Self-tapping screws consumption for roofing material - profiled sheet. What are the self-tapping screws for fixing the profiled sheet: dimensions and consumption.

Fastening profiled flooring and calculation of self-tapping screws

All of us during the roofing with profiled flooring (corrugated board) faced the questions: how many self-tapping screws are needed and how to fix it correctly, what is the consumption of self-tapping screws per 1 m 2 of profiled sheet and how to choose them correctly.

The scheme of fastening the profiled sheet to the roof with self-tapping screws. The number of screws that are needed per one square meter covering, is from five to six pieces for the installation of the fence and from six to eight for the roof.

When fastening a profiled sheet, you need to take into account its thickness, dimensions, for a better connection and to avoid unnecessary consequences. In this article, we will analyze how to correctly calculate the number of self-tapping screws and for which profiled sheets it is correct to use them.

When equipping roofs with profiled decking, it is required correct selection length, so that it is larger than the roof slope. We fasten the corrugated board to the wooden crate with self-tapping screws. You can also use a metal crate, because self-tapping screws drill through the metal when screwing in. For the roof, hardware is used, produced by Hilli, EKT, SFS, Fischer, the diameter of which should be 4, 8, 5.5, 6.3 mm, with a length of 19-250 mm. You can also buy products from domestic manufacturers with a diameter of at least 6.3 mm.

The selection of self-tapping screws and their number for the roof is made so that the length of the threaded part of the screw is greater than the length of the package to be connected, not less than 3 mm.

When buying self-tapping screws, you need to take into account their quantity with a margin, as well as their quality. The installation of high quality self-tapping screws can be done without previously drilled holes. With the correct method of fastening them and calculating the amount of corrugated board, they are used both for roofing of roofs and for walls inside and outside the building.

There are three main commonly used types of corrugated board:

Roofing has a great height and is used for roofing the roof. Wall - with less volume. Carrier - used for load-bearing structures due to its great thickness. Moreover, the forms are completely different and require a special approach to fastening.

Rules for fastening corrugated board

An example of the correct screwing in of self-tapping screws. When manually tightening, it is necessary to control the effort so that overtightening does not work (this is fraught with damage to the insulating layer).

For fastening, a properly prepared surface must be present. The corrugated board is attached at the point where the trapezium wave of the corrugated board adheres to the crate. With this method, there is no lever between the point of imposition of forces on the screw and the attachment point. To reduce the wind loads of each trapezoid wave, the corrugated board is attached to the lower and upper purlins, and from the side of the wind bar they are attached to each purlins. Profiled decking with a width of 1100 mm and a length of 8000 mm with a lathing step of 500 mm requires a distance between screws of no more than 500 mm. Conclusion: at the top there are 2 screws, at the bottom 2, plus the wind side - 16 pieces. In total, we need 20 self-tapping screws per sheet of material. Before installation, a hole is drilled in the profiled sheet 0.3-0.5 mm larger than the diameter of the screw. Screws are screwed at an angle of 90 degrees. This is necessary to eliminate the possible appearance of through holes in the roof.

1. Drills - only with low rpm chuck.
2. The screwdriver is a simple and reliable manual method.

Using any other or these tools requires a lot of skill and safety.

Laying of corrugated board with a thickness of 0.5 to 1 mm and a length of 2 to 12 meters begins from the right or left end. At the edges, the profiled sheet should protrude 40 cm. We install the first profiled sheet and fix it with one screw on the ridge. Then we attach the second one to the ridge with one screw. All the time we make sure that the edges of the sheets lie on one line and the profiled sheet is not skewed. At the top of the wave, we fasten the overlap of the sheets with one screw. Thus, we attach the other three sheets. After aligning their bottom edge, we firmly fasten them along the entire length. A horizontal overlap of sheets is allowed from 10 cm. Thus, from 4 to 8 screws are consumed per 1 m2.

Features of installation of wall sheeting

Mounting it to the wall starts from the right corner. Before installing on the wall, check the surface for unevenness. Then we fix a wooden crate or crossbar. To ensure good sheet adhesion and good fastening, the distance of the crossbar is controlled. It should be about 0.5 mm. The subsequent profiled sheet is attached to the previous one with an overlap. Thus, the capillary groove of the first profiled sheet is covered. When working, careful control is required to avoid distortions. At the bottom, you need to leave a gap of 2 to 4 cm for ventilation of the space under the corrugated board. If desired, the space between the profiled sheet and the crate is filled with thermal insulation or sound insulation. We start fixing the corrugated board from the bottom corner and go to the top. During fastening, a minimum distance must be left between the screws and the supporting structure. With the dimensions of the profiled sheet 1250 mm wide and 10 000 mm long, 45 self-tapping screws are required. On average, a profiled sheet of 1 m 2 requires 5 to 8 pieces.

Here is another way to calculate the number of self-tapping screws for attaching a profiled sheet

Take the layout of the corrugated board. For example, a profiled sheet 1000 mm wide, 12 200 mm long. In each case, you need to know exactly the data in order to avoid inaccuracies. The profiled sheet is attached to the extreme supports with each wave and through one wave - to the intermediate ones. The sheets are fastened together with self-tapping screws with a distance of 1 m from the support, the pitch of which is 250, 500 and 1000 mm. Let's multiply the number of sheets, add the extreme hardware plus the percentage of scrap. We count the bottom screws. The total is 6-9 pieces per 1 m 2.

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Fastening profiled flooring and calculation of self-tapping screws

All of us during the roofing with profiled flooring (corrugated board) faced the questions: how many self-tapping screws are needed and how to fix it correctly, what is the consumption of self-tapping screws per 1 m 2 of profiled sheet and how to choose them correctly.

The scheme of fastening the profiled sheet to the roof with self-tapping screws. The number of self-tapping screws that are needed per square meter of coverage is from five to six pieces when installing the fence and from six to eight for the roof.

When fastening a profiled sheet, you need to take into account its thickness, dimensions, for a better connection and to avoid unnecessary consequences. In this article, we will analyze how to correctly calculate the number of self-tapping screws and for which profiled sheets it is correct to use them.

When equipping roofs with profiled decking, the correct selection of length is required, so that it is larger than the roof slope. We fasten the corrugated board to the wooden crate with self-tapping screws. You can also use a metal crate, because self-tapping screws drill through the metal when screwing in. For the roof, hardware is used, produced by Hilli, EKT, SFS, Fischer, the diameter of which should be 4, 8, 5.5, 6.3 mm, with a length of 19-250 mm. You can also buy products from domestic manufacturers with a diameter of at least 6.3 mm.

The selection of self-tapping screws and their number for the roof is made so that the length of the threaded part of the screw is greater than the length of the package to be connected, not less than 3 mm.

When buying self-tapping screws, you need to take into account their quantity with a margin, as well as their quality. The installation of high quality self-tapping screws can be done without previously drilled holes. With the correct method of fastening them and calculating the amount of corrugated board, they are used both for roofing of roofs and for walls inside and outside the building.

There are three main commonly used types of corrugated board:

• roofing;
• wall;
• carrier.

Roofing has a great height and is used for roofing the roof. Wall - with less volume. Load-bearing - used for load-bearing structures due to its large thickness. Moreover, the forms are completely different and require a special approach to fastening.

Rules for fastening corrugated board

An example of the correct screwing in of self-tapping screws. When manually tightening, it is necessary to control the effort so that overtightening does not work (this is fraught with damage to the insulating layer).

For fastening, a properly prepared surface must be present. The corrugated board is attached at the point where the trapezium wave of the corrugated board adheres to the crate. With this method, there is no lever between the point of imposition of forces on the screw and the attachment point. To reduce the wind loads of each trapezoid wave, the corrugated board is attached to the lower and upper purlins, and from the side of the wind bar they are attached to each purlins. Profiled decking with a width of 1100 mm and a length of 8000 mm with a lathing step of 500 mm requires a distance between screws of no more than 500 mm. Conclusion: at the top there are 2 screws, at the bottom 2, plus the wind side - 16 pieces. In total, we need 20 self-tapping screws per sheet of material. Before installation, a hole is drilled in the profiled sheet 0.3-0.5 mm larger than the diameter of the screw. Screws are screwed at an angle of 90 degrees. This is necessary to eliminate the possible appearance of through holes in the roof.

1. Drills - only with low rpm chuck.
2. The screwdriver is a simple and reliable manual method.

Using any other or these tools requires a lot of skill and safety.

Laying of corrugated board with a thickness of 0.5 to 1 mm and a length of 2 to 12 meters begins from the right or left end. At the edges, the profiled sheet should protrude 40 cm. We install the first profiled sheet and fix it with one screw on the ridge. Then we attach the second one to the ridge with one screw. All the time we make sure that the edges of the sheets lie on one line and the profiled sheet is not skewed. At the top of the wave, we fasten the overlap of the sheets with one screw. Thus, we attach the other three sheets. After aligning their bottom edge, we firmly fasten them along the entire length. A horizontal overlap of sheets is allowed from 10 cm. Thus, from 4 to 8 screws are consumed per 1 m2.

When calculating the number of necessary parts, it is imperative to take into account the impact of the external environment and atmospheric phenomena. The more dangerous they are, the more screws will be required for mounting the roof. And you also need to take into account the thickness and dimensions of the parts in order to hedge the appearance of defects in the work. The hardest thing is to calculate how many parts will be needed for 1m 2. Below are several calculation methods that will help answer this question.

Basically, 1m 2 of profiled sheet requires from eight to nine self-tapping screws. Guided by these data, you can easily calculate how many parts are needed to install the entire roof.

We take the length of one sheet of material and subtract the transverse overlap, which is 15 to 20 cm. The resulting value must be multiplied by the useful width of the sheet. Thus, we get the working area of \u200b\u200bone sheet of material. Then we multiply the resulting figure by 9 and the result is the approximate number of screws we need for the roof for 1m 2.

From the above calculations, we calculate the total number of parts required to install the entire roof. These calculations have already taken into account those screws that will be required for the installation of cornices, chimneys, ventilation systems and other important elements.

2 way

It is necessary to take the installation plan of the profiled sheet. For example, the material: width - 100 cm, length - 1 220 cm. It is required to approach very responsibly in determining the size of the material in order to prevent errors. Each extreme wave is mounted, and the intermediate ones - through the wave. Profiled sheets are fastened between themselves with self-tapping screws every 25, 50 and 100 cm. It is required to multiply all the profiled sheets, taking into account the edges and possible damage to the material. We consider the screws that will be located below. The result is about 6-9 pieces. for 1m 2.

3 way

It is necessary to add the reliability factor (one or two parts), as well as the margin (one or two parts) to the very minimum value of the screws. Defective products, loss of work and more are in stock. As a result, we find that about 6-8 self-tapping screws are required for 1m 2 of material.

When buying self-tapping screws, you do not need to count every little thing, because each part has its own weight. There is a size ruler, which indicates the weight of the screw. For example, 1000 pcs. parts with a diameter of 4.8 mm and a length of 25 mm weighs three and a half kilograms, when 1000 parts with a diameter of 6.3 mm and a length of 152 mm: 45 kilograms. Because of this, manufacturers pack small self-tapping screws for the roof in packages of one hundred, two hundred, two hundred fifty, five hundred, one thousand, two thousand and six thousand pieces, and the largest number of parts of huge self-tapping screws is one thousand pieces.

It is necessary to choose self-tapping screws and the required number of them in such a way that the length of the thread of the screw part is at least three millimeters longer than the length of the connecting package.

In the event that self-tapping screws are purchased of high quality, then their installation can be carried out without first making holes.

There is another option for determining the quantity required material: you can build on the recommendations of the manufacturer. For each building material, fastener standards are prescribed. It is they who determine how many self-tapping screws are required for 1m 2 of professional sheet for the roof. If you violate the recommended number of parts, then make a claim in the formation different kinds defects and damage will be impossible.

Because of this, it is worth carefully studying the packaging. building materials and follow the manufacturer's suggested values. Many suppliers have an established manufacturing process in such a way that they themselves are engaged in the production of fasteners. Because of this, a reasonable option would be to purchase a whole set: profiled sheet, fasteners and additional elements.

There are established standards for the consumption of fasteners for different kinds materials. But this does not mean that you need to strictly follow them, since the norm is the minimum. therefore the best option - buy more, as they say "in reserve", you never know where it breaks, is lost or found a marriage.

Based on the above methods for determining the number of screws for work, we can conclude: the average consumption of screws per 1m 2 is 6-9 pieces.

This value can vary depending on various factors. For example, if the roof is installed with a gentle slope. With an increase in the angle of inclination, the likelihood of a threat of wind increases, therefore it is required to increase the number of fasteners.

Watch this video, from which you will find out how many screws are required for 1m2.

Decking is a strong and durable material based on steel sheet. Such a product is used for finishing roofing systems, for creating fences and fences, installing small outbuildings, for decorating walls and solving many other economic and construction problems. Of course, the material won the greatest popularity precisely as a roof covering. This is due to its high performance, because subject to the installation technology, profiled sheets will reliably protect the structure from negative weather factors for a rather long period and withstand high loads in winter. In addition, the coating is easy to install even without much experience in roofing works and not having a professional set of tools. You can also note a wide design variety, which concerns not only the choice of material colors, but also the available sheet profile. And the last factor that probably increases the popularity of corrugated board among consumers is its low cost.

Performing the installation of the roof with your own hands, it is these qualities that become decisive when choosing profiled sheets as a covering. At the same time, often, when purchasing material, the main attention is paid only to the quality of the flooring. However, this approach can lead to the fact that in the very near future the products will begin to rust and fall off. Low-grade components are to blame for this behavior of the material, this especially applies to fixing elements, that is, rivets or screws. It is important not only to buy fasteners with excellent characteristics, but also to know how to calculate the required number of elements. To find out the consumption of self-tapping screws for corrugated board, you should get an idea of \u200b\u200bwhat the required number of products can change from.

Features of fastening corrugated board

Not in all conditions, the number of self-tapping screws for fixing the profiled sheets to the roof sheathing will be the same. The most important factors in determining this parameter are:

• wind force, which can be determined from the table of wind loads in a particular region;
• the amount of snow cover, it is also easy to find the value for a specific area in special tables.

The larger each of the parameters, the greater the consumption of self-tapping screws per 1m2 of the profiled sheet. This rule should not be neglected, since in the case of an incorrect calculation, the roof will not be able to withstand the loads placed on it and, at best, it will deform, and at worst, the flooring will be torn off. roofing cake and all installation work have to start over. To understand how many screws are required for fastening, it is worth considering the installation diagram. Since the corrugated board is made on the basis of rolled steel, its length can vary from 40 cm to 14.5 m. That is, consumers can use sheets equal in length to the height of the slope. In this case, you only need to lay one row of material.

However, with self-assembly, it is easier to work with shorter sheets, and therefore the installation will be done in 2-3 rows. The procedure begins with the eaves in the left corner. That is, the first sheet in the bottom row is laid, and the second is mounted on top of it. At the same time, it is important to overlap, at least in one wave. The specific value depends on the angle of inclination of the roof:

• from 5-10 degrees the size of the overlap is 2 waves;
• at an inclination of more than 10 degrees - 1 wave overlap.

Further, the laid corrugated board is aligned along the line of the cornice and fixed in the lowest lathing strip in each wave, and the sheets are connected to each other with special rivets. The next sheet of the second row is also installed on the left side. The corrugated board is laid with both longitudinal and transverse overlap. The specific amount of overlap will also depend on the angle of inclination of the slopes:

• slope 5-10 degrees - overlap 30 cm;
• tilt 10-15 degrees - 20 cm overlap;
• tilt 15-30 degrees - 17 cm overlap;
• an inclination of more than 30 degrees - an overlap of 10-15 cm.

In places where the sheets overlap, it is required to install fixing elements in each wave. On the main part of the sheet, the screws are screwed in after 1-2 waves in a checkerboard pattern, while the distance between them should not exceed 50 cm.On this basis, we can conclude that the number of screws per 1m2 of the profiled sheet will be 4-8 pieces. Of course, in each case, this parameter is individual and before purchasing all the components and materials, it is recommended to make a plan for the location of the sheets on the roof and calculate the number of fasteners.

Calculation of self-tapping screws for fixing corrugated board

It is not so difficult to make your own calculation of self-tapping screws for corrugated board. It is enough to count required amount whole sheets for the entire roof or for individual slopes. To do this, it is enough to calculate the area of \u200b\u200bthe roof, that is, measure its length, width and multiply the values, and then divide by the area of \u200b\u200bthe profiled sheet, which is also calculated by multiplying the sides, read also:. The next thing to do is to calculate the number of screws or rivets per sheet. It is worth starting from parameters such as the number of screws for attaching the top, bottom edge and central part. As an example, you can take a sheet with a length of 8 m and a standard width of 110 cm. That is, in this case, 1 row of corrugated board is laid. For the upper and lower edges, you will need 5 self-tapping screws, which will be screwed into each wave, as well as 8 self-tapping screws for the central part, with a step of attachment to the crate of 50 cm.This means that you will need approximately 18 self-tapping screws per sheet of corrugated board with these dimensions. To understand how many fasteners are needed, it is enough to multiply the resulting number by the number of sheets required.

You can also take the average value, at which the manufacturer's recommended number of screws per 1m2 of the roof is taken into account - 4-8 pcs. That is, knowing the total area, it is enough to multiply the values. Of course, the calculation may differ in each case. For example, at more than 30 degrees, it is recommended to reduce the fastening step, that is, the consumption of screws will also increase. Also, an increased number of fasteners will be needed in case of high wind and snow loads. In addition, more screws are required for the end part of the roof and, if there are many end faces, then the consumption of fixing elements will be increased. It is important to keep in mind that no matter what figure is obtained as a result of the calculations, a 5-10% stock of fasteners should be added to the total. Such a stock may be required both in case of detecting low-quality self-tapping screws, and, if necessary, add fasteners in certain places for the most reliable fixation. Do not forget about fastening additional elements, for this you need 3-5 self-tapping screws for running meter.

It should be borne in mind that when buying hardware it is not at all necessary to calculate the screws individually. After all, the exact weight of products with various parameters is known. For example, a roofing screw with a diameter of 48 mm and a length of 2.5 cm will weigh 3.5 kg / 1000 pieces, and products with parameters 6.3x152 mm per 1000 pieces will weigh 45 kg. Therefore, it is quite easy for manufacturers to pack self-tapping screws, knowing their weight, in packages from 100 to 6000 pieces, read also:.

Decking is a thin-sheet polymer-coated metal material that is popular in modern construction. It is used outdoors in the structures of roofs, walls and fences, it is exposed to the effects of wind and precipitation. As a result, it needs reliable fasteners, with the role of which self-tapping screws do an excellent job.

Types of self-tapping screws for corrugated board

Hardware for fastening profiled sheets is diverse and divided into categories depending on the conditions of use, purpose and design features.

1. Self-tapping screws are available for metal and wood. The former are made of high-strength galvanized steel C 1022, have a tip in the form of a drill and a fine thread pitch, and are able to drill a hole in a metal plate 2.5 mm thick. The latter are distinguished by a large thread pitch, they drill metal with a thickness of 1.2 mm.
2. The heads of these screws differ spherical, semicircular, cylindrical and 6-sided, and with different slots. The hexagonal version for a screwdriver with a nozzle is the most acceptable. In addition, the heads roofing screws painted to match the color of the profiled sheets and marked by well-known companies.
3. For facing work, hardware with press washers are used. For more demanding tasks, screws with EPDM gaskets are used.

When choosing self-tapping screws, you need to know that they are made with a diameter of 4.8 to 6.3 mm and a length of 1.9 to 25.0 cm. In addition, the length of the working part of the hardware should exceed the thickness of the materials being fastened by 3 mm.

Hardware consumption

For roofing

The exact number of self-tapping screws for fixing 1 m² of corrugated board is not prescribed in the 1st installation instructions - it must be determined in each specific case, depending on many factors. The required number depends on the place of application of the material - roof, fence, facade, wall; weather conditions in the construction area - prevailing wind strength and thickness of snow cover; operational and geometric characteristics of the profiled sheet; the angle of inclination of the slopes, the pitch of the crate and other parameters.

• the bottom sheets near the cornice to the lathing are fixed in each wave;
• adjacent upper and lower profiles in places of overlap of up to 0.2 m are attached in the same way. Connections between horizontally located products are made with an overlap in 1-well corrugation by means of rivets;
• along the contour of the wind bar, the sheets are fixed to each crossbar of the sheathing;
• in simple areas, screws are screwed in in steps of up to 0.5 m through 1 or 2 waves in a checkerboard pattern;
• as the steepness of the slopes increases, the distances between fasteners decrease.

Example. The profiled sheet with a working width of 1.0 m and a length of 10.0 m is laid on the crate with a cross-member pitch of 0.5 m and is placed in the corner of the roof at the same time at the cornice and the pediment. It is necessary to calculate the number of self-tapping screws for fastening the entire profile, as well as in terms of 1 m².

Above and below, 5 are required, at the pediment - 8, in the middle - 16 hardware.

Total: 5 + 5 + 8 + 16 \u003d 34 pcs.

The maximum quantity per 1 m²: 5 + 3 + 3 \u003d 11 pieces, the minimum - 3 + 3 + 3 \u003d 9 pieces.

Output: 34 hardware is required to fix the profiled sheet, 9 to 11 self-tapping screws are required for 1 m² of roofing.

Since the roof mainly consists of simple sections, it is generally accepted that 8, 9 fasteners are required to fix 1 m² of profiled sheet. Knowing the total roof area, it is easy to calculate the number of self-tapping screws required to cover the roof with corrugated board.

For the construction of fence and wall cladding

When building a fence with a height of up to 2.0 m, 6 or 9 metal hardware (rarely - for wood) are usually used per running meter, depending on the number of lags - respectively 2 or 3. Fastening must be carried out in the overlap areas, in addition, in areas with high wind loads, fixation from below can be performed in each wave. If additional reinforcement is required, rivets are used. Hence: for fixing 1 m² of profiled sheet for the fence, from 3 + 3 \u003d 6 to 3 + 5 \u003d 8 self-tapping screws are used. The total number of hardware is calculated based on the length of the fence.

When using corrugated board as a facing material, the consumption of screws is determined taking into account the following information:

• a sheet of 2.0 m is attached in 3 rows;
• self-tapping screws are fixed through the corrugation in a checkerboard pattern;
• in regions with strong wind, fastenings can be made in each arch.

In this case, the number of fasteners per 1m² is at least 6 pcs.

When constructing a garage or other outbuildings from a profiled sheet, self-tapping screws are fixed in each wave with a vertical step of 1.0 m. Consumption per square meter is approximately 10 pcs.

Regardless of the place of application, it is beneficial to fasten the corrugated board with high-quality self-tapping screws, and since they are not cheap, the calculation of the number of hardware must be taken seriously and responsibly.