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Selling metal tiles can bring a good income. But you will be able to earn much more if you organize your own production of metal tiles. To do this, you will have to purchase the appropriate equipment, which costs a lot of money. However, these costs can quickly pay off if the business is organized correctly. A big plus of this type of activity is all-season. The production and sale of metal tiles will always bring high profits.

What equipment to choose for the production of metal tiles
Metal tile production technology
Business prospects for the production of metal tiles
A step-by-step plan for opening a metal tile production
How much can you earn from activities
How much money do you need to start a business
Which OKVED to use for the production of metal tiles
What documents are required to set up a business
What system of taxation to apply for business
Do I need a permit for the production of metal tiles

However, an entrepreneur who has chosen such a direction for himself should understand that the production of roofing materials is a very complex and multi-stage task. It will take time to understand all the intricacies of this process, so a businessman will either have to master a new profession himself, or hire specialists for this.

Metal tile or corrugated board is today the most popular roofing material; for its manufacture, a metal base is used, on which a polymer coating is applied. As a result, a roof element is created, similar to ordinary tiles, but cheaper and more practical. Metal tiles are widely used in the construction of cottages, summer cottages and any other buildings.

What equipment to choose for the production of metal tiles

It will be expensive to buy special equipment for the production of metal tiles, but it will definitely pay off. Moreover, this is a prerequisite for the production of metal tiles. Experienced entrepreneurs recommend immediately purchasing such equipment, which can be used to produce the most popular types of metal tiles, for example, according to GOST 14918 and GOST 30245-94. The thickness of the blanks for products in this case will be 0.45 mm. It is this profiled sheet that most builders choose.

Line (machine) for the production of metal tiles

To equip a metal tile production line, you need to purchase a metal profile bending machine. This is the most important attribute of production. However, the production process may differ slightly. For example, what is most often called corrugated board is simply rolled through a special machine. In the case of metal tiles, it is necessary to additionally give the sheet characteristic bends. Therefore, different technologies require different equipment.

It is immediately worth noting that the equipment for the production of metal tiles is quite complex and without certain knowledge it will not be easy to deal with it. Therefore, you will have to hire a team of professionals so that they perform quality work on the manufacture of roofing material.

The machine can be conditionally divided into three types. This may be standard equipment, with more complex technical specifications and luxury models. The first type is considered the simplest. Such a machine will cost less than others, but its productivity is lower than that of more high-tech models. The rest, respectively, allow you to create more metal tiles in a shorter period of time. In addition, expensive machines can produce roofing material with different waves and different sheet thicknesses.

Scheme of the line (machine) for the production of metal tiles

The cost of the cheapest machine (line) for the production of metal tiles will be 1,200,000 rubles. This is the average price of the most technologically simple equipment. Luxury models can cost twice as much, but for starters, you can limit yourself to simpler options.

Metal tile production technology

The production of metal tiles consists of several milestones. To begin with, the master rolls a galvanized steel sheet. Next, passivation is carried out, that is, a special protective coating is applied, and then spraying - which is the application of a polymer layer. The final stage will be the formation and profiling of the metal tile. Here already finished sheet given the desired shape. After that, the metal tile is cut and packaged. For all these processes, one or more machines can be used.

The technology for the production of metal tiles involves the use of mainly galvanized steel in rolls. There are special requirements for metal. The thing is that the lightness of the finished product depends on the correct choice of thickness, which is very important for some buildings. For Russian entrepreneurs, the most common option is steel thickness from 0.45 to 0.54 mm. Foreign manufacturers often use thinner materials. For example, a popular Swedish company takes 0.4 mm metal sheets as a basis.

Some manufacturers also use a thicker layer of steel. If the sheet thickness exceeds 0.55 mm, this will necessitate the use of special non-standard equipment.

As for the coating, 3 types of polymer are most often used:

Polyester is applied in a layer up to 25 mm. This type of metal tile coating has a lot of advantages, such as a high level of wear resistance and resistance to temperature extremes. Polyester metal tiles are easier to manufacture than other options, which makes it the most popular among manufacturers. Moreover, this material allows finished products inexpensive and high quality.
Pural is a thin coating that can replace polyester. It has a very pleasant appearance and allows you to create a unique design of the house. Working with pural is not easy, as here you need to carefully monitor the applied layer. Thick coating can crack easily.
Plastisol well tolerates difficult weather conditions and allows the production of metal tiles of various shades. But here you need to remember that dark colors will fade very quickly in the sun and heat the room. Of all this variety, polyester is the most popular, affordable and resistant.

It is impossible not to notice that the whole process is carried out on special equipment, but requires the direct participation of a person. Even those machines that are considered fully automatic can produce products with a defect, so the role of a professional craftsman is extremely important here.

The construction industry is one of the fastest growing areas of the manufacturing business. A popular industry with relatively low costs is the manufacture of roofing. With proper organization and development of the sales network, the production of metal tiles can bring net profit for 2-3 years of operation.

First you need to consider the stages of manufacturing this roofing material. The main condition is production room. Its area should accommodate all the necessary equipment, storage and transport structures of the company.

Main stages of production

The analysis should begin with familiarization with the stages of production of metal tiles. There are two manufacturing methods depending on the characteristics of the raw material - steel sheets. For small volumes, in order to minimize the cost of purchasing equipment for production, it is recommended to use metal with an already applied coating. Its cost will be higher than a simple galvanized strip, but the manufacturing time will be reduced.

Formation of blanks. For this, a rolled steel sheet is used. The main equipment during this stage is the unwinder.
Application of a passivation coating and priming. It is necessary for better adhesion of the metal with the polymer layer.
Installation of the main protective coating. For this, polyester, pural or plastisol can be used. To give a certain shade, dyes are added to the composition.
Stamping and cutting. This function is performed by a multifunctional rolling mill.
Preparation for storage and transportation. At this stage, the surface is covered with a protective film, and a marking is applied to the metal tile.

This is the basic scheme for the manufacture of roofing, which can be changed and supplemented depending on technological requirements. Each of the stages should be considered more carefully.

Preparatory

The main determining indicator of the quality of the future roofing is the raw material of manufacture. Cold-rolled coiled steel with a thickness of 0.4 to 0.8 mm is best suited for this. Galvanized coating provides additional protection against premature rusting. In order to cut blanks, an unwinding machine is needed, without which a production line is impossible.

With the help of a loader or similar devices, the steel coil is installed on the rod. Inside it are bearings for free rotation. The beginning of the sheet is installed in the unwind line before being fed for further processing. For this process, it is important to consider such factors.

Sheet arrival speed. Depends on productive capacity the entire line.
If galvanized steel is used without a protective coating already applied, it is necessary to provide for lubrication of its surface. The best way to do this is a special oil sprayed with high pressure nozzles.
If a continuous production cycle is envisaged, it is recommended to purchase an unwinding machine with two drums. As one roll is used, in order not to delay the process due to replacement, a pre-installed second one is connected to the line.

A guillotine knife should be used for cutting. It must be designed for a certain thickness of the metal, otherwise unevenness may form along the edges of the cut.

Applying a protective layer

It should immediately be noted that this requires a special machine for the production of metal tiles. After the blanks have been formed, they enter the surface treatment stage.

This is necessary to give the metal tile not only a unique color shade, but also to protect it from external weather factors.

Passivation

This is the general name for all additional layers that are installed on top of the metal layer. The main problem of this process is the possible delamination of materials of different nature. Therefore, it is important to choose the right primer.

Padding

Using rollers, a primer layer is applied to the sheet, the thickness of which depends on the model of the metal tile. It carries only the operational load and does not affect appearance.

polymer coating

This is the most important stage in production, since the quality of the roofing material will depend on it. The following polymers are currently the most popular.

Polyester. A truly versatile coating that can be up to 25 microns thick. It has good flexibility, which is important during the transportation and installation of metal tiles.
Pural. Compared to polyester, it has better mechanical strength. The maximum allowable thickness can be 50 µm.
Plastisol. It is necessary in the event that there is a high probability of mechanical load on the surface of the metal tile. Despite the large thickness (200 microns), it has one significant drawback - it gradually collapses under the influence of UV rays.

The characteristic shade and matte (glossy) surface of the metal tile is achieved by adding additives. Their characteristics and composition are individual for each production process. Almost all big manufacturers keep them a secret.

Rolling mill and stamping

At the end of the application of the protective layer, it is necessary to give the sheet the appropriate shape. For this, a rolling mill is designed, inside which a system of rollers is located. When the sheet is slowly advanced, a controlled deformation occurs, as a result of which the surface acquires the characteristic shape of a tile.

Subsequently, cutting to the desired length of the metal tile takes place. When compiling technological scheme production at this stage, one should responsibly approach the choice of such parameters.

Distance between waves. It can be 300 to 450 mm. Most often, the equipment is configured for the manufacture of metal tiles with a distance of 350 mm.
The height of the bend can vary from 20 to 39 mm. It directly depends on the thickness of the metal - the larger this parameter, the higher the profile of the product can be.
Cutting device. Its shape should completely repeat the bends of the metal tile. Otherwise, the edges will not match the rest of the surface.

Depending on the choice of these parameters, almost all types of metal tiles can be made. All dimensions must be strictly observed. To do this, the rolling mill is provided with control sensors that signal any change in the set parameters.

Packing and warehousing

Metal tiles are marked before packing and storage. You can find out the date of manufacture and determine the responsible person in case of marriage. This is one of the most effective tools when dealing with complaints.

Wooden pallets are used to store roofing. They have blank side walls and a slatted top (bottom). The polyethylene film does not protect the entire surface of the sheet. Be sure to leave holes to remove condensate. Warehousing should be carried out only in accordance with the rules.

One of the important stages in the construction of a house is the installation of a roof and roofing (roofing). One of the most popular roofing materials is metal roofing. And it is not surprising, because among its advantages one can single out low weight, ease of installation, large color gamut, strength.

Of course, there are also disadvantages - this is low rigidity, which makes it problematic to move along the roof, and a significant waste of material when laying on slopes with complex geometry, poor sound insulation, and heating. All of them can be eliminated, for example, the susceptibility of metal to corrosion can be reduced if the installation of metal tiles is correctly performed.

Metal roofing device

The manufacturer has already taken care of the protection of the metal tile by creating a multi-layer structure of the roofing (see picture).

As you can see, the presence of several layers of protective coating allows us to assert that the tile is made of high-quality material. Therefore, in order for the roof under such a coating to serve for a long time, it is necessary to adhere to the technology of installing metal tiles.

Basics of choice - metal tile parameters:

The thickness of the metal tile. The metal tile is made of sheet steel. The thickness of the metal tile sheet is 0.5-0.7 mm, this is noted in SNiP II-26-76 "Roofs".

Advice. The thickness of the metal within one sheet may vary. Allowable change +/- 5%.

Please note that low-quality metal bends with strong pressure.

The thickness of the zinc layer of the metal tile. This parameter cannot be visually tracked. Therefore, read the passport for the coil of metal from which the sheets are rolled. According to the standard, the thickness of the protective coating should be 275 gr./sq.m. If this requirement is not met, it may lead to the result shown in the photo.

The thickness of the metal tile coating depends on the type (kind) of the coating.

Leaf geometry. Here it is important to pay attention to the fact that the sheets are not only cut evenly, but also do not have bends along the covering side.

The tight fit of the edges is shown in the photo.

With poor geometry, the result will be noticeable visually. At best, the junction will be ugly. At worst, water will flow under the sheet. And do not even hope to tighten such an edge with self-tapping screws.

Metal tile color. Plays a big role in the case of gradual development. That is, when you need to select a shade. In principle, there are two color coding systems, and knowing your color, you can choose the appropriate one.

Types of metal tile coatings

PE (polyester) is applied with a thickness of 20-25 microns. Its disadvantage is fast, but uniform burnout. And also that the snow does not linger on the smooth surface of the sheet.

PEMA (matte polyester). Its layer is 35 µm. It is more resistant to fading and mechanical damage. The rough surface prevents the snow from sliding down quickly. In principle, matte finishes virtually eliminate the need for snow guards.

PU (pural) and PUMA (Pural matt - matte pural). Coating thickness 50 µm. Such a coating can be used in regions with an aggressive environment.

PVC (Plastizol). In a metal tile with such a coating, the most protected core of the metal, since the layer is from 100 to 200 microns.

Nuance. The tone will be different. The rate of color fading depends on the coating of the metal.

Calculation of metal tiles on the roof

Let's illustrate an example of calculating a metal tile for a gable roof with a slope size of 8 by 5.

The calculation of the number of sheets of metal tiles required to cover the slope of a rectangular shape is calculated as follows - the length of the slope along the ridge divided by the width of the sheet.

Nuance. When calculating, rely on the working width. That is, taking into account overlaps. Sheet dimensions for Monterey metal tiles are shown in the photo.

For example, the length of the slope is 8 m.p. Then you need 7.27 sheets to work. Round up to the nearest integer - 8 sheets. For two slopes - 15 sheets. Since one sheet is divided in half and used on the second slope.

Nuance. In this case, you will need to start work from half a sheet.

For the convenience of calculating more complex slope configurations, you can use the constructor (calculator).

You can make drawings of roof slopes and draw a scheme for laying metal tiles, i.e. sheet arrangement.

Nuance. The more complex the ramp configuration, the more material will be wasted.

The length of one sheet of metal tiles is determined by the height of the slope plus the cornice overhang (about 5 cm). It should be noted that the longer the sheet, the less material will go to overlap. But, it is difficult to work with a long sheet, and transporting large metal sheets is costly. Therefore, a sheet longer than 6 rpm is advised to be broken into parts. To do this correctly, you need to adjust the resulting length by the amount of overlap. The overlap must be at least 0.15 m for slopes with an inclination angle of more than 25 ° and 0.2 m for smaller angles. For our example. 5 m.p. divide in half - we need 1 sheet 2.5 m long, and the second 2.65.

At the same time, the manufacturing technology of metal tiles is such that there are unfeasible dimensions. Each manufacturer has their own and depends on the equipment used.

Then for the entire roof you need to buy 15 sheets of 2.5 m each and 15 sheets of 2.65 m each.

Calculation of the number of additional elements for metal tiles.

The components include - a ridge bar, end and eaves straps, a snow retainer, internal and external valleys.

It is easy to calculate the additional elements - the total length of the surface to be closed is divided by 1.9 m.p. - (2 r.m. standard bar length, minus an overlap of 0.1 m). For the lower valley divided by 1.7. The overlap is 0.3 m.

For our gable roof, 5 ridge strips are needed (the length of the slope along the ridge is 8 mp); 9 cornice strips ((8 + 8) / 1.9); 11 end. Due to the construction of the roof, we do not need a valley.

Special planks. These are made-to-order, according to your size additional elements.

Self-tapping screws. Their consumption is 7-8 pcs. per sq.m. metal tiles and 3 pcs. by 1 r.m. additional element. Self-tapping screws should be with a drill, this will simplify installation, and preferably painted in the color of the sheet. This will give the finish a more finished look.

We need 768 pcs. on sheets and 3x(5+9+11) = 834 pcs. They are usually sold in packs of 250. Naturally, it is better to take with a margin.

Sealing tape for metal tiles. It is recommended to install it under the ridge bar.

Film - equal to the total area of \u200b\u200bthe slopes minus the overlap tolerances. For example, a roll of film typically measures 1.5 by 50 rpm. = 75 sq.m. The working area of the film is about 65 sq.m.

Insulation under the metal tile is also equal to the total area of \u200b\u200bthe slopes.

From the tool it is useful: a screwdriver, a hammer, a mallet, a tape measure, a marker, a level, a jigsaw or a hacksaw.

Advice. Cutting a sheet of metal with a grinder is strictly prohibited. From heating, the coating is destroyed at the cut point, and the sheet will begin to rust. Also, sparks can damage the paint all over the sheet.

How to store metal tiles

If you purchased the material before you built the truss system, you need to know how to properly store metal tiles (especially in winter). Sheets must be laid on a flat area, preferably on a pallet. In addition, it is important to protect the metal from moisture, ultraviolet radiation and provide ventilation. If the sheets will be stored for more than a month, they must be laid as shown in the photo.

Additional slats are also stored in a supine position.

1. The device of the truss system under the metal tile

Installation of a metal tile begins at a stage of the device of an obreshetka. It is important to initially fix the boards of the crate at the right distance. Namely, the distance between the first and second board is 300 mm, then 350 mm, 350 mm is the distance from one bend of the sheet to the next. In professional language, the distance is called a tile.

Advice. At the exit of the chimney, in the valley, near the windows, you need to make a continuous crate.

2. Checking the dimensions of the ramp

The main thing is that the roof slopes are even and flat.

3. Fixing the eaves strip for metal tiles

The cornice board directs the water flowing down from the roof into the drainage system.

Nuance. On the cornice board, you need to install long brackets for the gutters of the drainage system. Short ones can be mounted after completion of roofing work.

4. Laying the film of the hydrobarrier under the metal tile

In order to prevent the attic from getting wet in case of sudden rain, and also to further protect the insulation from getting wet, a hydrobarrier film is used.

The waterproofing film under the metal tile is laid on the truss system in accordance with the description, which contains the installation instructions. To avoid leakage, it is necessary to ensure that the film overlaps at least 10 cm. For sloping slopes, at least 25 cm. For hip roofs up to 50 cm (in the roof ridges). The film is fastened with a construction stapler.

Advice. The film is spread parallel to the end if the roof slope is more than 25 °. And parallel to the skate, if less. In this case, it is necessary to withstand a sag of 1-2 cm along the edge of the rafter leg.

In places where the chimney exits, antennas, etc. you need to bring the film 4-5 cm to these elements.

5. Mounting the counter-lattice under the metal tile

The counter-lattice is needed to provide a ventilation gap between the film and the metal tile sheet. Otherwise, at the junction of the film to the metal, it will quickly lose its properties.

For mounting, a rail with a cross section of 30 mm and a length of 135 cm is used.

Nuance. When using a superdiffusion membrane with a high transmittance, a counter grate is not needed.

6. Installation of the lower valley

A metal tile valley is installed if the roof configuration requires it.

Nuance. It is better to install the lower valley not on self-tapping screws, but on a kleimer. So it will maintain integrity, which will reduce the likelihood of leakage. Kleimer can be made independently from scrap metal.

7. Installation of the first sheet of metal tiles

To avoid deformation, the sheet is lifted to the roof using skids (see photo).

Nuance. It is better not to mount sheets in strong winds. Loose sheets may bend.

Installation is carried out from right to left, so that each subsequent sheet covers the groove for water drainage on the previous one.

The bottom row of sheets must be mounted so that the sheet hangs over the edge of the rafter system by 50 mm. (that is why the distance between the first and second board of the crate should be 300 mm, not 350). This is necessary to ensure ventilation and ease of water flow.

Methods for mounting metal tiles are shown in the diagram

The technology of laying metal tiles provides for the alignment of the first sheet along the end of the slope and the cornice. If everything is correct, the sheet is attached from above with a single self-tapping screw. The second sheet is installed with the same requirements and fastened with the first sheet. After all the rows are aligned along the cornice overhang, the sheets are firmly attached to the crate.

Tips:

During the work on the roof you need to move. Therefore, it is better to put on shoes with soft soles and step only into the bottom of the wave.

If during the installation process you need to cut the sheet, it is better to paint over the place of the cut with special paint.

After mounting the sheet, you need to remove the protective film from it (if any). Under the influence of ultraviolet light, it will crumble, and will have an ugly appearance. In addition, it will be much more difficult to remove it.

8. Fastening of metal tiles

Fasteners of metal tiles are carried out with special self-tapping screws. The presence of a sealing gum allows you to tighten the self-tapping screw as much as possible, while not deforming the sheet itself.

The scheme of fastening metal tiles with self-tapping screws - through one wave.

Nuance. Along the length of the end, a self-tapping screw is attached to each tile.

Many advise mounting the self-tapping screw down the wave. It is not right. Because water flows along the gutter of the tile, which means that the slightest violation during installation is fraught with the appearance of rust.

The photo below shows that the self-tapping screw needs to be slightly mixed to the right.

It is also important to properly tighten the screw. Mounting rules are shown in the figure.

9. Installation of additional elements

9.1 Installation of the metal roofing valley. Depending on the design of the roof, an upper valley is installed. When fastening it, they try to tighten the screws so that they do not fall on the lower screws. If clamps were used, this requirement is omitted.

9.2 Installation of a wind strip on a metal tile. Regardless of the configuration of the roof, an end (wind) bar must be installed. The overlap of the planks is 10-15 cm. They are fastened with long self-tapping screws. Based on 1 self-tapping screw per 1 r.m. planks. The wind bar is laid on top of the tile sheet and fixed with self-tapping screws on both sides.

9.3 Mounting of the ridge batten of a metal tile depends on its configuration. When installing a round ridge bar, it is required to close the ends with special plugs.

The broken bar fits more tightly to the sheets, so a plug is not needed.

It is possible to protect the ridge for metal tiles from snow and moisture by laying a special ridge sealing tape (ridge seal).

9.4 Next, we mount aprons (adjacency strips) for metal tiles near the pipes or the slope adjoining strip to the wall. To do this, the wall needs to be pierced by 1-1.5 cm. Insert a bar into the resulting strip, and treat the installation site with sealant. It should be noted that the sealant will break down. Therefore, the junction needs to be inspected and sealed in a new way from time to time.

Nuance. It is forbidden to insert the junction bar into the masonry joint; this may violate the integrity of the wall. And then the manufacture of a reliable structure in the junction node will turn into sabotage.

9.5 Installation of snow guards on metal tiles. Lastly, we install snow retainer strips on a sheet of metal. They are simply necessary if the metal tile is covered with polyester.

Snow guards for a roof made of metal tiles may look like the one shown in the photo.

Often snow retainers are reinforced with an additional bar.

Its cost is low, and the strength of the snow holder increases significantly.

The choice of plank depends on the preferences of the owner, as well as on the intensity of snowfall and the angle of inclination of the roof slope.

How to install snow guards on metal roofing?

The snow retainer bar is located parallel to the cornice in one row or two rows, in a checkerboard pattern.

The final roofing cake is shown in the photo

10. Roof insulation, installation of a vapor barrier film and interior decoration

Installation of metal tiles - video instruction

Mistakes in the installation of metal tiles

In conclusion, I would like to briefly recall the most common mistakes in installing metal tiles:

an unaligned slope will cause the sheet to be bumpy;

incorrectly cut sheets can quickly rust. Therefore, do not use a grinder in your work;

incorrectly screwed self-tapping screws lead to deformation of the sheet;

you need to use only high-quality self-tapping screws with a special rubber seal;

saving on high-quality seals leads to the fact that snow is blown into the roofing pie or moisture gets into it;

it is better to inspect the sheet several times for scratches and paint it over with special paint in time, rather than admire rusty streaks later;

use special (made to order) additional elements if the standard ones do not completely cover the openings. Their manufacture will cost you less than the subsequent replacement of the whole assembly or roofing materials;

do not buy long sheets of metal tiles. The metal has a high coefficient of linear expansion. This means that the sheet will play and, over time, the screws in it will loosen. Therefore, cut the sheet into several parts;

on the other hand, the more joints, the greater the likelihood of leakage. Therefore, stick to the golden mean;

keep the correct overlaps.

Conclusion

As you can see, the installation of metal tiles can be done independently. Adhering to certain rules, laying metal tiles on the roof will be successful and in a short time.

The metal tile is made of profiled steel, which is coated with a special protective coating of different colors with decorative properties. Owners of cottages and private houses are increasingly opting for this building material. In suburban construction, its popularity is due to its appearance, reminiscent of natural tiles; the lightness of the metal, which significantly saves on the power of the structure; affordable price and easy installation. Metal tile roofing () is a guarantee of reliability, durability and beauty of the structure. Buy metal tile can be found at any specialized hardware store.

Manufacturing technology of metal tiles

This multi-stage process requires deep knowledge and is understandable only to specialists. That is why only large factories equipped with modern technology. The technology for the production of metal tiles has always remained unchanged, only certain stages have been corrected and improvements have been made by manufacturing companies. However, the constant changes until today, rather, relate to the stages of applying a polymer protective coating. This is directly related to the regular appearance of new types of technological polymers, changes in which also affect the properties of the product. We can say that simple roofing materials began to give way to more modern high-tech tiles.

Equipment for metal tiles

The material is produced on automatic and semi-automatic equipment. The cost of professional equipment, which at the output produces a minimum of defects and a maximum of quality, and on which it also depends metal tile price, includes:

rolling mill,
roll unwinder,
roller knife for line cutting,
curly scissors for cutting sheets,
stamper-former,
automatic stacker,
table for receiving products,
equipment installation,
training.

Metals for metal tiles

Products are made of cold-rolled hot-dip galvanized steel coils. It is installed in the unwinder, which passes the material through the lubricator. At this stage, both the quality of the metal and its thickness are important. The rolled steel itself must have a smooth and flat surface, since the presence of defects significantly reduces the reliability of fastening layers. The equipment works on the principle of metal blanks with a thickness of 0.40 to 0.55 millimeters.

If the manufacture of metal tiles from thin steel reduces the mass of the coating, then, on the other hand, it requires greater accuracy during installation. Thick steel, in turn, is difficult to form, requiring the use of specialized production lines. The most optimal steel thickness is 0.5 millimeters, which is formed without special efforts, and the material is not inferior in its strength.

Metal tile coatings

They prevent the development of corrosion on steel, give the product an aesthetic appearance and prevent fading under the influence of ultraviolet rays. Long service life depends on the quality of the coating roofs made of metal. The application of a polymer coating in automatic mode occurs according to the following scheme. At the very beginning, passivation is done, then a primer, then a polymer coating and a protective varnish are applied. The polymer composition is applied only from the outside of the product, from below it is covered with a colorless protective layer.

There are several types of polymer coating:

Polyester, which has a high degree of wear resistance and strength and allows the formation of sheets already covered with a protective layer.
Pural, which has a silky-matt texture, but because of its thickness, it is less resistant to molding, but more resistant to external factors.
Plastisol, which has a wide range of colors and is resistant to temperature and mechanical stress, but not protected from fading.

Production technology

The metal tile, on which the protective coating is applied, receives the corresponding profile after it enters the molding mechanism. At the next stage, the sheet is cut to the required dimensions and packed. In small and medium-sized enterprises, manufactured by cold rolling, it passes following technological processes:

A roll of galvanized steel with a polymer coating already applied is put on the decoiler.
The steel strip is mounted on the rolls of the rolling mill.
A program is required with the appropriate parameters.
After pressing the button, the automatic control system starts.
The sheet passing through the rollers of the rolling mill is subjected to longitudinal rolling and takes a given shape.
At the next stage, each sheet is cut using hydraulic shears in accordance with the pattern programmed by the operator.
Next, the sheets are fed to the receiving table, stacked for packaging and storage. For this purpose, special flights and polyethylene film are used for the safe transportation of products, which are fixed with metal bundles on a wooden pallet.

The main advantages of metal tiles

reliability
strength
simple installation
light weight
a large selection of matching shades and colors
long service life
wide temperature range
sunburn avoidance
availability of a complete set of accessories
environmental Safety
affordable price

Disadvantages of metal tiles

low level of thermal insulation
cutting loss
installation of the product only on rolled roofs
noise during precipitation
tapping on the crate in the wind.

How to cover the roof with metal tiles?

The customer, thanks to a wide range of shades, can choose any suitable color of the roof, depending on the appearance of the building. The main indicator when choosing is the shape of the roof, that is, its architectural solution. For each form, its own size of the metal profile is selected. To determine the size, careful measurement of roof slopes. Sheets on the crate are stacked with a protrusion of the edges by 40 millimeters. In the process of covering the roof, make sure that the lathing and rafters are not skewed, otherwise the appearance of the structure may be completely deteriorated without further possibility of repair. The boards used to organize the crate are treated with a special antiseptic. The distance between them should be approximately 350 millimeters.

Before laying the crate under it on the rafters, it is necessary to lay waterproofing layer- the material is overlapped from the eaves to the ridge. The installation process must begin with laying sheets on the end sections. This type of installation applies to a gable roof, and for a hipped roof, the sheets are laid starting from the high point of the slope and on both sides. Installation of sheets is carried out with their initial fastening with self-tapping screws on the ridge, with final alignment along the eaves. Self-tapping screws with an octagonal head must be painted to match the metal tile used. They should have a sealing rubber washer. About seven pieces of self-tapping screws are consumed per square meter of steel profile.