One of the most inexpensive, durable, practical options roofing material - or, as they also say profiled sheet, metal profile. This is a sheet of metal that is coated with several protective layers and then passed through molding machine, which presses protrusions and grooves into it to give greater rigidity. The material turns out to be quite light; a roof made of corrugated sheets can be installed independently and even “with one hand.” The technology is not the most complicated, it is quite possible to do it yourself.
There are different types of corrugated sheets. There is a regular profiled sheet - galvanized, and there is a colored one - with a layer of polymer applied over the zinc coating. The polymer coating has a dual role - it protects against external influences, and gives the material a more decorative appearance. Simple galvanized corrugated sheeting is used as a roofing material mainly on temporary buildings, while colored sheeting has a quite solid appearance and can be seen on the roofs of residential buildings and courtyard buildings.
Corrugated sheets are made from sheet metal different thickness. The thinnest ones are intended for decorating walls, but can be laid on the roof with frequent lathing and light snow loads. The sheets of this group are marked with the letter “C”.
The thickest metal is used to make material with increased bearing capacity. It is marked with the letter “N” and is used as a roofing material in areas with high wind or snow loads. There is also a universal profiled sheet - it is designated “NS”. Can be used both for walls and for roofing (the amount of snow should be average).
After the letter coding of the profiled sheet there are numbers: C8, H35, NS20. They indicate the height of the wave in millimeters that is formed in this material. In the example, these are 8 mm, 35 mm, 20 mm, respectively. Corrugated sheeting with a wave height of at least 20 mm is laid on the roof.
The wave shape of the supporting metal profile is often more complex - additional grooves are added to it to increase rigidity.
Despite all the external similarities, the price of corrugated sheeting of the same type can differ significantly. The point, most often, is not the arrogance of the manufacturer or seller, but the different technologies and materials used in production. For example, protective covering Can be zinc or aluminum-zinc. The second type of protection has appeared recently; the equipment is expensive, but the durability of metal coated with aluminum-zinc is much higher.
The durability of the coating is also affected by the method of wave formation. There are two technologies - cold rolling and emulsion. During cold rolling, the sheet is simply pressed through rollers without any preparation. To avoid damaging the previously applied coating, expensive equipment is required. Accordingly, cold rolled corrugated sheets are more expensive.
When forming a wave with an emulsion, the metal surface is moistened with a liquid (oil, water, special liquid) and then sent under rolls. If, after rolling, such a sheet is not dried, but sent to a kiln to fix the paint, then the places that were wet will quickly begin to rust. It is impossible to see this defect in advance; you have to hope that the technology is not broken. But profiled sheets made using this technology are cheaper.
There are also different polymer coatings. They create films of different thicknesses and densities, with different properties.
Under normal conditions, the roof is made of corrugated sheets coated with polyester. In terms of price-quality ratio, it is optimal.
The corrugated roofing is laid on a finished sheathing of boards, in which the fragments are located parallel to the roof overhang. The sheathing installation step is up to 60 cm. They usually use an inch edged board, 25 mm thick. The sheets are laid one after another with vertical overlap in one wave. When laying corrugated sheets on the roof, please note that the outermost shelves have different lengths. The one that is a little shorter should be on the bottom, the one that is a little longer should cover the short one. In this case, they adjoin one another tightly, without a gap. If you mix it up and do the opposite, a gap of several millimeters will form between the two shelves, into which water will flow. Therefore, be careful when installing.
About the amount of horizontal overlap. If there are more than one rows of corrugated sheets on the roof, the sheets are laid with overlap. The amount by which the top sheet overlaps the bottom sheet depends on the angle of the roof slope: the flatter the roof, the more approach is needed.
Most factories that produce corrugated sheets can offer you to make sheets that will cover your entire roof - from ridge to eaves - in one long sheet ( maximum length 12 meters). This creates certain difficulties during installation - such sheets are difficult to lift and lay. It will especially take a long time to expose the first sheet - it must be placed strictly vertically, which is a difficult task at altitude. But the main advantage of this solution is a continuous coating from top to bottom, which significantly increases the degree of protection of the attic space from moisture penetration, negating all the inconveniences. After all, there are no horizontal joints, which means there are no problems with wicking either.
To fasten the corrugated sheets, use special self-tapping screws with rubber gaskets under the caps. They ensure the tightness of the connection. Such self-tapping screws are usually painted the same tone as the roofing material. Number of fasteners per square meter- 5-7 pieces (do not forget to add about 20% for fastening the ridge element, securing joints and other similar work).
Install self-tapping screws into the bottom flange, where the sheet comes into contact with the sheathing. Their length is 20-25 mm, depending on the thickness of the sheathing board, since it is important that the sharp end of the screw does not protrude from the back of the board. There will be a waterproofing film there that may be damaged.
When connecting two adjacent sheets, they are also fastened with self-tapping screws. But in this case, you have to screw the fasteners into the wave and also pierce the double layer of metal. For these purposes, the fasteners are longer - 40 mm or more (depending on the height of the wave) - the screw must go into the sheathing board.
It is very rare that corrugated sheeting is installed on a roof without trimming - these are simply unique cases. How to cut profiled sheets? Metal scissors or jigsaw. Yes, it’s slow and not entirely convenient, but that’s what the manufacturers advise. You cannot use an angle grinder (grinder) - when cutting with it, the sheet heats up to very high temperatures at the cut site, which leads to the evaporation of zinc. As a result, in this place, the material quickly begins to rust.
After collection rafter system They nail the front board, hooks are attached to it for installation, and on top there is a special strip - a drip edge, onto which the edge is then placed waterproofing film. Both the dropper and the film are attached to it with self-tapping screws with a sealing rubber washer.
The composition of the pie of materials for corrugated sheets depends on whether you are going to attic space make it cold or warm. If the attic is cold, the sequence of actions is as follows:
If you insulate the roof, the order of work and the amount of materials required will change. There will be more layers:
Even when installing a conventional gable roof, there are several difficult sections that usually form at the junction of different planes and/or parts of the system. These areas are usually called “nodes”. We examined one such unit in the previous paragraph - the design of the front board and the fastening of gutters. But this is far from the only node where detailed explanation is required.
The under-roof space under the corrugated sheeting should be well ventilated. This material heats up quickly and cools down just as quickly, which promotes the formation of condensation. Therefore, when installing a metal profile on the roof, in the upper part the sheets on both sides are not joined tightly, but leave a gap of several centimeters - so that the air can freely escape, taking with it water vapor.
If there are special skates with ventilation (in the photo), but even if you just install a regular ridge element between the profiled sheet and its edge, it turns out a large number of holes - in each depression of the corrugation. The size of this gap depends on the height of the wave - the higher the wave, the larger the gaps are. On the overhang, where the front board is nailed, there are also similar holes. Air movement usually goes from bottom to top - from the overhang, through the under-roof space (for this purpose, when installing the roofing material, it is necessary to leave ventilation gaps, which are formed by the sheathing), to the cracks in the ridge. This is how ventilation and moisture regulation of the insulation occurs, condensation evaporates and is carried away.
Large gaps are good for ventilation, but when it rains/snows with the wind, precipitation clogs them, and dust and leaves get into the attic through them. It is much worse if the holes become clogged with leaves - ventilation will immediately deteriorate. To avoid getting caught similar situation, previously approximately 2/3 of the gap height was filled with sealant, applying it in layers to the roofing material. Crawling back and forth with sealant on the top of the roof, waiting for the previous layer to polymerize a little, is not very convenient. This solution is also incorrect from the point of view of ventilation - the gap decreases and air movement worsens. But there was no other solution. Now it is there - a sealant for corrugated sheets. It is made from foamed polyurethane, polyethylene or wood composite. The structure of these materials is porous and allows air to pass through well, but not dust, water or leaves. In shape it either repeats the shape of the corrugation - there is a different types profiled sheet, and there is also a universal tape that is simply pressed in the right places.
The seal “sits” on the sealant, double-sided tape, glue, there are options with self-adhesive tape. With this compaction, air passes freely, and precipitation remains in the outer layers, from where it later evaporates.
In order to cover the overhang with corrugated sheets, a special profile is attached to the front board. A profiled sheet cut into strips of the required width is inserted into its groove. The second edge of the hem is attached to a board nailed to the ends of the rafters. The joint between the filing and the board is closed with two droppers - one is nailed from below, covering the lower half of the board, and the second - from above. The edge of the waterproofing film is then placed on it.
If a drainage system is to be attached, then the hooks for the gutters are nailed after installing the lower drip line. The top dropper is nailed after installing all the hooks.
In some cases, a roof made of metal profiles is adjacent to the wall of a structure. How to make a connection so that there are no leaks? There are two options (see picture). Both use a corner strip, only it has a different size and a different profile.
You can take corner strip with shelf dimensions 150*200 mm. A shorter side is placed on the wall, a longer side is placed on the roof. They are attached to the wall using fasteners depending on the material from which it is made (nails or self-tapping screws if it is wood, dowels if it is brick and building blocks). The joint between the planks and the wall is silicone sealant. From the roof side, the plank is attached to the crest of the wave, installing special self-tapping screws with rubber washers. Their length is determined in the same way as when connecting adjacent sheets of corrugated sheets (wave height + 20 mm for entering the sheathing board).
The second option is more labor-intensive: a groove (groove) is made in the wall, into which a corner strip with shelves bent at 45° is inserted. The fastening in this case is similar, the difference is in the size of the bar - it can be 100*100 mm or so.
Many questions arise when sealing the passage of a chimney pipe or ventilation through a corrugated roof. The cross-section of pipes is round and rectangular; each type has its own solution.
To pass round pipes There are special steel or polymer aprons through the roofing material. Their upper part is made in the form of a cone, the lower part - the skirt - is made of elastic material that can take a given shape. The apron is placed tightly on the pipe and lowered so that the “skirt” rests on the roofing material. Next, you need to give the elastic skirt a corrugated shape. Use a hammer for this (regular or rubber - depends on the type of apron). To prevent water from flowing under the skirt, coat the joint with sealant and press it well.
After securing the skirt, fix the neckline. If the apron is metal, cover the top with a clamp, tighten it, and coat the joint with sealant. When using a polymer apron (master flush), it is put on the pipe with considerable effort (sometimes you even need to lubricate the pipe with soapy water), but the joint, nevertheless, is sealed with sealant for reliability.
With a rectangular (brick) pipe, everything is somewhat more complicated. Elements are cut out of metal sheets to cover the joint with the roofing pie.
It's called corrugated sheeting universal material, manufactured on the basis of galvanized metal sheet, widely used in modern construction practice. Elegant and attractive forms of roofing coverings made from profiled sheets of bright colors are quite often found these days in private houses. They are often performed as a combination of geometric shapes various configurations, giving roofing coverings a special chic and originality.
Roofing sheeting with capillary groove
Before covering the roof with corrugated sheets with your own hands, we advise you to familiarize yourself with the advantages of this material, and also take into account some of the features of working with it.
Advantages of using corrugated sheets
Corrugated sheet
The main advantage of corrugated sheeting is the possibility of self-installation, carried out without the involvement of third-party workers. In this case, you can get by with just a few people invited as assistants.
First of all, you should know that the profiled workpiece is made from cold-rolled metal sheet with a combined protective coating. A sheet blank formed in this way has the following advantages:
Installation features
Installation of corrugated sheets on the roof
Anyone wishing to familiarize themselves with how to properly prepare a roof covering from corrugated sheets, first of all, needs to take into account some of the features of the operations carried out. These features primarily include:
Lathing for corrugated sheets
In addition, before starting work, it is necessary to determine in advance the main characteristics of the mounted rafter system (rafter pitch, roof overhang angle, etc.), which, in turn, depend on the configuration of the covering itself.
In the most general case (when installing roofs of complex configurations), it is necessary to ensure that following conditions:
Before the final fixation of the blanks laid in a row, all of them must be aligned along the lower edge of the slope.
Installation in the area of the valley, ridge and pipes
Installation of corrugated sheeting in the ridge area
When installing corrugated sheeting, you will definitely be faced with the need to finish such inconvenient places for installation as valleys, chimney pipes, ridges and other junctions. To finish them, it is necessary to use special elements included in the profiled sheet covering kit.
The installation procedure for adjacent elements is as follows:
Fastening elements and seals
Roofing screws
Self-expanding roof seal To secure blanks made of profiled sheets, it is recommended to use special galvanized self-tapping screws equipped with sealing gaskets made of elastic material. The caps of the fastening elements must be protected with a special compound, matched to the color of the coating and providing them with the necessary resistance to corrosion, mechanical and ultraviolet exposure.
Often in practice, when installing corrugated sheets, special gaskets are used to ensure a tight fit of the coating material to the base strips. The use of sealing elements allows you to protect under-roof structural elements from exposure to climatic precipitation in the form of rain, snow, wet drizzle, etc.
Such protection not only increases the service life of the elements of the rafter system, but also helps to improve the sound insulation characteristics of the entire coating as a whole.
Seals on roof ridges made of corrugated sheets
Currently, manufacturers of building materials produce sealing elements that replicate the structure of the corrugated surface of corrugated sheets. In addition, special seals are available for sale that ensure a reliable fit of the ridge elements of the roof.
You can watch a video on working with the roofing material of the class we are considering at the end of the article.
Video about installing corrugated sheets with your own hands. During the viewing process, the author will share some professional secrets that few people talk about:
Installation of corrugated roofing
an old house covered with corrugated sheets
Red corrugated sheet
Corrugated roofing
Gable roof from corrugated sheets
Roof made of galvanized corrugated sheets
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Corrugated sheeting can hardly be called an elegant or presentable coating; in these parameters it is significantly inferior to other roofing materials. However, bathhouse owners often prefer corrugated sheeting as an inexpensive and durable coating. Plus, you can choose a coating with a shade that best suits your general style the buildings.
Corrugated sheets are corrugated steel sheets. The corrugation profile is trapezoidal, providing the material with the necessary rigidity.
When choosing a roofing sheet, consider the height of the wave. The bigger it is, the higher mechanical strength roofing material. But there is also back side medals: the higher the wave height, the higher the risk of moisture seepage in the holes for hardware due to increased water pressure.
You should not choose corrugated sheeting with a wave height of less than 20 mm for the roof of a bathhouse. This material cannot withstand snow loads and is deformed if it is moved directly over the roofing during the roof repair process.
roofing sheeting
Which corrugated sheet to choose for a bath?
| Profile | terms of Use | Sheet thickness, mm | Weight, kg / 1 m2 | Overall / working width (that is, taking into account the longitudinal overlap), mm |
|---|---|---|---|---|
| Pitched roofs. Has a groove to drain water and increase strength. Installation in areas with high wind loads is acceptable. | 0,5 – 0,9 | 5 - 12 | 930 / 860 | |
| Flat and pitched roofs, floors and load-bearing structures. Withstands very heavy loads. | 0,7 - 1 | 9,25 – 12,9 | 820 / 760 | |
| Load-bearing corrugated sheeting, characterized by maximum strength and rigidity. A pitched roof made of N-107 corrugated sheet will last for many decades. | 0,7 – 1,2 | 10,2 – 14,5 | 830 / 750 | |
| Inversion roofs. Relevant if a sports ground, decorative garden, gazebo, etc. are planned on the roof of the bathhouse. | 0,7 – 1,25 | 8,65 – 14,85 | 973 / 930 | |
| The corrugated sheet is for walls, but can be used when arranging pitched roofs. | 0,5 – 0,7 | 3,87 – 5,57 | 1187 / 1150 |
The data from the table is used to determine the required number of roofing sheets. To calculate you need:
*Calculation for rectangular slopes.
It is recommended to give preference to corrugated sheets with a length no less than the width of the roof slope. Then, when installing the roof, there will be fewer transverse joints, and the waterproof properties of the roofing will be improved.
Note! The durability of a bathhouse roof directly depends not only on the quality of the corrugated sheets themselves and additional elements for them, but also on the correct installation of the entire system.
To build a pitched roof for a bathhouse you may need:
On a note! It is worth purchasing repair paint along with the roofing material. It is useful for touching up minor scratches and abrasions.
repair paint
Profiled sheets are transported in vehicles that have the ability to top load the material. In this case, the dimensions of the trailer or body must be at least 20 cm larger than the dimensions of the roofing material. Packages with sheets are secured along their entire length and transported at a speed not exceeding 80 km/h.
When accepting the material, it is necessary to check the actual number of packages and make sure there is no damage or defects.
Unloading of corrugated sheets is carried out using lifting equipment with soft slings or traverses if the length of the sheets is more than 5000 mm. If you plan to unload sheets manually, then at least two workers should do this. When transferring sheets, it is important not to allow them to bend significantly and keep the material vertical.
Important! Don't forget to use work gloves.
After unloading, the sheets are laid horizontally. It is not recommended to store directly on the ground; it is advisable that there be a gap of 50-100 mm between the metal and the ground surface (you can use 50x150 mm boards, laid out in 50 cm increments).
Profiled sheet with protective film can be stored for no more than one month, and with original packaging no more than six months, provided that the material is protected from sun rays, no heavy objects are placed on top of it, no welding or other work is carried out nearby, during which the corrugated sheeting coating may be damaged. If planned long-term storage corrugated sheet, it is unpacked and transferred to an unheated dry room and stacked in stacks up to 70 cm high, with rows of sheets laid with identical slats).
Important! Be careful: when the original packaging is removed, there is a risk of sheets being moved by strong gusts of wind.
The lathing can be sparse or continuous. In bathhouses, the roof sheathing is traditionally made of wood, edged boards or OSB-3. The choice of the type of sheathing is not spontaneous, but depends on the slope of the slopes and the selected sheet profile.
| Brand | Angle of slope, in degrees | Lathing type | Step, cm |
|---|---|---|---|
| N-60 | >8 | Sparse | No more than 300 |
| H-75 | >8 | Sparse | No more than 400 |
| S-8 | >15 | Solid | 1 |
| C-10 | Solid | 1 | |
| C-10 | >15 | Sparse | 30 |
| C-20 | Solid | 1 | |
| C-20 | >15 | Sparse | 50 |
For sparse lathing with a pitch of less than 600 mm, it is recommended to use an edged board with a section of 100x25 mm.
Calculator for calculating materials for sparse lathing
Do-it-yourself corrugated roofing is one of the simplest and available ways roofing in private construction. Profiled metal sheets can be used as roofing on houses with pitched roofs, outbuildings, terraces, and gazebos.
Sheet roofing material made of durable steel by cold profiling is distinguished by sufficiently high strength due to its configuration - stiffeners ensure the resistance of the corrugated sheet to external loads.
Affordable price, wide choice color solutions and ease of installation make the material popular in private and industrial construction. with your own hands, corrugated sheeting will be done with high quality if you install the coating in accordance with the instructions and technological map.
The durability and reliability of the finishing coating is determined not only by compliance with the installation technology, but also correct execution Total roofing pie.
When designing a roof truss system covered with corrugated sheets, one should take into account the low weight of the roofing material - there is no need to use powerful, reinforced structures. The angle of inclination of the slopes is selected, first of all, based on aesthetic preferences and the appearance of the building under construction. Corrugated sheeting is successfully used on pitched roofs with an inclination angle of 12 degrees. It is also possible to install the coating on roofs with a lower slope, but in this case it is necessary to treat vertical and horizontal overlaps with sealant, and the vertical overlap must be carried out in two waves, regardless of the brand of corrugated sheeting.
To make a roof from corrugated sheets, you should use a load-bearing or wall sheet material. For arranging roofs with a sufficiently large slope angle, corrugated sheeting of the NS-35, NS-20, S-44 brands is popular. Installation of roofs with a small slope angle (5-8 degrees) requires the use of a self-supporting profile N-60 or N-75.
If the rafters are installed in increments of less than 1 meter, then boards with minimum cross-section 30×100 mm, if the pitch of the rafters exceeds 1 meter, then the cross-section of the material for the sheathing should be increased. For profiled sheet metal, the lathing can be padded in increments of up to 30 cm. It is permissible to use an unedged board as the material. In places where the valley is attached, continuous sheathing is performed.
To ensure optimal humidity conditions for the roofing pie, you need to take care of high-quality ventilation. Before installing the corrugated sheet, it is laid on the rafters waterproofing material and a counter-lattice is attached, thereby ensuring the necessary air gap between waterproofing layer And finishing coat from .
Before covering the roof with corrugated sheets with your own hands, all roof elements made of wood must be pre-treated with fire-retardant and bioprotective agents.
Installing corrugated sheeting on the roof does not require the use of complex equipment. Add to list necessary tools may include:
It should be noted that the profiled sheet with a polymer coating is not resistant to high temperatures, so cutting and installation are carried out in a “cold” way, without the use of welding, etc. To cut sheets, in addition to metal scissors, you can use a jigsaw or a hacksaw with fine teeth.
When cutting profiled sheets and other metal elements It is recommended to treat roof sections and sections with an anti-corrosion primer to extend the service life of the coating.
To lay corrugated sheets on the roof as a reliable covering, profiled roofing sheets are attached to the sheathing with self-tapping screws. Fastening elements for mounting corrugated sheets are made of hardened, galvanized steel. Each self-tapping screw is equipped with a special elastomer gasket (neoprene rubber), which allows you to ensure the tightness of the fastening point - access to moisture should be avoided wooden elements lathing to prevent their rotting, as well as moisture contact with the edges of the fastening holes of the corrugated sheet - metal with a damaged protective layer is susceptible to corrosion.
Technical parameters of self-tapping screws:
When installing a roof made of profiled sheets with a colored polymer decorative protective coating, it is recommended to use fasteners painted in the same color.
Laying corrugated sheets on the roof can be done using special seals. These are elements made of polyurethane foam or polyethylene foam. The seal is located between the sheathing and the roofing. The universal seal is a strip rectangular section. It is more effective to use a sealing material that is cut in accordance with the profile of the profiled sheet.
The seal reduces noise metal roofing, increase the thermal insulation parameters of the roofing pie, extend the service life of the coating. For ease of installation, the seal strips are coated with an adhesive on one or both sides. To install a roof made of corrugated sheets, it is recommended to use a seal with special perforations for ventilation of the under-roof space.
Installation of the seal makes it possible to eliminate large gaps that are formed when the profiled sheet adheres to the plane roofing structure. Birds, insects, cold and humid air can penetrate into the gaps, which negatively affects the condition of the roofing pie. The material from which the seal is made is moisture- and bio-resistant, durable - its service life is more than 20 years.
The corrugated sheet is fastened with self-tapping screws, which are screwed into the lower wave adjacent to the sheathing using a screwdriver. Each sheet requires 7-8 fasteners. The installation scheme for a roof made of corrugated sheets involves laying the material with an overlap vertically and horizontally. The amount of overlap between adjacent sheets should be at least one wave. The overlap parameters of the top row of corrugated sheets on the bottom are determined by the angle of the roof slope and can range from 100 to 300 mm - the greater the angle of inclination of the roof, the less the overlap.
Where should you start laying corrugated sheeting on the roof? If the slope has rectangular shape, fastening the sheets can begin from any end along the eaves line, left or right. If the slope has the shape of a trapezoid or a triangle, you should first consider the layout diagram, but in general it is recommended to first lay the sheet in the center of the eaves line, and then mount the sheets symmetrically in both directions.
Along the eaves line, corrugated sheeting is laid with an overhang of 60 mm, if installation of a drainage system is provided. If it is absent, it is recommended to increase the overhang of the cornice, taking into account the grade of material:
The first sheet of material is aligned along the end of the roof and the eaves, then secured with a self-tapping screw in the upper part. Subsequent sheets are pre-fastened along the longitudinal side, aligned along the cornice, and then attached to the sheathing. Next, laying the corrugated sheets on the roof follows the same technology, installing row by row.
The corrugated sheeting should be laid on the roof in such a way as to provide a front overhang up to 70 mm wide. The corrugated sheet at the eaves should be fastened at a distance of 30 - 40 cm, and the subsequent rows of screws are arranged in a checkerboard pattern, with the fastening step being about 1 meter. At the gable, the screws are screwed in at intervals of 50-60 cm. Fastening elements on the longitudinal overlap should be placed along the top of the profile at a distance of 30 to 50 cm.
To screw in the fasteners, you can use a screwdriver or a drill that has a reverse stroke and is equipped with a smooth speed control.
If a roof made of corrugated sheets is made with your own hands organized drainage, then the necessary elements are mounted on the eaves before laying the roofing begins. First of all, the cornice is hemmed, the gutter and cornice strip are installed. Roof ventilation is ensured by installing perforated soffit.
At the point where the roof ridge is attached, it is necessary to provide additional sheathing boards on both sides of the slope. The ridge must have two gaps for ventilation. Waterproofing is laid on the slopes, not reaching the ridge by 10 cm. The corrugated sheeting should not reach the ridge by 5 cm - this will facilitate normal ventilation of the under-roof space.
The ridge element is attached with 4.8×80 self-tapping screws to the structure through a wave along the top of the profile in increments of 30-40 cm. The ridge is closed at the end with plugs. The overlap along the length of the ridge element should be 15 cm.
At the final stage, the end of the roof should be covered with a wind strip, which is fastened with 4.8×35 self-tapping screws in increments of 50 cm along the upper wave of the profile. The overlap of the planks is 5-10 cm.
To care for finished roof You should use tools made of materials that do not damage the protective coating of the corrugated sheet. Accidental scratches should be painted over immediately to prevent corrosion.
In order to properly cover the roof with corrugated sheets with your own hands, it is recommended that you familiarize yourself with the video with all the intricacies of the installation of the material.
Durable quality roofing You can quite easily build it yourself from corrugated sheets. It is only important to know what a corrugated sheet roofing system is, as well as how to attach these sheets to the sheathing, and how to protect the internal under-roof space from moisture. Special attention It is also necessary to pay attention to additional elements, which must be used in full compliance with technology.
After you have completed all exact calculations roofs, you can already order profiled sheets. If you have already purchased the sheets, however, their installation must be postponed for some reason, for example, because of rain, then the sheets must be stored without removing the original packaging from them, in indoors on flat surface. Additionally, it is recommended to place beams under the sheets at a distance of 50 cm.
This covering material must be moved and rearranged quite carefully, holding it by the edges along its length and especially avoiding deflections and creases of the sheets. Corrugated sheeting must be moved carefully, as modern polymer coating considered particularly sensitive to mechanical damage . It is necessary to cut the material abrasive cutting tools: splinters from the wheel can severely scratch your hands, and significant heating is observed in the cut areas. If this is still necessary, then all damage must be immediately covered with repair paint.
Fortunately, the technology for constructing a roof made of corrugated sheets currently allows all installation work to be carried out in warm time year, from April to October, then the material will not have to be stored for a long time.
This will surprise some, but the same, at first glance, material must be laid in different ways. It's all about the manufacturers, because each manufacturer gives their own recommendations for installation, they are really important. Profile sheets Different companies are demanding in terms of their conditions, even if these differences are small. Therefore, you must carefully study the instructions supplied with the roofing material, and also not completely trust hired workers, who want to do everything their own way and “the dog is eaten on such roofs”.
If for installation of the roof you select a profile whose thickness is less than 0.7 mm, then during its installation you cannot move directly on it, as this will lead to damage. Therefore, you will have to lay wooden scaffolding on which you will need to walk.
Step-by-step instruction:
When working with such material, you no longer need to use a wooden substrate..
Master class on installation of metal profile roofing:
The main indicator high-quality installation roofing is its tightness. The roofing material serves precisely this purpose, to protect all internal structures from moisture and cold. Even a small gap can become a serious problem in the future, allowing dampness and leaks to pass through, which can lead to to the formation of fungus and material damage.
Currently the market can offer big choice a wide variety of materials that will differ in types and properties.
Wind protection and waterproofing involves the following actions:
Step-by-step installation of waterproofing under corrugated sheeting:
Most roofers install corrugated sheets in the following way: start from the bottom row, lay four sheets first, and each of them is fixed with only one screw located in the center. After this, the sheets are connected to each other with 4.8 × 19 mm self-tapping screws, which should be installed in increments of 50 cm. After this, you need to check how aligned the metal sheets are with the roof overhang, and then finally fix the roofing material.
If you are installing a roof for the first time, in order to avoid distortion, the profiled sheets must be attached in the following order:
The corrugated sheeting must be mounted to the base of the roof so that the edge offset is 4 cm from the eaves. This must be done in order to leave a gap of optimal size on the ridges, and so that the ventilation of the roof is not disturbed.
The consumption of self-tapping screws during installation of a corrugated roof is usually about 6 pieces per square meter. For such installation, dimensions 4.8 × 28−35 mm are suitable. These screws can be used for both wood and metal. From manufacturers roofing materials You can also purchase screwdrivers with a special attachment as a tool. You can also use a cordless electric drill.
Special screws for roofing with your own hands are indispensable, since this is the only way to ensure:
The most reliable high-quality self-tapping screws can be purchased from the same suppliers who sell corrugated sheets. It is recommended to choose screws made from stainless steel or carbon steel with a zinc coating. When purchasing these items, you still need to carefully inspect all sealing washers.
You can tell whether you have fastened the screw correctly or not by looking at the metal washer - it should have a rubber gasket protruding by about 1 mm.
It is necessary to screw the screws into the corrugated sheet strictly perpendicularly, directly into the deflection of the vertical waves. Although many builders debate this issue, each method has its own advantages. For example, a self-tapping screw in the lower wave creates the most reliable fastening, and in the upper wave rainwater has less chance of penetration under the roof space.
But manufacturers recommend fixing the corrugated sheet exactly in the deflection. On the ridge and eaves you need to screw screws into the sag through the wave, and in the center of the sheet they need to be screwed into each sheathing board. In total, each square meter requires approximately 5 to 8 screws.
It is worth noting that the installation of corrugated sheeting on the roof is truly accessible even to a person with little experience in construction. Of course, there are roofing materials that only experienced professionals can install correctly. But if we consider the case of modern corrugated sheeting, then everyone can cope with the installation on their own.
Thanks to long length With corrugated sheeting, the roof slopes overlap without any additional transverse joints, and this material can be easily adjusted and cut. The following tools will be needed for installation:
The profile can be laid on slopes of almost any angle of inclination, in this case it is only necessary to correctly calculate the amount of transverse overlap:
To attach the corrugated sheeting, you will need self-tapping screws with special sealing washers.
The metal roofing technology itself is not so complicated. It is important here not to damage the roofing during installation work. At first glance, this material looks quite durable and tough, but you still need to be careful when working with it:
Caring for such a roof will be very simple: rain itself washes away all the dirt from the surface, and you only need to clean it once a year drainage systems and grooves from clogged fallen leaves.
