, the parameters of the wall and floor are noted. As a result, this approach will give a more complete picture of what is happening and help to make accurate calculations.

Worth remembering! If the walls in the bathroom seem even, then this is not always true. Therefore, it is necessary to carry out several control measurements in order to avoid errors in the calculations.

We determine the amount of material. Method #1

The first indicators are achieved by multiplying the length by the width and are removed from the floor area. By analogy, the area of \u200b\u200bone tile product is calculated, and the data obtained are rounded up.

Having received two approximate numbers, we divide the floor area by the area of \u200b\u200bceramics, and the resulting value is rounded up to a larger integer. Thus, we have a certain number to which we need to add 5%, i.e. multiply by 1.05, and the result is rounded up.

For clarity, it is necessary to calculate on an example, where we take the average statistical data. The initial ceiling is 2.70 m, the walls are 1.9 and 2.0 m, the door width is 0.7 m. If the conditional dimensions of the floor tiles are 35 by 35 cm, then the calculation will be as follows:

1.9*2.0=3.8 m2;
0.35*0.35=0.1225 m2;
3.8 m2 / 0.1225 m2 = 31 pcs.;
31 * 1.05 \u003d 32.55, which means you need about 33 tiles.

Method #2

The calculation of the number of ceramic products that will be laid on the floor is carried out due to the length and width. To do this, you need to divide each of these floor parameters by a similar tile value. The data obtained are multiplied, after which we round them up and add 5% again. Here is an example calculation:

1.9/0.35=5.42 pieces;
2.0/0.35=5.71 pieces;
5.42*5.71=30.96 pieces;
31*1.05=32.55, i.e. you need about 33 tiles.

Bathroom tile plan

Need to know! Usually managers in specialized stores prefer to use the first method to determine the exact amount of material.

We determine the number of products per wall. Method #1

Under the facing of the wall surface, we need a certain number of tiles. To do this, we calculate the perimeter of the entire room. We add the length of each wall separately, after which we add together the length with the width and multiply all this by 2. (1.9 + 2.0) * 2 = 7.6 m.

Then subtract the width of the doorway from the perimeter, and divide the resulting integer by the length of the frieze. (7.6-0.7)/0.2= 34.5 pcs. Here it is based on standard size tiles 200 × 400 mm, and the dimensions of the frieze 200 × 80 mm. After that, the value is multiplied by 5%, where the result is displayed in 36 tiles.

Method #2

The following method allows you to find out the exact number of products required per sq. meter. This technique is proven and suitable for laying on any surface of various sizes. First you need to calculate total area bathroom, adding the length of each wall, after which the resulting value is multiplied by the height of the bathroom.

Let's look at an example, let's say the height is 2, the length is 3, the width is 2.5. Then 3+3+2.5+2.5=11m. The next step is to multiply the perimeter by the height: 11 × 2 = 22 square meters. meters - area. From it we subtract the space occupied by the door and window opening, of course, if they are available.

Let's say we got the number 20 square meters. meters. Then we find the total area of one ceramic product. Conventionally, 0.4 × 0.2 m, we get 0.08 sq. meters. Now it remains just to calculate the values. For this 20 sq. m/0.08 sq. m. = 250 pieces, while adding about 5-10% as a reserve of tiles.

It is with the above methods that you can accurately calculate the required number of tiles that will be required for a wall or floor. However, there are other techniques, known somewhat less than the examples shown. Thus, it remains only to use the knowledge gained and independently carry out all the calculations.

Video instruction

Any repair begins with the purchase necessary materials. To carry out facing work, it is important to make the correct calculation of tiles for the bathroom. Moreover, the possibility of error must be excluded, since if there is a shortage of material, work will have to be stopped and additional tiles purchased. If the product was sold in limited quantities, then you may not find the same tile. It is undesirable to purchase and superfluous facing material, since during the repair there is not enough money to scatter them thoughtlessly. How to calculate: how many tiles do you need exactly? In principle, there is nothing complicated in the calculations. You just need to carefully measure the room, apply the measurements obtained to the schematic drawing of the bathroom and, armed with a calculator, perform several mathematical operations.

How to calculate the number of floor tiles

The length and width of the bathroom is measured with a tape measure, and the results are recorded on a piece of paper. Do not rely on memory, which can fail. In addition to these values, you need to know the dimensions of the floor tiles that you decide to buy for finishing the room. Assume that a square floor tile with a side equal to 33 cm (0.33 m) is selected for laying. Let the dimensions of the bathroom be 1.7 by 1.75 m.

There are two ways to count:

We calculate the floor area by multiplying the length by the width of the bathroom: 1.7 * 1.75 \u003d 2.975 (m 2). Next, we calculate the area of one tile by multiplying the sides: 0.33 * 0.33 \u003d 0.1089 (m 2). Then we divide the floor area by the tile area: 2.975: 0.1089 = 27.3 (pcs.). As you can see, the result is approximate, so we round it up and get 28 tiles. However, always add 5% to the calculated number for the stock. In our case, we need to add two tiles (28 * 0.05 = 1.4 - rounded up to two). Thus, for the bathroom floor we buy 30 tiles.
We calculate the number of tiles laid in length. To do this, we divide the length of the bathroom by the side of the tile: 1.75: 0.33 \u003d 5.3 (pcs.). We carry out the same action with the width of the room: 1.7: 0.33 \u003d 5.15 (pcs.). This result round up to 5.2. The resulting results must be multiplied: 5.3 * 5.2 = 27.56 pieces, after rounding we get 28 pieces. We also add 5% and get the same result as in the first method, namely: 30 tiles.

How to calculate tiles for bathroom walls

To calculate the number of tiles needed for cladding the walls of the bathroom, you must also measure the height of the room. The dimensions of the selected tile are 20 by 30 cm, the curb - 8 by 20 cm. Let's say in our example the height of the bathroom is 2.7 m. You can calculate the number of tiles for each wall separately, and then add the resulting values. To reduce the number of operations, you need to calculate the perimeter (the sum of all sides).

Moreover, from the perimeter it is necessary to subtract the width of the doorway, which in our example is 0.6 m. We get: (1.75 + 1.7) * 2-0.60 \u003d 6.3. If the bottom of the walls will be finished with dark tiles, and the top with light ones, and a curb row will pass between them, then we divide the total height into three parts. We get: 2.7 - 0.08 \u003d 2.62. Let the height of the dark "bottom" be equal to 1 m, then the height of the light "top" remains 1.62.

We calculate the number of dark tiles: the area of the dark strip is 6.3 * 1 \u003d 6.3 (m 2). The area of one tile: 0.2 * 0.3 \u003d 0.06 (m 2). We divide the values: 6.3: 0.06 \u003d 105 (pcs.). Add 5%: 105 * 0.05 = 5.25 (pcs.). Round up to five. As a result, we get 110 dark tiles.
We calculate the number of light tiles: the area of \u200b\u200bthe light strip is 6.3 * 1.62 \u003d 10.206 (m 2). The area of the tile has already been calculated: 0.06 (m 2). We divide the area: 10.206: 0.06 = 170.1 (pcs.). Round up to 171 and calculate 5%: 171 * 0.05 = 8.55. You can stock up on 8 pieces. But we must not forget about the space above the door: 0.6 * 0.7 \u003d 0.42 (m 2). Divide this number by the area of the tile and get 7 tiles. As a result, we need 186 light tiles.
We calculate the number of border elements: 6.3: 0.2 = 31.5 (pcs.). Round up to 32 pieces.

Important! If you plan to use decorative inserts sold by the piece, then the number of main tiles is reduced accordingly.

There are several such methods, each in its own way is good. But, from the point of view of calculation and the process itself, the simplest is invariably straight masonry.

Direct tiling

Standard masonry is familiar to everyone, this method can be recommended to beginners.

Advice! If the ceiling in the room is low, then you should choose a high rectangular tile and lay it in a straight masonry method. This will visually "raise" the walls.

For high-quality diagonal styling, you will have to sweat. But the result is worth it. It should be noted that the diagonal masonry visually hides the curvature of the floors well.

Important! Laying tiles in a diagonal way requires additional material consumption, since you will have to cut a lot of tiles, moving from the corners in the center of the room. But do not rush to throw out the leftovers, suddenly they will be useful to you in another corner of the room.

Laying tiles with a checkerboard pattern

This option is usually used when they want to put ceramic tiles several colors. It turns out very interesting in terms of design bathrooms, worth a try.

Offset tiling

Such masonry implies the displacement of each subsequent row by the same distance. This option looks more elegant and you can always experiment with a variety of inserts, for example, use small square tiles, as was done in the photo.

How to calculate bathroom tiles

So, to avoid unwanted losses, we need to take measurements of the walls and floor.

On a piece of paper, write measurements for all the walls of the room, subtracting windows and doors. You can safely go to the store to choose the tile you need. Measure your tiles and write down your measurements. Now we can calculate how many tiles we need.

There are two ways to calculate - separately by length and width or by area.

We count the number of tiles (1 way)

To calculate the required number of tiles, for starters, we need to take measurements of the length and width of the surface.

Now we divide the height of the wall by the height of the tile. On the this stage you should already decide how you lay the tile if it has a rectangular shape - horizontally or vertically. If you are laying tiles on the floor, measure the length of the floor and the length of the tile accordingly.

For example, the height of the wall is 2.7 m, the height of the tile is 0.3 m.

2.7 / 0.3 = 9 tiles

That is, in height we have 9 tiles in a row.

2.25 / 0.2 = 11.25 tiles

When the number is not an integer, we always round up, we have up to 12. We get the number of tiles in width.

9 * 12 = 108 tiles

But this is not the final number yet, since 5% of the stock should be added to the amount received:

108 * 1.05 = 113.4 tiles

We round and thus we get 114 tiles on this surface.

We also do similar calculations for the rest of the walls, add up the results and have the total number of tiles per room.

We take into account the doorway and window frame

In order to get the number of tiles needed for the wall in which the door or window is installed, we need to subtract the number of tiles from the number of tiles on the opposite wall, which falls on the dimensions of the door or window opening.

Divide the height of the opening by the height of the tile:

2 / 0.3 = 6.7 tiles

round down - 6 pcs. in height. Rounding down, in order to subtract a smaller number of tiles and you have a margin.

0.8 / 0.2 = 4 tiles

We multiply the results and get 24 pieces, which we subtract from the total number of wall tiles. In a similar way, we can calculate the number of tiles for a wall with a window.