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 plane.

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, and the final result will be equal to total area  roofing. At the same time, do not forget that there are two pitched planes, and it is necessary to summarize the quadrature 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.

February 9, 2017

How to calculate the roof area?

The strict geometry of the roofing determines the method of calculating the total roof area as an arithmetically simple task. But the mass of various types of building a roof and the personal preferences of the owner of the home leave many questions and doubts about the correct choice of the method of calculating the area.

The desire to organically fit the house into the surrounding landscape is dictated by the most elaborate roof designs. Tent, attic, multi-gable projects complicate the calculations. So how to reliably calculate the area of \u200b\u200byour roof? We will cover this issue in detail from the point of view of the end user of the roofing.

The choice depends on how the under-roof space will be operated. In the case of utility, technical premises, the choice is usually stopped on a shed roof. In the case of a residential attic, an attic type structure is chosen or, given the presence of natural light, a complex multi-gable roof is built.

Naturally, the roof area increases significantly, and it will be more difficult to calculate it. Before you begin designing the roof, you need to know what they are.

According to the signs of the shape and number of roof slopes, they are divided into the following main types:

1. a pitched roof is used for baths and utility rooms, less often for residential buildings, which acquire an original and non-standard appearance;
2. a gable roof, one of the most popular solutions in summer cottage construction, is distinguished by practicality, ease of installation and maintenance;
3. the attic type of roof has certain advantages due to the presence of an additional residential attic;
4. the hip roof is a four-pitched roof, which consists of two trapezoidal and two triangular slopes and is characterized by increased resistance to wind loads;
5. the tent roof has four or more triangular slopes; it is used in the construction of both residential premises and all kinds of arbors;
6. multi-gable roof - a complex broken structure that has an attractive appearance and allows the use of a subroofing room for housing;
7. a domed roof is used as an architectural element or as the roof of religious buildings.

Such a variety of designs gives wide scope for the owner’s imagination and the ability to combine different types of roofs in one building. Determining the area is a rather difficult technical task, but we will try to simplify it.

Calculation of the area of \u200b\u200ba simple roof

Before calculating the area of \u200b\u200bthe roof, it is necessary to know in advance not only the dimensions of the roofing, but also the dimensions of the overhangs on the gables and cornices. Otherwise, it will not be possible to optimally arrange the sheets and calculate the required supply of material.

Buying cover in case of shortage, you run the risk of purchasing it from another batch, which can lead to a difference in colors.

When determining the area of \u200b\u200bthe roof of the house, it is necessary to prepare a number of tools and devices to make detailed drawing. On its basis, the true area is found, which may differ from simple rectangular shapes. For measurements you will need:

• building tape;
• attorney level;
• a square to determine the rectangularity of the slope;
• pencil and notebook.

The slope area, provided it is rectangular, is calculated by simply multiplying the length by the width of the roof. The parameters are fixed taking into account the gable and eaves overhangs, then the amount of necessary roofing material, without losing sight of the correction for overlapping sheets.

The length of the slope can also be calculated according to the Pythagorean formula, measuring the height of the ridge and the width of the house, taking into account the eaves overhang. If the roof is not strictly rectangular, calculate the area by summing the area of \u200b\u200bthe rectangle and two triangles.

When the house has a gable roof, it is necessary to calculate the quadrature of each slope separately and summarize them to calculate the overall result.

Hip roof area calculation

Complex roofs include multi-gable, hip and dome-shaped types of structures, the quadrature of which is the sum of the area of \u200b\u200bvarious geometric shapes. As an illustration, you can consider the calculation of the quadrature of the hip roof. It consists of two isosceles triangles and two trapezoids.

The area of \u200b\u200bthe triangle is calculated by the following formula:

S 1 \u003d (a x h): 2,

where S 1 is the area of \u200b\u200bthe triangle, a is the length of the base and h is the height of the triangle.

The area of \u200b\u200bthe trapezoid is calculated by the following formula:

S 2 \u003d [(a + b) x h]: 2,

where S 2 is the area of \u200b\u200bthe trapezoid, a and b are the bases of the trapezoid, and h is its height.

Thus, the total quadrature of the hip roof will be equal to:

S total \u003d (S 1 + S 2) x 2

Calculation of the area of \u200b\u200broofs of complex configuration

In the case of calculating the quadrature of more complex roofs, the method of breaking down into simple geometric figures also fully justifies itself. The drawing made after the measurement will allow you to accurately calculate the quadrature of the fragments and, by adding, obtain the overall result. If the slope or fragment of the roof has the shape of a parallelogram, you can calculate the total result by the formula:

where S is the area of \u200b\u200bthe fragment, a is the length of the side, and h is the height of the parallelogram.

When calculating the total amount of coating, it must be borne in mind that in triangular and trapezoidal sections of the roof, material losses can reach 20% or more.

Tent roofs consist of four isosceles triangles, the quadrature of which is summed to obtain a common result. Dome-shaped roofs can consist of separate sheets of complex shape, but nevertheless they are calculated by bringing to separate geometric components for a simple calculation of the amount of coating. It must be said separately that in the case of the use of combustible roofing materials, it is necessary to ensure workplace  fire protection means.

When calculating the required amount of roofing material, it is not necessary to take into account the outputs of ventilation, chimneys and window openings, this reduces the risk of a lack of coverage, since waste on complex roofs can be from 8 to 30%.

In a detailed drawing of a multi-gable roof, individual geometric figures, which may be:

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

The position of these figures on the roof should be clearly and unequivocally fixed on the drawing, which will make it possible to further draw up a pattern of cutting of the coating in relation to its overall dimensions. This will avoid large financial losses and optimally lay the roof.

They are calculated separately, it is best to do this with the participation of a qualified seller who can check yours and give additional recommendations. In addition, on the Internet there are special calculators for calculating the area of \u200b\u200bcomplex roofs.

Conclusion

Thus, we talked about the correct calculation of the area of \u200b\u200broofs of various types. Carefulness and thoroughness of measurements, as well as a compiled installation diagram, will allow you to avoid miscalculations and gross errors. And then the roofing work will take place without financial losses and bring joy.

Construction is an exact science requiring the correct calculations in the construction of any object. So professional builders need to know how to calculate the roof area. Some of the calculations can be performed using electronic calculators offered by various sites. However, a truly accurate calculation can only be done "manually", starting from a specific object.

How to calculate the roof? The concept of such calculations includes height, area, slope, the amount of necessary materials. Moreover, these figures must be known not only for theoretical calculations and compliance of design documentation. Knowing the exact numbers will help you understand how much roofing material you may need. And this will provide an opportunity to save on the purchase of unnecessary volume. Such calculations help to determine the choice of material for the roof, taking into account its features.

It is impossible to say unequivocally how to calculate the roof of a house, since the scheme of such calculations depends on the architecture of the building. So the combined roofs used most often for outbuildings are flat, therefore they are easy to calculate. And attics can be of various types: gable, single-slope, multi-tonged, hip and half-hip, tent, and for each type it is necessary to apply its own calculation method.

Most often, in individual houses under construction without any frills, gable roofs are erected, so we will consider, first of all, how to calculate the gable roof of the house. Moreover, such calculations are much easier to do than, for example, the calculation of the hip roof.

The calculation of the roof of the house is needed in order to not only control the correctness of the project, but also to assess the ability of the roof to withstand the materials laid on it in conjunction with the weight of precipitation and possible overloads

Calculation of the angle of the roof

Without a roof slope, precipitation will accumulate on the roof. The calculation of the slope gives an accurate idea of \u200b\u200bthe height at which the skate should be raised, allows you to find out the amount of material for the roof, how to install it and at the same time comply with the requirements of the manufacturer of the selected material.

The angle of inclination can vary between 11 ° -70 °, but to make it more than 45 ° is impractical. If a warm and dry climate prevails, a large slope is not needed. At the same time, terrain with cold and snowy winters requires a greater slope. At the same time, an angle of 45 ° will save the house owners from snow load, but at the same time they will increase the wind pressure. In this case, it is necessary to strengthen the crate and the rafters. In addition, a large slope will require more roofing materials.

The value of the slope of the roof depending on the selected roofing

The slope angle on gable roofs largely depends on what material is chosen for roofing. So for metal it will fluctuate between 15-27 °, rolled materials require the same inclination. And for slate, 27 ° is also suitable.

The calculation of the slope of the roof is shown in the table. The slope can be measured both in percent and in degrees, in the table the data is indicated in two units of measurement. The last column contains the digits of the roof lift coefficient. This coefficient is equal to the rise of the ridge by 1 meter.

Determination of the slope of the roof. Part 1

Determination of the slope of the roof. Part 2

Calculation Example

For a house with a width of 8 m and a roof with a slope of 40 °, we calculate the height of the roof. To do this, half the width (4 m) must be multiplied by the coefficient of the ridge. For 40 ° it is 0.839.

0.839 * 4 \u003d 3.356. So, the rise of the ridge of such a house will be 3.356 meters.

How to calculate the roof area

In order to find out how much roofing material you need to prepare, you must know the roof area.

Important!

The choice of the drainage system, the size of the gutters and drainpipes depends on the area of \u200b\u200bthe roof and the angle of its inclination. So, a slope with an area of \u200b\u200bup to 60 m 2 can be dispensed with a trench with a diameter of 125 mm, and water with a surface of 100 m 2 can be discharged by a trench with a diameter of 150 mm. Calculation of drainpipes is carried out taking into account the fact that each drainpipe provides an effective drain from every 10 m of the gutter.

The easiest way to do such calculations for gable roofs, consisting of two parallelograms. We recall the basics of geometry and multiply the height of the parallelogram (a) by its width (b) and add the resulting figure:

ab + ab \u003d 2ab \u003d S total

Of course, much more material will be required, if only because the sheets will be overlapped.

Calculation of the gable roof area at an angle of inclination of 30 degrees

The calculation of the area of \u200b\u200bthe four-pitched roof is more complicated. As a rule, four-pitched roofs are either hip or hipped. We decompose the surfaces that make up the roof into simple shapes. For the hip, it will be 2 trapezoids and 2 triangles, and for the hipped - 4 triangles.

The area of \u200b\u200ban equilateral triangle is equal to half the product of the width of the base of the triangle (a) and its height (h):

We get the actual area of \u200b\u200bone of the triangles. If it is a hipped roof, with equal sides, then the figure is multiplied by 4:

However, the option with absolutely equal sides of the building is extremely rare, which means that the lower sides of the triangles by which we calculate the area will not be equal. Therefore, most often, the calculation according to the specified formula needs to be done for each slope separately, and then add the results:

S1 + S2 + S3 + S4 \u003d S total

So we calculated the area of \u200b\u200bthe tent roof. Now let's do the same with the hip, consisting of triangles and trapezoids. The area of \u200b\u200bthe trapezoid is equal to the sum of the length of the base (a) and the length of the top of the trapezoid (b) times its height (h) and divided by 2:

As in the first case, we calculate the area of \u200b\u200bthe triangles. The total area is obtained from the summation of the areas of all trapezoids and triangles:

2STeperations + 2Striangle \u003d S total

It rarely happens that it is necessary to calculate the area of \u200b\u200beach trapezoid and each triangle separately, and then summarize the results.

Of course, this method is only suitable if you have the exact dimensions of each slope. When on your hands there is only a top view (projection), you will have to not only multiply the area of \u200b\u200bthe depicted figures (the same trapezoid and triangles) to obtain real numbers in accordance with the given scale, but also multiply with the cosines of the angle of inclination.

Important!

When calculating the roof area, we must not forget that the roof area is calculated not along the edges of the structure, that is, along the walls, but along the eaves.

The calculation of the area will be required not only for the “correct” execution of roofing, but also for the preparation of estimates for the purchase of building materials

Example of calculating roofing material for a gable roof

If you decide to independently calculate the amount of necessary material, first you need to decide on the choice of material and its size.

Take the following source data:

• gable roof;
• the length of each slope is 6 linear meters;
• 9.5 linear meters of skates.

With these parameters, the roof area will be 114 m 2 \u003d 2 x 9.5 x 6. The material of the coating will be a metal tile with polyester interprofile.

For calculations, you need data on the width and length of the sheets of metal, which depend on the type of interprofile:

• 1-wave interprofile: the value of the useful width is 1.1 m, length -0.35;
• 3-wave: 1.1 and 1.05 m, respectively;
• 6-wave: 1.1 and 2.1 m;
• 10-wave: 1.1 and 3.5 m.

To calculate the quantity and cost of materials for the roof device, you need to know the exact dimensions of the roof of the house

The calculation of the required number of sheets for the width of the slopes is carried out by dividing 9.5 m - the length of the ridge, 1.1 m - the useful width of the sheet. As a result, we get 8.63 sheets \u003d 9.5 / 1.1. The value is rounded up, as a result, 9 sheets are obtained.

Then, using the example of a 1-wave sheet, we calculate the number of sheets required along the length of the ramp. 6 m - the length of the ramp, divided by 0.35 m - the useful length of the sheet. As a result, we get 17.14 sheets. In this case, rounding can be done in the direction of reduction, since the remainder will be closed with an unspent extreme overlap. The result of the length expressed in the sheets will look like 6.09 \u003d 0.14 + 0.35 x 17.

Since there are 2 slopes, the number of sheets is also multiplied by 2. For the roof shown in the example, 18 sheets of different lengths are required:

• 3.62 m - for the upper row;
• 2.22 m - for the average;
• 0.47 m - for the bottom.

In cases of using a metal tile with a different number of waves, it is necessary in the calculations to replace the indicator of useful length.

Complex roofs require a professional approach

It is impossible to neglect roof calculations during construction, as this can lead not only to cost overruns, but also to damage or even destruction of the roof during operation of an already built house. And if the roof is gable, you can do it yourself. But roofs of complex shape require a professional approach.

The same applies not only to the cutting of the material, but also to the process of calculating the roof. If even gable roofs require a serious approach to calculations (which, at first glance, may seem quite simple), then intricate surfaces, roofs with many broken surfaces and the intersection of various planes, require a truly professional approach. And in this case, saving and the desire to fulfill everything without resorting to extraneous services often leads to unpleasant consequences. The best option would be to appeal to professionals with extensive experience in construction. Houses are not built for a year or two, so it’s hardly worth saving on the process of their construction.

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.

To determine the total roof area, one of two methods is most often used:

• 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 figures and summarize the results obtained.

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 involved in building a 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.