How to calculate the roof area yourself?

Construction is an exact science, so during the erection of a building it is especially important to calculate the roof area correctly. In our time, to facilitate this work, you can resort to the help of special electronic calculators that are on some websites. But in order for the calculation in this case to turn out to be quite accurate, you also need to have some idea of how to calculate the roof area.

Such an indicator is important from both a practical and a theoretical point of view, if only because the correct calculation of the roof area helps to understand how much roofing material is needed for this. And as a result, you do not have to buy an extra amount of this or that kind of material. Also, in case you know the exact area of the roof of your building, you can optimally approach the choice of roofing material, taking into account its features.

To learn how to calculate the surface area of the roof, you will need to remember the high school math course. First of all, it is necessary to have a roof top view, that is, its projection. However, it should be remembered that such a projection is built at an angle, so at this stage we will additionally have to recall formulas from geometry.

If the roof of your structure is not quite a simple form, then in this case, experts advise to divide it into simple geometric figures. Most often in this case, the roof is divided into trapezoids and triangles or rectangles. How to calculate the surface area of a roof in the case of its uneven shape?

To do this, calculate the area of simple figures on which you broke the roof, and these calculations are adjusted taking into account the slope of each such figure. In simple terms, all the obtained area values are multiplied by the cosine of the angle of inclination to the ground. All the resulting values are added, resulting in the total area of the roof of your building.

How to calculate the roof area of your building and at the same time get the most accurate results? For this, in the calculations it should be remembered that the required area is not according to the parameters of the building itself, but from the eaves of simple figures, to which the roof is broken. If this is not taken into account, then in the end you can get the value of the area, which is not true, resulting in material for the roof may not be enough.

You also need to know that different roofing materials have their own mounting features. Therefore, after the calculation of the roof area has been completed, another 20% should be added to the figure, in the case of possible waste and some of the complexities of the roof structure itself .

Experience shows that approximately 7% of the roofing material goes to waste. And since in most cases the roof is mounted overlapping, then to this figure it is worth adding about 10%. To verify the correctness of your calculations, you can resort to the help of an electronic calculator. However, its services should be addressed only to verify the results, since you can calculate the surface area of the roof yourself more accurately.