The useful area of ​​the ondulin leaf. Ondulin: sheet size and how to calculate the material

It is best to correctly calculate the required amount of ondulin on the roof with the help of experienced and qualified roofers. You can do this yourself. To do this, you need to take into account the size of the material, as well as the parameters of the roof. Also, during the installation work, you will need a certain amount of fastening material.

Technical characteristics of ondulin

The dimensions of ondulin are regulated by the existing GOSTs, which the manufacturers adhere to. The maximum deviation from the specified dimensions is no more than 3 mm. The production uses a traditional technology, in which cellulose fiber is impregnated with bitumen and pressed at high temperatures.

  • Be sure to fix the sheets well. They may not withstand the wind load, and they will simply be ripped off the building.
  • The maximum permissible installation temperature is about 30 degrees. It is prohibited to carry out installation work when this temperature regime is exceeded.
  • The sheet must be laid loosely and fixed without stretching, otherwise waves will appear as a result.
  • It is worth purchasing products from time-tested companies. The price of an ondulin (standard sheet size) will be about 400 rubles. per sheet, nails, packing (100 pcs.) - 120 rubles

Important! Ondulin can withstand about 100 freeze-thaw cycles. The dimensions of the sheets are specially selected in such a way as to facilitate the installation of the product.

Factory products are guaranteed to withstand about 15 years of operation. But high quality roofing material can last much longer. Therefore, it is not worth skimping when choosing a soft roof, relatively small overpayments can increase the service life by 5 or more years.

And the last thing. A well-known manufacturer values ​​its reputation and therefore carefully controls the quality of products for compliance with standards and GOSTs. As a result, all stated sheet sizes must strictly correspond to the actual ones. One of the ways to check product quality is to simply take a tape measure and measure the length and width of the sheet, deviations can be 1-2 mm.

Video about the installation of ondulin

A master class on the installation of ondulin and accessories will help you properly lay this material on the roof.

The use of sheet material began as early as 1944 after it was invented in France. Today, the shape and size of ondulin can be very diverse, which allows you to create new interesting construction projects. Professional craftsmen recommend purchasing materials made in one series in order to successfully fit each product. In this article we will talk about the features of an ondulin roof, its characteristics and parameters.

Ondulin sheet is widely used in modern construction. It can be found both in projects of private houses and industrial facilities. Also, the material has found its application in the construction of light structures, such as gazebos, awnings, kiosks and pavilions. The small weight of the products allows you to carry out repair work on old roofing. Thanks to its lightness, it will be possible to avoid unnecessary stress on the base of the building.

For your information! The new flooring will create a load of about 3 kg per sq. meter.

The material is produced using a simple technology, according to which cellulose fiber is pressed into sheets of a wave shape resembling ordinary slate. After that, bituminous impregnation is performed, and the upper surface of the sheet is covered with resin and mineral pigment. The small size of ondulin in thickness greatly simplifies the installation process, since the material is very easy to transport, move and lay. Products can be cut and can be bent, which allows them to be used on curved planes. The area of ​​one standard sheet is 1.9 sq. m. Among the positive characteristics of ondulin, the following properties should be distinguished:

  • Long service life. Manufacturers indicate 15 years in the warranty leaflet, however, with proper care of the material, it will last 50 years without losing its quality;
  • Aesthetics and attractiveness of products. A wide range is represented by a huge variety of colors and shapes;
  • Possesses excellent resistance to atmospheric precipitation. Such a useful characteristic will help protect the building from strong wind, rain and temperature extremes;
  • Frost resistance. Euroslate can withstand 25 thawing and freezing cycles;
  • Withstands loads up to 300 kg per sq. m .;
  • The material is resistant to biological and chemical influences, that is, it is not afraid of contact with acids, alkalis and oils, the formation of fungi is not characteristic;
  • Simplicity of the installation process;
  • The ondulin cover is very easy to repair;
  • Products are resistant to mechanical damage, water, frost, heating;
  • Such structures are characterized by excellent sound insulation.

Attention! The material differs from ordinary slate in the absence of harmful impurities, which makes it safe for the health of people and living beings.

Standard dimensions for roof ondulin sheet

For the production of ondulin, there are standards that are distributed to other countries under a French license. According to the prescribed norms, the dimensions of the ondulin sheet for the roof are as follows: the length of one product should be 2 thousand mm, the width - 950 mm. In this case, the thickness should be 3 mm, and the wave height should not exceed 3.6 cm.

Attention! The acceptable error is considered to be +/- 5 mm for width, + 10 / -3 for length. The wave height of the ondulin can be 2 mm more or less.

Each ondulin product consists of 10 waves, which must be taken into account when calculating the material consumption when covering the roof. If laying horizontally, then the width of the overlap should be equal to one wave. This approach will improve the strength and tightness of the flooring. When laying the roof vertically, the angle of inclination should be taken into account. So, if the angle of the slope is more than 15 degrees, then the overlap should not be less than 10-15 cm. Thus, the useful area of ​​one work item is 1.6 square meters. m.

Important! If ondulin is laid on roofs with a slope of less than 15 degrees, then the overlap on the sides should cover two waves, and the vertical row should be about 20 cm.Thus, a special calculation of the useful area of ​​the sheet is made.

Before you go for the purchase of material, you should find out how many sheets you need for the roof of the building. This can be found out using special calculations. In the next section, we will find out how to determine the optimal amount of ondulin for a specific roof.

Methods for calculating the amount of material

The size of the sheet of ondulin may differ, so it is so important to know not only the parameters of the material, but also the required amount, so that you do not have to postpone work due to the lack of sheets. The easiest way to calculate is for gable roofs with an angle greater than 15 degrees. In such structures, the slopes form rectangles, and the dimensions of the overlaps do not go beyond the standard frames. The calculation is performed as follows:

  • We calculate the total area of ​​the roof;
  • We divide the resulting amount by the usable area of ​​one ondulin (by 1.6 sq. M.).

To perform calculations of buildings of a more complex type, they should be made for individual sections. We divide the entire area into rectangular and triangular zones, and determine the amount of material for each of them. Then we summarize the data obtained and add 5% to waste, which cannot be dispensed with when performing the installation process. It should be noted that when performing the task, the presence of windows in the roof space should be taken into account. It is also necessary to take into account the installation of all additional elements, such as a valley, a ventilation pipe, an apron, a gutter, etc.

Attention! The number of all additional roofing elements significantly affects the material consumption, therefore, when calculating the number of sheets, they cannot be ignored.

If you approach the calculations wisely, taking into account the dimensions of the ondulin sheet and additional components, you can avoid most of the problems during installation. You will be able to save on the extra costs of shipping the missing material. Also, thanks to the accuracy of the calculations, it will be possible to complete the work on schedule. In addition, an additional purchase may have differences not only in color, but also in shape, which can violate the strength of the structure and the geometry of the roof pattern.

Estimated material cost

Not only the size and weight of the ondulin sheet may differ, but also its cost. It depends on the manufacturer and manufacturing features. In most cases, it is the price that is the criterion for choosing a material for the roof, because everyone dreams of spending less money and at the same time getting a high-quality coating. The price policy is influenced by the color of the product:

  • Green and black coatings cost $ 8.5-9 on average. for a sheet of ondulin (in rubles it will be from 450-480);
  • Ondulin red or brown - 7.5 - 8 dollars (approximately 430 rubles);
  • Slate roofing material - from 6 to 6.6 dollars per one ondulin product (an average of 350 rubles).

In addition to the basic material for roofing work, you will need additional elements. Their cost:

  • The skate can be purchased from 4, 5 to 4, 8 dollars for one unit of goods;
  • Endova - from $ 3, 7 to $ 4.3 per piece;
  • A special lining mat, which is also called onduflesh, costs an average of 17 - 19 dollars;
  • One gable profile will cost you from 4, 5 to 4, 8 dollars.

So we got acquainted with the standard dimensions of ondulin, which is most often used in the construction of roofing structures.

Ondulin, or Euroslate, is one of the most reliable roofing materials. Let's take a closer look, euro slate - what it is, what are the advantages of this material. During the design activities, knowledge of the standard size of the ondulin will be required: this will make it possible to avoid shortages or surpluses during roofing.

Features of the manufacture of ondulin

Let's find out what ondulin consists of, what materials are used in production. Onduline sheets got their name from the French company "Onduline", which owns a patent for this product. Ondulin material consists exclusively of safe and environmentally friendly components, comparing favorably in this respect from traditional asbestos-cement slate.

For the manufacture of the material, pure cellulose is used: petroleum bitumen and ether resins are used for its impregnation. Not so long ago, the Italian-French development "onduville" appeared. Having a composition similar to ondulin, this new material imitates ceramic tiles.


For the production of ondulin, the following operations are used:

  1. Pulp cleaning... Debris and impurities are removed from its composition. Then the substance is soaked in water with pigments and modifiers diluted in it. The resulting raw material is called "pulp".
  2. Pulp processing... The technical characteristics of ondulin provide for processing on a special conveyor, where the material is pressed to a thickness of 3 mm. Having dried and hardened, the pulp acquires a specific waviness.
  3. Bitumen impregnation... A cellulosic base with an area of ​​1.9 m2 is impregnated with petroleum bitumen.
  4. Stacking finished material... Shrink wrap is used as packaging, equipped with a label and accompanying information.

Overlap Sheet Size - Usable Width

It is very convenient that ondulin is always available in standard sizes. If deviations are found in the width or length of corrugated sheets, it can be concluded that most likely we are talking about a fake of interrogative quality. Having information on the useful size of the ondulin sheet on hand, it is quite simple to calculate the final amount of coverage.


Standard size of the sheet of ondulin:

  • The working width of the ondulin is 950 mm. A very convenient size for small to medium sized roofs.
  • Length - 2000 mm. The round number makes material calculation very easy.
  • Thickness - 3 mm. Small deviations for this parameter are allowed.
  • Profile wave height - 36 mm.
  • The weight of one sheet is 6 kg. One square meter - 4 kg.
  • Sheet area - 1.9 m2.
  • Useful area of ​​smart ondulin is 1.6 m2. In this case, vertical and horizontal overlaps are taken into account.


Armed with information about the total area of ​​roof slopes, it does not take significant effort to count the number of ondulin sheets. All that is needed is to divide the roof area by the useful area of ​​one sheet (1.6). To compensate for circumcision, 15% is added to the amount received. Also, do not forget about adjusting the size of the ondulin sheet, taking into account the overlap: this is affected by the slope angle of the slopes. In this case, the useful width of the ondulin will differ from the working one. When calculating the useful width of the ondulin sheet, the size of the side overlap is subtracted from the standard indicator.

Strengths of Ondulin

Initially, the function of ondulin sheets was limited exclusively to the implementation of quick repairs and sealing leaks on slate, tile and metal roofs. In the course of application, practice has shown that euro slate is quite suitable as an independent roofing material.


This was facilitated by the following qualities:

  1. Light weight... It is no exaggeration to say that ondulin is the lightest material for the roof. This allows it to be laid directly on the old slate or profiled sheet without dismantling.
  2. Duration of service... Onduline roofing is able to painlessly withstand up to 100 frosts and defrosts, which allows the manufacturer to give a 25-year warranty. As practice shows, euro slate serves for at least 50 years.
  3. Good strength... The presence of a corrugated profile allows the material to have a bearing capacity of 650 kg / m2. He is not afraid of snow loads up to 300 kg / m2.
  4. Hydrophobicity... Ondulin does not allow water to pass through and almost does not absorb, which makes it possible to guarantee reliable protection of the rafter structure from getting wet.
  5. Soundproofing... The surface of the euro-slate has sound-absorbing characteristics. On such a roof, rain, hail or strong winds are almost inaudible.

When choosing ondulin as a roof covering, it is important to take into account the fact that this material is flammable. The manufacturer does not recommend exceeding the temperature regime of + 110 degrees during operation, otherwise the sheets will begin to deform. Based on this, Euroslate should not be used on saunas, gazebos with barbecues, dwellings with fireplaces and solid fuel stoves.

The sheet material, developed by the French company ONDULINE, has been among the popular materials for arranging roofing for more than half a century. Today, ondulin is produced in many countries of the world, including Russia. Due to the peculiarities of the manufacturing technology of the material, the color shades of different batches may differ slightly. To make the appearance of the roof aesthetically pleasing, it is recommended to use roofing material from the same batch, having previously accurately calculated the required number of sheets.

Ondulin characteristics

Ondulin is actively used in the construction of capital objects - residential, commercial and industrial buildings, in the construction of light structures - pavilions, kiosks, sheds, gazebos. Due to its low weight, this sheet material is ideal for repairing old roofs: it can be mounted on top of flat, old roof coverings without fear of unnecessary stress on the foundation of the structure. The approximate load of the new flooring will be about 3 kg per 1 m 2.

The manufacturing technology of the material is quite simple: cellulose fiber is pressed into corrugated sheets resembling traditional slate in shape. Then the base is impregnated with bitumen, the top layer of the material is covered with a layer of mineral pigment and hardened resins. The small thickness of the ondulin makes it convenient to install - the sheets can be easily lifted onto the roof, cut, used for laying on curved surfaces, since the material bends both in the longitudinal and transverse directions. The total area of ​​a standard sheet is 1.9 m 2.

The advantages of ondulin include:

  • long service life (guarantee - 15 years, real service life - 50 years);
  • attractive appearance;
  • resistance to moisture and atmospheric influences (squall wind up to 200 km / h, temperature from -40 to + 80 ° С);
  • high coefficient of noise absorption;
  • easy installation;
  • resistance to biological destruction, acids, alkalis, oils;
  • the ability to withstand a load of up to 300 kg / m 2.

Ondulin, unlike standard slate, does not contain harmful substances and does not have a negative effect on health.

Dimensions of ondulin

On the Russian market, ondulin, manufactured under the license of a French company, usually goes on sale. The length of a standard sheet is 2000 mm, the width is 950 mm, the ondulin thickness is 3 mm, and the wave height is 36 mm. The permissible error can be + 10 / -3 mm in length, + 5 / -5 mm in width, + 2 / -2 mm in wave height.

Each sheet of ondulin has 10 waves with a width of about 95 mm, which must be taken into account when calculating the material for roofing. When installing a horizontal row, it is necessary to overlap one wave wide in order to ensure the strength and tightness of the flooring. The vertical overlap when laying ondulin on the roof, the slope of which exceeds 15 degrees, must be at least 100–150 mm. As a result, the useful area of ​​one sheet element reaches 1.60–1.64 m 2.

If ondulin is laid on a roof with a low slope, the side overlap of the sheet should be 2 waves, and the vertical overlap is about 200 mm, which requires a special calculation of the useful area of ​​the sheet material.

Before purchasing ondulin, it is important to calculate the roof, taking into account the useful area of ​​the sheet material, so that in the future you do not have to buy products from another batch.

Principles for calculating the roof covering

The simplest in calculations are gable roofs with an angle of inclination of 15 degrees, each slope of which is a rectangle, and the overlap parameters are standard. In this case, it is required to calculate the area of ​​the roof and divide it by the useful area of ​​one sheet of ondulin - 1.6 m 2.

If you need to calculate a complex roof, then you need to divide it into separate planes - rectangles and triangles, calculate the coverage area for each plane separately and add up, adding 5% for waste during installation.

When calculating materials for the roof, one should also take into account the presence of windows in the plane of the roof, the use of elements such as a valley, a ridge, covering aprons, a cornice gutter, roof ventilation elements and other components of the roofing system. Their presence and number affects the calculation of ondulin sheets.

The need for accurate calculations

Obviously, in comparison with the total area of ​​a standard sheet element, a difference of approximately 0.3 m 2 is collected from each sheet of ondulin, and if this is not taken into account, the purchased material may not be enough for the installation of the entire coating.

A competent approach to calculating an ondulin roof, taking into account the size of sheet elements, will avoid problems associated with the acquisition and delivery of missing material, which entails not only additional transport costs, but also disrupts the work schedule. In addition, a new batch of ondulin may differ in shade from the existing one, which will worsen the overall appearance of the roof.

Ondulin: sheet dimensions, usable area, width of ondulin for the roof


Dimensions of one sheet of ondulin and its technical characteristics. The useful area and the working size of the ondulin sheets for the correct calculation of the area of ​​the roof to be covered.

Dimensions of the Ondulin sheet and its overall characteristics

No one goes for building materials at random - this is, at least, unreasonable. Before buying, we always calculate how much you need. So, for example, when choosing ondulin for the roof, the size of the sheet should be clarified in advance. After taking an insufficient amount of material, you can, when buying in addition, be very upset when you see that the shade from the new batch is not at all the same, well, and you don't want to overpay either. Therefore, in this article we propose to figure out what the sizes of Ondulin and its additional elements are, as well as how to calculate the required amount of this material for the roof of the house.

We measure the sheet of ondulin

French three-millimeter roof covering called ondulin (or euro-slate) is based on organic cellulose fibers. For durability and color retention, the material is impregnated with bitumen with special additives.

In the process of making standard sheets with ten waves, the following deviations are allowed:

  • across the width of the sheet: from -5 to +5 millimeters;
  • along the length of the sheet: from -3 to +10 millimeters;
  • by wave height: from -2 to +2 millimeters.

And now the parameters of the Euroslate sheet themselves:

  • Sheet width - 0.95 meters;
  • sheet length - 2 meters;
  • wave crest height - 3.6 centimeters
  • sheet thickness - 0.3 centimeters;
  • leaf weight - 6 kilograms.

During installation, you will also need fasteners with accessories. In addition to special nails, eaves, valleys, gables, gutters and fillers for eaves, windows and roof fans will be needed. Be sure to take them all into account.

Dimensions of additional elements Ondulin

Determine the required amount of roofing

Usually, these calculations are undertaken by the company that will install the ondulin roof. She usually sells it. However, if you want to cover the roof yourself with a euro slate, then to calculate its number of ondulin sizes and school knowledge of mathematics will be quite enough. You just need to represent the entire roof surface in the form of the simplest geometric shapes - triangles, rectangles, squares. Easily calculating the area of ​​each, add them all - this is the area of ​​the roof.

And now the most important thing is to avoid the main mistake by choosing “dirty” ones instead of “clean” sizes. Otherwise, not taking into account the margin required to overlap the sheets of ondulin. It is necessary, otherwise the quality of the roof will suffer. Therefore, a simple multiplication of length and width, giving a sheet area of ​​1.92 square meters, is not suitable for determining material consumption. After all, about 0.3 square meters from this sheet will go to the overlap.

Now more accurate calculations. When the roof is laid, the sheets of ondulin overlap not only in the longitudinal, but also in the transverse direction. The overlap will be from 10 to 15 centimeters in length, and one wave (9.6 centimeters) in width. We get "clean" sizes:

With these dimensions of the ondulin sheet, its useful area will turn out to be less - from 1.6 to 1.64 square meters. And one more thing: do not forget that the roof will have to be cut along the edge, and the material will need 10 percent more. Start from these numbers when purchasing a roof.

Ondulin - dimensions of the sheet and additional elements


When choosing and buying a floor covering like Ondulin, you need to know the dimensions of its sheet.

Dimensions of the sheet of ondulin and its price

Roofing material ondulin (euro slate) belongs to the category of soft roofing. Sheets of this material are made from organic fibers impregnated with bitumen at high pressure and temperature.

The outer side of ondulin is covered with dyes and a special resin.

Thanks to this, the material acquires an attractive appearance and additional strength.

Benefits of ondulin

This roofing material has the following advantages:

  • good sound absorption;
  • high strength;
  • simplicity and ease of installation;
  • does not contain asbestos;
  • ease of care;
  • low price;
  • condensation is almost completely absent.

How much does one sheet weigh?

One of the main advantages of ondulin is its low weight. One sheet of ondulin, which has 10 waves, weighs 6.5 kg. For comparison, one square meter of ceramic tiles is approximately 40 kg. Due to this, the process of laying the material is greatly simplified. Even one worker without a partner is capable of lifting the sheets and installing them. Ondulin sheets are lightweight and do not create significant pressure on the roof frame. Therefore, it does not need to be strengthened.

Dimensions of the sheet of ondulin

A standard-sized ondulin sheet is 200 centimeters long and 96 centimeters wide. The thickness of the roofing material is three millimeters. However, at the same time, ondulin is not inferior in its rigidity to metal tiles.

photo of ondulin sheets

The wave height of the leaf is 36 millimeters. Also, quite recently, ondulin SMART appeared on the building materials market, the length of which is five centimeters less.

Ondulin can withstand a load of up to 960 kg / s per 1 sq. m. of roofing. Most often in such cases, only the rafter system and the roof lathing are destroyed.

Material strength

Wave Ondulin has a fairly high strength. The standard sheet is able to withstand pressures of more than 1800 kPa. This is enough to withstand a layer of snow during the winter months, as well as the weight of several workers.

Heat resistance of material

According to the manufacturers, the euro slate does not lose its shape and characteristics at temperatures up to 110 degrees Celsius. But not all consumers agree with this. Many people argue that the edges of the roofing material melt in extreme heat. It also creates a special smell.

Noise insulation of euro slate

The ondulin coating absorbs noise quite well, the value of which does not exceed 40 dB. No noise will be heard during rain. It should be noted that the parameters of this material may vary depending on the country of origin.

Price of one sheet

The cost of one roofing sheet is 200-400 rubles. Ridge elements cost 230 rubles, valleys - about 200 rubles, gable profile - from 230 to 250 rubles, cornice filler - from 30 to 50 rubles. The cost of the Ondufshesh lining carpet is in the range from 800 to 900 rubles.

Calculation of the amount of ondulin on the roof

The main mistake when calculating the amount of ondulin on the roof is taking into account the real area of ​​the roofing sheets instead of the useful one. The real area of ​​the ondulin leaf is 1.9 sq. m. However, the useful area of ​​the sheet with a roof inclination of 15 degrees is 1.6 sq. m. This difference arises from the fact that ondulin is laid with an overlap in width and length.

Calculation of ondulin for a roof of complex shape

If the roof has a complex configuration, the material is calculated differently. To do this, it is necessary to divide the roofing surface into sections, calculate their areas separately, and then add the areas.

The resulting value will be the total roof area. Next, you need to calculate the number of sheets using the above formula. It is better to buy roofing material with a small margin. The number of nails for one sheet of ondulin for the roof is 20 pieces, for the tong - 5 pieces, for the ridge of the roof - 20 pieces.

Installation features

When choosing the pitch of the lathing for ondulin, one should be guided by the angle of inclination of the roof. If the slope does not exceed 10 degrees, then the sheets of ondulin should be fixed on a solid crate made of OSB-boards or plywood.

The overlap in width is 2 waves, and in length - 30 centimeters. If the slope of the roof is 10-15 degrees, then their boards or beams are made of the crate.

In this case, the step of the lathing should be from 40 to 50 centimeters. The overlap is made in width in one wave, and in length - in 20 centimeters. If the slope of the roof slopes is more than 15 degrees, then the lathing step should be 60 centimeters. The overlap of the roofing sheets in width is made in one wave, and along the length - 17 centimeters.

Installation of sheets

The first step is to mount the cornice bar. Next, the first row of ondulin sheets is laid along the eaves overhang. Installation of the first sheet is carried out end-to-end with the gable overhang. Also, the sheet should extend beyond the eaves of the roof by at least 5 cm.

Each sheet of ondulin should be fastened with 20 nails. First of all, the corners of the sheet are fixed. Next, the lower edge of the ondulin is fixed in each wave. The top and middle of the roofing sheet is fixed in a checkerboard pattern through one wave.

After laying the first row with the required overlap, proceed to the installation of the second strip of material in the same way. It should be noted that even rows (second, fourth, sixth, etc.) must be started from half of the sheet.

Installation of the valley and ridge element

At the next stage, a roofing ridge is installed. It is mounted at the junction of two roof slopes. The ridge element is fastened with nails (in each wave of the euro slate).

Endows are an element of complex-shaped roofs. They are installed at the junction of two roof slopes in the inner corner. Before installing the valley, it is necessary to lay a waterproofing carpet. The valley starts from the bottom up. In this case, it is necessary to observe an overlap of elements of 10-15 centimeters. The amount of overlap should be selected depending on the slope of the roof slopes.

To fix the gutters, I use special clamps nailed to the roof lathing. It is not recommended to nail through the valleys.

Ondulin sheets are laid with an overlap on the grooves and cut off. This is done in such a way that the distance from the center of the valley to the edges is 5 cm on both sides. A filler is placed under the sheets of ondulin in advance. Euroslate should be fixed in each wave.

When performing installation work, certain rules must be observed:

  • the laying of the material should be carried out at a temperature from -5 to +30 degrees Celsius;
  • it is necessary to control the horizontal installation of roofing sheets;
  • to cut ondulin, you should use a hacksaw or an electric jigsaw;
  • you should not stretch ondulin, as its structure may be damaged.

Ondulin: sizes, photo, price per sheet


A standard-sized ondulin sheet is 200 centimeters long and 96 centimeters wide. The thickness of the roofing material is 3 mm.

Ondulin is a popular material for the construction and repair of the roof of various objects, both industrial and residential. Sometimes it is called simply euro-slate. Among the positive features, a wide color gamut, a convenient ondulin leaf size, and an attractive appearance are distinguished. The ease of installation and durability of the service allows the material to be used for the arrangement of roofs and commercial facilities. For more than half a century, this building material has been in great demand for the arrangement of the roof, its repair and reconstruction.

When planning the arrangement of the roof, the question arises, how much material is needed. It often happens that in the middle of the construction process you have to buy the missing ondulin. To exclude such a situation, it is worth knowing in advance the size of the ondulin sheet. The calculation of the amount of material required is carried out taking into account possible problems in construction. If you omit this simple recommendation, you may face the fact that the ondulin of the required size or color will not be available.

The main advantages of the coating

The weight of each sheet of ondulin for the roof reaches 3 kg per square meter. This allows the coating to be laid on old roofing material, eliminating the need for classic installation. The French manufacturer gives a 15-year warranty for the product. However, ondulin usually lasts much longer - up to 50 years.

A distinctive feature is the absence of harmful or toxic substances in the composition. Among the components, only clean and safe ones are distinguished, which do not harm health. These include purified cellulose, which is additionally impregnated with essential oils, petroleum bitumen, modifiers and natural pigments to obtain color.

The technology for the production of roof material is quite simple. The first stage is the cleaning of cellulose from impurities and debris. After that, it is impregnated with modifiers with pigments, allowing you to obtain the desired shade. The result is a pulp, which is a moist substance. The next step is pulp pressing and drying. As a result, ondulin acquires a characteristic wavy surface.

Additionally, the obtained cellulose base is impregnated with petroleum bitumen on both sides. The final stage is the packaging of the material in a special shrink film. Each package contains a label with the required information, including the dimensions of the ondulin. At the same time, the useful area of ​​ondulin reaches 1.9 square meters.

Among the advantages of sheets of material for the roof, the following should also be highlighted:

  1. Resistant to any weather conditions. The sheet can easily withstand temperatures from -40 to +80 degrees, as well as wind speeds of up to 200 kilometers per hour.
  2. Optimal sound absorption coefficient.
  3. Ability to withstand an average load of 300 kilograms per square meter.
  4. Resistant to biological degradation, including exposure to oils, alkalis and acids.
  5. Aesthetic appearance.
  6. An impressive service life of ondulin.
  7. Simplicity of installation work and the availability of independent execution.

Variety of material sizes

One of the additional advantages of the roof material is that the size of the ondulin is standardized. This eliminates many purchasing hassles and makes calculating the required quantity extremely simple. Knowing the size, it is not difficult to calculate the required number of sheets for your own roof.

It should be understood that the standard size of the ondulin sheet is also a quality guarantee. If you see a product in a store with significant differences in width or length, most likely this is a fake. It is best to refuse such material and choose a standardized option.

The dimensions themselves are as follows:

  1. The length of the roof sheet reaches 2000 mm. This was done specifically for the convenience of performing calculations.
  2. The width of the material reaches 950 mm. It is this size that is considered the most convenient for organizing a roof of any area.
  3. The sheet thickness is 3 mm. Moreover, this indicator may have small errors both upward and downward in thickness. A sheet with errors will not be considered a marriage.
  4. The area of ​​one sheet is 1.9 square meters.
  5. The useful area of ​​one sheet is 1.6 square meters, taking into account vertical or horizontal overlaps.
  6. The weight of an ondulin leaf reaches 6 kilograms.
  7. The profile wave height is 36 mm. Each sheet contains 10 waves with a step of 95 mm.

The calculation of the required number of sheets for the roof should be taking into account the transverse and longitudinal overlap. If you omit this, the purchased quantity is most likely not enough and there will be a need to buy additional material.

If you plan to equip a standard gable roof, which has a simple shape and does not have any complex architectural elements, you should take into account the slope of the slope and the area of ​​\ u200b \ u200bthe roof. For example, the area reaches 100 square meters, and the slope of the slope is 15 degrees. In this case, you will have to purchase 8 ridge elements and 63 sheets of material.

Installation instructions for ondulin sheets are standard when compared with other roofing materials. The weight of the sheet is small, and the dimensions are standard. That is why no difficulties are foreseen. However, it is worth paying attention to useful installation recommendations. Among them are the following:


Remember that the most difficult step is the choice of Andulin material for the roof. It is important to take into account the area of ​​the roof itself, how much the sheet weighs, what is its thickness, wave height, width and length of the sheet. The calculation itself is made taking into account the overlap of the wave material. In this case, the choice will be made correctly and the installation will seem to be a simpler workflow.

Ondulin is a high-quality and demanded material that will make any roof more attractive and reliable. Its cost is affordable. A wide range of colors allows you to choose a shade that is suitable for a particular home. The universal roof covering also allows work with a curved roof due to its bending ability. During operation, the coating easily withstands significant wind and mechanical loads, weather conditions. At the same time, the material has a low level of water absorption. This allows it to withstand about 100 freeze-thaw cycles without loss of performance.

Ondulin sheet size for the roof: useful area, weight, overlap


Description of the advantages of the material, the size of the ondulin sheet for the roof and its useful area. Information on single sheet weight, overlap size and installation recommendations. The content of the article

Ondulin sheets

Ondulin is one of the most popular roofing materials in modern construction. This material was developed by the French company ONDULINE, where it has been produced for over 50 years.

Today, production facilities are located around the world, incl. and in Russia. Laying assumes an accurate calculation of the amount of material required in order to avoid possible discrepancies in colors from different batches in the event of a shortage of material. To make a correct calculation, you need to know the exact size of the ondulin sheet. We will talk about this today.

Material specifications

In the production of ondulin - the size of the sheet has certain standards and may have a small error (+ 10mm / -3mm in length of the sheet and + 5 / -5mm in width) from different manufacturers. Standard dimensions should correspond to:

  • length - 2000 mm
  • width - 950 mm
  • sheet thickness - 3mm
  • wave height - 36 mm (+ 2 / -2 mm)
  • sheet weight - 6 kg

What are the advantages of Ondulin in comparison with other roofing materials?

  • service life - 50 years, waterproof guarantee - up to 15 years
  • wide temperature range of use (from -40 to +80 degrees)
  • withstand a load of up to 300 kg per 1 square meter
  • withstand heavy winds of up to 200 km / h
  • absorb precipitation noise up to 40 decibels (hail, rain)
  • withstand mechanical damage, exposure to acids, alkalis, oils, fungi

Characteristics of the Ondulina sheet, depending on the country of origin

How much is an ondulin leaf?

Although the price for an ondulin sheet does not apply to operational or technical characteristics, this factor is one of the decisive factors when choosing a roof covering.

It should be noted that the cost varies depending on the color palette (ondulin is presented in the following colors: red, black, green and brown). Depending on the margins of the seller and the supplier companies, the price of an Ondulin sheet can range from 400 to 500 rubles.

The price of additional elements for ondulin can be:

  • Endova - from 200 rubles,
  • skate elements - 250 rubles,
  • gable profile - from 250 rubles,
  • lining carpet ONUFLESH - from 900 rubles

Calculation of ondulin on the roof

If you decide to do it yourself, you may face the problem of determining the required amount of material, since they take into account only the size of the sheet itself (2 * 0.95 = 1.9 sq. M) and miss the gaps on the side and vertical overlaps.

ATTENTION! Taking into account the overlaps, the useful area of ​​the ondulin is 1.6 sq.

For example, if you need to equip a roof with an area of ​​100 sq.m. and a slope up to 15 0 will require 100 / 1.6 = 63 sheets. But these calculations take place when the equipment is simple without additional architectural elements.

If you perform calculations at the design stage, knowledge of geometry will come in handy for calculating the roof area from the projection:

  1. We divide the plane into regular geometric shapes (rectangles, triangles, squares)
  2. calculate the area of ​​a single element
  3. We take into account the angle of inclination of the roof (the useful area of ​​the ondulin depends on the angle of the slope and can be from 1.3 to 1.6 square meters)
  4. Summing up the values

If the projection of the roof is a rectangle and the angle of inclination is 30 degrees, then the roof area is equal to the product of the cosine of the angle and the area of ​​the rectangle.

If you did not work out with the geometry, you can entrust the calculations to the special program Ondulineroof (). You just need to specify the length and width of the roof slopes and the program will give you the required number of sheets.