Metal tiles have become a popular covering material today due to their average cost and good operational characteristics. Such as durability, aesthetic appearance, resistance to mechanical stress and negative atmospheric conditions. Durability, reliability and versatility - it is used to cover roofs of any complexity. But before purchasing this roofing material and starting installation, you need to calculate required amount metal tiles taking into account the features and configuration of the roof.

How to calculate the number of metal tile sheets per roof

The calculation is easy to do. To do this you will need a tape measure and a calculator or an online program that will calculate required quantity sheets (or square meters) based on the data obtained during measurement. When choosing one or another type of metal tile, you need to take into account:

• roof area;
• metal tile shape;
• footage of overlaps of metal tile sheets.

Who doesn’t want to do the math, but is ready to spend more money, it may be easier to do - add 10% to the roof area and divide the resulting value by the area of ​​one sheet. But this approach is justified only when covering small and simple-shaped roofs. Otherwise, it is better to devote a few hours to the calculations than to incur unjustified and, moreover, considerable costs. Or use construction calculators.

Video: construction calculator for roof calculations

The area of ​​all roof elements should be calculated using the finished supporting system. Even with strict adherence to design values, deviations are possible during the construction of rafters.

Calculation of material for a pitched roof with metal tiles

Construction pitched roof- the simplest and lightest compared to other types of roofing. But the result is a reliable durable design, on which any covering material can be laid.

A house with a pitched roof made of metal tiles looks original

To calculate metal tiles, let’s take the following data as an example:

Let's do the calculation:

1. We calculate the number of metal tile sheets according to the width of the slope. To do this, divide the width of the slope by the useful width of the sheet: 6 / 1.1 = 5.45 ≈ 6 sheets.
2. We calculate the number of rows along the length of the slopes: 5.2 m + 0.07 m + 0.3 m + 0.15 m (overlap) = 5.72 m. Based on this, we see that it is more rational to use metal tile sheets with a length of 2.9 m, laid in 2 rows. Since 2.9 m * 2 = 5.8 m > 5.72 m, it means that the length of the sheets is chosen correctly.
3. As a result, it will take 12 = (6 * 2) sheets of 2.9 m each to cover the roof. You can, of course, replace them with six sheets 6.1 m long, but such sheets are more difficult to transport, and there will be more waste.

In addition, you will have to purchase:

When calculating a roof or covering material, all rounding is done towards a larger number.

Calculation of metal tiles for a gable roof

A roof structure with a slope of 12–15° is considered optimal for laying metal tiles. If the steepness of the slopes is less, then you will have to install enhanced waterproofing. With a larger angle of inclination, the pitch decreases and the number of fasteners increases. That is, in both cases, the costs of covering the roof with metal tiles will increase.

Noble covering material cherry color adorns a strict, uncomplicated design

With an asymmetrical roof structure, each slope is calculated separately, and the results are summed up.

We leave the initial data the same. We take into account that our roof has on one slope dormer window with dimensions:

The calculation process is as follows:

1. We calculate the number of sheets of metal tiles per element No. 1 - a whole slope. To do this, divide the slope area S = (5.23 + 0.07) * 6 = 31.8 m² by the usable area of ​​1 sheet of metal tile 2.9 m long: 31.8 m² / ((2.9 – 0.15) * 1.1)) = 10.5 pcs.
2. Since our slopes are the same, this means that 10.5 sheets of metal tiles will go to the second slope.
3. Total for both slopes you need: 10.5 * 2 = 21 sheets 2.9 meters long.
4. We determine the number of sheets for cladding the dormer window. Here you can use sheets 2.25 m long, which are cheaper.
5. The area of ​​the dormer window slopes is: 2.5 (base) * 1.4 (height) = 3.5. Because We have two sides, multiply by 2 = 7 m².
6. Useful area of ​​1 sheet 2.25 m long: (2.25 – 0.15) * 1.1 = 2.31 m².
7. We calculate the number of sheets: 7 / 2.31 = 3.03 ≈ 3 sheets.
8. To sum it up - just enough to cover gable roof with one dormer window you will need: 21 sheets of metal tiles 2.9 m long and 3 sheets 2.25 m long.

Additional elements and fastenings for installing metal tiles on a gable roof:

• skate 8 m (6 + 2) or 5 pcs.;
• cornice strip 12 m + 1 m (dormer window) or 7 pcs.;
• end strip 20.92 m or 11 pcs.;
• upper valleys 5 m or 3 pcs.;
• lower valleys 5 m or 3 pcs.;
• colored screws 4.8*35 two packs of 250 pcs. for fastening sheets;
• colored screws 4.8*50 150 pieces (1 pack) for fastening ridge and cornice elements.

Video: metal roofing - calculation of elements to order

Calculation of metal tiles for a hip roof

Hip roof - variety hipped roof, consisting of two triangular slopes and two trapezoid slopes. T which design presupposes the presence of a complex rafter system. Nevertheless, it is very popular due to its main advantages:

Since the height of the roof in our example is 4.5 m, accordingly, the length of the slopes, taking into account the slope, is 5.23 m. Knowing these values, we can calculate the length of the ridge using geometric formulas. In our example, the ridge is 0.8 m.

To calculate metal tiles for a hip structure, a diagram is required

In addition to the metal tile sheets you will need:

The total footage of all additional elements is calculated by adding all the lengths, taking into account the overlaps.

Varieties of hip construction

Varieties of hip construction are no less popular among private developers. In particular, the Dutch type of roof (half-hip). Calculate the amount of metal tiles to cover a half-hip roof in the same way as a full hip roof. The difference is only two triangular slopes, the area of ​​which will be smaller, which means that less covering material will be required.

A convenient roof configuration allows you to create a spacious and bright attic

Let’s say the length of the half-hip slopes is ⅓ less than the side ones. Let’s not complicate the calculation and separately calculate the area of ​​triangular slopes using geometric functions. We simply divide their total area by 3 and get the value for the half-hips: 22.5 m² / 3 = 7.5 m² with a length of side slopes of 1.74 m (5.23 / 3). Based on the calculations, we see that metal tile sheets of shorter length are suitable for covering two half-hips. This, of course, will reduce the cost of purchasing covering material.

So, to cover a half-hip structure you need to purchase:

• for finishing trapezoidal slopes with an area of ​​30.6 m² - 10 sheets of metal tiles 2.9 m long;
• and to cover two half-hips - 3.24 = (7.5 / 2.31) ≈ 4 sheets 2.25 m long. Additional elements are recalculated accordingly - the footage of the ridge and cornices is reduced, but end strips are added.

Hip roof

The hipped design is very suitable for square buildings, rectangular buildings with a slight difference between length and width, and round ones. In the first case, there will be four completely identical triangular-shaped slopes. In the second - the same two pairs of triangular slopes, with small deviations in area. And in the third - triangular slopes of equal area, the number of which is determined by the parameters of the building. A special feature of the tent structure is the absence of a ridge.

Hip roof ideal for square buildings

Let's calculate the amount of Monterrey metal tiles for this roof configuration, since it is also in great demand in suburban housing construction.

The initial data is the same as what we set at the very beginning. For a house measuring 5x6 m per covering hip roof metal tiles you will need:

1. To cover the first pair of slopes (along the length of the building), the area of ​​these two triangular slopes is 27 m² = (6 / 2 * 4.5 * 2). Their flooring will use 8.9 ≈ 9 sheets of metal tiles 2.9 m long.
2. To cover the second pair of slopes - along the width of the building - we calculate similarly: (5 / 2 * 4.5 * 2) / 3.03 ( effective area one sheet 2.9 m long) = 7.4 ≈ 8 sheets.
3. Let's calculate the cornice strips: 5 * 2 + 6 * 2 = 22 m or 11.5 ≈ 12 pieces.
4. We define ridge elements for facing ribs: 5.23 * 4 = 20.92 ≈ 21 m or 11–12 pieces.
5. Fastening elements at the rate of 7 screws per 1 m²: 49.5 * 7 = 350 pieces or 2 packages and 1 package for fixing ridge and cornice elements, which are fixed in increments of 12–13 cm.

Video: hip roof calculator - review of the Zhitov Calc program for Android

Broken hip (half-hip) roof

Broken hip or half-hip structures are less common due to the complexity of their arrangement. Although they look simply fascinating - you won’t look away for a long time, especially when the color scheme for the facade and roofing is skillfully selected.

The broken half-hipped mansard roof gives residential building amazing beauty

For further calculation of the covering material, the complex roof structure is divided into simple ones geometric figures

The results obtained are then summarized. In order not to get confused in the calculations, it is better to use an online calculator on the website of the seller of the selected roofing sheet or use special programs for calculating the roof.

Calculating slopes complex structures, there is no need to subtract the area of ​​bay windows, ledges, roof windows, etc. from the result. This will be a margin that, when calculating roofing material not taken into account.

Calculation of roofing material using an online calculator

1. We choose the roof shape - broken mansard gable.
2. We enter the dimensions upon request, focusing on our initial data - the length of the ridge (we have 6 m), the length of the side slope to the break line is 3.49 m (let's assume that on one slope the break line runs at a distance of ⅔ from the ridge). The length of the side slope after the break is, respectively, 5.23 – 3.49 = 1.74 m. We enter the data for the second slope in the same way - here, for example, we will make a break ⅓ from the ridge, that is, asymmetry. Then the length before the break will be 1.74 m, and after 3.49 m.
3. We choose the material - we chose metal tiles coated with MPE 0.5 matte polyester.
4. Click on the result and see the calculation of not only the quantity required material, and immediately the cost. So, according to our entered data, you will need 48 m² of metal tiles, 6 m of ridge, 12 m cornice strips and 16 m end. Self-tapping screws 48*35 250 pieces (2 packs) and 48*50 100 pieces (1 pack). In monetary terms, today the installation of roofing from metal tiles MPE 0.5 matte polyester on a broken line mansard roof will cost 22,760 rubles.

Video: instructions for the “Roof Calculation” program

The calculation took literally minutes. So the help of these programs is quite noticeable. To be more confident, you can make several identical calculations on different sites. They must match. In case of a small error, choose a larger result. Not by amount, of course, but by footage, since prices fluctuate depending on the seller and supplier of roofing materials.

Video: how much does a Grand Line metal tile roof cost in different coatings?

Calculation of roofing material using special programs

In addition to the online calculator, you can use more serious programs written for calculating the roof as a whole - the load-bearing (rafter) system and the enclosing (roofing pie). This is the “Roofing Pro” program known to builders, the SketchUp program, Zhitov Calc, which allows you to carry out calculations from an Android smartphone, etc.

Video: how to make a roof in Sketchup

The ArchiCad program deserves attention, with which you can model and calculate the entire house. Starting with the terrain and ending roofing covering- “Roof” section in ArchiCad.

Of course, you need to have computer knowledge at the level confident user Internet and construction basics. And then mastering any construction program will not be difficult. And the benefits will be great. Especially for those who are already building a house with their own hands, or are just thinking about their own country home.

Material standards for metal roofing

The use of metal tiles for roofing is profitable solution, if all measurements and calculations are made correctly. In addition, the roofs of the houses turn out to be very attractive. With the help of such material, you can smooth out the defects of the facade, or, on the contrary, you can emphasize its advantages. Multi-colored sheets of metal tiles on one roof will make it elegant, colorful, and eye-catching.

Metal tiles of different shades can be used on one roof

Dark colors in combination with a light facade will look impressive.

Dark colors of metal tiles are in great harmony with light facades

Neutral, calmer tones will give the house an impressive and good quality look. That is, metal tiles give scope to any imagination.

Calm grey colour metal tiles on the roof of the house give the entire structure a refined, strict and rich look

And in order for a metal tile roof to delight you for many years, you need to follow certain standards, installation and operation rules:

Installation of roofing under metal tiles is regulated by methodological documentation prescribed in MDS 12–47 of 2008 “Installation of metal tile roofing. Project of work production".

Table: the need for roofing materials when installing a roof under metal tiles

Name of materials	Unit	Consumption rate per 10 m2 of roofing	Requirement for 92 m 2 of roofing
Sheathing device:
boards 32*100 mm	m 3	0,12	1,1
bars (40–75)*(75–100) mm	m 3	0,06	0,55
Thermal insulation device:
thermal insulation boards mineral wool (thickness 100 mm)	m 3	1,11	10,21
anti-condensation film	m 2	1,05	97,0
vapor-proof film	m 2	1,05	97,0
Roof installation:
metal tiles	m 2	Direct calculation	98
sheet steel (0.7 mm) for valleys	m 2		10
end strip	m length		26
cornice strip	m length		15
ridge strip	m length		14

The need for roofing materials is determined based on standards and direct calculations. In addition, the need for equipment and tools is regulated by standards.

Table: need for technology and tools

Name	Type, brand, standard	Main settings	Purpose
Automotive crane	KS-3571	Load capacity 2.5 t, boom length 14.0 m	Lifting operations
Textile tape sling	TU 3150–010–16979227	Load capacity 3.0 t	Slinging a package of metal tiles
Traverse-grab	TR4 JSC "NIPI Promstalkonstruktsiya"	Load capacity up to 50.0 kg	Slinging a sheet of metal tiles
Electric scissors	S-424	The thickness of the cut sheet is up to 1 mm	Sheet cutting
Manual drilling machine	IE-1032	Hole diameter up to 8 mm	Drilling holes for screws
Steel tape measure	RZ-20, GOST 7502	Length 20 m	Dimensional control
Verification rod	VM-R-5.1	Length 2 m	Straightness control
Inventory fencing for the work site	GOST 23407	Height 1.6 m	Ensuring work safety
Safety belt with handrail	GOST R 50849	Handrail length 3 m

Video: calculating the cost of a metal roofing

Correct calculations of metal tiles, waterproofing materials, additional elements and fasteners guarantee the reliability of the roof and the durability of the house. Having drawn a roof plan, you can easily arrange it yourself, having 2-3 assistants. You just need to adhere to the specified calculations and standards, as well as comply with the installation conditions. And then the roof of a house of any design will be a feast for the eyes.

Metal tiles are in demand among the variety of modern roofing materials, and are used mainly in private construction for furnishing various roofs, both single-pitch and gable types, as well as roofs with complex structures. Due to its not the lowest cost, the calculation of metal tiles for the roof must be made as accurately as possible so that as a result there is enough material and there are not too many extra parts left.

Features of the material

Metal tiles can be classified as rigid roofing materials; they are characterized by high strength and durability. The wave contours of such a sheet are identical in shape natural tiles. Due to this, the roof of any building covered with metal tiles looks beautiful, and the useful life of such a coating exceeds 50 years.

Other advantages of using metal tiles include:

• Cost savings due to relatively low cost and long service life;
• Light weight - a square meter of metal tiles averages about 6 kg, so it is easy to transport and lift upwards; this does not require specialized equipment. Also, such a weight does not exert a significant load on the walls and foundation of the building and can be chosen as a roofing material even with a problematic foundation;
• No influence on the material external factors- the unique structure and structure of the material itself allows it to be used in areas with different climates. In addition, it is not affected by rays scorching sun, rain and snow, and hail and snow are also not afraid;
• A variety of colors, which allows you to realize different design ideas and projects;
• Strength, which provides the metal tile with the ability to withstand loads, both during its installation and after;
• Fire safety - it does not burn and does not support combustion.

And although some claim that metal tiles cause noise discomfort during rain, this is not at all true. At making the right choice the angle of the roof slope and compliance with the installation technology, no noise is heard during precipitation.

Metal tiles - no the best choice when arranging roofs of complex structures, since in this case it is necessary to cut the material, resulting in a lot of waste and no savings.

An important feature of installing a metal roof is the installation of sheathing. structures should be from 600 to 1000 mm, the distance between the sheathing bars is 350 mm. The sheathing is laid on waterproofing layer.

Varieties

Depending on the manufacturer, the dimensions of the sheets may vary, which should be taken into account when purchasing. There are several basic parameters, which are then used to calculate the number of sheets required for installation:

• Total length, which is measured between the edges of the edges. Its value can vary between 0.5 - 6 meters, depending on the manufacturer. The most popular option, with a length of 4.5 meters. Such metal tiles are convenient to transport and lift onto the roof, as well as to be used for installation;
• Full width, also measured between the other two edges and can range from 1160 to 1190 mm;
• Sheet thickness - maybe various sizes, depending on additional coverage protective layers. The most common option is sheets with a metal thickness of 0.5 mm. Thinner options are characterized by increased fragility, while thicker ones are not convenient to install and are used for buildings with large area roofs;
• Wave height and distance between adjacent waves. The standard wave pitch for all manufacturers is 185 mm, but the wave height varies between 0.5 - 0.7 mm;
• Symmetry and asymmetry. Waves can be either symmetrical or asymmetrical; the most popular are options with an asymmetrical structure.

There are also parameters that are required when calculating the number of sheets of metal tiles, which take into account the useful area of ​​the sheet and overlaps. These parameters include:

• Useful length. For most manufacturers it ranges from 1050 to 3500 mm. It takes into account the overlap of sheets and is 110 - 130 mm less than full meaning due to the fact that during installation the sheets overlap each other;
• Usable width. It usually ranges from 60 to 80 mm, and provides reliable protection from water and snow entering the room.

Attention! Metal tile sheets have an upper and lower part, which should be taken into account during installation. If during installation they are turned over and placed differently, there will be a lot of waste and the complexity of the work will increase.

In addition to sheets, they also produce additional elements, which also have their own specific dimensions:

Installation of metal tiles is carried out using roofing self-tapping screws.

Calculation of elements

The calculation of elements for installing a metal roof depends on the complexity of the roof structure. First, calculate the surface area of ​​the roof. If it has a complex structure, it is divided into simple figures, the area of ​​which can be calculated by knowing geometric formulas. Then the areas of all the figures are added up, and the total roof area is obtained.

Important! The roof area is calculated taking into account the length of the roof slope, and not the dimensions of the building.

Depending on the dimensions of the metal tile sheets that were purchased, their usable area should also be calculated. It is determined by calculation formula to determine the area of ​​a rectangle, since the sheets have an identical shape. Moreover, some stores offer a service for cutting sheets according to parameters specified by the buyer.

The resulting roof area must be divided by the usable area of ​​one sheet. This value will indicate the number of sheets of material required. It is imperative to include a reserve in the calculations, which should be at least 5%. It is necessary in cases where the sheets may have been cut incorrectly, or the value has not been rounded up when calculating.

To calculate the ridge, the length of the roof should be divided by the useful length of the element - 1.9 meters, and the resulting value should be rounded up. To calculate the wind profile, the useful length is also taken, the calculation is similar. You just need to take into account the number of slopes on which this element will be installed and multiply its value by this figure.

To calculate fastening elements, you should take into account the area of ​​the roof, and take self-tapping screws based on the fact that about 6-8 self-tapping screws are required per 1 square meter of metal tiles. Depending on the choice of the manufacturer, the types of fastening elements may differ; they are usually specified by the manufacturer of the metal tile. In addition, for additional elements, the number of fastening screws is calculated based on the fact that their fastening step will be 12-13 cm.

Complex roof structures

A complex roof requires a more detailed description of the calculations. In this case, all roof elements are drawn on paper and divided into simple geometric shapes.

Cutting the material into simple rectangular elements is not difficult, and no a large number of waste. But when cutting diagonally, the amount of waste increases significantly. This must be taken into account when calculating.

When calculating the number of sheets and additional elements, one should take into account their useful dimensions, which, when laid with an overlap, are usually reduced by 10-15 cm.

On this moment There are a large number of special calculators on the Internet that offer to calculate the material after entering some parameters. But in most cases, such calculations turn out to be inaccurate and with large errors. Therefore, independent calculation will help you save money and correctly calculate the volume of materials, especially since it is not complicated and does not require knowledge of special formulas. You just need to take into account the parameters of the overlaps.

Metal tiles have become a popular covering material today due to their average cost and good performance characteristics. Such as strength, aesthetic appearance, resistance to mechanical stress and negative atmospheric conditions. Durability, reliability and versatility - it is used to cover roofs of any complexity. But before purchasing this roofing material and starting installation, you need to calculate the required amount of metal tiles, taking into account the features and configuration of the roof.

How to calculate the number of metal tile sheets per roof

The calculation is easy to do. To do this, you will need a tape measure and a calculator or an online program that will calculate the required number of sheets (or square meters) based on the data obtained during measurement. When choosing one or another type of metal tile, you need to take into account:

• roof area;
• metal tile shape;
• footage of overlaps of metal tile sheets.

Those who don’t want to do the calculations, but are ready to spend more money, can do it easier - add 10% to the roof area and divide the resulting value by the area of ​​one sheet. But this approach is justified only when covering small and simple-shaped roofs. Otherwise, it is better to devote a few hours to the calculations than to incur unjustified and, moreover, considerable costs. Or use construction calculators.

Video: construction calculator for roof calculations

The area of ​​all roof elements should be calculated using the finished supporting system. Even with strict adherence to design values, deviations are possible during the construction of rafters.

Calculation of material for a pitched roof with metal tiles

Construction of a pitched roof is the simplest and easiest compared to other types of roofs. But the result is a reliable, durable structure on which any covering material can be laid.

A house with a pitched roof made of metal tiles looks original

To calculate metal tiles, let’s take the following data as an example:

Let's do the calculation:

1. We calculate the number of metal tile sheets according to the width of the slope. To do this, divide the width of the slope by the useful width of the sheet: 6 / 1.1 = 5.45 ≈ 6 sheets.
2. We calculate the number of rows along the length of the slopes: 5.2 m + 0.07 m + 0.3 m + 0.15 m (overlap) = 5.72 m. Based on this, we see that it is more rational to use metal tile sheets with a length of 2.9 m, laid in 2 rows. Since 2.9 m * 2 = 5.8 m > 5.72 m, it means that the length of the sheets is chosen correctly.
3. As a result, it will take 12 = (6 * 2) sheets of 2.9 m each to cover the roof. You can, of course, replace them with six sheets 6.1 m long, but such sheets are more difficult to transport, and there will be more waste.

In addition, you will have to purchase:

When calculating a roof or covering material, all rounding is done towards a larger number.

Calculation of metal tiles for a gable roof

A roof structure with a slope of 12–15° is considered optimal for laying metal tiles. If the steepness of the slopes is less, then you will have to install enhanced waterproofing. With a larger angle of inclination, the pitch decreases and the number of fasteners increases. That is, in both cases, the costs of covering the roof with metal tiles will increase.

Covering material of noble cherry color adorns the strict, simple design

With an asymmetrical roof structure, each slope is calculated separately, and the results are summed up.

We leave the initial data the same. We take into account that our roof has a dormer window with dimensions on one slope:

The calculation process is as follows:

1. We calculate the number of sheets of metal tiles per element No. 1 - a whole slope. To do this, divide the slope area S = (5.23 + 0.07) * 6 = 31.8 m² by the usable area of ​​1 sheet of metal tile 2.9 m long: 31.8 m² / ((2.9 – 0.15) * 1.1)) = 10.5 pcs.
2. Since our slopes are the same, this means that 10.5 sheets of metal tiles will go to the second slope.
3. Total for both slopes you need: 10.5 * 2 = 21 sheets 2.9 meters long.
4. We determine the number of sheets for cladding the dormer window. Here you can use sheets 2.25 m long, which are cheaper.
5. The area of ​​the dormer window slopes is: 2.5 (base) * 1.4 (height) = 3.5. Because We have two sides, multiply by 2 = 7 m².
6. Useful area of ​​1 sheet 2.25 m long: (2.25 – 0.15) * 1.1 = 2.31 m².
7. We calculate the number of sheets: 7 / 2.31 = 3.03 ≈ 3 sheets.
8. To summarize - in total, to cover a gable roof with one dormer window you will need: 21 sheets of metal tiles 2.9 m long and 3 sheets 2.25 m long.

Additional elements and fastenings for installing metal tiles on a gable roof:

• skate 8 m (6 + 2) or 5 pcs.;
• cornice strip 12 m + 1 m (dormer window) or 7 pcs.;
• end strip 20.92 m or 11 pcs.;
• upper valleys 5 m or 3 pcs.;
• lower valleys 5 m or 3 pcs.;
• colored screws 4.8*35 two packs of 250 pcs. for fastening sheets;
• colored screws 4.8*50 150 pieces (1 pack) for fastening ridge and cornice elements.

Video: metal roofing - calculation of elements to order

Calculation of metal tiles for a hip roof

A hip roof is a type of hip roof, consisting of two triangular slopes and two trapezoid slopes. T This design requires the presence of a complex rafter system. Nevertheless, it is very popular due to its main advantages:

Since the height of the roof in our example is 4.5 m, accordingly, the length of the slopes, taking into account the slope, is 5.23 m. Knowing these values, we can calculate the length of the ridge using geometric formulas. In our example, the ridge is 0.8 m.

To calculate metal tiles for a hip structure, a diagram is required

In addition to the metal tile sheets you will need:

The total footage of all additional elements is calculated by adding all the lengths, taking into account the overlaps.

Varieties of hip construction

Varieties of hip construction are no less popular among private developers. In particular, the Dutch type of roof (half-hip). Calculate the amount of metal tiles to cover a half-hip roof in the same way as a full hip roof. The difference is only two triangular slopes, the area of ​​which will be smaller, which means that less covering material will be required.

A convenient roof configuration allows you to create a spacious and bright attic

Let’s say the length of the half-hip slopes is ⅓ less than the side ones. Let’s not complicate the calculation and separately calculate the area of ​​triangular slopes using geometric functions. We simply divide their total area by 3 and get the value for the half-hips: 22.5 m² / 3 = 7.5 m² with a length of side slopes of 1.74 m (5.23 / 3). Based on the calculations, we see that metal tile sheets of shorter length are suitable for covering two half-hips. This, of course, will reduce the cost of purchasing covering material.

So, to cover a half-hip structure you need to purchase:

• for finishing trapezoidal slopes with an area of ​​30.6 m² - 10 sheets of metal tiles 2.9 m long;
• and to cover two half-hips - 3.24 = (7.5 / 2.31) ≈ 4 sheets 2.25 m long. Additional elements are recalculated accordingly - the footage of the ridge and cornices is reduced, but end strips are added.

Hip roof

The hipped design is very suitable for square buildings, rectangular buildings with a slight difference between length and width, and round ones. In the first case, there will be four completely identical triangular-shaped slopes. In the second - the same two pairs of triangular slopes, with small deviations in area. And in the third - triangular slopes of equal area, the number of which is determined by the parameters of the building. A special feature of the tent structure is the absence of a ridge.

Hip roof is ideal for square buildings

Let's calculate the amount of Monterrey metal tiles for this roof configuration, since it is also in great demand in suburban housing construction.

The initial data is the same as what we set at the very beginning. For a house measuring 5x6 m, to cover a hipped roof with metal tiles you will need:

1. To cover the first pair of slopes (along the length of the building), the area of ​​these two triangular slopes is 27 m² = (6 / 2 * 4.5 * 2). Their flooring will use 8.9 ≈ 9 sheets of metal tiles 2.9 m long.
2. To cover the second pair of slopes - along the width of the building - we calculate similarly: (5 / 2 * 4.5 * 2) / 3.03 (useful area of ​​one sheet 2.9 m long) = 7.4 ≈ 8 sheets.
3. Let's calculate the cornice strips: 5 * 2 + 6 * 2 = 22 m or 11.5 ≈ 12 pieces.
4. We determine the ridge elements for facing the ribs: 5.23 * 4 = 20.92 ≈ 21 m or 11–12 pieces.
5. Fastening elements at the rate of 7 screws per 1 m²: 49.5 * 7 = 350 pieces or 2 packages and 1 package for fixing ridge and cornice elements, which are fixed in increments of 12–13 cm.

Video: hip roof calculator - review of the Zhitov Calc program for Android

Broken hip (half-hip) roof

Broken hip or half-hip structures are less common due to the complexity of their arrangement. Although they look simply fascinating - you won’t look away for a long time, especially when the color scheme for the facade and roofing is skillfully selected.

A broken mansard half-hipped roof gives a residential building amazing beauty

For further calculation of the covering material, the complex roof structure is broken down into simple geometric shapes

The results obtained are then summarized. In order not to get confused in the calculations, it is better to use an online calculator on the website of the seller of the selected roofing sheet or use special programs for calculating the roof.

When calculating the slopes of complex structures, you do not need to subtract the area of ​​bay windows, ledges, roof windows, etc. from the result. This will be a reserve that is not taken into account when calculating the roofing material.

Calculation of roofing material using an online calculator

1. We choose the roof shape - broken mansard gable.
2. We enter the dimensions upon request, focusing on our initial data - the length of the ridge (we have 6 m), the length of the side slope to the break line is 3.49 m (let's assume that on one slope the break line runs at a distance of ⅔ from the ridge). The length of the side slope after the break is, respectively, 5.23 – 3.49 = 1.74 m. We enter the data for the second slope in the same way - here, for example, we will make a break ⅓ from the ridge, that is, asymmetry. Then the length before the break will be 1.74 m, and after 3.49 m.
3. We choose the material - we chose metal tiles coated with MPE 0.5 matte polyester.
4. Click on the result and see a calculation of not only the amount of material needed, but also the cost. So, according to our entered data, we will need 48 m² of metal tiles, 6 m of ridge, 12 m of eaves strips and 16 m of end strips. Self-tapping screws 48*35 250 pieces (2 packs) and 48*50 100 pieces (1 pack). In monetary terms, today laying a roof covering made of MPE 0.5 matte polyester metal tiles on a broken attic roof will cost 22,760 rubles.

Video: instructions for the “Roof Calculation” program

The calculation took literally minutes. So the help of these programs is quite noticeable. To be more confident, you can make several identical calculations on different sites. They must match. In case of a small error, choose a larger result. Not by amount, of course, but by footage, since prices fluctuate depending on the seller and supplier of roofing materials.

Video: how much does a Grand Line metal tile roof cost in different coatings?

Calculation of roofing material using special programs

In addition to the online calculator, you can use more serious programs written for calculating the roof as a whole - the load-bearing (rafter) system and the enclosing (roofing pie). This is the “Roofing Pro” program known to builders, the SketchUp program, Zhitov Calc, which allows you to carry out calculations from an Android smartphone, etc.

Video: how to make a roof in Sketchup

The ArchiCad program deserves attention, with which you can model and calculate the entire house. Starting with the terrain and ending with the roofing - the “Roof” section in ArchiCad.

Of course, you need to have computer knowledge at the level of a confident Internet user and construction basics. And then mastering any construction program will not be difficult. And the benefits will be great. Especially for those who are already building a house with their own hands, or are just thinking about their own country home.

Material standards for metal roofing

Using metal tiles to cover roofs is a profitable solution if all measurements and calculations are made correctly. In addition, the roofs of the houses turn out to be very attractive. With the help of such material, you can smooth out the defects of the facade, or, on the contrary, you can emphasize its advantages. Multi-colored sheets of metal tiles on one roof will make it elegant, colorful, and eye-catching.

Metal tiles of different shades can be used on one roof

Dark colors in combination with a light facade will look impressive.

Dark colors of metal tiles are in great harmony with light facades

Neutral, calmer tones will give the house an impressive and good quality look. That is, metal tiles give scope to any imagination.

The calm gray color of the metal tiles on the roof of the house gives the entire structure a sophisticated, strict and rich look.

And in order for a metal tile roof to delight you for many years, you need to follow certain standards, installation and operation rules:

Installation of roofing under metal tiles is regulated by methodological documentation prescribed in MDS 12–47 of 2008 “Installation of metal tile roofing. Project of work production".

Table: the need for roofing materials when installing a roof under metal tiles

Name of materials	Unit	Consumption rate per 10 m2 of roofing	Requirement for 92 m 2 of roofing
Sheathing device:
boards 32*100 mm	m 3	0,12	1,1
bars (40–75)*(75–100) mm	m 3	0,06	0,55
Thermal insulation device:
thermal insulation boards mineral wool (thickness 100 mm)	m 3	1,11	10,21
anti-condensation film	m 2	1,05	97,0
vapor-proof film	m 2	1,05	97,0
Roof installation:
metal tiles	m 2	Direct calculation	98
sheet steel (0.7 mm) for valleys	m 2		10
end strip	m length		26
cornice strip	m length		15
ridge strip	m length		14

The need for roofing materials is determined based on standards and direct calculations. In addition, the need for equipment and tools is regulated by standards.

Table: need for technology and tools

Name	Type, brand, standard	Main settings	Purpose
Automotive crane	KS-3571	Load capacity 2.5 t, boom length 14.0 m	Lifting operations
Textile tape sling	TU 3150–010–16979227	Load capacity 3.0 t	Slinging a package of metal tiles
Traverse-grab	TR4 JSC "NIPI Promstalkonstruktsiya"	Load capacity up to 50.0 kg	Slinging a sheet of metal tiles
Electric scissors	S-424	The thickness of the cut sheet is up to 1 mm	Sheet cutting
Manual drilling machine	IE-1032	Hole diameter up to 8 mm	Drilling holes for screws
Steel tape measure	RZ-20, GOST 7502	Length 20 m	Dimensional control
Verification rod	VM-R-5.1	Length 2 m	Straightness control
Inventory fencing for the work site	GOST 23407	Height 1.6 m	Ensuring work safety
Safety belt with handrail	GOST R 50849	Handrail length 3 m

Video: calculating the cost of a metal roofing

Correct calculations of metal tiles, waterproofing materials, additional elements and fasteners guarantee the reliability of the roof and the durability of the house. Having drawn a roof plan, you can easily arrange it yourself, having 2-3 assistants. You just need to adhere to the specified calculations and standards, as well as comply with the installation conditions. And then the roof of a house of any design will be a feast for the eyes.

When laying a roof, it is important to correctly calculate the required amount of roofing material. Especially if a metal roof is used. The calculation of metal tiles for the roof, unlike other covering materials, has some characteristics, which may cause some problems. Therefore, you need to be able to correctly calculate the required amount of coverage for your home.

The main features of the dimensions of metal tiles

Before using this material for installation, you should pay attention to main feature– wave inhomogeneity. The entire length of the wave has differences, smooth increases and decreases, which do not allow one to determine the exact length of the sheet.

However, wave heterogeneity has an effect only indirectly during overlap. It follows from this that the usable area depends on the shape of the material.

Important! It is worth highlighting the main feature metal roofing, which concerns its dimensions, especially length. Whatever the length, it is always a multiple of 5 mm, and the sheet itself can have a length from 80 to 800 cm.

The most popular are segments with the following length dimensions - 362 and 363 centimeters, 222 and 223 cm. The overlap of these segments is 12 and 13 centimeters. It is also worth paying attention to the common width sizes of this material - 116, 118, 119 centimeters. The overlap of this group of sizes is 9.8.6 centimeters.

How to calculate area

A standard hip roof, which has four end slopes, is usually made of metal tiles, but before equipping it, it is worth determining in advance the required quantity roofing. Usually its quantity is laid down at the stage of design and estimate documentation.

The calculation of a metal tile roof can be done independently or using a special online calculator A. If you use an online calculator, then using it you can determine not only the required amount of material, but also calculate the cost of all the necessary products.

But it is worth noting that the roof calculator can be used for the following types of structures:

• For a pitched roof;
• For a gable roof with equal or different slopes;
• For three-slope;
• For hipped roof from metal tiles;
• For a multi-slope roof;
• To cover mansard type;
• For a hip roof with identical slopes (hip roof made of metal tiles).

The calculation of the amount of metal tiles is carried out taking into account the following requirements:

1. Before calculating the required material, it is worth assessing the entire scope of the work being carried out. This can be done even without taking into account the dimensions of the sheets that will be purchased for covering;
2. Regardless of what kind of house covering will be - cold roof or a warm roof made of metal tiles, it is necessary to measure the length of the slopes;
3. Next, measure the width of the slopes from the ridge to the overhang of the eaves;
4. For cold roof, hip, attic, it is necessary to take measurements of the ribs;
5. After this, it is worth finding out what shape the future roof will be, namely what type of geometric figure will be used when constructing the covering - triangle, trapezoid, rectangle.

The roof is often arranged in the form of a triangular or rectangular shape, in rare cases it is made in the form of trapezoids. But regardless of this, you need to know the formula for calculating the coverage area.

Formulas for different types roofs:

• For rectangular shapes the formula is used - S=LW, where L is the length, W is the width of the slope$
• For a trapezoidal covering, a slightly different calculation formula is used - S=h(A+B)/2, where A is the length of the overhang, B is the length of the ridge, and h is the distance between the overhang and the ridge;
• For triangular ones it is used following formula– S=ab/2, where a and b are legs.

Determining the number of sheets

Important! Regardless of what type of roof it is - gable, hipped, tri-sloped, it is necessary to correctly calculate the required amount of material. Its calculations can be done online in a calculator using the necessary formulas.

The main thing is to know the dimensions of the future coating; using these indicators you can easily calculate the amount of metal tiles. The thing is that initially you have to deal with a rectangle, which later takes on the appearance of the required shape.

Therefore on initial stage you can use the formula for a rectangular roof. Next, the resulting area must be previously divided by the dimensions of the sheet and metal tile calculations performed online using a calculator. The resulting dimensions can be used to purchase the required product. It is advisable to add another 5-10% to the size.

Beautiful and durable metal tiles are a popular roofing material. To ensure that as little waste as possible remains after installation, an accurate calculation of the number of sheets is necessary.
The simple shape of the roof guarantees almost waste-free installation; the more complex the configuration of the slopes, the more you will have to cut off and throw away.

When planning to order materials, measure the dimensions of the roof slopes, draw a detailed diagram, where each part of the complex slope is depicted as a separate plane, and indicate the dimensions of each of them.

Calculation of metal tiles for a pitched roof

The slope of such a roof consists of a flat rectangular plane. The metal tile sheet has a clear rectangular shape, with the upper and lower parts clearly marked on it.

There are full and usable sizes. The useful value does not take into account the overlap; it is this value that is used in calculations. Whatever the amount of overlap, it will not affect the result of the calculations.

Determining the dimensions of a metal profile sheet

The length of each sheet is a multiple of a certain number of embossed waves of 35 cm. By multiplying the wave length by their number vertically, the required sheet length is obtained.

If the roof slope is a simple rectangle, calculate as follows:

1) The width of the slope must be divided by the width of the sheet; the resulting number is the number of sheets of metal tiles in each row, oriented horizontally;

2) To calculate the height, the height of the slope is divided by the wavelength, in our case - 35 cm; the resulting number of waves is divided by their number on one sheet; rounding is performed upward;

3) If the slope rises low, the angle of rise is less than 14 degrees, an overlap of two waves is used to strengthen the roof. This is taken into account when calculating: total number waves are added one per row.

4) Knowing the number of sheets in a row, find out the number of sheets per slope.

Calculation example
If the slope has a size of 10 x 6 meters, and the width of the sheet is 1 m 5 cm. Divide the width of the slope by the useful width of the sheet: 10: 1 m 5 cm = 10 rows. The remainder will have to be cut off when the size of the gable overhang is determined during the work.
In the vertical rows, we focus on the initially accepted wavelength of 35 cm: we divide 6 meters of slope by 0.35 m of one wave, for a total of 18 waves. This means that 3 sheets of 6 waves each will fit vertically on the slope. The product for the entire slope: 10 rows must be multiplied by 3 sheets in each, you get 30 sheets.

Calculation of metal roofing for a gable roof

The number of elements obtained for one slope is doubled.

When making calculations, do not forget about an important component of the roof, such as. First, choose the type of insulation that is suitable for your roof.

To start making calculations, you can check existing sizes metal tile sheet, and also learn more about its main characteristics.

Calculation of the quantity of rolled insulation materials

Don’t forget about insulation and the correct sequence of its installation on the roof

To know exactly how much material to order for rolled hydro- and vapor barrier, you need to divide the width of the slope by the width of the film, taking into account an overlap of 15 cm, you get the number of rows, the length of each corresponds to the length of the slope. By multiplying the length of the row by their number, you get the number in meters roll material on one slope.

Calculation of roofing material for a complex roof configuration

Various options multi-pin type roofing

Most scraps are obtained after cutting sheets of metal tiles diagonally. The correct calculation of the quantity helps to make a scan: an image on paper of the figures formed by the slopes of the roof - rectangles, triangles, trapezoids.

Rectangular elements are the simplest and waste-free, as can be seen in the example of single-, gable- and sloping roofs.

This type of roof consists of four regular rectangles, two of them on each slope. It is not difficult to calculate how much metal tile material is required for such a roof. An example is a pitched roof.

hip

The roof has four slopes, on two sides they are triangular in shape, on the other two they are trapezoidal. When performing a scan, each slope is first drawn in the form of a rectangle, drawing on it the contours of a trapezoid and a triangle. This drawing clearly shows the diagonal cutting lines of the sheets and the amount of waste that is not useful on the roof.

Tent

Four triangular slopes converging at a common point. Hip roofs generate the most metal tile waste.

Multi-pinch

This is the most complex type of configuration, consisting of two or more gable roofs: rectangles, trapezoids, triangles and parallelograms. Only a rectangle and a parallelogram do not produce waste. When laying tiles on a parallelogram slope, the pieces cut diagonally on one side will fall into the corresponding places on the opposite side of the slope.

By breaking down the elements of a multi-gable roof into simple geometric shapes, you can see how much waste is generated during the work process.

When all the calculations have been made and it’s time to move on to the practical part, first stock up useful tools. Find out how to do it right.

If you are just starting construction and still have doubts about choosing a roof covering between soft roof and metal tiles, be sure to check out. You can compare ondulin and metal tiles. Our specialists will help you with your choice.

Calculation of additional elements

Examples of possible additional roofing elements different types roofs

The elements covering the ridge, located at the convergence of the ribs and horizontal edges of the slopes, are calculated as follows: the total length of the ridge and ribs is measured, seven to ten percent is added to it to make an overlap.

The lower valley (aka internal) is installed at the point where the inner side edges of the slopes meet. The upper paired element is decorative; it covers the inner one. The length of both is calculated by measuring the length of the converging edges and adding 10% to it for overlaps.

It goes along the entire contour of the cornices. The measurement of this perimeter is the basis of the calculation.

The end strip is equal to the length of all roof ends.

The sealing strip required in the spaces between the ridge and valley is taken with a reserve.

Metal tile calculations online

There is a convenient service on the websites of construction and materials selling companies - construction calculator, where you can calculate the amount of metal tiles per roof. For example, one of these calculators is available at this link - http://www.tstn.ru/catalog/docs/podbory/raschet.php. It's easy to use:

• Select roof type
• Specify the length and width of each slope
• Get the full result - the number of metal tiles, valleys, ridge and end strip, the required number of screws and the total cost of materials

The video at the end of the article will help you use the calculator.

Video instructions on calculating metal tiles for ordering