How to calculate the roof. How to calculate roof area with high accuracy

The correctness of the calculations when planning a new construction or repair can significantly save on basic and consumable materials. Roofing pie is one of the key nodes of the house. In the process of its design, you need to know how to calculate the area of \u200b\u200bthe roof, to be able to calculate the area of \u200b\u200beach of its elements. There are special computer programs for this. But, unlike the machine, manual calculation gives a more accurate result, since it allows you to take into account the nuances of further styling roofing material.

Geometric shapes of the roof

The variety of geometric shapes of the top of the house determines the difficulty of calculating its area. The most common stingrays:

• rectangle;
• trapezoid;
• isosceles triangle;
• parallelogram.

To calculate the area of \u200b\u200bthe roof is quite simple if it has one, two or four slopes. The more elements - the more complicated, the more measurements and mathematical actions need to be done.

The calculation can be done in two ways:

1. Make calculations based on the plan of the top of the cottage. All linear dimensions of each slope are necessarily written on it. It remains only to calculate the area of \u200b\u200beach element and find their sum.
2. Take the “living” dimensions from the finished roof and perform mathematical operations. This option is more accurate, since absolutely exact coincidence of the actual dimensions of the top and its plan is very rare.

In both cases, you need to pay attention to symmetrical slopes. This primarily relates to the elements of a two- or four-pitched roof.

Calculation of the area of \u200b\u200ba single and gable roof

These two types are the simplest, since the slopes of the gable and gable top of the house usually have a rectangular shape. Counting their area can be done even without a detailed plan. Dimensioning is also quite easy.

The area of \u200b\u200ba shed roof is equal to the area of \u200b\u200bone roof rectangle:

A and B are the width and height of the slope, respectively.

These parameters can be found even without climbing to a height. It is enough to find out the length and width of the house and add to them the overhangs of the top of the house. Next, you need to measure the height of the roofing cake itself and, according to the Pythagorean theorem, calculate its length. Now you can multiply the received parameters and get the desired result.

According to a similar scheme, the area of \u200b\u200bthe gable roof is calculated. It can always be imagined as two single-pitch. Accordingly, and similarly, the dimensions of this type of roof are removed. If the slopes are symmetrical, you can remove the parameters of only one of them. Knowing the length, you can calculate the area of \u200b\u200bthe gable of the gable roof, especially if it is planned to revet it with wall corrugated board or siding.

The result for each roof element is determined by the same rectangle area formula:

Having learned the area of \u200b\u200bboth elements, by their usual summation, the total value for the gable roofing surface is calculated.

Calculation of the area of \u200b\u200ba tent, hip and half-hip roof

These roof options have a more complex configuration, so it takes more time to calculate the attic roof area. All of them are four-slope, which means that more measurements are needed.

A type of roofing surface made up of two trapezoids and two triangles is called hip. In most cases, its opposite sides are equal, and the triangles are isosceles. For such a symmetrical hip roof, it is enough to calculate the value for only two adjacent elements and multiply the result by two. If the sizes of each of them are different, you will have to measure the entire roof.

After the measurements, you can calculate the value for each element. For trapezoidal elements, the following formula should be used:

S \u003d (a + b) x h / 2, where

a - width over the lower overhang,
b is the width along the ridge,
h is the height.

For triangular elements, the formula applies:

S \u003d a x h / 2, where

a is the slope width along the lower overhang,
h is the height of the ramp.

Well, in the end, as in previous cases, the sum of the results of the calculation of all the elements is calculated.

The semi-hip structure differs from the hip structure in that instead of trapezoidal elements, it has hexagonal elements, the lower part of which is in the form of a rectangle, and the upper one - trapezoid. Accordingly, the measurement process is slightly different. In a hexagonal element, two of its components need to be measured separately, and calculations must also be done separately. Formulas can be viewed a little higher in this article. Again, the total area of \u200b\u200ba half-hip roof is the sum of the results of the calculation of all its elements.

The traditional hipped top is made up of four isosceles triangles. Usually it is symmetrical, therefore, measurements can be made only on two adjacent elements. It is only necessary to find out the height of each of the slopes and their width from the lower overhang. Further, according to the formula given just above, each element is calculated and the final calculation is made hipped roof.

Calculation of the area of \u200b\u200bthe roof with slopes with complex geometry

Multi-pitched roofs with elements with complex geometry no longer surprise anyone. These are the so-called dome and multi-tongue constructions. These solutions for the top of the house are very attractive. To calculate the roof area of \u200b\u200bsuch a configuration is much more complicated than in the case of conventional four-slope options. But an accurate calculation is necessary, since there is a large number of slopes, each of which has a different shape. The construction of such structures is a rather expensive business and the slightest mistake will inevitably lead to an additional expenditure of money and time.

The main difficulty in the process of calculating a multi-pitched roofing surface is the step of taking dimensions, and the more elements in the structure, the more difficult it is to take measurements. Here you can not do without raising to the roof. In any case, it is necessary to make a drawing of the roof and measure each slope. For each of them individually, it is necessary to calculate the area using the formulas above, then, summing up the data obtained, find the total roof area.

The issue of calculating the area of \u200b\u200bthe roof must be approached very scrupulously. After all, roofing materials are quite expensive and errors in the calculations will lead to unnecessary costs. It must be remembered that when buying roofing materials you need to make a small margin, since they overlap, and it is not taken into account when calculating the roof area.

The task of calculating the area of \u200b\u200bthe pitched roof arises not only when designing a new house. Carrying out overhaul  roofs with complete dismantling of the rafter system poses the same tasks for builders. The ability to carry out calculations of any complexity level for all elements of pitched roofs is necessary both for monitoring the correctness of the project, and for assessing the strength parameters of the structure being built, as well as for the accurate purchase of all materials required during construction or repair.

Gable roofs are the most common type. They can be found almost everywhere, but they were most widely used in the design of residential buildings.

When describing a roof of this configuration, it is usually limited to the following characteristics:

• The surface has two slopes, most often the same length;
• Roof slopes rest on bearing walls  at home;
• The interior of the roof has a classic triangular shape.

For information ! The indicated parameters are typical for single-story buildings. For houses of higher floors, there are projects of gable roofs with different lengths and widths of inclined surfaces.

Classic pitched roof is a neat triangle

Design subtleties

The design of the house allows you to translate on paper the idea that will be further implemented in the specified territory. Based on this, all the basic calculations are carried out, including roofing materials.

Design of a gable roof provides for the introduction of the main parameter, based on which all the basic indicators will be calculated. Such a characteristic is the slope angle of the ramp.

When considering a typical roof configuration with two inclined planes, the angle can vary up to 45 degrees, while the minimum roof pitch angle is taken to be 11 degrees. Thus, it turns out that the steepness of the surface can vary over a wide range, changing the operational performance of the “fifth facade”.

Important ! The angle of the roof slope is a value inversely proportional to climatic stresses (rain, wind, snow, etc.).

The angle of the roof slope can range from 11 to 45 degrees

In addition, deciding what angle of inclination will be at the roof of the house, one should not forget about such a factor as windage. Sailing is the susceptibility of the roof structure and the roof as a whole to wind flows. That is, the more intense the roof is taken, the more it is exposed to wind load, the more attention should be paid to arranging the rafter system and the crate.

Already at the design stage, you need to understand what types of calculations will be in demand in the future:

1. Calculation of the load;
2. Calculation of the roof rafter system;
3. Calculation of the crate;
4. Calculation of the roof of a gable roof.

Roof loads

The calculation of a gable roof begins with the derivation of digital indicators that characterize:

• The weight of the "roofing cake";
• Snow load;
• The magnitude of the wind load.

Find out exactly how these factors will affect the weight of the roof, thanks to special formulas. According to the corresponding SNiP, they take into account all the features of the regional location of the house under construction, which means that the load standards are most accurately determined. Also, when calculating these indicators, the angle of inclination of the roof slope is also taken into account.

Roof wind loads resulting from air pressure

As for the weight of the roof, it is calculated quite simply, since all the materials used for insulation affect its value. Data on the load of any element from the layers of the roof are available in the accompanying documentation and technical description for construction products.

Important ! A value that even the most experienced craftsmen do not recommend exceeding is 50 kg per square meter.

Calculation of the truss structure

Engaged in the independent development of the rafter system diagram, one involuntarily has to calculate all its parameters. You will learn how to calculate the height of a gable roof, its area and other data. By importance, the calculations of the rafter system are equivalent to the calculations of roofing loads.

The reason for this comparison is that the rafters act as a link and help to redistribute the load from the entire roof structure to the supporting walls of the house. Also, knowledge of how much weight the rafters must withstand is crucial in the selection of material for their installation.

Important ! The resulting calculated value should be increased by 50%. This will form a good margin of safety for the entire structure of the rafters.

The task of the rafter system is to distribute the weight of the roof to the supporting walls of the house

The criteria that are guided by when calculating the rafter structure are usually two:

• Deformation, that is, the intensity of the deflection of the roof;
• Durability - the ability of a system to maintain integrity for a long time.

In addition to load indicators, the calculation of rafters includes determining the size of their pitch and the need to use additional structural elements.

Crate

Lathing is a necessary element of any roof. It is thanks to this design that the correct laying of the roofing material is ensured, its durability and reliability during operation.

The crate may be different in configuration, but usually emit:

• Solid option;
• Lattice with a certain step (gaps).

For information ! The step of the crate is that admissible interval between the bars on which the roofing material lies most optimally.

The type of lathing of the pitched roof must be selected, focusing on the type of roofing material

In order for the calculation and formation of the crate to be carried out without errors, it is very important to first learn how to calculate the area of \u200b\u200bthe pitched roof. Also, this information will be useful in the calculation of roofing material for installation work.

The lathing and all its characteristics are determined by the type of roof, the material of the rafter system, as well as the type of roof. So, for example, the use of soft roll coatings is possible only with a continuous crate. The materials for the manufacture of the lathing are a bar with a section of 50x50 mm or boards 2-2.5 mm thick.

Calculation of the area of \u200b\u200ba pitched roof

So, the defining parameters of any gable roof are the angle of inclination of the planes and the total surface area. If the first indicator is the planned value, then the second characteristic is usually determined by calculation methods.

For determining total area  Roofs are more often used in one of two ways:

• The use of special programs that carry out the calculation according to the parameters entered into them;
• Independent calculation - suitable for roofs of simple architectural forms.

When choosing the second option, it is worth noting that such work requires thoroughness and accuracy.

Important ! Without information on the area of \u200b\u200bthe roof, it is impossible to make an estimate for the work.

In order to make the calculation as accurate as possible, a certain algorithm is used:

1. The length of each slope is determined. For this, it is very important to carry out the correct measurement, that is, measure the distance from the lower edge of the ridge to the farthest point of the cornice strip.
2. All structural elements are taken into account: parapets, overhangs, etc.
3. The type of roof is determined, since the value of the calculated slopes depends on whether the tile, metal or rolled material is used.
4. Do not take into account all the service details of the roof: pipes, ventilation openings, dormers, and similar elements.
5. The slope value is calculated.

It is worth noting that even such a simple calculation often causes difficulties. Therefore, if this type of work is not familiar, then it is better to use the method of sequential actions. Its essence is to divide the entire roof area into simple geometric figures, perform arithmetic operations with known numbers and combine the results in total.

Final conclusions

Building a house is somewhat reminiscent of a good designer, and design work is school geometry lessons. However, in reality, things are not so simple. The construction or repair of a house can not be regarded as frivolous work or as educational construction activities. It is advisable to engage in construction for people with good experience in similar work or in the presence of a serious theoretical base. If you choose between these categories, then preference should be given to professional practitioners.

The roof, built with the help of specialists, will be reliable in operation

When home builders are engaged in building the house, you can be sure that all work will be carried out at a very high quality level. This means that the constructed house will stand for a long time, not require unjustified repairs and delight residents with a cozy atmosphere, regardless of the weather outside.

1. What data is important and where to start computing
2. Calculation of the area of \u200b\u200ba single slope structure
3. Calculation of the gable structure
4. Calculation of the area of \u200b\u200bfour-slope structures
5. Roofs and features of complex calculations
6. Online calculator help

The construction of any house, regardless of its quadrature, number of storeys and fashionability, begins not with the foundation pit and foundation, but with the preparation of the project and calculations, among which the roof is among the most significant and requiring increased accuracy. It is also considered one of the most important elements of construction, and performs two important functions at once:

• protective, because it is she who will shelter your home from moisture, rain, cold, i.e. provide warmth and comfort in the room;
• aesthetic, giving completeness and expressiveness to the exterior, making the structure interesting and presentable. Even the most primitive “box” of the house, with walls that are not distinguished by anything remarkable and without original additions (a beautiful porch, a fashionable terrace), a well-chosen roof of an interesting design can easily turn into a real masterpiece of design art.

But it will turn out that way only if you have selected the most suitable shape, know how to calculate the roof area of \u200b\u200bthe house and perform other calculations, have not made inaccuracies in measurements and mathematical operations, and have professionally realized your wishes.

What you need to consider for calculations

Understanding how to calculate the roof area, knowing the area of \u200b\u200bthe house, is useful to you, first of all, in order not to make a mistake in the amount of material needed for the construction. The more accurately they are implemented, the higher the chance of avoiding unnecessary financial costs.

To begin with, determine the type of roof to be built, because there are many modern architectural solutions: there are simple and complex, the same type and combined - for every taste, if only the appearance of the structure was unique and irresistible. Today, there are different forms:

• single slope;
• gable;
• four-slope;
• mansard;
• hip;
• tented.

The form chosen for the arrangement of the roof is always reflected in the construction project. Carrying out the calculations, they pay attention to what kind of roofing material the coating will be made (slate, metal tile, etc.).

Directly to determine the total quadrature, you need to take data such as:

• height of raising the ridge run (ridge);
• slope length;
• angle of inclination of pitched planes;
• house parameters (width, length);
• the size of the overhangs (gable, cornice).

How to determine the quadrature of the simplest type of roof

The easiest way is to find out the area of \u200b\u200ba single-slope structure, which is usually chosen to cover farm buildings (a barn, a garage, facilities for breeding pets).

The shape of the pitched plane is the simplest - it is a regular rectangle, respectively, the area is equal to the length multiplied by the width, while on each side you need to add the size of the pediment overhang and the eaves (you can take the standard one in half a meter).

Gable structures

For residential buildings and cottages, gable structures are most often chosen, this option is often called the "classic". Problems with how to calculate the area of \u200b\u200bsuch a house roof with a calculator will also not arise, because all calculations are based solely on the simplest basics from the course of trigonometry studied in high school. Initially, the area of \u200b\u200bthe sloping plane is determined, and then the resulting value is multiplied by "2", because in a design two slopes. But if the project provides for the construction of pitched planes with different sizes, then the areas of each of them are separately calculated and summed up.

For a visual representation, we can consider one of the calculation examples, for it we need the following initial data:

• the length of the house (for example, it is 10 meters);
• the length of the ramp (it is equal to the length of the rafter leg and, suppose, was 5 meters);
• the size of the gable and cornice overhang (we will accept standard ones, 0.5 meters each).

Substituting all the values \u200b\u200binto the formula, we obtain that the area of \u200b\u200bone pitched plane is:

S \u003d (10 + 2 * 0.5) * (5 + 0.5) \u003d 66 sq. meter.

Given that there are two slopes, we double the obtained value, as a result, we determine that the roof area will be 132 square meters. meter.

As a rule, any design contains chimneys and vents, can be equipped with windows. But their sizes are not taken away from the obtained size of the area.

Features of four-pitched structures

Today, for the construction of the roof of a residential building, it is fashionable to choose four-slope structures. Most often, if the dimensions of the building are proportional and square, the roof is made in a pyramidal shape. This variety is called “hipped”, in this case each slope is an isosceles triangle, all of them are connected at the top at a single point, and the quadrangle serves as the base. In this case, how to calculate the area of \u200b\u200bthe tent roof of the house with a calculator will not cause difficulties, because you can apply the formula, which involves calculating the area of \u200b\u200bthe triangle, then multiplied by "4". To find it, you need to multiply the width by height and divide the result into two. Let's say we have the following data:

• the width of the base of the triangle is 8 meters;
• slope height 5 meters.

It is very important to take into account for this calculation that measurements are taken not along the perimeter of the structure, but along the eaves. Also, do not forget that the angle of inclination of the ramp planes should be taken into account in the value of the height of the ramp.

Understanding how to calculate the area of \u200b\u200bthe four-gated roof of the house, you may be faced with the need to select calculations for a more complex structural variety, called "hip". This is also one of the most popular solutions used today for decorating residential buildings and country cottages. This design consists of two end faces, having the shape of isosceles triangles, and two lateral, made in the form of trapezoid. The calculation principle is based on determining the areas of the triangle and the trapezoid, multiplying each obtained value by “2” and then summing it into the total result.

As already discussed, to find the area of \u200b\u200ba triangle, you need to multiply the width by height and divide the result by "two". In the case of a trapezoid, it is also necessary to use the provided formula, in which the bases are summed up, the result is divided into “two”, and then everything is multiplied by the height of the ramp.

For a hip structure, it is necessary to pay attention to the presence and size of windows, chimneys, overhangs, parapets.

Features of attic structures

Among the undisputed leaders in popularity include the attic type. It is characterized by a sloping "broken" roof, which consists of two parts. The top in this case is gentle, and the bottom is steep, which allows you to create a spacious and roomy attic, which is called the "attic".

Understanding how to calculate the area of \u200b\u200bthe attic roof of the house, at first glance it may seem that this is too difficult to do, but in fact the principle will be clear even to a layman. First you need to draw up a design plan with a clear indication of all known sizes, and then simply break it down into the simplest geometric shapes, the areas that are found according to the school curriculum at geometry lessons:

• the square S \u003d a * a, where a are the sides;
• the rectangle S \u003d a * b, where a and b are also sides (length and width);
• the triangle S \u003d a * h / 2, where a is the value of the base, h is the height of the figure;
• at the trapezoid S \u003d (a + b) * h / 2, where a and b are the upper and lower bases, h is the height.

Having received the values \u200b\u200bof simple figures, they are summed up, and the final result will be equal to the total roof area. At the same time, do not forget that there are two pitched planes, and it is necessary to summarize the square of simple figures on both sides.

Also always remember that all measurements must be carried out from the extreme point of the cornice to the ridge. When measuring the bases, always add a margin to the eaves and gable overhangs, at least leaving them half a meter.

Online Building Assistants

Thanks to the limitless possibilities of the Internet, nowadays you can cope with the task much easier and faster, because such a convenient tool as an online calculator was invented, and anyone can calculate the roof area of \u200b\u200bthe house with it.

In order to carry out settlement actions, it is enough to go to the website and enter the data requested for computational operations in a special form. Further, the system itself performs the calculations and produces a finished result.

When starting construction, the question always arises, how to quickly and correctly perform the calculation of the roof area? This operation seems to be simple only at first glance. In practice, it turns out that the calculation can be quite complicated even for experienced craftsmen. Since the total amount of money spent on the construction of the roof directly depends on its correctness. Given the high cost of building materials and the cost of installation, you can try to reduce the cost of the entire project. Let's try to figure out what is necessary to perform the correct calculation of the quadrature.

The main stages of work

The calculation of the roof area should always start with:

• familiarization with the future project of the roof of the house and remembering the most key parameters: the length of the ridge, the slope angle, height, width and length;
• determining the type of roofing material to be used.

One of the most important characteristics is a special calculated coefficient, which is present in absolutely all formulas. Its value depends on the angle of the roof slope and is determined by the following relations:

• with a slope of 9 °, the coefficient will be 1.01;
• for 14 ° - 1.03;
• for 18 ° - 1, 05;
• at 23 ° - 1.08;
• at 27 ° - 1.12;
• for 34 ° - 1.2.

The indicated range of roof tilt angles are the most popular options used in construction in our latitudes. It is possible to determine the parameters of a structure with a complex geometric shape by breaking it up into individual small figures, which can be easily calculated by summing up the obtained values \u200b\u200bat the end. To the result, experts recommend adding about 10%, which is the standard value of the stock in construction.

Formulas and Definitions

The simplest calculation option is to determine the area of \u200b\u200ba shed roof with any slope. Houses with this kind of roofs are usually covered with simple materials, and the most common form is a rectangle. To calculate the roof area, we need to know the length of the ramp and its width, which should be multiplied among themselves with a predetermined calculated coefficient.

It should not be forgotten that to the area of \u200b\u200bthe shed roof of a house, the value of the area of \u200b\u200bthe slope overhang should be added, which is mandatory for roofs of this type.

To calculate the gable roof area of \u200b\u200ba house, it is necessary to take into account significantly more values \u200b\u200band factors. So, for a slope with a length of 6 linear meters and a skate of 9.5 linear meters, the calculation formula will take the following form: the length of the skate should be multiplied by the length of the slope and multiplied by the number of slopes (in our case 2). If you need to calculate the number of metal tiles for this roof, then you should first determine the dimensions of one sheet of roofing material. The formula that allows you to calculate the number of sheets of metal tile has the following form: the length of the ridge is divided by the width of the roof sheet and rounded to a larger value. For such calculations, it is important to know the geometric parameters of the roof of the house and the geometric parameters of the roofing material.

Final conclusions

The area when using other materials can vary significantly. For this reason, for each particular case, an individual approach, a thorough analysis and competent calculation are required. The most difficult situation arises when it is necessary to calculate the quadrature of roofs of complex shape. To get a reliable result, you should follow a few simple rules.:

You should be aware that when calculating the area, it is important not to forget to consider ventilation ducts, dormers, chimneys, parapets, hatches and other elements. In case of violation of this rule, there is a high probability of a shortage of building materials in the arrangement of the roof. Correct and competent calculation of the area will provide all conditions for the optimal spending of financial resources associated with the purchase and disclosure of material during the construction of the roof of the house.

The first and most important step in construction is the calculation and calculation of the required amount of materials. When installing the roof, a similar question is no less relevant. The calculation of the roof area can be very difficult, although, in fact, it is easily solvable. The roof often has uniform ramp shapes. Certain formulas for calculating the area were invented. They should be dispensed with. On the important nuances of calculating the area of \u200b\u200broof slopes, their types and rules for use, read below in the article.

• Initially, they recommend preparing a plan of the roof of the building in terms of its slope.
• The second step is to measure the construction tape measure. It is advised to resort to certain calculation programs that allow you to get the most accurate data.
• According to the results of measurements, you should determine the type of roofing

Often, long-tried formulas are used to calculate the size of the roof plane. Given the most common triangular shape of slopes, formulas from the science of geometry should be applied.

Initially measure the angle of inclination of the ramp. It is fundamental in subsequent computational processes. Consider the coefficients of the slope of the roof:

1. A 9 degree angle has a ratio of 1.01
2. 14 degrees is 1, 03
3. At 18 degrees - 1.05
4. 23 degrees tilt has a coefficient of 1.08
5. Angle 27 degrees - 1.12
6. Maximum angle of 34 degrees - 1.2 ratio

The roof, which has a complex structure - four-pitched, hip, three-pitched and others - is subjected to a phased calculation of the area. It is divided into parts, their area is considered separately, after everything is summed up. Often, plus ten percent (taking into account small errors) is added to the final result.

How to calculate the roof area: consider different roof slopes

Starting measuring the area of \u200b\u200bthe roofing system and determining the required amount of building material, you need to decide what type of roof the meter is dealing with. Consider each type of stingray separately.

Calculation of the area of \u200b\u200ba shed roof

A shed roof is considered one of the simplest structures. Its calculation does not require special professional knowledge. The shed version often has standard coverage. The classical shape of such a roof is rectangular. Based on the knowledge gained back in school, the area of \u200b\u200ba rectangle is the length and width multiplied by each other. It is enough to know the parameters of the length and width of the roof.

Calculation of the roof area of \u200b\u200btwo slopes

The gable roof has a triangle shape. Calculation of its area is made according to a geometric formula. We call one roof slope “C”, 50 percent of its width should be divided by cos 30 degrees (cosine 30). The result is 0.866.

The calculation of the size of the planes of a gable roof has its own subtleties of calculation. It is worth taking into account the features of the gable roof, consider them with an approximate example:

• One slope has a length of 5 meters
• Its ridge element is 8.5 meters

Calculate: 5 * 8.5 * 2 \u003d 85 square meters (multiply by two in the number of two slopes). We get the value of the roof.

Certain material requires its own calculations. Simply calculating the area of \u200b\u200bthe roof slopes is not enough. Given the widespread prevalence of roofing with metal, consider its calculations.

One layer of metal tile often has standard parameters:

1. Single-wavelength is sold with parameters of width 1.1 m, length - 0.35 m
2. Three-wave - width 1.1 m, length 0.5 m

Knowing the type of metal tile chosen, you need to divide the length of the ridge element by the width of the formation. The result is rounded up. This will be the sum of the sheets for covering the gable roof.

Note: initially it is worth learning the clear parameters of metal tile sheets from manufacturing companies. The calculation of the amount of building materials of other types of roofing may vary.

Roof area with complex structures

A roof with more than two slopes is called complex in its calculations. Before you start, you should familiarize yourself with important tips:

1. Initially, it is advised to divide the entire surface of the roof of the building into separate components. This will simplify the general area calculation. Calculating the area of \u200b\u200bindividual squares, rectangles, and triangles is a lot easier.
2. The result of calculating the gable roof of all the individual components is recommended to be multiplied by the cosine of the angle
3. The roof slope should be measured from the extreme point of the cornice to the ridge element
4. The resulting amounts of each individual element are added to each other, and the final figure is obtained
5. Even a simple ramp can have additional add-ons. Add-ons should be measured separately
6. When calculating, it is worth taking into account ventilation parts, chimneys, window openings, parapet installations, hatches. Their parameters are taken into account when ordering a roofing

Formula for calculating the roof area

Additionally, it is worth mentioning the features of calculating the area. You need to remember about:

• Roof shape;
• Parameters of additional elements;
• The presence of an overlap;
• The method of roofing;
• Type of roofing.

When covering the roof with slate, the area formula is used: S \u003d (2xA + B) * (2xA + C) * cos30.
  The components of this formula:
  A is the width of the overhang;
  B is the length of the walls of the building;
  C is the width.
  The value of the angle is taken as 30 degrees.
  When roofing with a metal tile, an additional valley, a ridge board, a cornice, an overhang are calculated. The material should be purchased with a margin of overlap. Its area formula: S \u003d (B * h) / 2.
  Component formulas:
  S is the surface area;
  B is the length of the base of the triangular roof;
  H is the height.

It is important to note: The most accurate calculation of the area may give incorrect indicators of the amount of required roofing material. It is important to take into account the angle of the roof, the type of construction. It is worth considering all the nuances of the roofing system and calculate the area of \u200b\u200bthe pitched roof as accurately as possible.