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: one for each row is added to the total number of waves.
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 the existing dimensions of the metal tile sheet, as well as learn more about its main characteristics.
Calculation of the quantity of rolled insulating 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 both sides they triangular shape, from the other two - trapezoids. 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 on 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 strips, 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
Metal tiles have become a popular covering material today due to their average cost and good performance 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 the required amount of metal tiles, taking into account the features and configuration of the roof.
How to calculate the number of sheets of metal tiles 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 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:
- 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.
- 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.
- 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 on one slope dormer window with dimensions:
The calculation process is as follows:
- 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.
- Since our slopes are the same, this means that 10.5 sheets of metal tiles will go to the second slope.
- Total for both slopes you need: 10.5 * 2 = 21 sheets 2.9 meters long.
- We determine the number of sheets for cladding the dormer window. Here you can use sheets 2.25 m long, which are cheaper.
- 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.
- Useful area of 1 sheet 2.25 m long: (2.25 – 0.15) * 1.1 = 2.31 m².
- We calculate the number of sheets: 7 / 2.31 = 3.03 ≈ 3 sheets.
- 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) 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 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 the 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. Accordingly, the additional elements are recalculated - 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:
- 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.
- 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.
- Let's calculate the cornice strips: 5 * 2 + 6 * 2 = 22 m or 11.5 ≈ 12 pieces.
- We determine the ridge elements for facing the ribs: 5.23 * 4 = 20.92 ≈ 21 m or 11–12 pieces.
- 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 - for a long time you won’t look away, 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 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, there is no need to subtract the area of bay windows, projections, skylights etc. This will be a reserve that is not taken into account when calculating the roofing material.
Calculation of roofing material using an online calculator
- We choose the roof shape - broken mansard gable.
- 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.
- Choosing a material - we chose metal tiles coated with MPE 0.5 matte polyester.
- 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, 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 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, naturally, but by footage, since prices fluctuate depending on the seller and supplier 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 to calculate 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
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 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 on the basis of standards and direct calculation. 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 OJSC "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 rack | 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 tile roof
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 plan for the roof, 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 amount of 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. 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 a hipped roof made of 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:
- 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;
- Regardless of what the house will be covered with - a cold roof or a warm roof made of metal tiles, it is necessary to measure the length of the slopes;
- Next, measure the width of the slopes from the ridge to the overhang of the eaves;
- For a cold roof, hip, attic, it is necessary to take measurements of the ribs;
- After this, it’s worth finding out what shape the future roof will be, namely what type geometric figure will be used in the construction of 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, the following formula is used: S=ab/2, where a and b are the 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.
Metal tiles are one of the main roofing materials. Online calculator serves to calculate the approximate cost of metal tiles. This service will be convenient and necessary for many users, because it allows you to preliminary estimate costs and compare different coating options.
Roofing materials for roofs vary in technical and operational properties. The shape of the roof can be different, it can be single-slope, gable, or hipped. In order to calculate the cost on the website, you just need to enter the initial data.
Types of roofs and roofing made of metal tiles
- Single-pitch roof. The single sloped plane and the simplicity of the device are the undoubted advantages of the design. IN low-rise construction This type of roofing is used relatively rarely in houses. Particularly suitable as a roofing system for high-tech buildings.
- Gable roof under metal tiles. Two pitched planes are a standard solution for most houses and buildings. The slopes can be symmetrical or asymmetrical (with different shapes and the angle of inclination of the slopes).
- Four-slope metal roof. There are no fronts at the ends; triangular slopes are used. The design is impressive and presentable, reliably protects from bad weather and heats up evenly. Atmospheric precipitation has little impact on the structure. A hip roof made of metal tiles (hatched) has limited space under it, perhaps this is its only serious drawback.
- Warm roof. The attic or attic is insulated for use as a living space. Also, additional protection of the roof from cold and bad weather allows you to increase the thermal insulation of the entire house.
- Cold roof. The design does not contain layers of insulation; other protective materials are often not used (from wind, humidity, steam, condensation). Cold roof more economical, while the attic or attic cannot be used as living space in the winter.
How to calculate the cost of metal tiles online
The roof consists of several main structural elements. The top covering (metal tiles) serves as the final decorative and protective layer.
The price of materials is determined based on the selected metal tile coating. An online roofing calculator is a great tool for determining costs and comparing different roofing options.
When calculated, the price on the calculator includes additional elements, such as: ridge, wind and cornice strips, as well as self-tapping screws. In this case, the calculation serves as a guide.
Before calculating the price of metal roofing tiles, it is worth deciding on the manufacturer, name of the material, and type of coating. The sheet profile can have different dimensions in length and width, have different thicknesses and decorative and protective coatings. This must be taken into account when calculating the amount of metal tiles for a roofing system.
Professional calculation of roofing systems in the company “Turnkey Roofing”
Each type of material has its own specifics and cost. Preliminary calculation of a metal tile roof allows you to select the optimal sheet profile for the customer’s needs. The consumer can order the services of a “Turnkey Roofing” surveyor when deciding to purchase roofing materials.
Take advantage of the calculator for calculating metal roof tiles on our website for subsequent ordering of the material and installation of the roofing system.
Our company carries out installation work on roofing and offers materials with delivery in Moscow and the Moscow region. Roofing tiles can be purchased with delivery to different regions Russian Federation. Warehouses are located in close proximity to the Moscow Ring Road.
If, of all the roofing materials, you have chosen metal tiles, then the first question that will arise is how much metal tiles you need to purchase. This is logical, because before starting work on roof cladding, you must purchase the required amount of metal tiles. This is not as difficult to do as it seems. You only need to follow some rules, know the area of the roof itself, as well as the dimensions of each sheet. Having all this data, you can easily calculate how many tiles you will need to cover your home. This is exactly what we will do.
You will learn how to correctly calculate metal roof tiles so that there are no extra parts left or you don’t have to go for additional consumables.
Rules for calculating metal roofing tiles
Metal tiles are a convenient and practical type of roofing. The good news is that she is easy to work with. The profiles themselves are large, so installation is quite easy. I would like to say right away that product manufacturers make metal tiles standard sizes. They can be divided into two types:
- overall length and width;
- useful (working) length and width.
General indicators are the distance from one edge of the metal tile to the other. The minimum length is 40 cm, the maximum is 8 m. The width of the metal tile is from 1.16 to 1.19 m. But, since in practice the parts are overlapped, a working length and width are required. This distance does not include overlap. Typically, the vertical overlap is from 10 to 15 cm. The horizontal overlap is 6 or 8 mm. It turns out that usable width is 1.11 m. But, if the roof has a slope of less than 8 m, then you can use one large sheet rather than joining several in a vertical position. So, knowing the working width, you can perform the correct calculation. Let's look at everything with an example.
Determining the quantity
To do the calculations you must have a calculator. If you do not know the width and length of the roof slope, then it needs to be measured. After all, the sheets of metal tiles will be attached from the ridge to the edge of the slope, so the length of the material will be almost identical to the slope from top to bottom. There will only be 5 cm left for the overhang. It is easy to take measurements when the roof structure is simple, for example, gable or shed. If the option is more complicated, it is better to invite a professional measurer who will do all the work.
Note! Metal tiles are a specific coating. It's not symmetrical. What does it mean? And the fact is that the profile can only be laid in one direction during the installation process. You cannot turn it 180˚ and use it in that position. In this regard, when working on a complex roof, there will be more waste of metal tiles. This is important to consider when purchasing.
What is required for calculations? You must figure out how many rows will fit on one roof slope. It's not that difficult. Then, all that remains is to find out the number of profiles in one row. And then everything is generally simple. At first glance, it may seem that calculating the quantity is difficult and time-consuming, but this is not so. It’s better to do everything in advance so you don’t regret it later.
We count the number of rows on the roof slope
All you need is the width of the slope and working width profile. The total width of the slope is divided by the working width of the profile, and the finished figure is rounded up. Let's say you measured the roof along the ridge, and you got 10 m. And you also know that the working width of the profile sheet is 1.1 m.
Note! Each manufacturer indicates the working width and length of the material in the instructions for their product.
How many rows will there be then? 10÷1.1 = 9.09. It becomes clear that for your roof, 10 m long, you will need 9 rows of metal tiles, the working width of which is 1.1 m. We found out the first indicator. Now let's move on to the number of profiles in the rows.
Number of metal tiles in one row and their length
To find out, calculate the length of one roof element and the length of the overhang. We talked about the fact that they come from 40 cm to 8 m. It is very good to work with long sheets, since they leave a minimum of waste. But, they are extremely problematic both to deliver to the site and to the roof. That's why the best option It is generally accepted that the size of one profile is from 4 to 4.5 m. They are simple and convenient to work with, delivery can be carried out by ordinary transport, and it will be more difficult to damage the material.
So, by calculating the size of the overhang from the eaves to the ridge, you get, for example, 6 m. Now, knowing the dimensions of the metal tiles, you can find out their number in one row and, most importantly, the size of each profile. For 6 m, laying one profile will be problematic. You need to use two. Now we find out the required size of the first and second sheets. You need to use the formula: X=A+B+C, where A is our length of the slope, B is the overhang at the eaves, C is the vertical overlap of the metal tile. Typically, the overhang of the eaves is 5 cm, and the vertical overlap is at least 15 cm. If the roof is small and only one sheet will be used, then the C number is not taken into account. If there are 3 of them, then two overlaps of 15 cm are considered.
For our sizes use 3 pcs. irrational. Two profiles are enough, in which the length of the bottom sheet is a multiple of the wave pitch of the metal tile. In this case, 15 cm is added for the overlap and 5 cm. So, the total length of the slope with overlap and cornice will be: 6 + 0.15 + 0.05 = 6.2 m. The lower profile will have a size equal to the wave pitch. Often it is a multiple of 35 cm. You calculate your figure indicated by the manufacturer. Add an overlap to it. It turns out that the size of the lower profile can be as follows:
- 35×2+15= 85 cm;
- 35×3+15=120 cm;
- 35×4+15=155 cm.
The list goes on. But, if we bring it closer to our indicators, we get the possible length of the lower element: 190 cm, 225 cm, 330 cm. Now we need to calculate average length roofs. The total figure with overlap and cornice was 6.2 m. To find out the average, divide it in half. 6.2÷2=3.1 m. From the calculations we carried out above, the ideal size for the lower profile would be 330 cm (3.1 m). This number is a multiple of the wave pitch of the metal tile. So, we found out that the lower element will have a length of 3.3 m. And to find out the indicators of the second (upper) one, you need: 6.2–3.3 = 2.9 m. That’s all. As a result: for your roof slope of 6 m, you will need to lay 2 sheets of metal tiles, one of which is the bottom one, has a size of 3.3 m, and the second one, the top one, has a size of 2.9 m.
Total amount of metal tiles per roof slope
We shook our heads a little, now we can summarize what we have learned. For a roof measuring 10x6 m, you will need 9 rows of metal tiles, each containing 2 sheets (3.3 and 2.9 m). Their total number is 18 pieces. Nine of them are 3.3 m each and nine are 2.9 m each. But these are consumables only for one side. If the covering is gable, then twice as much will be required.
Note! You should not take the goods end-to-end. It's better to take 10% more as a reserve.
We count additional elements and fasteners
In addition to the sheets themselves, you will need to purchase the following components:
- Figured horse.
- End strip.
- Cornice strip.
- Snow holders.
- Lower and upper valley.
- Junction strip.
Additional elements are produced in a standard length of 2 m. We already know the width of the cornice, it is 10 m. Therefore, we will need exactly 5 planks for it. But, during installation, it is necessary to make an overlap, which for the cornice is 10 cm, and for the valley - 30 cm. Other additional parts are calculated using exactly the same scheme. It is important to know only the indicators (ridge, valley, end) and divide it by the length of the additional element.
In addition, you cannot do without fasteners. Sheets of metal tiles are fixed with special self-tapping screws with a washer head and seals. Due to the fact that the color of the caps is the same as the color of the material, they are not too visible. How can you find out their number? Eat average, which is 7 screws per 1 m 2 of roofing. All you need to find out is the area of the roof slope. The area formula is quite simple: S=a×b. Since we have gable roof, then the formula will look like this: S=(a×b) 2. For example, let’s take all the same indicators 10×6 m. S=(10×6) 2 =120 m 2. If 1 m2 requires 7 self-tapping screws, then 120 will require exactly 840 pieces. We simply multiplied the total area by the number of screws. Now all that remains is to go to the store and buy them. One package has 250 pcs. How many packages should I buy then? 840÷250=3.36. You'll have to buy 4 packs to have extra. If this is a lot and you can buy separately, then buy 3 packs exactly and 90 pcs. apart.
If we talk about the installation of additional parts, then to fix them for 1 m you will need 6 self-tapping screws. They are sold in 100 pieces. in a pack. All this is calculated individually according to the same scheme.
Let's sum it up
Before starting to install the coating, any developer will first sit down and count the number of parts consumed and find out the cost of the finished coating. This is a very important stage. Not in vain folk wisdom says: “Measure twice, cut once.” After all, without knowing exactly how many consumables you will need, you will not be able to complete the installation. But buying everything by eye is very stupid. It’s good if there aren’t enough metal tiles. You can go and buy the missing number at any time. When there is an excess of it, then it is money wasted. Therefore, use the tips from this article and find out the required amount of metal tiles. Then all the work will go smoothly and without any problems.
