A preliminary calculation will allow you to plan your renovation budget and think through the bathroom design in detail. If you correctly calculate the number of tiles, you will not have to purchase additional material during the finishing process.
To measure the room you need to use a tape measure. Most exact values can be obtained using a laser device. Having found out the parameters of the bathroom (height and length of the walls, dimensions of the doorway), you can make preliminary calculations number of tiles. The simplest option is when the room has the outline of a rectangle or square. In this case, it is necessary to measure the minimum number of walls.
If the bathroom has a complex shape, you must carefully measure all protruding elements and take into account existing niches.
The results need to be recorded on the diagram, so it will be easier to calculate the materials. A drawing made to scale will also allow you to take into account all the details of the bathroom design and correctly plan the arrangement of furniture. The calculation algorithm is influenced by the type of masonry floor tiles(diagonal, rectangular, diamond, etc.).
2. Basic rules for calculating tiles
The calculation algorithm is quite simple. When calculating the exact number of tiles, you will need formulas for determining the perimeter and area of a rectangle.
To calculate the wall area we use the following formula:
Parameters A and B (width and length of the room) alternate depending on the specific area.
The perimeter of the rectangle is calculated by the formula:
P = (B + A) * 2.
Designations in formulas:
- S - area of a certain surface in the bathroom, sq.m;
- P - designation of the perimeter of the room, m;
- A - bathtub width parameter, m;
- B - length dimension of the room;
- H is the value of the wall height.
Calculation scheme:
- The total area of the room is obtained by adding the square meters of individual bathroom walls;
- Then, from the obtained value, you should subtract those areas that will not be laid with tiles, for example, the area of the door opening to the room or window.
In order to reduce material consumption, cladding is not done in the space under the bathtub. This option is possible if you plan to install a decorative screen. In this case, the height of the room for calculation is measured from the top level of the side.
Some sites provide a special calculator that allows you to determine the required volume of material for purchase. Using such programs, you can make the task easier when calculating the amount of material if tiles of different shades are combined.
3. Calculation of tiles for a bathroom with a total area of 4 sq.m.
Main dimensions of this room:
- Wall with opening - 2150 mm;
- The length of the short wall is 1900 mm;
- Doorway - 700x2000 mm;
- Room height - 2700 mm.
Dimensions of the selected bathroom tile collection:
- Wall tiles white- 500x250 mm;
- Green wall tiles - 500x250 mm;
- Decor - 500x250 mm;
- Green floor tiles - 500x500 mm.
Facing plan
Tiles intended for flooring are laid in one tone. On the wall with the door it is planned white tiles. The remaining surfaces of the walls are supposed to be done with alternating colors according to vertical stripes and also add decor.
Calculation of floor tiles
We determine the parameter for the area of one tile: S = 0.5 x 0. 5 = 0.25 sq.m;
- Total floor area: S = 4 sq.m;
- Calculation of the number of tile elements for the entire floor area: 4 / 0.25 = 16 pieces.
Calculation of tiles for bathroom walls
Wall decoration elements have the same format (width and height).
- One of the walls (with an opening) is covered with white tiles, let's calculate its area without the door: S = (2.15x2.7) - (0.7x2) = 5.805 - 1.4 = 4.405 sq.m;
- Area of one wall tile: S = 0.5 x 0.25 = 0.125 sq.m;
- Number of white tiles for a wall with an opening: 4.405 / 0.125 = 36 pieces (round the number up);
Let's consider another calculation method, which is suitable for surfaces with tiles of different colors.
- Number of tiles in width for other walls:
1.9 m: 1.9 / 0.5 = 3.8 pieces;
2.15 m: 2.15 / 0.5 = 4.3 pieces; - Number of tiles around the perimeter of three walls: (3.8 x 2) +4.3 = 11.9 pieces;
- We calculate how many elements fit in height: 2.7 / 0.25 = 10.8 pieces.
This value can be rounded down if you plan to install a stretch ceiling; - In this example the tile strips different colors oriented vertically.
Laying green tiles is planned in 8 vertical rows, taking into account decorative elements: (8 x 10.8) - 4 = 86.4 - 4 = 83 pieces; - Number of white tiles for three walls in width: 11.9 - 8 = 4 pieces.
For three walls in total: 4 x 10.8 = 44 pieces.
Final volume values of tiles for bathroom walls
White tiles: (36+44) = 80 pieces;
. Green tiles: 83 pieces;
. Decor: 4 pieces.
When calculating the number of tiles, it is better to take into account the safety factor. If the material is damaged, the remains can be used without discrepancies in shades.
Many rooms in a house or apartment are traditionally or at the request of the owners tiled ceramic coating, and it is very important to know how to calculate how many tiles you need.
If you are planning to make a beautiful apron in the kitchen, laying it out of tiles pastel colors, you can literally calculate the amount of material on your fingers, only by deciding on the number of rows. In this case, most likely, you will be able to completely avoid any costs, especially if you use square tiles. However, when completely covering walls or floors, certain difficulties arise. The fact is that in addition to the main type of tiles, there are also border tiles. Ceramic elements are not only square, but also rectangular, as well as multi-sided and shaped, with a complex patterned contour.
Provided that the first two types of form factor are laid in even rows, it will be quite easy to correctly calculate the amount of tiles for a kitchen or bathroom. It is enough to know the square footage of the surface to be finished and the area of the ceramic element to determine how much material will be needed for the walls or floor. But preference is not always given the simplest scheme cladding, it is enough to include a couple of borders in it, and the calculations will become much more complicated. Another problem will be added when the decoration includes tiles of different formats and all kinds of decorative elements.
You will face certain difficulties if you want to lay out the floor or walls with different types of multifaceted ceramic elements. The geometric pattern will turn out beautiful, but to determine the required number of parts you will have to calculate the area of each figure, as well as determine the percentage of its content in the overall composition. The same applies to tiles with a complex contour; here the task is complicated by the fact that for a shape that is far from geometric, calculating the area is quite problematic. Add to any of the options the presence of plumbing and communications in the room, as well as lighting fixtures on the walls, and it becomes clear that for each individual case you need to look for your own approach to how to calculate the tiles.
The shape of the bathroom, and in some cases the kitchen, is not necessarily perfectly rectangular. So be prepared by dividing his gender into simple geometric figures. For the most part, these will be the same rectangles and triangles. But in standard version, when the lengths of opposite walls are equal and all angles are 90 degrees, it is enough to multiply only 2 values - the sizes of adjacent sides.
Then, having found out the quadrature of the surface, we determine the area of the tile, and since we are looking for the simplest cladding option, our tile is rectangular and it is enough to multiply its adjacent faces. Thus, the easiest way to calculate ceramic tiles for the floor is to use the formula N = (AB)/(ab). Here N- quantity, A And B– adjacent walls of a room with a common angle, a And b– adjacent sides of the tile.
You can determine the amount of material based on the area of one ceramic element for tiles of any regular size. geometric shape, for which there are corresponding formulas.
Suppose you decide to decorate your bathroom with tiling using not only regular tiles, but also curbs. In addition, for greater effect, it was decided to lay alternating rows of ceramic elements with the same width but different heights. In this case, even if only 2 different standard sizes are involved, it will not be possible to determine the total amount of material taking into account the borders using the above formula. Therefore, we use another method, which, however, begins in the same way as the first - with determining the quadrature of the surface to be tiled, minus the area of the door and (if any) window opening. To calculate the material for the floor, it is enough to know its length.
Next, you should take all the elements that will be located in alternating rows one above the other and lay them out in a vertical column to the entire height of the finish. We determine the total area of the tiles, taking into account the spaces that are allocated for the seams, and then divide the quadrature of the surfaces being finished by the result obtained and find out required amount. However, this method is not ideal, since small errors arise: where the window and door are located, only tiles will remain in the columns, laid on the lintels and the wall under the window opening. Therefore, you can use a slightly different and more accurate method.
We determine the perimeter of the bathroom or kitchen minus the door and window openings. We divide the resulting value by the width of the column into which we stacked tiles of different heights. Thus, we found out the number of rows in that part of the room where there are no openings. For the lintels above the door and window, as well as for the section of the wall under the latter, we lay out columns and count their number on these segments separately. Next, it will not be difficult to determine the amount of material of each individual standard size by folding similar tiles in one vertical row and multiplying by the number of columns in the perimeter.
The walls and floor, on which ceramic tiles with a figured contour were laid, look very beautiful. However, it is precisely for such an often complex form factor that it is difficult to come up with a sufficient reliable way correctly calculate patterned tiles. Indeed, if there are no edges, and the contour consists of various smooth or sharp bends, alternating with all kinds of angles, it is almost impossible to calculate the area of the facing element.
It is very good if the manufacturer indicated on the packaging how many square centimeters of the surface to be finished the tile will cover. But such information may not be available if you were not interested in advance. Therefore the only one affordable way- practice drawing. First you need to take some squared paper, or better yet, graph paper. We draw on it the exact plan of the room where the finishing will be done, on a convenient scale. And then we carefully depict, also in proper proportion to the actual size, the figured tile. We draw the cladding according to your chosen pattern.
If all the elements are the same color, then upon completion of the drawing you are unlikely to have a question about how to calculate the tiles; it will be enough to count the tiles individually. We count individual fragments in pairs, taking each one as a whole facing element. However, it may be that you want to use 2 or even 3-4 tile colors for finishing. In this case, we turn the bathroom or kitchen plan into a coloring book, marking on it where this or that coloring will be located. Next, we count the monochromatic elements, and thus find out how many different tiles will be needed for the wall or floor. This method also suitable for determining the amount of material in complex mosaic installation conventional rectangular ceramic elements when using a large number of colors.
Tile is the most suitable material for, but also quite expensive. Therefore, in order not to have to buy more or throw away excess, you need to correctly calculate the tiles for the bathroom, and for this we can use special or programs online calculation and layouts.
Correct calculation of tiles during repairs allows you to save not only time spent on purchasing missing materials, which, it should be said, may not be in the store, but also money that will be spent on surplus. And in order to avoid these troubles, there are several ways. A classic and accessible method for calculating materials on paper, and a more modern and convenient method - online tile layout.
But in each case there are certain nuances that need to be taken into account in order to calculate the material as accurately as possible.
Laying scheme tiles matters in the further calculation of its quantity. Depending on the location of the seam between the tiles, there are several types of layout:
- Standard or basic (“seam to seam”).
- Diagonal, herringbone, labyrinth, bandaged, chess, run-up, carpet or modular layout, there are a great many options.
How to position the tiles correctly?
From an aesthetic point of view, it is important to consider the layout method, the location of the decor and color combinations in accordance with the area of the room. Finishing can visually change the proportions of a room.
In order to visually enlarge the room, use tiles light shades, horizontal laying method with transverse placement of the pattern.
Options for laying out tiles in the bathroom
The height can be increased by vertical layout, the use of contrasting stripes, vertical arrangement of friezes, and decodable elements in in this case It is better to place it slightly above eye level. Dark-colored tiles will visually make the room smaller. When choosing the color of floor tiles, it is important to consider that dark floors and light ceiling will visually increase the space, and vice versa.
It is important that the tile installation system is carried out with a minimum amount of trimming. This will not only make installation work easier, but will also visually make the finish correct and more beautiful.
The trim on the walls is placed symmetrically between the corners. The pattern is laid out on the floor in such a way that solid elements are located in the visible area, and all trimming goes to the least visible sides or is hidden under interior items. In matters of design, online tile layout will provide invaluable assistance, which will help create the most accurate visual model of the future finish.
Before calculating the tiles, it is important to take correct measurements of the room. It is carried out after the walls are prepared for laying tiles. Each side is always measured separately, even if the room correct form. Round the resulting value up. The size of the doorway and window is subtracted from the overall measurement. Sometimes areas that will not be finished, for example, hidden behind the bathroom, are also taken away from the total area.
We measure the area of the walls and floor
When a room of a complex configuration has protruding elements, niches or boxes, their measurements are taken separately. It is better to record all the results by drawing up a plan of the room to scale, on which the location of plumbing fixtures, furniture and other interior details is noted. For a more accurate calculation, it is better to convert all numbers into millimeters.
Methods for calculating tiles
There is no single universal calculation scheme. In each individual case, everything depends on the specific layout of the room, the standard sizes of the tiles, and the layout of the tiles in the bathroom is taken into account. And depending on this, the most suitable of the three calculation methods is chosen.
- Sketch of the project;
- Calculations using the formula;
- Layout and calculation of tiles in the bathroom using computer programs.
Important! It is worth considering that in case of errors in calculations, it can be problematic to purchase additional tiles, because different batches of the same collection often have visible differences in shades, ornament geometry and some other technical parameters.
Sketching and piece-by-piece calculation of tiles
The most reliable results can be obtained by sketching the project on paper. For these purposes, any regular notebook sheet in a square or on graph paper will be suitable. The room is drawn to scale, each wall and floor separately. Mark the location of the tiles based on their size and installation method. Tiles of various shades, decorative elements, if used, frieze are shaded with colored pencils for convenience. Such a project will allow you not only to imagine what the room will look like after finishing, but also to calculate the amount of material individually as accurately as possible.
Calculations using the formula
In this case, the amount of material is determined based on the size of the room and the material. Let's say you need to calculate the number of tiles to cover the floor standard bath. To do this, you need to know the total square footage of the bathroom, which is calculated using standard geometric formulas, for example: 1.73 × 1.73 = 3.46 m2, rounding the resulting number up, we get an area of 3.5 m2. Next, you need to find out the area of one floor tile: 0.335×0.335=0.112 m2. Next, we calculate how many whole tiles will be needed to cover the entire area: 3.5/0.112=31.2 pcs. We round the quantity to 32 and add 10% for defects and trimming, in the case of a diagonal layout - 15%. The total is 35 or 37 tiles, respectively.
This method is used if the layout of the tiles in the bathroom is standard, and the individual elements do not differ in size. At in non-standard ways laying, the number of tiles can be calculated only by sketching the project to scale. Or through special services, if the program for laying out tiles suggests the possibility of such placement of finishing elements. You can be more precise about calculating tiles.
For walls
Wall tiles
As a rule, wall decoration is done in two shades, which are separated by a border, so first you need to determine the height of each layer. At the same time, it is better not to trim the lower dark layer, that is, its height will be a multiple of the height of the tile. Depending on the size of the tiles, lay out 3-4 rows. The height of the border will vary depending on the height of the tiles used for this. The remaining height of the wall is a light layer.
The dark band is calculated. The perimeter of the bathroom is multiplied by the height of the dark layer and its area is determined. The resulting number is divided by the area of one dark tile and its quantity is determined. Add 10% for pruning, fighting and rejects.
Light tiles are calculated in a similar way. The area of the wall for a light finish is divided by the already known area of one tile and the amount of ceramics is obtained light color. Add 10%.
The border elements are counted. To do this, the perimeter of the room is divided by the length of the border element. From the resulting number, subtract the part that falls on the doorway. Results are always rounded up to a whole multiple of one or a half, since halves are also used, for example, at corners.
For floor
Depending on the layout and configuration of the room, choose the most convenient method.
Bathroom floor tiles
By total area. Find out the total floor area of the room, without subtracting the box and niche, and divide it by the area of one tile. This way they will know how many tiles will be needed to cover a given surface. 10% is added to the resulting number, which will be spent on trimming and insurance against defects or damage to the material. The figure is rounded up to a higher value. The error with this method of calculation can be quite significant.
On both sides. First, find out how many tiles will be laid along each wall.
To do this, the length of the wall is divided by the length of the side of one tile that corresponds to it. The same calculation is carried out on the other wall and side of the tile. Thus, it is determined how many tiles are laid in one row along one and the other wall. The resulting figures are multiplied by each other, a margin of 10% is added and the total amount is obtained.
If the layout of the floor tiles in the bathroom is made diagonally, the calculation is performed in the same way, but it is recommended to add not the standard 10%, but 15% as a reserve.
Online calculator
You can also use our online calculator To calculate tiles, this calculator allows you to calculate not only the quantity but the cost of tiles.
Computer programs.
Modern computer programs make tile counting simple and convenient, provided you work with them correctly.
Programs for calculating bathroom tiles
Services that help with calculations can be divided into two types: an online tile layout program and calculators for counting tiles. You can work in programs online or after installing them on your computer. Some of them are paid, but their functions and capabilities are significantly higher than those of free versions. The tile calculation program allows the user to perform a number of actions:
- Lay out the tiles in a 3D model and thereby create a semblance of finishing a bathroom in the future;
- Calculate quantity finishing material and tile adhesive consumption;
- In the programs, you can adjust trimming and select tiles from different collections.
Simplified versions for calculating tiles - calculators. These are small programs, usually online versions, that calculate material based on data entered by the user for already finished project. It is worth considering that using a calculator to calculate bathroom tiles is only possible if all finishing elements are the same size.
Calculation of the quantity of consumables
Tile tiles are usually laid on glue using a suture method, which means that for repairs you will need the adhesive mixture itself, grout, and installation crosses that will regulate the thickness of the seam; as a rule, you purchase only one package with a minimum quantity of 50 pieces. The consumption of a certain tile adhesive and the amount of grout are pre-calculated.
The consumption of tile adhesive is influenced by a number of factors, among which the most significant is the evenness of the base. Also, the thickness of the adhesive base increases depending on the size of the tile; the smaller it is, the smaller the layer of glue will hold it. For tiles use cement mixtures, dispersion adhesive or mixtures on epoxy based. They are applied with a notched trowel. Moreover, if its teeth are pointed, less glue will be required than when working with a spatula with square teeth.
In order to find out the approximate consumption of tile adhesive, multiply half the height of the tile by average consumption the selected adhesive mixture and the area to be covered.
The best way to calculate is to use online calculators. They provide the most accurate results based on data about the tile, the substrate, the tool, the working conditions and the selected adhesive.
Average material consumption using the example of Ceresit glue
Grout for joints
In order to calculate the required quantity, you need to know the volume of the space to be filled, but if the thickness of the seam is known, then difficulties arise in determining its depth. As a rule, it depends not only on the thickness of the tile, it is important to take into account the thickness of the adhesive mixture and what percentage of the grout will go under the tile. All these indicators are relative, so it will not be possible to accurately calculate the material. The amount of grout is taken based on its consumption indicated on the packaging and 10-15% is added.
You can also use our online calculator to calculate grout, which quite accurately calculates the material according to the specified parameters. The program algorithms calculate ideal values, so they recommend adding 10% to the result. (votes: 7
, average rating: 4,43
out of 5)
Typically tiles are sold in square meters. To order floor tiles, it is enough to know the square footage of the room: if your kitchen area is 10 square meters. meters, then you will need to order 10 m of tiles + a reserve for trimming and breaking (usually around 10 percent).
However, sometimes you want to imagine exactly how many tiles will go for each meter. If you just want to imagine this number in order to visualize the picture (how many tiles will go per meter: 4, 10 or 20 tiles), then this is very easy to do. If you need to count exact amount tiles in pieces, which you will need to buy to lay out a square meter in your room, then this is a little more complicated. (These two values may be slightly different, yes)
Let's start with the easy one: how many tiles per square meter(any meter, completely abstract)
Calculating the area of the tile
First you need to calculate the area of one tile in square meters. For this her length(in meters) needed multiply by width(in meters). It is better to multiply in meters rather than in centimeters, so as not to get confused with the conversion of square centimeters to square meters)
For example, let's take a tile measuring 20x20 cm. Since there are 100 centimeters in one meter, 20 cm is 0.2 meters (20/100 = 0.2). Multiply the length by the width 0.2m x 0.2m=0.04 sq.m. Thus, a 20x20 cm format tile has an area of 0.04 sq.m.
If the tile measures 30 cm by 60 cm, the calculation gives 0.3 m x 0.6 m = 0.18 m2. For a tile 12.5 cm x 120 cm, the area will be 0.125 m x 1.2 m = 0.15 m2.
Counting the number of tiles
Knowing the area of one tile, it is enough to divide 1 square meter by this area to get the number of tiles. For a 20x20 cm tile, the calculations will be: 1m2 / 0.04m2 = 25. Thus, there will be exactly 25 20x20 cm tiles per meter.
For a 30x60 cm tile the results will be 1/0.18 = 5.555(5). About five and a half tiles.
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Number of tiles per meter for popular sizes (with slight rounding)) Tile 10x10 cm - 100 tiles per square meter |
It is important to understand that this value is approximate, calculated. In reality, another number of tiles may be needed per meter. Let's see why.
Let's say our room measures one meter by one meter (that is, the same square meter of area), and the tiles measure 30x60 cm. According to preliminary calculations, we needed 5 and a half tiles, right? In reality, we may need 7 tiles
Why is this happening? Because in the calculations the entire area of the material is considered as a whole, as if we had poured it or laid it in tiny pieces. If desired, of course, the scraps from tiles 4, 5 and 6 can be used to cover the area of the seventh tile. This is quite enough, as calculations show. But the length of the remaining pieces is shorter than needed (they are 20 cm each), so it will all look questionable.
Bad news, we'll probably need eight tiles. We want the tile to look beautiful, small pieces are not very aesthetically pleasing, so we’ll align it in the center.
Well, you may decide that the whole problem is that we took a large tile of the wrong size (30x60 cm) for such a small area (1 square meter). Nobody does this, you have to take a small tile. Okay, let's take a 10x10 cm tile. What can happen to it? It would seem like nothing. Exactly 100 pieces of such tiles fit in a square meter (1/0.01=100).
Well, no.
The fact is that a square meter is not necessarily a square room measuring one meter by one meter. It could be narrow corridor measuring 2 meters by 50 cm. What's worse, it could be a passage with the exact dimensions of 57 cm by 1.76 m. Multiple 10 sizes will instantly give us waste. As a result, the area will require 108 tiles. 18 horizontally, 6 vertically.
Of course, as the footage increases, the percentage of extra tiles usually decreases. In any case, before calculating the number of tiles, decide for yourself for what purposes you need it: just for guidance or for ordering. If you are ordering and you want to count the number of tiles accurate to the piece, you cannot divide the area of the room by the area of the tile. You need to either draw and look, or divide the length of the room by the length of the tiles, the width by the width, and decide how you can combine the remains.
See also articles
When purchasing materials for repairs, you need to know exactly how much of a particular material is needed. If you buy more, you will waste money, but if you buy less, you will have to pause the repair to buy the required quantity. Some materials are produced in limited editions, and there is a chance that you simply won’t find the desired pattern or texture. Purchasing tiles is no exception: an accurate calculation will allow you to complete the work on time and without additional costs.
Peculiarities
Calculating the required number of tiled squares is not a simple process. It is necessary to carefully make all measurements and calculations, depending on the characteristics of the room, the laying method and the size of the tiles themselves. You should not count on the fact that you can always buy more tiles, because even different batches of the same type may differ in shade or texture.
To ensure that there are enough tiles to cover the entire surface, you should immediately purchase a little more, than it turned out according to the calculation, since in some areas of the room the tiles need to be joined and cut, adjusting the ornament.
When calculating, you need to take into account that there is no seam left between the floor tiles and the wall material so that unevenness is not visible.
What is important to consider when calculating?
To begin with, calculate the total surface area on which tiles of one type will be laid. If it is a floor or ceiling, you need to multiply the width by the length, but if it is walls, then you need to multiply their length by the height. Measurements are carried out using a regular tape measure, the data is recorded on a piece of paper. To prevent mistakes or identify curvature, you can take several measurements on different sections of the wall or floor. It is better to calculate the area in square meters, and then divide it by the area of one ceramic tiles, the dimensions of which are also converted to meters. Thus it will turn out minimal amount material without taking into account trimming, matching patterns or taking into account defects.
Laying tiles diagonally allows you to hide even significant defects in the floor and walls, however, when calculating installation in this way, it is necessary to include a larger percentage for trimmings and waste: 15-17%, depending on whether it is necessary to adjust the pattern on the tile. A particular option for diagonal placement of tiles is the herringbone pattern. There are two options for this installation: in one, the first tile is laid parallel to the walls and laid diagonally; in another, the first tile goes at an angle and the laying lies perpendicular to the walls.
In cases of installation paving slabs It is best to allow 10 percent for defects during transportation and installation. This tile is quite fragile and easily breaks into pieces. It is also much more difficult to calculate the exact dimensions of the area of the driveway or path to the gazebo, because this is not a square room, clearly limited by walls, but an object complex shape.
Simultaneously with calculating the amount of ceramics, you can also find out the required amount of grout for tile joints– fugues. You can calculate the approximate amount of fugue, like tiles, using special online calculators. You need to enter the already calculated data on the area, and the program itself will calculate everything, taking into account the percentage of defects. You can use various calculation formulas, according to which the average fugue consumption is 1.6 kg/m3. Manufacturers often write the average consumption of tile adhesive and grout directly on the packaging.
This calculation can also be used, but for this you will need to make it directly in the store.
How to calculate?
The easiest way to calculate the number of tiles is, of course, to use online calculators to calculate. However, even if you use such a program, it is necessary to correctly measure all the necessary quantities, and the Internet may not be at hand, so it is better to know and be able to use several types of calculations.
Standard counting
The most simple option finishing is normal square tiles the same color or with an incompatible pattern (for example, marble or wood). When laying such material, you can start working from any corner and do not have to select the position of each tile before applying the adhesive.
Such ceramics can be cut from all sides and any trimmings can be used.
- Step 1. The length of the walls is measured and the total length of the perimeter is calculated. If the room has a complex shape, it is necessary to take into account all the projections and niches.
- Step 2. The height is measured, all obtained values are rounded to the nearest centimeter.
- Step 3. The area of windows and doors is subtracted from the resulting value, since these surfaces are not tiled. If tiles are to be laid on the ceiling, the ceiling area is calculated.
- Step 4. If the decorative bathroom screen is also decorated with tiles, then its area also needs to be calculated. And if the bathtub is installed near a wall, then surfaces that will not be visible after installation can be avoided with tiles in order to save money.
- Step 5. Set the percentage of defects and waste during installation. It will be enough to increase the resulting figure by 10 percent to take into account all the factors that may affect the consumption of material: the work of a beginner or a professional, the presence of pipes and thresholds, a checkerboard or diagonal layout.
Example: there is a room of the following dimensions:
- 2 m – length of one wall;
- 2.5 m – length of the second wall;
- 2.8 m – ceiling height;
- door 2 m high and 0.8 m wide;
- window 0.8 m long and 0.8 m high.
Thus, the area of the floor and all four walls is: 2*2.5 + 2*2*2.8 + 2*2.5*2.8 = 30.2 m2.
The window area is 0.8 * 0.8 = 0.64 m2, and the door area is 2 * 0.8 = 1.6 m2.
Now the area of one door and one window is subtracted from the resulting number, which are 1.6 m2 and 0.64 m2, respectively: 30.2–1.6–0.64 = 27.96 m2. The decorative bathroom screen will not be decorated with tiles, so its area is not needed. If we add another 10 percent to this number, we get a finished area of 30.76 m2.
The area of one square of medium-sized tiles (30x30 cm) is 0.09 m2. If you divide the resulting surface area by the area of one square, you get 342 whole tiles. And depending on how many tiles are in one package, the number of packages that will be needed to cover the floor and walls of a given room is calculated.
Customized according to pattern
If the bathroom uses tiles with a border insert, or tiles of different sizes and materials, then make a calculation in a simple way will not work. First, you also need to calculate the square footage of the walls and floors minus the area of windows and doors. Then it is necessary to lay out all the elements, alternating in rows from bottom to top, in one even column over the entire height of the finishing area.
We measure the width of the resulting column and divide the perimeter by the resulting value, thus obtaining the number of such columns in a complete installation. Next, we determine the total area of tiles of each type in such a column and multiply by the number of columns obtained in the previous step. And at the end we add 15 percent for defects and adjustment of the drawing. This method is not very accurate, because it does not take into account that at the locations of windows and doors, the columns will be incomplete and an unequal number will be excluded from them various types tiles
Another calculation option is more accurate. It is necessary to immediately calculate the entire area on which one type of material will be laid. The result obtained is divided by the area of one tile the right size and the result is the number of tiles that will cover this area.
For this option of calculating the number of tiles, it will be enough to take into account 10 percent for fit and defects.
Various product options
There are tiles of quite complex shapes in the form of flowers and various patterns. It is almost impossible to calculate the area of one such tile due to the combination of smooth lines with sharp corners and cutouts. Sometimes the manufacturer indicates on the packaging approximately how much area one such tile covers, but often such information is simply not available. In order not to buy such tiles “by eye”, you should draw an exact plan of the room in which the installation will be carried out. Then carefully draw one such tile on the appropriate scale, after which you can draw the complete cladding according to the scheme that was originally chosen.
If only one color is used, then all that remains is to simply count the resulting number of elements. If several colors are used, then you will have to color the picture with the corresponding colors and count how many specific tiles of one color or another you will get. Then you need to add 10-15 percent for defects and adjustments.
This method is also used when using decor that differs in size from the main tile.
It is necessary to first apply decorative elements to the diagram, and then determine how many main tiles will fit at the intersection with them, and subtract them from the total volume.
A separate calculation complexity appears when using beveled tiles. Bevels are bevels located around the perimeter of the tile. Such products look more expressive and voluminous than ordinary flat squares. Bevels look especially good on tiles that have a smooth mirror surface. A wall lined with such tiles will visually expand small room and evenly diffuse the light around the perimeter. The difficulty is that this type tiles cannot be cut so as not to spoil them appearance. The floor and corners of the room must be perfectly flat, and the size of the material must be selected so that only the entire number of required squares of tiles is obtained.
When counting tiles individually, it is necessary to count all cut tiles in the corners or along the walls as whole. Otherwise, there is an increased risk that the planned material will not be enough to cover the surface.
Before laying tiles, it is necessary to level the surface of the walls, floor and ceiling, if tiles will also be laid on it. For this purpose, various self-leveling mixtures and plaster solutions are used. First, all leveling work is carried out, all wet surfaces are dried, and only then the area is measured.
For more savings or creation original design In the bathroom, only the “wet area” can be tiled. In places where water is in constant contact with the walls and floor, tiles are laid, and the rest of the surface is treated with moisture-resistant paint or mounted plastic panels. In this case, for the calculation it is necessary to take only the area of this “wet zone”.
If the area of one square of tile is not yet known, you can simply calculate the surface area that will be tiled. Most often in stores, tiles are packaged in packs covering an area of 0.5 m2 or 1 m2, so it will not be difficult to calculate how many packages are needed.
