No one goes after building materials at random - this is at least unreasonable. Before buying, we always calculate how much will be needed. So, for example, choosing ondulin for the roof, the dimensions of the sheet should be specified in advance. After all, taking an insufficient amount of material, you can, in addition, be very upset when you see that the shade from the new batch is not at all the same, well, but you also do not want to overpay. Therefore, in this article we propose to deal with what are the sizes of Ondulin and its additional elements, as well as how to calculate the required amount of this material for the roof of the house.

Sizes of Ondulin and additional elements

Measuring the ondulin sheet

The French three-millimeter roofing with the name ondulin (or euro slate) basically has organic cellulose fibers. For durability and color preservation, the material is impregnated with bitumen with special additives.

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

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

And now the parameters of the sheet of the euro slate:

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

During installation, you will also need fasteners with accessories. In addition to special nails, cornices, a valley, gables, gutters and placeholders for cornices, windows and fans for roofing will be needed. You should definitely consider them all.

Ondulin roof

Dimensions of additional elements of Ondulin

Item nameLong mmUseful length, mmThickness, mm
Roof ridge
Ridge element
1000 850 3
Endova Ondulin
Endova for Ondulin
1000 850 3
Forceps element Ondulin
Forceps element for Ondulin
1100 950
Skate filler, cornice
Cornice Skate Filler
85 - 25
Covering apron
Apron
940 (width of the covered area 846 mm) - 1,44 
Ventilation tube
Ventilation tube
846 -  -
Nails with lockable hats
Nails for Ondulin
 75 - -

We determine the right amount of roofing

Usually these calculations are undertaken by the company that will mount the ondulin roof. Usually she 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 in mathematics will be enough. You just need to imagine the entire surface of the roof in the form of simple geometric shapes - triangles, rectangles, squares. Easily calculating the area of ​​each, we add them all - this is the area of ​​the roof.

And now the most important thing is not to make the main mistake, taking “dirty” instead of “clean” sizes. Otherwise, not taking into account the stock required for overlapping 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 the consumption of material. After all, about 0.3 square meters from this sheet will go to 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 length of the overlap will be from 10 to 15 centimeters, and in width - one wave (9.6 centimeters). We get the "clean" sizes:

  • Length - from 1.85 to 1.95 meters;
  • width - 0.864 meters.

With these sizes of the ondulin sheet, its useful area will turn out to be less - from 1.6 to 1.64 square meters. And another thing: do not forget that along the edge of the roof you will have to cut it, and 10 percent more material will be needed. From these figures and build on, buying a roof.

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