How to cover a roof with corrugated sheets with your own hands. How to cover a roof with corrugated sheeting

Metal profiled sheet, also known as corrugated sheet, in last years widely used for installation of roofing coverings. The corrugated sheet is strong, reliable, beautiful and durable. Therefore, roofing with corrugated sheets is becoming more and more common for buildings for a wide variety of purposes.

Modern profiled sheet is a complex multi-layer structure, the outer layer of which is usually color coating from synthetic resins or organic polymers. This is what ensures the corrugated sheet’s high resistance to corrosion and other negative impacts. external influences.

Roofing with corrugated sheets - photo of laying corrugated sheets on the roof of a residential building

In addition to such advantages as visual appeal and long service life, the corrugated sheet is lightweight and easy to process. Therefore, corrugated roofing can be installed even on our own, without the involvement of builders.

A roof made of corrugated sheets is installed with your own hands in several stages. If you follow all the rules and advice, you can independently make a reliable roof that will serve you for decades, even if you have no experience in construction. Below we will briefly look at each of the stages.

Construction of a roof from corrugated sheets: choosing a profiled sheet

The roof structure and its angle of inclination are most often chosen by developers for aesthetic reasons. But, without dwelling in detail on the selection of corrugated sheeting for the roof, it must be said that the choice of materials for all the main elements of the roof significantly depends on the choice of corrugated sheeting.

The cross-section of the rafters is selected based on the calculation of the operational load acting on the roof. But the weight of the roofing material. Corrugated sheeting is lightweight, so roofing a house with corrugated sheeting allows you to reduce the weight, and, consequently, the cost of the rafter system.

The pitch of the roof sheathing also depends on the choice of corrugated sheeting. Roofing a roof with a profiled sheet with a high wave or trapezoidal profile allows you to increase the pitch of the sheathing, which also significantly reduces the cost of the roof. The table below shows the sheathing pitch for the most common brands of corrugated sheets.

Lathing pitch for roofing made of various brands profiled sheet and with different slopes

Brand profiled sheet	Slope roofs, hail	Thickness flooring, mm	Step battens	Magnitude overlap sheets in a row
NS-8	more than 15	0,55	Solid	Two waves
NS-10	up to 15	0,55	Solid	Two waves
	more than 15	0,55	300 mm	One wave
NS-20	up to 15	0,55... 0,7	Solid	One wave
	more than 15	0,55... 0,7	500 mm
S-21	up to 15	0,55... 0,7	300 mm	One wave
	more than 15	0,55... 0,7	650 mm
NS-35	up to 15	0,55... 0,7	500 mm	One wave
	more than 15	0,55... 0,7	1000mm
S-44	up to 15	0,55... 0,7	500 mm	One wave
	more than 15	0,55... 0,7	1000 mm
N-60	at least 8	0,7, 0,8, 0,9	3000 mm	One wave
N-75	at least 8	0,7, 0,8, 0,9	4000 mm	One wave

Preparing for installation of a corrugated roof with your own hands

As a rule, the calculation of the rafter system is carried out by special design organizations, so the first stage of truly independent work begins with preparation for installation roofing. As mentioned above, making a corrugated roof with your own hands is quite easy, but in no case should you violate the technology or neglect some layers roofing pie in an attempt to make it cheaper.

The installation of the roof covering begins after the installation of the rafter system is completed. First of all, a layer of waterproofing is laid on top of the rafters. It performs two main functions.

Construction of a roof from corrugated sheets: installation of waterproofing and installation of a ventilation gap between the waterproofing and the sheathing

The main one is the protection of the under-roof space from condensation, which can form on the inner surface of the roof covering made of corrugated sheets. In addition, waterproofing will become a barrier to rain or snow, which can get under the corrugated roofing during strong oblique winds.

When installing a roof made of corrugated sheets, we must not forget about the need for ventilation of the roof covering. Although everything wooden structures roofs must be covered with antiseptic protective compounds, excess humidity under the roof covering can significantly reduce the life of the roof.

The rules for roofing with corrugated sheets provide for the installation along the rafters, on top of the waterproofing layer, of bars, the so-called “counter-lattice”. Usually this wooden beam, section 40x40 or 50x50 mm. This is how a ventilation gap is created between the corrugated roofing and the under-roof waterproofing.

Roof prepared for installation of corrugated roofing

When preparing the rafter system for installation of a corrugated sheet covering, you need to provide in advance all passages through the roof for chimneys and ventilation ducts, as well as for the installation of fire hatches and built-in skylights. Manufacturing a roof from corrugated sheets in compliance with the technology involves strengthening the sheathing in these places by installing additional wooden blocks along the edges of the openings. An additional board must also be installed at the place where snow catchers are attached to the roof.

Delivery and storage of corrugated sheets

If you decide to refuse the services of specialists and construction contractors, you will definitely encounter a rather unexpected problem - the need to organize the delivery, unloading and storage of corrugated sheets.

Please note that the service of unloading construction cargo is usually not included in the delivery cost and must be ordered separately from the seller. Moreover, not all companies provide such a service, since hiring loaders is not a cheap pleasure. You may have to order movers separately - in any case, decide the issue in advance so as not to be faced with the need to do this work yourself.

In addition, roofing a roof with corrugated sheets with your own hands is not the fastest process, especially if the installation of corrugated sheets is complicated by the shape or area of ​​the roof. Therefore, it is necessary not only to deliver the profiled sheet to the site and unload it, but also to ensure the protection of the material until it takes its rightful place through your efforts. Do not leave it unattended out in the open! Even if “the neighbors are great people” or you have “a high and secure fence.” There is a high risk of not finding the profiled sheet the very next day.

As for the technical side of the issue, when transporting a profiled sheet to the construction site, you need to perform several simple rules:

• It is necessary to load the corrugated sheet on a flat, solid base, placing a lining made of wooden blocks on it across the sheets of covering, no less than the width of the corrugated board;
• during transportation, the corrugated sheet should be tightly tied with soft slings or belts to avoid friction between the sheets;
• It is better to drive at a speed of no more than 80 km/h, while avoiding sudden jerks during braking and acceleration.

You need to unload corrugated sheets at the site one sheet at a time, carrying them in a vertical position, without bending. Store the profiled sheet indoors or under a canopy on wooden supports, 150-200 mm high.

Installation of additional elements when making a roof from corrugated sheets with your own hands

Roofing houses with corrugated sheets is not only a covering made of corrugated sheets. Installed at all edges and joints of roof slopes additional elements, which not only protect them from snow, rain and wind, but also give the roof a complete and neat appearance.

Such elements include cornice and wind strips, junction and valley strips, as well as ridge elements. Some of them are installed before the roof is covered with corrugated sheets, and some are installed after the installation of the corrugated sheets. Before installing the corrugated sheeting, the eaves strips and lower valley strips are installed. After the final fastening of the covering sheets, wind strips, upper valley strips and a ridge are installed.

The corrugated sheet on the gable overhang does not need to be protected with a wind strip. But in regions with strong winds, there is a serious risk of tearing off the edge of the corrugated sheet on the gable overhang. Therefore, if any corrugated roofing is installed, the instructions always provide for the need to install a wind strip on the gable.

The ridge covers the top joint of the roof slopes. The roofing and waterproofing in this place should not meet closely. Violating this rule is one of the main mistakes that beginners often make. Because of this mistake, a self-made roof made of corrugated sheets is poorly ventilated, which leads to excessive moisture in the insulation, loss of heat, dampness and mold.

To avoid this, leave a gap of 50-70 mm on each side. This is necessary so that air can freely escape from the under-roof ventilation gap. For the same reason, the roofing profile at the ridge installation site is filled with sealant only to 2/3 of its height.

At the top of each slope, an additional sheathing board is installed specifically for attaching the ridge. The ridge elements are secured to the sheathing with long self-tapping screws through the upper wave of the roofing profile in increments of 30-40 cm.

Having fulfilled these simple requirements, a do-it-yourself roof made of corrugated sheets will be protected from leaks in “narrow” joints. It will reliably protect your home from the vicissitudes of the weather, if, of course, you install the sheets themselves correctly. But more on that below.

Corrugated roof: safety instructions

The manufacture of a roof from corrugated sheets is related to the height and therefore refers to construction work increased danger. To avoid injury, when installing the roof you need to follow a few simple rules:

1. Lift the corrugated sheet onto the roof in two wooden joists, supported by the upper ends on the sheathing of the eaves overhang. For this purpose you can use wooden stairs, turning it steps down.
2. You only need to lift the covering one sheet at a time so that the top one cannot slip and injure the person standing below.
3. Since corrugated sheeting is light and has a large windage, it is strictly forbidden to work with this material in windy weather.
4. You can walk on corrugated sheets only in shoes with soft rubber soles. Firstly, this will protect the polymer coating layer from damage, and secondly, it will prevent you from slipping on smooth surface roofing covering.

If stingrays have rectangular shape, installation begins from one of the lower corners of the roof. First lay two or three bottom sheets, temporarily securing each of them with one screw. Then install one or two sheets of the next row. The laid sheets are aligned along the edges of the eaves and gable overhangs and are finally secured. The coating is laid in such a way that each subsequent sheet in a row overlaps the capillary groove of the previous one.

If the slope has the shape of a trapezoid or a triangle, then doing the roofing with a corrugated sheet with your own hands becomes more difficult. In this case, the corrugated sheeting is mounted on both sides of a line drawn from the edge of the ridge perpendicular to the cornice.

The roofing sheet is fastened with special roofing screws with a press washer and a neoprene rubber sealing gasket. Particular attention should be paid to their correct tightening, since the tightness of the fastening point determines the tightness of the entire roof covering.

In each wave, corrugated sheeting is attached to the eaves overhang and at the junction of the upper and lower rows of covering. Then the screws are screwed in every 30-40 cm in a checkerboard pattern. In total, the consumption of fasteners is approximately 8-10 screws per 1 m² of corrugated sheeting.

Comfortable and cozy living can only be ensured by high-quality roofing material, which will protect the roof from leaks and the entire structure from destruction.

In terms of strength and durability, steel is the leader among roofing materials, but this material is characterized by significant weight. Under the influence of a heavy coating, the rafter system can weaken and become deformed. The method of corrugating steel sheets helped solve the problem. As a result, even sheets large size began to have little weight. At the same time, the strength characteristics and rigidity of the material remained unchanged due to the formation of a trapezoidal profile. This material became known as corrugated sheeting.

Practical to use, as well as minimal harm environment behind a short time made corrugated board a very popular material.

Main characteristics of corrugated sheets

Profiled sheets are obtained by cold rolling of hot-dip galvanized steel. During the manufacturing process, the material is processed protective equipment in several layers, thereby increasing strength and durability finished products. First, anti-corrosion phosphate is applied to the steel sheet, then the surface is primed. After that on front part a polymer mixture is applied, and the lower part of the sheet is coated with a special varnish.

The result of the actions performed is the material High Quality having long term operation. High-quality corrugated sheeting has a large number of advantages, but it also has negative sides.

Among the positive characteristics of this coating are the following:

• Long service life.
• A price that beats most competitors.
• Insignificant mass.
• Easy installation and dismantling in a short period of time.
• Resistant to sudden temperature changes.

The disadvantages of corrugated sheets include poor noise absorption, which to some extent impairs sound insulation.

Material classification

Corrugated sheeting is widely used not only as a roofing material.

Before installing corrugated sheeting on the roof, you should familiarize yourself with its classification:

• N is the best roofing material designed for covering surfaces and ceilings. Can be used as permanent formwork. The strength and reliability of the material is ensured by additional stiffening ribs, special thickness and height of the profile.
• C is a material used mainly for the construction of fences. The cost of such coverage is slightly cheaper, but also quality characteristics inferior in many respects.
• NS is considered a combined material that can be used as a roofing covering, but with extreme caution. Firstly, the roof should not be subjected to significant loads. Secondly, the slope must have a good slope. Only in this case can fatal consequences during operation be avoided.

Determining the angle of the roof

In order to correctly install corrugated sheeting on the roof, it is necessary to determine the angle of inclination of the roof. The amount of overlap on the adjacent sheet depends on its value:

• Laying sheets on a roof with a slope of 12 to 15 degrees is carried out with an overlap of 20 cm.
• When tilted from 15 to 30 degrees, the overlap should be 15-20 cm.
• Increasing the tilt angle to 30 degrees reduces the overlap of sheets to 10-15 cm.

Laying corrugated sheeting on a roof with a slope of less than 12 degrees should be accompanied by additional sealing of the joints using silicone sealant.

Installation of corrugated roofing

Execute high-quality installation When installing corrugated sheets on the roof, instructions from experienced builders help.

Material transportation

It is necessary to transport corrugated sheets on a flat surface to prevent strong bends.

When unloading mechanically soft slings should be used; manual unloading requires the presence of one worker for every 2 meters of length.

Lifting to the roof is carried out using logs.

Preparatory stage

Installation of corrugated sheets on the roof begins only after calculating the material and determining its type. Managers of a company engaged in the production and sale of corrugated sheets can competently perform such actions. In addition, you need to prepare a set of tools for work, consisting of a tape measure, a hammer, a hacksaw for cutting metal, a drill and a cord.

Ventilation and waterproofing

One of the stages in solving the problem of how to properly install corrugated sheeting on a roof is to carry out work on effective vapor barrier, thermal insulation and ventilation. This prevents the accumulation of moisture in the under-roof space, which causes the destruction of many materials.

Waterproofing materials are laid on the sheathing directly under the corrugated sheets. Waterproofing is carried out according to special rules: the material should hang down by about 2 cm, the strips should be overlapped up to 15 cm, and the joints should be sealed with adhesive tape.

Maximum air circulation is achieved by creating ventilation holes between the ridge strip and the roofing material. To create additional channels for air movement, place on top of the waterproofing wooden slats.

Installation of rafters and sheathing

On top of the waterproofing layer, rafter strips or steel purlins are fastened (with a profile height of 4 cm). These elements are covered with a lathing that has a longitudinal direction. The sheathing pitch is selected depending on the type of roofing material.

The sheathing can be made from timber with a section of 5*5 cm, boards 3*1 cm or moisture-resistant plywood 1 cm thick.

The sheathing can be continuous or thinned out. Using the first type will be more effective on the ribs, along the ridge and around the chimney. In other cases, it is allowed to pin elements in increments of 5 cm, and the distance should be the same over the entire area.

Before installing corrugated sheets on the roof, wooden elements must be treated antiseptics and fire retardants.

To prevent the formation of condensation, you can use a diffusion gasket, which is attached with small nails directly to the sheathing.

The installation of lathing is a very important moment on which the strength and reliability of the roof and the entire structure depends.

Formation of eaves overhang

The eaves overhang is formed during the process of laying the bottom row of corrugated sheeting, but must first be installed cornice strip, which is located below the waterproofing. This design directs condensate and wastewater into a gutter and then into drainpipe. Neglecting this rule will result in water getting onto the walls of the house. The consequences of this are known to everyone.

How to install corrugated sheeting - technology

Correct installation of corrugated sheeting on the roof is possible only if certain instructions are followed. Time-tested technology for installing roofing from corrugated sheets will allow you to build a reliable roof.

Sheet cutting

Cutting corrugated sheeting significantly increases the consumption of material and its quality characteristics, so you should buy a coating in accordance with the size of the slope. However, such an ideal situation does not always occur; therefore, it is necessary to know the rules for cutting metal sheets, as well as the tools to perform these actions.

Before installing corrugated sheeting on the roof, you need to measure it on a flat and level surface, for example, laying it on the ground.

They cut material with a variety of tools, but a more efficient and high-quality result is obtained when using an electric drill equipped with a disk attachment. From hand tools Scissors for cutting metal or a hacksaw with fine teeth are suitable.

It is not recommended to use a grinder or other devices with abrasive edges for this purpose. cutting discs. The operation of such tools is accompanied by the release of a large amount of thermal energy, which can cause a decrease in the performance characteristics of the material.

The cut edge must be treated with protective agents, the most in a simple way is ordinary paint, matched to the color of the corrugated sheet.

Transporting sheets to the roof

Some corrugated sheets have enough big sizes, which makes it difficult to lift them to the installation site. In addition, in this situation there is a risk of damage or deformation of the products.

To make transporting sheets to the roof more comfortable, it is necessary to use logs. These devices rest against the ground at one end and against the eaves of the slope at the other. The distance between the lags should not exceed the width of the sheet of roofing material. This device allows two builders to lift dimensional sheets onto the roof.

Fixing sheets on the sheathing

The technology for fastening corrugated sheets on the roof implies the following rules:

• It is best to use hexagonal self-tapping screws, 8 cm long and equipped with a sealing gasket, as fasteners. When tightening screws, do not apply great effort, since as a result of this the gasket may become denser, which negatively affects the waterproofing layer.
• At normal installation The fasteners are placed in the lower wave of the corrugated sheet, but at the ridge or at the junction of the sheets it is better to fasten the material in the upper wave.
• Laying the first sheet begins from the end of the slope, the second and subsequent sheets are laid with a side overlap up to half the wave. If the roof has a gentle slope, then the overlap should be 1.5 waves.
• At joints it is recommended to carry out additional seal. For this purpose you can use bitumen mastic or self-adhesive tape.

Design of the pediment cut

When solving the problem of how to properly install corrugated sheeting on a roof, great importance is given to the installation of wind slats and strips that will protect the roof and corrugated sheeting from moisture and wind. It is these factors that can cause the destruction of the entire structure.

If the corrugated board was laid in the front part with an allowance of up to 5-7 cm, then a wind strip can be used for protection. This element has a size of 2.5 * 8 cm, and its fastening is carried out using self-tapping screws. Laying sheets without allowance on the gable side must additionally be accompanied by the installation of a wind strip. These elements are installed with an overlap of up to 15 cm and secured with self-tapping screws every 20-30 cm.

If the slope has a longitudinal or transverse connection with the wall, then use corner strips. Such parts are also installed with an overlap, which can be more than 10 cm. The fasteners are placed at a distance of 20-30 cm from each other.

Installation of ridge and snow guards

It is recommended to install the ridge part of the roof from the edge on which wind loads have less impact. The profile of the ridge is selected depending on the preferences and taste of the developer: simple, figured or tiled. To fasten the ridge, use self-tapping screws, placing them at a distance of 20-30 cm from each other. In addition, be sure to use a sealing gasket and leave a ventilation gap.

Snow guards are necessary to prevent avalanches of snow from rolling down during heavy snowfall or thaw. metal roofing. At the same time, the installation of snow guards on a roof made of corrugated sheets must be carried out according to certain rules. These elements are installed at the bottom of the slope perpendicular to its direction. For fastening, it is necessary to pre-mount the bars.

Thermal insulation of corrugated sheet roofing

In order for the question of how to properly install corrugated sheeting to have a complete solution, the structure must be insulated. Corrugated sheet metal is used as insulation for roofs. mineral wool and vapor barrier, these materials are considered the most effective.

Thermal insulation material can be taken in rolls or mats, the quality and performance characteristics do not change. The gaps between the rafters are filled with insulation, using screws for fastening. adhesive composition or thick thread. Fixation process thermal insulation material should be monitored to avoid excessive compression. After all, the main function is not performed by cotton wool, but by air located inside the material.

Thermal insulation must be covered with a vapor barrier; it will protect the insulation from the penetration of moisture, which rises upward along with warm air. Getting inside the thermal insulation material, moisture reduces its performance characteristics.

When insulating the roof, you should take care of ventilation. To do this, the triangle at the top of the roof is left without insulation. It is in this place that conditions are created for free air circulation.

In some situations, you can do the following: lay corrugated sheet flooring on the old roof. This helps to increase thermal insulation characteristics roofs, but provided that operational properties old layer meet all the requirements.

Corrugated sheet roofing maintenance

Corrugated sheeting does not require special care, but care must be taken during the installation process so as not to cause harm to the material. In addition, it is necessary to store the profiled sheets in upright position. It is best to make a lining from boards spaced in half-meter increments.

If damage to the protective layer could not be avoided, the damaged area can be covered with paint to match the material.

To protect your home from leaks and collapses, you need to properly install the roofing. In addition, this will ensure comfortable living in the cottage.

Almost all experts recommend using roofing material made from corrugated sheets. This is an environmentally friendly product that is also very durable. If you are in doubt, we advise you to look at photo and video materials on the topic of do-it-yourself corrugated roofing. We're confident that once you learn more about this process, you'll get started right away.

So, you have decided to install the metal profile yourself. The first step is to carefully take the necessary measurements of the roof.

Tip: When taking measurements of the roof, remember that the edge of the profiled sheet must protrude beyond the edge of the eaves by 50 millimeters.

When planning with your own hands, keep in mind that there are a lot of options. All of them are presented in various catalogs. Therefore, you can choose any material to your taste.

Tip: Give preference to those sheets of corrugated sheets that are long enough to cover the entire roof from the ridge to the eaves. In addition, it will be important to add another 50 millimeters of material. This is necessary to connect the roofing sheets to each other.

If the roof requires large sheets corrugated sheets, then divide them into several parts. After this, it will be easier for you to transport the material and lift it onto the roof.

We cover the roof with corrugated sheets with our own hands: technology

Tip: when purchasing material, ask the seller for instructions. Remember that it is very important for product manufacturers that their products are popular. Therefore, if a product is certified, it must have installation instructions. In addition, a high-quality product has greater reliability and warranty.

Performing ventilation. To do this, place wooden slats on the waterproofing layer. Do not neglect this process, because some moisture gets between the roof and the waterproofing.

Installation of corrugated sheets. Before covering the roof with corrugated sheets with your own hands, study all the instructions.

Installation of corrugated sheets and its diagram

At the level of the sheathing, place wood flooring on both sides of the valley at a distance of 60 centimeters. The overlap for the bottom valley boards should be at least 200 millimeters. Attach the bottom strip to the edges using several nails. Then all you have to do is secure it together with the entire roof.

Tip: For a flat roof slope, use sealing mastic.

When installing the bottom (bottom) valley strip, bend its upper ridge over the roof or make a flange.

Attention: the bar must fit under the ridge at least 250 millimeters. It is recommended to install an additional universal seal between the profile and the bottom valley strip.

The end top board should be installed higher than the sheathing. Next, the end strip is attached to the board. As a result of all the above actions, you will get a windy corner.

We install the end overhang assembly on the roof

Important: The location of the eaves strip must be below the waterproofing carpet. This is necessary so that condensation can roll down the waterproofing, fall on the eaves strip and flow to the ground.

A do-it-yourself metal profile roof must have a cornice strip under the corrugated sheeting. It is important to provide ventilation. This is necessary to eliminate water vapor. Be sure to install a seal that should not let air through.

Option for installing a cornice overhang

Cover the drainage channel on the corrugated sheet with the subsequent sheet. There is no difference in the installation: from left to right or from right to left - as is convenient for you. The only thing that needs to be noted is the overlay of the sheet under the previous one. But you can also slip one profile under another.

The design of a roof made of corrugated sheets involves the process of laying sheets from a profile. If you are working with gable roof– then start installation from the end of the roof. When installing a roof with a hip, laying the corrugated sheeting begins from the center of the hip.

Important: To align the sheets, it is best to use a cord that must be pulled along the cornice. Alignment should not be carried out at the end of the slope.

Considering the thickness of the corrugated board, secure the middle part in a checkerboard pattern. In other words, you need to tighten 5 screws per square meter.

Multi-row laying of corrugated sheets and its methods:

1. Vertical installation. The first sheet is laid on the bottom row and temporarily secured. The first sheet in the second row is laid in the same way. Next, the second sheet is laid on the first row and the second sheet on the second row. Thus, a whole block is obtained. After this, you need to create and attach a subsequent block. This method is ideal for roofs with gutters.
2. The second option is that the block includes 3 sheets. Place two sheets on the first row and secure them together. Then attach one sheet from the second row to them. The final fixing of the block will occur after alignment with the cornice. Next, a similar block of 3 sheets is attached. This method is suitable for sheets without a gutter.

Never forget that profile sheets are very light. They should not be subjected to high loads or walked on during installation work.

Installation of end and ridge strips

Length end strip should be about 2 meters. When building up 50–100 millimeters, overlap the planks on each other. According to experts, it is best to lay the end strips from the side of the roof overhang, gradually directing them towards the ridge.

Mounting the ridge assembly

Overlapping when laying ridge strips must be more than 100 millimeters. Use self-tapping screws for fastening. In this case, the step length should reach up to 300 millimeters.

Which corrugated sheeting is better for the roof?

There are some nuances that require close attention, and neglecting these features can negatively affect the quality and functionality of the roof. Focus should be on the right choice roofing corrugated sheeting and compliance with installation techniques. Depending on the area of ​​use, profile sheets for roofing, wall and load-bearing purposes vary. For roofing, only the roofing type of corrugated sheeting can be used, which can be of several types.

Types of roofing corrugated sheets

The roofing type of corrugated sheet most often has a coating of a special protective layer, represented by polymer materials– polyester, plastoisol or pural. Before purchasing roofing sheets, you should pay attention to the markings, which consist of letters and numbers.

The first letter in the marking reflects the purpose of the profiled sheet:

• the letter C marks wall sheets used for the manufacture of fences;
• the letter H marks high-quality roofing material;
• marked with the letter NS universal look corrugated sheeting, the use of which is possible in the construction of roofing and wall fences.

The letter designation is followed by a number that characterizes the wave height of the roofing sheet and is expressed in millimeters. The next number is the thickness of the metal sheet used in the production of corrugated sheets. The last two digits of the marking are the width and length parameters in millimeters.

High-quality roofing material must meet certain standards and for roofing it is allowed to use profiled sheets of the brands MP-18(A), MP-20(R), (A), NS-35(A), MP-35(B), S-44 (A), N-60(A).

Roof structure

Profiled sheets can be used for cold or insulated roofing. An insulated roof under corrugated sheeting requires special attention when performing the following steps:

Roofing pie structure

• layer of sheathing;

• ridge seal and ridge;

• laying waterproofing film;

• installation of a rafter strip or timber counter-lattice;

• installation rafter legs;

• laying a layer of insulation;

• installation of vapor barrier film;

• ceiling rail device;

• installation of a layer of drywall or lining;

• arrangement of under-roof ventilation and ventilation between the insulation layer and the waterproofing film.

Installation technology

Installation of corrugated roofing can be done on a wooden frame or a frame made of steel purlins. Construction experts recommend using corrugated sheeting for buildings with a slope length of more than twelve meters. The application of several corrugated sheets along the roof slope should be done with a horizontal overlap and correspond to the roof slope.

Instructions for laying corrugated sheets

Fastening corrugated sheets on the roof

Vertical installation of corrugated sheets can begin from any corner of the roof, but to avoid roof leaks, you need to cover the previous sheet with the next one by one wave. For high-quality ventilation, a gap of three centimeters must be left between the top roofing sheets and the thermal insulation layer. The material is invariably laid in a direction perpendicular to the horizontal cornice while maintaining an overhang of four centimeters.

Horizontal installation of corrugated sheets is justified if the length roofing structure longer purchased roofing material. Horizontal laying begins from any corner of the bottom row in the upward direction. The rule of overlapping the previous profiled sheet with the next one remains the same. The overlap of the joints should be twenty centimeters, and the remaining space is filled with silicone sealant.

The horizontal overlap should be:

• roof slope< 14˚ – двадцать сантиметров и больше;
• roof slope 15-30˚ - from fifteen to twenty centimeters;
• roof slope > 30˚ – from ten to fifteen centimeters.

If the roof slope< 12˚, то для герметизации горизонтального и вертикального нахлеста следует использовать тиоколовый или силиконовый герметики.

Roof elements

When using profiled flooring, it is necessary to install the following roofing elements:

• The end strip, used for finishing the edges of corrugated sheets, is mounted before laying the corrugated sheets. Fastening by size or overlap is allowed. The first wave of the sheet is closed by an end strip by at least five centimeters. Side mount performed using roofing screws, and ridge fasteners are used for fastening from above;

• cornice strip protecting the facade of the building from precipitation. It is mounted with an overlap of ten centimeters. The attachment point is the last board of the sheathing. For fastening you should use roofing screws to match the color of the profiled sheet in increments of thirty centimeters;

• gutter strip, giving a finished and aesthetic appearance to the ridge element in front of which it is mounted. Using a strip and screws, the end parts of the corrugated sheets located under the ridge are secured;

• flashings in the form of external and internal corners, as well as abutment strips. They are attached after the installation of roofing sheets is completed. In addition to the decorative function, they help protect joints from moisture and dust. The place of installation of the abutment strips is the joints of the roof with walls and pipes;

• valleys connecting roof slopes with different slopes and promoting waterproofing. Installed before laying roofing sheets;

• snow guards mounted at a distance of thirty centimeters from the eaves edge. At length roof slope more than eight meters requires the installation of additional snow retention strips;

• ridge connecting the top sheets of the pitched junction. Acts as protection for the upper line of the roof fracture. The mounting location is the top points of the corrugated sheet waves. It is necessary to install a sealing tape between the roofing sheets and the ridge, as well as filling the seams with sealant.

Correct fastening of sheets and components

Self-tapping zinc coated screws must be used to hold the roofing sheets together and to the sheathing. In addition, sealing washers made of neoprene rubber are used. Fastening the corrugated sheeting to the sheathing through the lower part of the corrugation is carried out with self-tapping screws 4.8-28 or more.

The ridge is fastened through top part corrugations with a self-tapping screw, the length of which is commensurate with the height of the profile.

The wind strip is attached using self-tapping screws in increments of 20-30 centimeters and an overlap of 10-15 centimeters.

The overlap for the ridge elements is 10-20 centimeters, and for fastening they are used through the upper part of the corrugation in increments of 20-30 centimeters. The length of the fasteners depends on the height of the corrugated sheets.

Cost of work

The average price for the installation of a pitched roof using sheets of corrugated sheets, excluding the cost of the material:

• installation of roofing covering on ready-made sheathing - from 700 rubles per m²;

• installation of roofing with installation of sheathing on a finished rafter system - from 950 rubles per m²;

• installation of a pitched roof with cold attic space, including the rafter system, sheathing and corrugated sheet covering - from 1,500 rubles per m2.

For more information on how to install it yourself, watch the video.

Let's sum it up

Modern roofing corrugated sheets are becoming very popular. This material is especially in demand in the private sector and low-rise construction. The availability of an affordable price and performance qualities equivalent to metal tile coatings has made corrugated sheeting a very attractive material for roofing, which correct installation will serve faithfully for many years.

Profiled a metal sheet is a very common roofing material in industrial construction, but recently private developers have also fallen in love with this coating. Properly installed corrugated roofing has very good performance characteristics. The use of certain metals makes it possible not to worry about its maintenance and repair at all, because it can last up to 150 years. In this article you will learn how to lay a corrugated roof, its types, properties and characteristics.

Marking of corrugated sheets

Profiled metal sheet is a unique building material. Thanks to it, you can create bases for other types of coatings, use it as a material for permanent formwork, or build a fence with it.

During the production process, the surface of the corrugated sheet is covered with various polymers, which protect the metal from corrosion and give the material different shades, but there are more simple types, which do not have such protective layers.

The marking of profiled sheets does not have complex symbols.

• WITH– means that such material can only be used as components of sandwich panels, when covering walls or constructing a fence
• Letter " N" means - carrier. This sheet is used when installing permanent formwork or as a roofing covering.
• The combination of both letters " NS"assumes that such a product is universal and suitable for all possible jobs

In addition to letters, the marking also contains a digital designation. They show the parameters of the sheet, for example, C-50-0.6-845-6000, where 50 mm is the height of the corrugation, steel thickness is 0.6 mm, width and length are 845 mm and 6000 mm, respectively.

It is necessary to lay corrugated sheeting on the roof only with an overlap, therefore, the width of the laid material will be slightly smaller. This nuance will be useful to you when making calculations.

If you do not know the markings of the corrugated sheet, you can measure the height of the corrugation. If the obtained value is in the range from 2 to 16 cm, this is a load-bearing type, but if from 0.8 to 13.5 cm, then such metal can be used as walls for fencing.

Advantages of corrugated sheeting compared to other roofing coverings

Modern construction offers a very large number of roofing materials to choose from and it is often very difficult to decide, so I wrote a short list of the advantages of corrugated sheeting over other roofing coverings.

• High strength and resistance to external influences. These properties allow the material to easily cope with emerging loads from wind, rain and snow. Ultraviolet radiation and a small mechanical impact does not affect the service life in any way
• The weight of the coating is quite small, only 10 kg/m2. Thanks to this quality, there is no need to build a complex rafter system, for example, as when laying natural tiles
• A wide range of. Manufacturers of this building material can offer you different types and coloring, but what is more important is the metal used. After all, when using different raw materials, the service life will differ significantly from each other.
• Durability. The minimum service life of a metal roof is 50 years. Of course, if all installation rules are followed
• Easy to install. The corrugated sheet is quite large in size, therefore, filling the roofing area with it will take very little time
• Cheapness. Here the profiled sheet is compared with metal tiles, which have almost identical properties, the only difference is in aesthetics

How to choose the right material

When laying a corrugated roof with your own hands, it is necessary to make some calculations and determining a good material for covering the roof is one of the most important tasks of the developer. For correct selection you will need to know the following parameters:

• The corrugated sheet must be marked N or NS
• Thickness sheet material must be at least 0.5 mm
• As a rule, corrugation is taken from the range of 20-75 mm
• For ease of moisture removal, the material must have a capillary groove
• If aesthetic appearance is important to you, then take a product coated with polymers, but if you are looking for a coating for a temporary structure, then it is better to use the simplest corrugated sheeting. This will save you a lot of money
• When purchasing a roofing covering, carefully inspect it for scratches and chips.

Calculation of material requirements

No construction work can begin without preliminary calculations. At this stage, it is important to determine the future costs of material, time and effort.

If your home has a gable roof, then consider yourself lucky. This type of roofing is very convenient for calculations, but if you have a more complex rafter system, for example, hip or gable, then you will have to rack your brains a little.

But I can please you, today manufacturers of roofing materials allow you to calculate the need for materials on their computers; it is enough for them to know the required dimensions. This method allows you to determine as accurately as possible how much material will go to a particular plane.

If you count everything by hand and you count complex type roofs, then for simplicity and accuracy, highlight the main figures on the plan, and then find their area. After this, all the results obtained are summed up and a value is obtained, which is divided by the parameters of the sheet material. This is how the quantity is found. By the way, when making such calculations, do not forget about the overlap, because it “eats up” some of the width of the sheet and you may not have enough material.

In addition to the roofing covering, at this stage they calculate drainage system, snow holders, pipes and all other small parts.

Tools for installation work of corrugated sheets

For convenience, I have written a small list of basic tools that may be useful during the installation process.

1. I consider the most important tool to be an electric hacksaw for metal. Such a tool will allow you to easily divide the profiled sheet into the required dimensions. Using this tool, you will get the most even cut possible.
2. Metal scissors. Of course, an electric hacksaw is a good thing, but sometimes it becomes necessary to cut places where this device simply cannot reach
3. Tape measure and marker
4. Screwdriver. This tool will only be useful to you if you use self-tapping screws as fasteners.
5. Fasteners. Various products can be used here, but, as a rule, self-tapping screws are used, which have polymer seals and washers
6. Well, where can you do without a hammer, a standard hacksaw with fine teeth and a screwdriver?

The rafter system is a complex structural part of the roof, therefore, when working on it, extreme concentration and safety precautions should be observed.. The worker's clothing should not restrict movement, and shoes should have non-slip soles. The mounting belt must be in functional condition, and the safety rope must be secured to a reliable structure.

What does an insulated roof made of corrugated sheets look like?

A cross-section of an insulated corrugated roof looks like this:

• Roofing covering (profiled sheets)
• Discharged sheathing
• Counter lathing
• Waterproofing
• Insulation boards
• Internal lathing
• Vapor barrier membrane layer
• Drywall

Once you have learned the sequence of layers in an insulated roof using profiled metal sheets, let me tell you how they are attached and what parameters they should have.

The corrugated sheets themselves are attached to the sheathing using screws or self-tapping screws with a rubber lining. The actual screwing of these fasteners should be done only into the bottom wave of the material, and the fastening of the sheets to each other is carried out at the top, and the screw should not reach the sheathing.

The lathing is made of wood and must be pre-treated with antiseptics, as are all wooden structures. The material for construction is boards 32x100 mm or timber with a section of 40x40 mm, and 32x50 mm as a counter-batten.

The essence of the counter-batten is to press the vapor barrier membrane, which is waterproofing. When arranging such wooden system care must be taken to create channels through which air can move freely - this is called ventilation. Without it, moisture condensation will appear, and your rafter system will quickly fail.

The insulation boards are laid in several layers between the rafters; if the dimensions do not match, then cut off the required piece.

By the way, in order for the thermal insulation not to fall out, you need to set slightly larger dimensions so that when you push this material in, it will not slide or fall to the floor.

The internal sheathing is created in order to hold thermal insulation boards and create a foundation for installing a vapor barrier membrane and drywall.

Do-it-yourself roof installation from corrugated sheets

Very often I hear questions from developers about “how to make a roof from corrugated sheets?” and so I decided to answer it using the site.

Knowledgeable roofing crews know all the installation methods of this material, but if you are going to install corrugated sheeting on the roof with your own hands, then this item is just for you.

The installation process can be carried out in only three ways.

1. In one row
2. Several rows
3. For triangular or trapezoidal slopes

In the first case, sheet material begins to be laid from the bottom of the left slope. The first elements are installed taking into account the eaves overhang, i.e. going beyond the roof plane. The side sheets are temporarily attached to the base with one self-tapping screw, which is placed on top. Next, the laying of material moves upward, and upon reaching the ridge, the process begins again, moving to the right. After laying the second strip, the first is calibrated and firmly screwed with fasteners.

I learned about how to correctly lay corrugated sheeting on a roof with my own hands in several rows at work with my colleague on the first day of work. To do this, we laid profiled sheets from one edge to the other, moving horizontally. This method is suitable for those whose roofing material does not fit the parameters, or it has to be cut frequently. The horizontal overlap should be in the range of 150-300 mm, and if the roof has a slight slope of up to 15 degrees, then all joints are treated with silicone or other sealant.

Often on complex roof there are triangular or trapezoidal areas. Installation in such places occurs from the center and then goes in both directions at the same time.

A do-it-yourself corrugated roof will have several dozen sections where the sheet material was cut. Therefore, in order to protect the metal from corrosion, it is worth treating them with a special primer. When dividing the material into parts, it is allowed to use only an electric hacksaw or scissors; the use of other tools, for example, a grinder, will damage the coating much more.

For fastening, special screws or self-tapping screws with washers are used. They have rubber linings, resulting in maximum sealing of the joints. The consumption of self-tapping screws is purely individual, but, as a rule, it is 8-10 pieces. To add greater aesthetics, paint the fastener caps in the desired color.

Since metal roofing does not in any way suppress the noise of falling drops during rain, developers very often use polyurethane foam seals. They are laid along the perimeter of the overhangs, covering the corrugated space.

I hope after reading it, it became clear to you how to lay corrugated sheeting on the roof with your own hands and now you can go deeper. Now I will tell you how connecting places are arranged.

Installation of cornices, ridge and valleys

After laying the roofing material on the roof plane, the installation work does not end. Next, you should start arranging the cornices, valleys and ridges. I'm looking at these places because they are the most important. It is with them that it is connected common problem roof leaks.

To achieve maximum safety from moisture ingress, additional sheathing should be installed in places where the planes are fractured, and additional elements that were purchased along with profiled sheets, for example, abutment strips and valley gutters, should be installed on them.

The ridge part of the roof must have a ventilation gap. It will allow the air mass to move freely in attic space and remove condensation. To do this, the curved strips of the ridge assembly are screwed with self-tapping screws through the corrugated sheeting. The gap between them should be approximately 5 cm. The ridge itself should cover the profiled sheets on both sides by at least 10 cm.

I hope now that people who ask the question “how to lay corrugated sheeting on a roof?” will become smaller, because in this article you have learned almost everything you need and are able to do the installation yourself.

If you have any difficulties, watch a video on how to lay corrugated sheets on a roof, or contact a professional.