Fastening wall corrugated sheets to metal purlins. How to properly attach corrugated sheeting to a fence. Roofing installation

The strength of any structure mainly depends on the use quality materials And correct installation. Any errors in installing the corrugated sheet to the sheathing will negatively affect further operation and durability.

What fasteners are used to mount the corrugated sheeting to the sheathing?

Hardware are special fasteners designed for installing corrugated sheets. Currently industrial enterprises produce quite wide choose fasteners. They may differ from each other in strength and installation method.

The product range consists of rivets, screws, self-tapping screws, dowels and roofing nails. All of them are made from various materials, differ in design and scope of application. An incorrect ratio of the fastening and the material that is attached to it will lead to breakage or instability of the structure being built.

Metal purlins and corrugated sheets are connected to each other with rivets and self-tapping screws for corrugated sheets. The differences between them are significant. The advantages of a self-tapping screw over a rivet are its shape. The sharp tip, like a drill, makes a hole in the surface, so during installation there is no need to pre-drill a hole. It does not require the use of any additional tools or operating experience. Even an inexperienced builder can handle the installation. Also, if handled correctly, its service life can be quite long.

If you need to dismantle the structure, the self-tapping screw will be quite suitable for reuse. Color variety screw heads, allows you to select fasteners in accordance with the color of the corrugated sheets and thereby disguise the joints with each other.

Installation of the rivet requires a hole and the presence of additional tool such as a drill. If the position of the roofing material is inconvenient, installation may cause inconvenience. To do this, the corrugated sheet is bent to the required angle, which can lead to its deformation and damage. Reuse of the rivet is not possible, because if it is disconnected, it disintegrates and loses its working abilities.

Considering the characteristics of hardware in the form of a rivet, the riveting method in installation has a narrow focus. It is mainly chosen when other methods are not available, for example, in connecting corrugated sheets to metal hollow girders in the form of pipes and corners, where fastening can be done on one side. Despite the fact that rivets are less popular, installation with their help is quick, and the structures are durable and waterproof.

Rules for fastening corrugated sheets

Fastening the corrugated sheet to metal profile performed with self-tapping screws with rubber gaskets. This will ensure a tight seal at the joint. The sheets are overlapped with 1-2 notches. To sheath the walls and roof, the sheets are placed vertically on top of each other by about 10-15 cm. The joints are fastened together, and during installation, self-tapping screws are screwed into the concave part. This fastening option ensures the tightest possible fit and eliminates the formation of leaks at the joints. As additional protection to prevent moisture from entering from the outside, the joints are sealed with silicone sealant.

Wall and roof cladding performed in any convenient direction. The number of hardware is calculated based on the length of the covered area and the number of waves. On average, this is 21-25 pieces for the entire surface. From below and from above, fastening is carried out in each concave part of the sheet; in the middle part, gaps of 2-3 waves are allowed. On average, the consumption is 7-8 screws per 1 sq.m.

After installation is completed, the shavings that remain after installing the hardware should be removed. Otherwise, it will rust and damage the surface of the corrugated sheet.

Attaching sheets to the roof occurs in accordance with certain rules. The pressure on the screw when screwing in should be taken into account. Too much load can damage the surface of the deck. Weak tightening will leave gaps and the roof will leak.

Corrugated sheets are laid, starting from the bottom and gradually moving up. The protrusion of the end of the first sheet beyond the roof level should be 5-10 cm.

How to secure corrugated sheets with self-tapping screws?

Self-tapping screws as fastenings are intended for mounting corrugated sheets on both metal carcass, and on wood. Before screwing in the screw, you need to bait it. The use of drills or screwdrivers without a rotation and speed regulator is strictly prohibited; this can lead to damage to the fasteners or the surface of the corrugated material.

Maximum screw speed metal sheet to run is 1500 rpm. It is necessary to monitor the angle of inclination of the hardware. Curvature is not allowed; the location of the self-tapping screw to the surface must be strictly perpendicular, otherwise there will be a shift to the side and it will not twist.

The use of self-tapping screws for mounting corrugated sheets to purlins without drilling is carried out only if the thickness of the latter does not exceed 2 mm.

The size of the screws depends on where the fastening work will be done. Diameters vary from 0.48 to 0.63 cm, lengths respectively from 1.9 to 25 cm. outdoors they are subject to greater load during operation. This is influenced by various external factors and weather conditions, such as strong wind, thunderstorm, etc. When installing profiled sheets on the roof, you should choose fasteners of a smaller diameter, due to the likelihood of shifts. For a fence, on the contrary, a large diameter is suitable due to the possibility of rupture.

How to secure corrugated sheets with rivets?

The rivet consists of an aluminum sleeve with a metal core. The installation process using rivets is not difficult. Installation is carried out on one side only and does not require special effort on the part of the employee.

To fasten corrugated sheets to a purlin or to each other with rivets, it is done using a special rivet tool, having previously drilled the inlet holes. Due to squeezing of the sleeve at the attachment point, an influx of the cap is formed. Retracting inside the gun, the fastening cap is formed in the required position and holds the elements together.

Rivets are made of aluminum and galvanized steel. They are lightweight and easy to handle. The diameter and material of the rivets are selected depending on the thickness of the metal sheet.

Fasteners with a larger diameter will provide more reliable fastening, which in turn will have a positive effect on general design and will extend its service life. Rivets of the flange type are sold in the following assortment:

hidden - after installation they are invisible on the surface;
wide - to obtain a strong connection;
standard - universal and suitable for any type of fastening.

The correct fastening of the corrugated metal sheet to the purlin or sheathing also depends on the length of the rivet. Its selection should be carried out in such a way that before installation the end of the rod extends beyond the fastening limits by no less than 1 cm.

A larger protrusion will cause flaring further from the attachment point and the proper density will not be achieved. A protrusion of less than a centimeter will not provide sufficient expansion of the cap. The required length of the rivet is determined by adding the thickness of the corrugated sheet and the thickness of the purlin.

An important point is the choice of rivet color. For structural integrity, aesthetic appearance and invisibility of the fastening place, it is better to select fasteners in the same color as the corrugated sheet.

Profiled metal products are perhaps the most commonly used in last years roofing material. This is due not only to its high strength and wear resistance, but also to its relatively low price. If you have never encountered it before and do not know how to attach corrugated sheeting to a roof, carefully study this article.

What type of corrugated sheet should I choose?

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The strength and reliability of this type of material depends on several parameters:

steel thickness: Naturally, the higher this indicator, the better; too thin steel will bend at the slightest gust of wind; The most universal material is considered to be 0.3-0.5 mm thick; but it is better to use a more durable corrugated sheet 0.45-0.5 mm
corrugation shape and height: maximum rigidity is guaranteed by a trapezoidal wave; for roofs with an angle of inclination from 45° optimal height– not less than 20 mm; For flat roofs this parameter should be higher
zinc coating thickness: it should be 140, or even better 275 g for each square meter; a coating of less thickness will quickly become unusable, because zinc can weather over time

Most often, materials marked C20 or H20 are used for roofing. The number 20 means the profile height in millimeters. The “H” marking is used for load-bearing (roofing) material. It has a wave in the form of a trapezoid of sufficient height, equipped with stiffening ribs. You can use universal (NS) and even wall corrugated sheets, marked with the letter “C”. You only need to choose a material with a wave height of 20 mm. A roof assembled from the KP20 profile will be more reliable. The letter “P” in the marking indicates the presence of a groove for collecting condensate, protecting the roof even from small leaks.

The increased height of the corrugation will provide the material with increased rigidity. This material costs a little more. But the final price of the roof will be equal. After all, the consumption of profiled metal C10 or P10 will be higher, since it will need to be laid with an overlap of 2 corrugations. For KP20, an overlap of 1 wave will be enough.

The load-bearing (roofing) material, marked with the letter “H”, has a higher wave in the shape of a trapezoid. Such stiffeners provide better resistance to snow and wind loads. But when using a more massive wall with a corrugation height of over 45 mm, reinforcement will be required rafter system, otherwise it may collapse.

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Material coated only with a layer of zinc will be cheaper. Corrugated sheeting with colored polymer protection looks more original. But the main function of such a coating is not only decorative - it is intended to additionally protect the steel from premature corrosion. It will be better if it is matte - such coatings do not fade so quickly. Polyurethane spraying is considered the most reliable and durable. Corrugated sheeting coated with polyester will cost less.

It is impossible to check the actual thickness of the coating without special tools. Therefore, it is better to avoid purchasing material from little-known manufacturers. Be sure to pay attention to the straightness of the edges and the quality of the primer on back side sheets. There should be no bends or breaks in the sheets.

Required quantity of material

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First you need to determine the total roof area. The calculations here are simple - you need to find the area of each triangle (or rectangle if the roof is gable), and then add the resulting numbers.

Determine the required number of rows of corrugated sheets horizontally. To do this, just divide the length of the roof slope by the width of the sheet. The calculation is carried out without taking into account the overlap (it is 80-85 mm). Don't forget to round the total up. To calculate the number of sheets vertically, divide the height of the roof by the length of the sheet. In this case, it is necessary to add the length of the eaves overhangs 200-300 mm to the height of the roof.

It remains to multiply the number of rows vertically and horizontally. Please note that we have received the number of sheets that will be needed to cover only one slope. If the roof is gable, naturally, the number must be doubled. For a hipped roof, increase it by 4 times accordingly.

To determine the amount of material that will be used for cutting, for clarity, it is better to draw a diagram of the layout of sheets on paper. For complex roofs It is advisable to use online calculators - they will make calculations more accurately.

Accessories

In addition to the corrugated sheeting itself, you will also need to purchase fasteners (screws) and additional elements for mounting on ridges, valleys, in the area of the chimney, and adjacent walls. You will also need corners, end and cornice strips. We will tell you more about each of them below. When calculating the required number of additional elements, it is necessary to take into account that they, like the corrugated sheet, are mounted with an overlap.

Lathing type

After installing the rafter system, laying waterproofing and sheathing, they begin to attach the corrugated sheets. To install the sheathing, you will need to purchase timber 100-150 mm wide. With a small rafter pitch of 60-80 cm, a 25 mm beam is sufficient. If the distance between them is more than a meter, use it for lathing. thick timber 50x50 cm.

If the rafters are spaced 80-100 cm apart, it is enough to purchase a 32 mm beam. To fasten the waterproofing, use a 4-5 cm counter-strap.

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When choosing a sheathing pitch, they are guided by the thickness of the metal, the height of the corrugation and the angle of inclination of the roof. Sheets with small height Corrugations up to 10 mm are laid only on a continuous sheathing. This material is used mainly for roofing sheds and other utility rooms. A continuous sheathing will also be needed when laying the material on a roof that has a slight slope of up to 15°.

Corrugated sheeting C21 or MP-20R with a thickness of 0.5-0.7 mm is mounted on a lathing with a pitch of 30 cm. If the angle of inclination of the roof is more than 15°, a distance between the bars of 60 cm is sufficient. For NS-15 corrugated sheeting, this figure is equal to 50 and 100 cm, depending on the angle of inclination, respectively.

Cutting corrugated sheets

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Let's start with the fact that most manufacturers strongly discourage the use of an angle grinder for these purposes. After all, when using abrasive discs, due to the strong heating of the metal being cut, the protective polymer layer of the corrugated sheet can melt. Accidentally falling sparks can also damage it.

Using an angle grinder in practice is still possible. But only when using special discs of small thickness (1.0-1.6 mm) designed for cutting metal. The teeth in them are made of hard alloys. It is better to select a larger diameter of the circle. Otherwise, when cutting sheets with a large corrugation height, its lower corners will have to be cut.

Hand circular saw

Another cutting method is to use a hacksaw. When using it, the cuts are neat, even, and without jagged edges. But you can’t process a large number of sheets with a hacksaw. Yes, you can only cut in a straight line. Metal scissors are used mainly for cutting across corrugations.

A good tool for cutting corrugated sheets with a wave height of up to 25 mm is a jigsaw with fine teeth. It is necessary to work at the highest speeds, making reciprocating movements. The tool is tilted along the sheet.

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Sufficiently even cuts in a straight line are obtained using circular saw with a special disk, equipped with pobedite soldering. In a short time, you can use it to complete a significant amount of work. To protect against overheating, the tool is set at low speed.

To protect cut lines from corrosion, it is better to cover them, as well as random scratches, with enamel. It doesn't take that long to do this. And the cost of such coverage will be minimal. As a result, the roof will last longer.

Screwing in hardware

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The correct force for screwing in self-tapping screws

Let's take a closer look at how to attach corrugated sheeting to the roof with self-tapping screws:

Unlike slate, which is attached to the upper wave, self-tapping screws are only screwed into the metal profile to the lower ridge. Otherwise, deflections will form on the material, clearly visible from afar. Plus, under the weight of snow, the self-tapping screw will not tear out of the tree
At first, the screws are not screwed in completely, but only “baited.” They are finally pulled together only after the sheets have been aligned.
The distance between fasteners depends on the type of profiled sheets and the planned wind load. On average, you will need 10 pieces per square meter. m. General rule– sheets located at the edge are secured big amount self-tapping screws They are placed more often along the bottom and top of the roof - through a wave
On the rest of the sheet proceed as follows. In places of overlap, install 2 self-tapping screws. The overlap of each subsequent sheet is fixed on the side and along the bottom edge. In the rest of the section, the screws are placed across the wave in a checkerboard pattern.
In areas with difficult weather conditions(winds, hurricanes) along the bottom and top of the roof, corrugated sheets are fixed more often, in each wave. On the rest of the sheet, the number of screws also increases
The ridge strip is screwed every 30 cm
How to attach gutters to the roof under corrugated sheeting? If the roofing system has a drip edge (an angular strip running along the roof overhang), it is attached before installing the sheathing on top of the waterproofing
Self-tapping screws must be positioned strictly at 90° to the surface. Their length is selected so that they fit into wooden block lathing by 3-4 cm. Depending on the type of corrugated sheeting, it can be 4.8-6.3 mm
There is no need to tighten the fasteners too tightly. There should be about a millimeter between it and the profiled sheet. Otherwise, during thermal expansion of the material due to temperature changes, cracks will appear in it. Plus, a tightly screwed screw will pinch the rubber gasket. Due to the effect of stress, cracks will quickly appear in it, through which water will begin to penetrate into the cracks.
Installation of the wind strip

All that remains is to figure out how to attach additional elements of corrugated roofing sheeting to the roof:
1. In order to avoid having to walk on the profiled sheets once again, the planks at the junction of the slopes begin to be fastened only when the profiled sheet has already been laid on one of them. When laying the second slope, the sheets will simply be slipped under the bar and then fastened
2. It is allowed to attach the plank after installation of the adjacent slopes. The advantage of this method is the control of the ventilation gap on the ridge and the ease of installation of barrier elements to protect against insects and birds. But the likelihood of damage to the surface of the sheets during repeated use increases.
3. Unlike sheets, planks are fastened in such a way that the hardware hits the crest of the wave of the sheet lying under the plank. The ridge elements are screwed in the same way.
4. In the area of the ridge, it is better to lay a porous seal for corrugated sheets that follows the shape of the waves. It is able to breathe, that is, allow vapor to pass through, while at the same time protecting the under-roof space well from moisture, wind and dust.
5. Don’t forget to install wind guards on the gables - they will protect the roof from the damaging effects of the wind. They are fixed in increments of 20 cm.
Many people confuse the methods of fastening slate and metal profiles. Indeed, the slate is attached to the upper ridge. This is done so that moisture, flowing down the wave, does not get through the hole into the under-roof space. The screws are protected by a rubber gasket, and there is no such danger.

The fastening of corrugated sheets should be more durable - after all, unlike heavy slate, metal sheets have a fairly high windage capacity.

Finish roofing is one of the essential elements building, which takes on the “blow” of all atmospheric phenomena - wind, rain or snow. Since the cards roofing sheet complex wave-like shape, there are certain rules for attaching corrugated sheeting to the roof, which are discussed in this article. You will learn what screws are needed for corrugated roofing, their fastening schemes and consumption per 1 m².

Source s-arena.by

Correct fastening of corrugated sheeting on the roof with self-tapping screws

When installing the outer surface of the roof, a very important point is correct use fasteners In strong winds, tearing loads on finishing coat can be up to 600 kilograms per square meter. In addition, excessive deformation of the sheet when tightening the screw can lead to a violation of the tightness of the roof at the place of its installation. This often leads to the need for a complete rebuild. roofing pie to determine the location of the leak and eliminate it. The first thing you need to understand is what kind of screws are needed for corrugated roofing. Not every screw is suitable for this, so you need to select special fasteners, ensuring the pressing force of the sheet against the sheathing and the tightness of the fastening.

Source ohiogas.info

Select fasteners that match the color of the roof covering and are equipped with an elastic plastic sealing washer.

When screwing the screw, a screwdriver with tightening force control is used. The screw is installed in the cavity strictly perpendicular to the surface of the corrugated sheet; during installation, the surface should not bend inward. If there is a skew when screwing, the screw must be unscrewed, a wooden plug must be driven into the hole using PVA-M glue and the self-tapping screw must be installed correctly.

For the final roof covering, profiled sheet CH35 or CH45 is used. Accordingly, fasteners are used in the form of self-tapping screws with a length of 20 to 50 millimeters:

during installation into the depression sheet – 20 mm long;

during installation at the overlap point adjacent sheets – 50 mm;

for fastening ridge strip through corrugated sheeting - 50 millimeters or more, depending on the roof structure. In some cases, longer fasteners can be used.

When purchasing screws, you need to take into account a large percentage of their quality rejection. The main disadvantage of the screws is that the drill end is not sharp enough, which can lead to rolling of the edges of the holes and deformation of the sheet. The screw diameter is selected within the range of 4.8-6.3 millimeters.

Source stroitel-list.ru

How to properly install corrugated sheets on the roof

The roof is installed in in a certain order ensuring its strength and tightness.

Installation of individual sheets begins from the lower left end. On the first vertical row there is a gable overhang no more than 40 centimeters wide. But the sheets are not stacked in order, but in a checkerboard pattern, that is, the second will be the first sheet of the second vertical row, then the second of the second vertical row, then the second of the first. In this way, the slope of one side of the roof is formed, after which the installation of the second begins in the same order. The verticality of the rows must be controlled with a mounting cord.

The vertical overlap of the sheets should be at least 20 centimeters; horizontally, this figure depends on the design of the corrugated sheet. Under normal conditions, such an overlap is performed in one wave, in more severe climatic conditions - in two. The decision is made at the design stage depending on the climatic conditions in the construction region.

Source legkovmeste.ru

For a standard sheet 0.8x1.1, the distance between the screws is 0.5 meters, that is, there are 4 pieces per 1 m2. But you need to take into account that along the lower edge of the sheet of the first row of the roofing pie, fasteners are installed in each lower shelf.

The gable edges of the finishing coating are attached at intervals of about 250-300 millimeters. In addition, overlapping side, ridge and wind strips are attached with the same parts, increasing their specific consumption.

The average consumption of fasteners is taken to be 8 pieces per square meter, with 4 pieces 35 mm long, 2 pieces 20 mm and the same number longer, from 50 mm. But you need to keep in mind that this indicator directly depends on many factors:

roof structures;

sheet thickness finishing coating;

applied profile.

Video description

How not to attach corrugated sheets to the roof is shown in the video:

Fastening corrugated sheets with self-tapping screws on the roof is one of the the most important moments for the installation of the roof and this must be taken into account when installing it.

On our website you can get acquainted with the most . In the filters you can set the desired direction, the presence of gas, water, electricity and other communications.

Determining the amount of fasteners per sheet of corrugated sheeting

The easiest way to answer this question would be to simply count. If there are 8 screws per 1 square meter of roofing, and its area is: 0.8 x 1.1 = 0.88, it is logical to recalculate this way: 8 x 0.88 = 7 pieces, rounded. But consider the specific consumption of fasteners in in this case There’s simply no point; it’s much easier to calculate the total roof area and use the generally accepted consumption rate per square meter. This value is always calculated when designing a structure. In addition, such a calculation is made taking into account the features and dimensions of the profile.

Source raflon.ru

Installation of waterproofing and sheathing for corrugated sheets

The supporting surface for the finishing coating - the sheathing - is made from a board 25 millimeters thick or sheet materials like plywood, chipboard, OSB or other similar ones. The material is attached to the rafters with nails or self-tapping screws. Waterproofing is installed on top of the sheathing, most often roofing felt is used for this, but the use of thick polyethylene film is possible.

Video description

You can see how to install a profile from corrugated sheets in the following video:

Installation is carried out in the following order:

Board sheathing There are two types - sparse or continuous. The latter is carried out with a distance between boards of up to 5 centimeters; the sparse packing step provides for a distance between boards of up to a meter, depending on the format of the finishing sheets.

The boards are being stuffed, starting from the bottom edge of the rafter system horizontally.

Two or three boards in the ridge space are installed closely no gaps.

On top of the sheathing waterproofing is installed from roofing felt. The flooring starts from the bottom edge of the roof. The sheets are laid with an overlap of up to 15 centimeters, the joint is glued with construction tape or joined using bitumen mastic.

The main task of waterproofing is to seal the supporting base for the finishing coating and drain condensate from the under-roof space.

This coating structure is used when installing a “cold” roof. To make it warm, you need to form a roofing pie using insulation and vapor barrier films. The use of roof insulation reduces heating costs by up to 20-30%.

Source qor.vogemuqa.ru.net

On our website you can find contacts construction companies who offer services roof design and repair. You can communicate directly with representatives by visiting the “Low-Rise Country” exhibition of houses.

Causes of roof leaks

This phenomenon can only occur as a result of installation errors or breaks in the insulating material. Even installation of waterproofing on the sheathing is also important. If swelling of the material is observed in certain places, leaks are inevitable, and primarily from condensation, even if the finishing coating is applied perfectly.

The second cause of leaks may be poor-quality cutting of sheets, leading to deformation and loss of flatness of the roofing material.

Roofing installation

Fastening the corrugated sheeting with self-tapping screws on the roof, as mentioned above, is done from the lower left corner of the slope. The work is carried out in the following order:

First of all, along the lower edge of the sheathing drip is installed– a special strip for draining condensate from the under-roof space into storm water inlets.

First sheet laid on the sheathing parallel to the rafters, thereby forming the amount of overhang. For a standard sheet it should be no more than 40 centimeters.

Correct fastening of corrugated sheeting on the roof with self-tapping screws is carried out taking into account the above requirements - installation in a stream at right angles.

Source iv-project.ru

The second sheet is installed with side overlap in one or two waves, which depends both on the properties of the coating (thickness) and the operating conditions of the roof characteristic of the region of construction.

Further installation is carried out staggered until the slope is completely covered.

In the same way the second slope takes cover, after which wind strips are installed.

The last operation to be performed is installation of ridge strip, which finally forms the finishing coating of the roof.

Cutting corrugated sheets

If it is necessary to adjust individual cards to the installation site, use various ways. It should be noted right away that cutting methods may be different, but you should immediately warn against using technologies that lead to heating of the sheet, for example, cutting with a grinder. In this case, detachment occurs paint coating, leading to its further destruction in an accelerated manner.

You should use other available methods: hand or mechanical metal scissors or a jigsaw.

Source legkovmeste.ru

Which screws are suitable for installing corrugated roofing

For this coating, special fasteners are used. In Russia, self-tapping screws for corrugated roofing are produced taking into account the requirements of GOST 17917-86. Distinctive feature Such screws consist of the presence of a drilling part at the front end, which allows drilling of the material during the process of tightening the screw. The second feature is that the head is hexagonal in shape, and the manufacturer’s hot stamp is applied to the end. There is also a support washer with a plastic spacer underneath it. (See Figure 2.)

Using other fasteners will usually result in multiple leaks. roofing.

Conclusion

Despite its apparent simplicity, installing corrugated sheets requires certain skills and experience - starting with knowledge of how to correctly “tie” cards together and ending with the skill of correctly screwing in self-tapping screws - so that they go to the required distance. Therefore, installation work must be trusted to professionals who will carry it out quickly, efficiently and with a guarantee.

For proper installation of a fence or roof before starting work on attaching corrugated sheeting to metal or wooden beams you should understand the choice of suitable fasteners, their quantity and fastening technology. Only by making the fence according to the rules can you install a reliable fence.

Self-tapping screws for fence

For attaching corrugated sheets to metal or wooden sheathing self-tapping screws are suitable, which have a number of advantages compared to other types of fasteners (for example, rivets). Firstly, there is no need to pre-drill a hole for attaching corrugated sheeting; secondly, if necessary, the self-tapping screw can be easily unscrewed without compromising the integrity of the structure; thirdly, anti-vandal models of self-tapping screws prevent them from being unscrewed, which is an excellent protection against theft.

When installing corrugated sheets to metal purlins, care should be taken Special attention the type of screws used, since the quality and reliability of the connection will depend on them. With a metal thickness of up to 3 mm, 4.8 * 19 mm self-tapping screws are ideal for the job, and for thicker material (6-10 mm) larger bolts - 5.5 * 25 or 35 mm - will be needed for fencing. When choosing the color of a profiled sheet covering, you should pay attention to its markings and select the color of the screws to match it.

The design of the head of the corrugated sheet fastenings is represented by a classic hexagon, however, in order to protect against vandals, you can purchase self-tapping screws with a special non-standard head, the shape of which is designed to work with a specific shape of the cue ball.

Regardless of the shape of the head, the self-tapping screw must have a washer with a rubber or plastic lining. This will ensure a tighter fit to the purlins or wall, and will also reduce the risk of coating corrosion.

How to properly attach a metal profile?

To securely fasten corrugated sheets to metal purlins, the structure should be installed according to the following rules:

There should be a short distance from the bottom edge of the fence to the ground, about 10 cm;
The profiled sheet is fastened to the sheathing veins between the posts in the lower wave for a tighter fit to the frame and to minimize deformations;
The overlap between adjacent elements should be 1-2 waves. When attaching corrugated sheeting to the roof, the overlap can be increased to 3-4 waves for better sealing;
The optimal distance between pillars or pipes is 2.5 meters. You need to install the pillars without a slope; you can check the slope with your own hands using a plumb line;
To fix the sheets at the same level before screwing, it is recommended to stretch horizontal ropes between the posts along the veins and the places where they are fastened;
After screwing in the screws, you need to remove the chips and process them with your own hands a small amount anti-corrosion solution.

How to cover the bottom of the fence?

During construction, it is undesirable to leave a gap between the fence and the ground, since the profile is susceptible to corrosion, and the fence itself becomes less stable. To cover the bottom of the profile sheets, you can:

Fill the cracks with soil or crushed stone. To prevent animals from undermining the fence, it is recommended to first dig a ditch 10 cm deep and fill it with a compacted layer of crushed stone;
Another simple way is to close the space using a chain-link mesh, slate scraps or corrugated sheets;
The most labor-intensive option is brickwork or monolithic concrete base, for which you will need to make a foundation of concrete and a metal frame.

Laying profiled sheets on the roof

Most often, the profile is not attached to fence posts, but is used as a roofing covering. You need to fasten the roofing material with your own hands according to a different scheme:

The sheathing is most often made of wood. On wooden joists waterproofing is laid, and then thin beams are fastened onto which the roofing material should be installed;
Laying corrugated sheeting on the roof starts from the ridge down, with a slight overlap. To bypass the pipe, the profile is cut and laid around the pipe along beams. The roofing parts can be screwed on with self-tapping screws or secured with rivets;
It is necessary to ensure that the covering lies flat both at the ridge and at the edge, and the corrugated sheeting can be attached to the joists only when it is laid according to the pattern. To check how evenly the sheets are fastened, you can use a plumb line or a rope stretched between the joists.

To install a fence, cover a roof or install a ventilated façade along a wall, you need to calculate the amount of material and screws required for the job.

To the problem correct fastening corrugated roofing is influenced by many factors: the length of the slope, its slope, the rafter system, the quality of the material and many others. An important point will be what specific type of sheet is used, according to which the frame design for the sheathing is selected.

Before you start installation work, it is worth understanding all these nuances in order to really get a high-quality roofing deck that will withstand the warranty period.

What factors influence the laying of corrugated sheets?

There are several parameters that must be taken into account when assembling a roof from corrugated sheets. Failure to comply with them can lead to a reduction in the service life of the roof, as well as its leakage after a short period of time:

Construction of the rafter system. Under the corrugated sheeting, appropriate rafters and sheathing must be used. You should pay particular attention to this issue when using corrugated sheets intended for wall cladding. It is thinner than the others and can simply be deformed in winter period. To eliminate this possibility, a continuous sheathing is used.
The angle of inclination of the slopes. Corrugated sheeting cannot be installed on slopes of less than 8 degrees, although there are some manufacturers who recommend laying the supporting sheet with a slope of 5.5 degrees. Another nuance is overlap. On flat roofs it should be larger than on steep ones.
Length of slopes. The easiest way is to cover the roof with corrugated sheeting if the length of the slope does not exceed 6 meters. If this parameter is larger, then it is more convenient to fasten the material in 2-3 rows, while observing the laying pattern and the technique of connecting adjacent rows.

Correct installation of profiled sheets

So, how to properly lay and fasten corrugated sheets on the roof and what should you know about this type of work?

Installation should begin from the lower right corner, placing the first sheet with an edge overhang of no more than 50 mm, screw a self-tapping screw into the center, then, if necessary, turn the corrugated sheet to correct the position along the edges of the slope.
Next, attach the sheet upwards (if there is more than one row) or to the left if there is only one row. That is, the scheme is followed from bottom to top and from right to left.
If there are capillary grooves, adjacent sheets are joined so that they coincide, otherwise gaps will form.
Also, when laying adjacent sheets, be sure to observe overlap. In this case, all joints are treated with sealant and additionally fastened with self-tapping screws screwed into the wave.
When moving on a roof already covered with corrugated sheeting, you should not step on the corrugated protrusions; shoes should be selected with soft soles, and your feet should be placed in the locations of the sheathing boards.

Important! With a short length of slopes (up to 6 meters), it is best to lay the sheets in one row. If this is not possible, in order to maintain the exact order, you need to tighten the marking cord.

Some experts advise doing the installation according to the pattern from right to left, increasing the rows after laying the bottom one. This option is quite acceptable.

When laying in several rows, it is very important to observe the overlap installation, having previously calculated it according to the angle of inclination of the slope.

How is the overlap of profiled sheets calculated?

The overlap of corrugated sheets is calculated at the roof design stage. After all, not only the tightness of the roof, but also the consumption of material depends on this indicator.

Exist online calculators, with which you can calculate cost options. However, no program can replace an accurate calculation for a specific roof, especially one made according to an individual project.

Specifically, you can be guided by the data given in the tables below:

For wall and load-bearing wall types of corrugated sheeting, the overlap can be estimated in accordance with the markings (and of course the thickness) of the sheet.

When laying roofing sheeting marked “NS”, it is best to make a calculation in accordance with the slope of a particular roof slope.

Important! When designing a roof, it is worth remembering that the greater the slope of the slopes, the higher the structure itself, and therefore its windage. As a result, with insufficient and improper fastening strong winds can destroy the structure!

Types of corrugated sheet fastening

IN roofing works With profiled sheets, two types of fastenings are used: in the bend of the corrugation to the laths and in the wave when joining the sheets. How is this done and with what fastening materials?

Deflection fastening

In this way, the main points of fixation of the sheet to the roof sheathing are located. The material used is a 4.8×35 mm roofing screw with a hexagonal head or a standard one with a cross-shaped flange. Important feature screws is the presence of a rubber lining that ensures the tightness of the hole.

Screw the self-tapping screw strictly perpendicular to the sheathing into the deflection of the wave. It is necessary to ensure that the cap does not deform the gasket when tightened and is pressed tightly against the surface.

It is important to know that during fastening work there is no need to pre-drill the sheets. A high-speed drill will burn the polymer coating, and the metal under the screw head will rust.

Wave fastener

This is the second type of fixation; it is used to connect adjacent sheets in a row and fasten the orders together.

For fastening, the same purpose screws are used as for installation to the sheathing, but shorter – 4.8×20 mm. When screwed in, such a self-tapping screw reliably tightens two sheets of metal, but does not reach the gratings and does not deform the corrugated sheet.

There is an opinion that it is necessary to screw screws into the wave - the top point of the corrugated sheet, especially if slight slope. This reduces the likelihood of leakage. In addition, in the spring there are many freeze-thaw cycles of water in the gutters. Under such conditions, the rubber linings on the screws will lose their elasticity much faster and simply rot. But the thickness of the rolled product in this case should be from 0.5 mm. These are the profile markings above - C44, HC-35, etc.

For fastening work, you need a screwdriver with an appropriate bit for a specific screw head. You can use a drill, but it must have a speed control so that the screwing is not too intense.

Fastening materials must be purchased in the required quantity, making preliminary calculations by consumption.

How to calculate the required number of screws?

Self-tapping screws will be required to secure the sheets to the sheathing and for fastening at the joints of adjacent elements and rows. Calculations are carried out based on the quantity per 1 sheet. But if large slopes of the slopes are designed, the calculation is carried out in pieces per 1 square meter.

For 1 profiled sheet

In the case of laying 1 sheet along the entire length of the slope, the attachment points will be located along the edges in each deflection of the corrugation and along its length in a checkerboard pattern. And also to connect to the adjacent element, screws are screwed into the wave with a pitch of 500 mm. Depending on the length and width of the sheet, the fastener consumption will be up to 18-20 pieces.

To calculate how many self-tapping screws are needed for 1 sheet, look at how many corrugation deflections there are on a given sheet and multiply by 2. You will get the required number for fixing at the bottom and top of the sheet. To this value we add 6-8 pieces, which will be used to attach the middle part roofing element. Naturally, a reserve of 10-15% is required.

Per 1m²

When calculating the consumption of fastening materials per 1 square meter, it is recommended to proceed from the requirements - 6-8 screws per square 1x1 m. If the slope of the roof slope is designed steep, you need to add a few more pieces to this quantity.

V-shaped fasteners

This type of fastening is used for laying communication lines in buildings with walls and ceilings covered with corrugated sheets. For example, for installation of air ducts of ventilation systems.

The peculiarity of this type of fastening is that it is very easily adjusted to any type of corrugated sheet with various bends of the corrugated surface.

Installation and adjustment is carried out by marking the bending points of the V-shaped bracket, after which they are pinned to the protrusions. Such brackets are installed before laying the sheets on the frame, and installation occurs directly together with the corrugated sheeting.

Installation of the wind strip

Wind strips or soffits are designed to cover the gaps between the corrugated sheet flooring and the surface of the roofing pie. The main task is to protect the space from moisture, wind and birds. There are two types of soffits: cornice and front. Eaves are laid before the roofing is installed, and front ones are laid at the end of the roofing work.

The planks are laid along the edge of the slope with an overlap of 100 mm, with the obligatory treatment of such areas with sealant.
The spacing of the fastening points is 350-400 mm; the same roofing screws with a sealing lining are used as fasteners.
The edge of the waterproofing film must be lifted and placed on top of the plank.
The front strips are brought under the edge of the corrugated sheet and secured by screwing a screw through the flooring to the sheathing.

If the roof has non-standard shape, then you may have to order wind slats according to an individual project.

Compliance with the basic rules for fastening corrugated sheets will ensure the service life of the roof within 40-45 years. And when carrying out preventive repair work and longer.