Swimming pool covered with polycarbonate. Do-it-yourself pool - we equip a small lake in a suburban area

What plays an important role in repair and installation? Of course, fasteners. Due to the variety of jobs that require fixing and the materials used during repairs, a wide range of fastening products are used. In this article, we will take a closer look at the data on the consumption of self-tapping screws per drywall sheet.

Ceiling materials calculation table

Drywall is used to create ceilings and partitions. To install sheets, you need fasteners. Self-tapping screws are excellent for this business, which will require a considerable amount.

Of course, you can save money and use fewer fasteners, but this is a fastener that requires a long service life. Note that material consumption cannot be calculated with accuracy.

The frames, which are the support for the GKL, are represented by two types: metal and wooden. There are several types of fasteners: dowel-butterfly, dowel-nail, self-tapping screws for metal and wood. Repair work cannot be imagined without self-tapping screws. They are chosen depending on what material the frame of the partition or ceiling consists of. Remember that self-tapping screws for metal and wood are not interchangeable.

The ceiling is an important part of the apartment, and therefore carefully select the materials for it. The visual difference between self-tapping screws for metal and wood is the distance between two thread ridges. It's called a step. More details on the picture.

Types of self-tapping screws, taking into account the thread pitch

Consumption of self-tapping screws per square meter of drywall

Correctly calculate the number of self-tapping screws for fixing the ceiling frame and partition, because if there are not enough of them, the drywall will not hold well, and if there are too many, it will crack.

Professionals recommend placing self-tapping screws at a distance of 35 cm from each other. If necessary, strengthen the structure, you can carry out fastenings and closer. The profile mounting distance should not be less than 10 centimeters. Remember that at least 10 millimeters recede from the edge, since when installed at a shorter distance from the edge of the profile, it may be destroyed. The consumption of fasteners depends on how much you need to strengthen the ceiling or partitions.

It is worth noting that a distance of 35 centimeters refers to a single-layer GKL coating. If you make a stepped ceiling or attach sheets in two layers, the parameters will change. Self-tapping screws are installed on the first sheet at a distance of 60 cm, and on the second sheet at 35 cm already known to us. This is quite enough for good fortification designs. The number of self-tapping screws per 1 m² varies from 20 to 25 pieces, but it is best to take it with a margin so as not to visit the store several times.

Calculation of self-tapping screws and other materials in the online calculator

If you need accurate information, use the electronic calculation in the online service. Using the calculator program, calculate the consumption of fasteners and other materials that are used in the work.

But be that as it may, even electronic calculation does not guarantee that some parts will not be rejected or damaged, so purchase materials with a 15% margin.

Direct the fasteners into the gypsum board and the frame at a right angle. This guarantees strength and reduces the chance of cracks. If the fastener enters obliquely, then the hole becomes larger, which reduces the strength of the material.
If the self-tapping screw entered obliquely, then it should be pulled out and screwed in again.

It is important that it is forbidden to screw into the same hole twice. Step back at least 5 centimeters from the previous hole, this ensures that the plasterboard does not collapse.

An example of the location of self-tapping screws

Keep track of how far the self-tapping screw goes. Professionals say that at least a third of the length should be in the frame. This guarantees good anchorage.
Once the fixing is in place, check the surface for smoothness. Fasteners should not protrude, the hat is “recessed” to a depth of one millimeter. No more and no less, with a significant deviation from this parameter, there is a threat to the structure.
When a stepped ceiling or partitions with a double layer of GKL are installed, the sheets are overlapped. In this case, the edges of the two layers should not coincide, as this reduces the stability of the structure. A similar method is used in profiled sheet fences.
There should not be any foreign objects and materials between the GKL and the frame, since one of the disadvantages of this material is the ability to deform.

Video lesson on correct fastening from master:

If you follow the tips for using self-tapping screws, you will get the optimal consumption of materials. It increases only due to damage to parts of the structure.

An example of the correct deepening of the self-tapping head in the GKL

How to make the mount secure

There are cases when the self-tapping screw untwisted and increased the likelihood of breakage. To avoid such problems, self-tapping bugs were invented. They are so named because, like insects, they hold well on the surface. The risk of self-unwinding is reduced to zero due to notches on the head.

Use the provided data on the consumption of self-tapping screws for calculations, then you will fix the partitions and the plasterboard ceiling properly.

In contact with

The roof of any house must be reliable. Strongly protect the building from snow, wind and rain.

Require less energy and funds for its construction. Meet the aesthetic needs of the owner.

That's why many prefer profiled sheet(metal profiled sheet), as the best option for the construction of the roof.

Its advantages:

polymer protection keeps it from corrosion;
he is indifferent to climatic surprises;
non-toxic;
resistant to fire;
varied in color and types;
affordable.

Does it method of fastening corrugated board with self-tapping screws another advantage? — Yes, there is nothing complicated about it. The main thing is to know what and how to do it.

Technical characteristics of the profiled sheet.

The fastening of the profiled sheet on the roof is carried out with roofing screws. A large sheet area, metal rigidity and low weight create a load on the fasteners. The stability of the roof also depends on the reliability of fastening in case of strong gusts of wind. The type of frame is taken into account: it can be metal or wood.

Self-tapping screws that are attached to a metal surface are made with fine threads and a tip, like a drill. With high strength, they are easily screwed into the metal surface without requiring holes.
Self-tapping screws designed for wooden frames are very similar to simple screws, only with a larger head diameter. Their strong steel is also able to break through the roofing profiled sheet without drilling.

Mounting screws come with a different head: cylindrical, hexagonal, semicircular and spherical. The slots are also different. They can be in the form of an asterisk or a cross. Curly or straight.

Self-tapping device

For corrugated board most self-tapping screws with a special sealing gasket made of artificial rubber (EPDM) are suitable. The contact with the metal surface is so tight that there is no risk of water penetrating through the joint. This is facilitated by a special protrusion along the edge of the hexagon. It enhances the strength of the head and adds reliability to the seal.

Self-tapping screws for roofing from corrugated board are easy to pick up and by color, as they are available with a different decorative coating, which also has a protective property.

NOTE!

Choosing fasteners, choose quality, not the price. After all, they have to withstand significant loads. The steel must be strong and the tip must be properly sharpened. Not a solid cheap self-tapping screw for roofing from a profiled sheet can break and ruin the profile.

The presence of marking indicates the quality of fasteners. It is worth choosing self-tapping screws with elastic thick (2 mm) neoprene pad. The zinc coating should be within 12 µm. Then they last a long time and won't rust. You can check the quality yourself: squeeze the washer with EPDM with pliers and check the integrity of the paintwork. The gasket must not come off the metal washer.

How to correctly calculate the consumption of self-tapping screws per 1m2 of profiled sheet for roofing

Features of fastening corrugated board

Self-tapping screws are screwed into that part of the sheet that fits snugly against the frame boards. From below and from above in each wave. And from the sides - into the crate in steps of 50 cm. In order for the sheets to fit snugly in places of overlap, fastening is carried out in a checkerboard pattern, through a comb. For strength, the pieces of the profiled sheet are interconnected using self-tapping screws 20 mm long.

How to tighten a self-tapping screw

How many self-tapping screws per 1m2 of profiled sheet for roofing

The calculation is done before the start installation work. To fix a square meter of profiled sheet, 7 - 9 self-tapping screws are required. This number is multiplied by the number of metal sheets that are prepared to cover the entire roof surface. However, you need to buy with the expectation that the screws can break or be lost.

What crate is needed for a roofing profiled sheet

The crate on which the profiled sheet is mounted can be metal or wood. It all depends on the purpose of the building. For industrial or outbuildings, it is made of metal. The slope of the roof here is minimal, the load is significant, so the frame should be more stable.

In residential buildings with a steep roof slope, wooden blanks are used under the crate. Dimensions for timber - 40 mm to 40. 50 mm by 50 is allowed. The thickness and width of the board are 32 mm and 100 mm, respectively. These standards are used under profiled roofing sheets.

In connection with the expected load and the angle of the roof, the crate has a different pitch.

The distance between the edges of the boards at 30 - 50 cm shown if the angle of inclination is 15 degrees or more.

At less than 15 degrees, it depends on the type of profiled sheet.

Decking marked C20 requires a full frame. The overlap of adjacent sheets is 20 cm. This is approximately the length of one wave.
Profiled C35 lay on the frame in increments of 30 cm with the same overlap.
Profplast C44 mounted on the crate with a step of 50 cm.

An angle of 15 degrees provides step in 30 - 40 cm with little with an overlap of 10 - 15 cm.

Fastening the profiled sheet with the help requires that the fasteners be twice as long as the crate board. If the beam is 75 mm wide, then the screw should be 150 mm.

Types of crates for profiled sheets

With expected significant loads, the frame is mounted in two layers. The lower crate parallel to the ridge is made with a discharged step of 50 - 70 cm.

How to properly fix the roofing profiled sheet to the crate

With the right choice of the type of material and fasteners on the roof, the process is not complicated. It is important to follow the rules for fastening and laying roofing.

Fastening the profiled sheet with self-tapping screws on the roof is carried out in the following order:

Before starting work, a wooden base treated with an antiseptic. In the future, this will save the wooden frame from destruction and extend the life of the roof.
The reliability and strength of the roofing surface will depend from the tightness of the metal sheets to the frame. Protecting the building from the influence of moisture, wind, temperature changes is one of the main functions of the roof.
So, how to fix the profiled sheet on the roof? The metal is attached to the crate in lower part corrugations. The overlap of leaves on each other in one row is one or two waves. Between themselves, the rows are connected with an overlap of 1 - 2 cm.
The fastening of the upper and lower parts of the profiled sheet to the crate is carried out in each wave. Fasteners of the side parts - through time.
The joining of profiled sheets to each other is carried out with rivets using hand guns. To prevent the washer of the self-tapping screw from warping, it should be screwed strictly vertically to the surface of the sheet. This will ensure a tight fit and seal. The longer the screw, the more likely the risk of misalignment.
The connection of the elements of the ridge and corrugated board through its protruding part will create a high fit. If the slope of the roof is not so gentle, put additional gaskets to seal, directly under the ridge at the bottom of the wave bend. In a heavy downpour with wind, water will not pour under the ridge. Read also about.
To save installation time and avoid uneven laying of sheets, they are installed in blocks of three to four pieces.
The profiled sheet is important to cut correctly. It is better to do this with electric scissors. Hand held ones will work too. If you need to make cuts along the oblique, use a jigsaw.
To ensure that the cuts do not corrode, they are treated with an anti-corrosion agent.
The master must be careful, being on the roof, not to accidentally damage the surface of the flooring. After 2 months, it is necessary to tighten the thread of the self-tapping screws. When installing the roof, the profiled sheets could move and weaken the fastening density.

Profiled sheet fastening scheme

How to properly screw in a screw

Profiled sheet consumption per 1 m2 of roof: coefficient and calculation calculator

Calculation example for a roof of complex shape

The slopes of complex roofs, such as hip and mansard, are made in the form of trapezoids and triangles. The calculation of the amount of material required begins with a detailed layout of the coating sheets in the drawing. Having specified all the overlaps and overhangs, determine the entire area. An accurate calculation will make it possible to minimize waste.

The length of the sheet is taken as the basis. Depending on the type of professional plastic, it varies from 500 mm to 6500 mm.

The number of fasteners is calculated as follows: If 9 self-tapping screws are needed per square meter, then it is enough to multiply 9 by the coverage area.

More complex calculations are best left to specialists.

Useful video

We suggest you watch the video instructions for attaching the profiled sheet to the obreshetka:

In contact with

Often, during construction, it is necessary to pre-calculate required amount fasteners (hardware). How to do it? After all building construction have different shapes and sizes. In particular, there is a need to determine the number of self-tapping screws for fastening profiled sheets. Possible ways calculations are given in the article.

Advantages of self-tapping screws compared to other fasteners

You can fasten corrugated board with various fasteners - from self-tapping screws to bolts.

Obvious advantages in use - the profiled sheet can be fixed to a structure made of any material without the need to drill holes for mounting. The self-tapping screw has a drill at the end and drills a hole and at the same time cuts a thread during rotation.

Various versions of self-tapping screws allow their use in almost any combination of materials and loads. Special coatings provide corrosion resistance of fasteners and extend the service life up to 45 years. The only condition is that it is necessary to use self-tapping screws designed for specific materials.

The technological advantage of self-tapping screws is most pronounced in the speed of installation. All work can be done with a minimum set of tools. For example, using only a screwdriver.

2. Factors affecting the consumption of self-tapping screws

The correct answer to this question is impossible without taking into account 2 main factors:

functional application of the profiled sheet
operating conditions.

Functionally, the profiled sheet is only an element of the building envelope. However, its use in this capacity is quite diverse.

Decking can be used as:

roofing,
wall material of a prefabricated building (garage, shed, hangar),
finishing material for the walls of buildings and structures,
filling the span of the fence, etc., etc.

In each of these cases, it is necessary to know the number of screws, and it can vary by orders of magnitude.

The natural conditions in which the corrugated board is used strongly affect the consumption of self-tapping screws.

wind and snow loads,
corrosion

- the reasons for the increase in the consumption of self-tapping screws for installation.

Important! The sheet profile has a significant impact on the fastening technology, and hence on the amount of fasteners. The more complex the profile, the more fastening points are needed for its reliable installation.

Rules for mounting profiled sheets

Exist general rules laying sheets on various structures, which will determine the minimum number of fastener installation points required for installation:

When installing a profiled sheet on the roof self-tapping screws are installed in the lower part of the profile, with the exception of the roof ridge, on which fastening is carried out through upper part profile.
When installing fences and wall cladding self-tapping screws are installed, as a rule, only in the "trough" of the wave, which is tightly adjacent to the plane of the underlying structure.
In all cases, it is mandatory to fasten the overlap zones of the sheets with self-tapping screws.
For all options for the location of the corrugated sheet, the axis of the self-tapping screw must be strictly perpendicular to the surface of the profile and the fastening surface in order to prevent moisture from penetrating under the screw head. This circumstance leads to the rapid destruction of the body of the fastener and significantly reduces the service life of the coating.

Features of installation of corrugated board on building structures

The number of self-tapping screws during the installation of corrugated board depends on the place of its installation and, as a result, on the way the sheets are laid out.

And if the method of laying out the sheets during the construction of the fence will not cause difficulties, then during the construction of the roof everything looks much more complicated, taking into account the various slopes and shapes of the roof slopes.

Below we will consider the most common options for using corrugated board:

roof covering;
span of the fence;
facing of wall protections;
light building walls.

Features of roof mounting. Calculation of the number of attachment points

The number of installation points for self-tapping screws for mounting roofing is determined by the pitch of the crate and the size of the sheet.

The batten pitch sets the number of vertical fastening rows and depends on the angles of the roof slopes. With a slope angle of more than 15 degrees, the step is set from 30 to 50 cm.

The fastening of the corrugated board to the crate is carried out in any order after 1 wave, with the exception of the points of attachment to the lower and upper tiers of the crate - sheets are attached to the first and last timber in each wave, since the wind load is concentrated in these areas.

Important! The most rational from the point of view of reliability and distribution of loads is the staggered arrangement of the points of attachment of the sheet to the crate.

The density of attachment points of the main body of the sheet is at least 4 per square meter. The dots should be spaced as evenly as possible across both the width of the sheet and along its length.

At the same time, it should be taken into account that the sheets on the gables and zones of longitudinal overlaps are attached to each beam of the crate. In the case of using a continuous crate, fastening is carried out at intervals of at least 50 cm along the length of the sheet.

Based on the above considerations, in the general case, the approximate number of self-tapping screws for fastening one sheet of corrugated board to the roof can be determined by the formula:

N = n × 2 + m × 2 + S × 4

m - the number of battens along the length of the sheet,

S is the area of the profiled sheet in square meters.

Calculation of the number of installation points for self-tapping screws during the construction of the fence

When building a fence, the attachment points of the sheet are located on horizontal logs. Their number is determined by the number of lags and the value of the wind pressure in the area.

At low wind speeds, it is advisable to install self-tapping screws at 3 points along the sheet width - at 2 points along the edges (in the overlap zone) and in the center. That is, to fasten 1 sheet with 3 lags, you will need 9 self-tapping screws.

With predicted significant wind loads, it is necessary to strengthen the reliability of fastening. It is recommended to screw self-tapping screws into each wave along the length of the lag. The total number of attachment points is calculated by the formula:

m is the number of lags.

Consumption of fasteners per one sheet of corrugated board on facades and wall railings.

When using corrugated board for facade cladding, the sheets are mounted on a special frame. Frame material may vary. The most commonly used wooden blocks.

Self-tapping screws are installed through the wave. The condition of mandatory fastening in places of overlaps must also be observed. The number of rows of attachment points depends on the structure of the frame.

The calculation of the maximum number of fasteners for mounting 1 sheet is carried out according to the formula similar to the calculation of the fastening points on the fence:

where n is the number of waves on the sheet,

m is the number of rows of attachment points.

How many are needed? When buying, it is easier to weigh than count.

The values obtained by the formulas for the number of fasteners do not take into account the installation of various roofing elements, such as structures:

junctions,
snow retention,
pipe aprons,
planks of cornices and gables.

For a rough estimate total fasteners are used

data obtained in practice - 8-9 pieces of self-tapping screws are consumed per 1 m2 of profiled sheet.

The useful area of the profiled sheet is calculated. To do this, the overlap area is subtracted from the total area. The size of the overlap is assumed to be 15-20 cm.
The resulting area is multiplied by 9. It turns out the approximate number of fasteners per 1 m2.

Most often, metal tiles are used as the finishing material in the construction of the roof. But during installation, not only the features of its installation are taken into account, but also the location, the number of self-tapping screws for metal tiles.

This roofing material is very popular in Russia today. This is primarily due to the fact that the metal tile has such qualities as strength, low price and ease of installation.

The fastening of the metal tile to the crate occurs with the help of special self-tapping screws. They have a special structure. At the end, they look like a drill that can easily pierce metal. And a special washer, located near the cap, contributes to a snug fit of the fastener.

The order of the location of the screws you need to know to use the required amount of material and not only. And in order not to spend extra money on fasteners, you should know exactly in what order and quantity they are twisted into a profiled steel sheet. In addition, it is worth noting that extra holes should not be made in the metal sheet. So how many self-tapping screws should be used per sheet of metal? To answer this question, you first need to choose high-quality fasteners.

In this article

Material

High-quality self-tapping screws for metal tiles should not only quickly pierce the sheet, but also be securely fixed in the tree.

As you know, this fastener is made of metal, which is subject to the negative effects of corrosion. To avoid the development of these processes, the material is covered with an additional protective coating. Most often, zinc is used for this. This element promotes reliable metal adhesion.

Modern manufacturers produce fasteners with a huge range of colors, so you should not worry that they will stand out on the surface of the roofing material. Some manufacturers immediately supply hardware of the appropriate shade complete with the finishing coating. Often such goods are considered high-quality.

For a tight connection in the screws, a small polymer gasket is provided. It is located under the cap of the hardware. The duration of the operation of the roof depends on this gasket, so it is better to give preference to a quality product. It is known that gaskets of poor quality are destroyed over time under the negative influence of the environment. Moisture penetrates into the gaps formed, which starts the process of metal corrosion and wood decay.

If a set of fasteners was not attached to the purchased metal tile, they must be purchased separately. In this case, you should pay attention to the presence of markings on the hat. If it is absent, then this indicates a low quality of the material.

These fasteners are made from high carbon steel. Manufacturers give a guarantee for 50 years of their service. You can check them for the quality of the protective layer. To do this, it is necessary to deform the hat with pliers. The galvanized layer should not peel off.

There are various sizes of hardware.

4.8 x 35 mm or 4.8 x 20 mm are used for fastening to a wooden crate. Roofing self-tapping screws 4.8 x 20 mm are used for fastening a sheet of metal to each other in places of a complex geometric shape of the roof. Together, where it is necessary to achieve particularly reliable fastening, self-tapping screws 5 and 7 cm long are used.

Calculation of self-tapping screws

When designing a future roof, you should pay attention to every little thing, including the consumption of self-tapping screws. If fasteners are used frequently, then there is a high probability of leakage in the future. If you use a minimum of hardware, then the metal tile will vibrate with gusts of wind, and this will lead to the rapid destruction of the roof.

To correctly calculate the required number of screws, you should know 2 parameters:

The density of fasteners per 1m 2;
Roof area.

Sheets of metal are attached to the crate. In this case, the hardware passes at the bottom of the wave, which rests on the wood. Experienced builders know that fasteners should never be passed along the top of the wave. The fastening of the metal tile in the area of the ridge and the extreme part of the roof should take place in each wave.

At intermediate stages, hardware must be placed through the wave. In places of overlap, the interval between fastenings should be 1 meter along the crate. With an average lathing step of 50 cm per 1m 2, 7 self-tapping screws must be used.

Remember that this calculation is approximate, and is only acceptable for a simple roof. Structures with a complex configuration require the use of a larger number of fasteners.

Outcome

Remember, properly fixed finishing material can last a long time. The required number of fasteners should be used. They will provide reliable fixation of the metal tile.

Drywall is a popular finishing material, characterized by versatility and environmental friendliness. In addition, it is absolutely non-toxic and does not conduct electricity. Its installation is not complicated and does not require serious financial costs, while the result is stunning.

As you know, any repair and subsequent finishing work leads to significant financial costs, so it is especially disappointing if the purchased materials remain unused and turn out to be superfluous. Therefore, when buying them, everyone tries to calculate the right amount as accurately as possible so as not to overpay. But if this can be done easily with large elements, then determining the number, for example, of self-tapping screws for fastening drywall sheets, will not work so quickly. There are many nuances here.

What self-tapping screws are used when installing GKL?

Self-tapping screws are reliable and inexpensive fasteners made from brass or stainless steel. These hardware differ in threading, coating, purpose and shape of the tip. Everyone who decides to make repairs in the house with the help of gypsum boards is wondering how many self-tapping screws are needed per 1m2 of drywall. There is no unequivocal answer to this question, since their number is calculated depending on the step of fastening the GKL to a wooden or metal profile.