How to properly cover a roof with corrugated sheeting step by step instructions. How to properly cover the roof of a house with corrugated sheeting

Roofing work has been valued at all times of construction. Thanks to this, we now have high-quality protection from bad weather above our heads. Over time, all roofing materials have changed, their production formulas have become more complex, and therefore their quality has increased. Today, one of the most popular roofing materials is corrugated sheeting. This article will talk about how to cover a roof with corrugated sheets with your own hands, and at the end you will be presented with a video so that you can navigate in practice.

Material characteristics

Profiled metal sheets are a very effective and durable product. They are made from high quality rolled steel with some protective layers. If the material is expensive, then it can be equipped with zinc and polymer protection. They do not allow moisture to affect the base metal, however, we will talk about this a little later.

The length of the sheet depends on the manufacturer. The maximum possible value is 12 meters. Such sheets are purchased on the markets quite rarely, so the factories decided to discontinue production of this length and focus on the most purchased copies. However, if you need exactly this length, you can order it from the manufacturer directly. As for the width, it almost always comes with a fixed value of 1180 millimeters, but again, all indicators depend on the manufacturer’s equipment.

The basis of the profiled sheet metal is steel. This material is durable and has its own resistance to corrosion, but prolonged exposure to moisture on any surface will somehow cause it to collapse. To prevent the metal from corroding, it is coated thin layer zinc In addition, polymer films may be present on the sheet. They not only protect the metal sheet from corrosion, but also increase its aesthetic properties.

The strength of the material depends on the thickness of the base and its profile. The recesses of the corrugated sheet can be different, for example, trapezoidal or square. The greatest rigidity is observed in the material with maximum thickness and square-shaped recesses.

Advantages and disadvantages of profiled sheets

Every developer should know how strong and weaknesses this or that product has. Not only successful construction, but also the duration of operation will depend on these data. By studying the positive and negative facts about roofing, you can immediately see whether it suits you or not.

The advantages of profiled metal sheet are as follows.

  • Cheapness. Today, some types of metal sheets are practically no different in price from asbestos slate.
  • High rigidity. Thick sheets of metal can be used not only as a coating, but also instead of interfloor covering, it’s true they have such houses frame type walls

  • Easy to install. Thanks to the variety of lengths, you can choose sheets that will completely cover the slope. Thus, there will be a minimum number of joints on the surface, which will significantly increase waterproofing performance. This way you can quickly, and most importantly, properly cover the roof.
  • Light weight. The low weight of the coating allows the use of thin-section lumber in the rafter system. This significantly reduces the load on the walls and foundation, and affects the final cost of the development.
  • Aesthetic indicators. Today the construction market offers many color solutions for metal sheets.
  • Long-term operation. If you are choosing a coating for a residential building, I advise you to consider more expensive products. They contain special protective layers of polymers that do not allow moisture to affect the core of the sheet. On average, this coating can last on the roof for 30-40 years.

Due to smooth surface corrugated sheeting removes sediment naturally. This can be attributed to both pros and cons. If a steeply sloping surface is taken as the base, then snow holders must be installed on it in order to control the melting of snow masses.

Well, where are there no minuses?

To cover a roof with corrugated sheeting, you need to acquire a fairly large amount of thermal insulation materials. Products that are not afraid of moisture are best suited for metal roofs, but most developers use conventional mineral wool slabs. The presence of a thick layer of thermal insulation solves two problems at once. Firstly, the thermal conductivity of the roof decreases, and secondly, the sound insulation properties increase.

Metal coatings have always stood out for their ability to accumulate condensation. There is no escape from this, so all that remains is to fight. To eliminate high humidity in the attic and roofing pie, natural ventilation is installed. If you know that it will not be enough, then you can equip the roof with artificial ventilation elements.

Purchase and transportation of material

As it turns out, many novice developers cannot determine the quality of the material by appearance. However, you can make a mistake even if you have a good understanding of roofing coverings. Let me point out that today underground production produces decent, but not very high-quality products.

To avoid purchasing low-quality profiled sheets, first of all pay attention to the following points:

  • Blisters or small scratches on the polymer protection. Damage to the integrity of this layer will indicate that the metal base in some place will not have protection. Why then overpay serious money for such a product if you can get a cheap galvanized sheet?
  • Dents and bends. If the metal sheet is deformed, then we can say with confidence that the protective layer has peeled off from the base. But it is worth noting that this only happens with cheap products; more expensive polymer layers do not peel off even after serious deformation.
  • Damage to protective film , coming after the polymer layer. Here you will have to inspect the products almost with a magnifying glass; it will be much easier to ask the seller than to divide the metal into parts. If the sheet was cut in a factory, then everything is in order, but if a grinder was used as a tool, then there is no point in talking about any protection, since it burned out during cutting.

You also need to be careful during loading and unloading procedures. If you do not know the seller, then it is better not to trust him. Some of my friends got burned at this very stage. They were present during loading and unloading, but did not inspect the goods individually. When they started removing the top sheets of metal from the stack, it turned out that almost everything there was defective.

Construction and roofing pie under corrugated sheeting

To cover a roof with corrugated sheeting, you need not only to understand the material itself, but also to make quality foundation. Both wood and metal can be used as the main materials for assembling the frame and sheathing. It is worth understanding that the latter option is expensive, but more durable. One way or another, the vast majority of developers prefer to use ordinary wood.

The tree is natural material, so it will be destroyed under the influence of the environment. For guard roofing elements special antiseptics and fire retardants are used. They can be applied manually, using a spray bottle, or using the bath method. The first two methods save a lot of protective solution, but the impregnation does not penetrate into the wood. Bath method requires a lot of protective substance, but after impregnating the element once, you can forget about this procedure for many years.

All elements rafter system must be durable and of high quality. As a rule, hard wood is used for this.

You already know that profiled metal sheets are light in weight, so there is no need to make a skeleton from large-section lumber. The only thing that is really important is to protect the roofing pie from the harmful effects of moisture.

An ideal roofing pie for metal roofs will look something like this:

  • Vapor barrier material
  • Counter-lattice
  • Lathing
  • Underlay carpet
  • Thermal insulation layer
  • Waterproofing
  • Roof covering

I think there is no need to describe the purpose of each of the points here, but I want to draw attention to the counter-lattice. This system creates air gap between the roof skeleton and the roofing pie. Thanks to this, the steam emanating from inside the premises will simply be blown away by the wind. This is very important, given the disadvantage of the accumulation of large amounts of condensate.

Now, let's figure out how to properly cover a roof with corrugated sheeting.

How to cover a roof with corrugated sheets with your own hands?

Many developers ask the same question: “How to cover a roof with corrugated sheets with your own hands correctly?” It will not be possible to answer this question right away, because first you need to study the building area, the amount of precipitation, prevailing winds and other nuances that affect the roofing. It is worth noting that you can cover the roof with corrugated sheeting with your own hands, even if you do not understand construction, and this is a serious plus of this product.

On some sites I noticed the following expression: we cover the roof with corrugated sheeting only if the slope of the slope is more than 12 degrees. Minimum slope for metal roofs it really is 12-14 degrees, but for some reason I haven’t found information anywhere on how to remove the restrictions. In order to cover a roof with a profiled sheet with a slope of less than 12 degrees, it is enough to use an additional waterproofing layer, the so-called lining, and a high-quality sealant. It processes vertical and horizontal joints.

Let's consider a technology that will answer the question: how to properly cover a roof with corrugated sheeting with your own hands.

Preparatory work

At this stage, it is necessary to calculate the need for materials, purchase and deliver it to the site. In addition, get all necessary tools and uniforms. Be careful when working with metal sheets. If you do all the work yourself, I advise you to purchase special gloves. In appearance, they are somewhat reminiscent of chain mail armor, but when working in them you definitely won’t cut yourself or lose your fingers.

To cover the roof with corrugated sheets with your own hands, you need to acquire the necessary fasteners. Special screws with a rubber washer are suitable here. Thanks to the lining, all fastening areas will have a good connection with the base, therefore, the tightness of the roof will increase.

If the installation process is carried out with negative temperatures, then special shoes and uniforms are selected. As for things, they simply should not hinder your movements, but special attention should be paid to shoes. It should not slide on the metal surface. If you do not have the opportunity to find all this, then it is better not to risk it and wait for suitable conditions.

Now, I'm ready to answer main question: “how to properly cover a roof with corrugated sheeting?”

Installation work

After laying the Mauerlat and placing the rafter beams in their places, you can begin laying the vapor barrier layer. Here it is best to use a membrane that allows steam to pass through without problems. This will significantly reduce the amount of condensation that accumulates in the attic. It is very important not to stretch the vapor barrier fabric, otherwise there is a risk of it breaking. Release the tension and let it sag a little.

Installation of counter-lattice on metal roofs simply necessary. Again, it's all about condensation. Thanks to the counter-lattice, an additional path is created for the inflow and outflow of air, which allows you to draw out excess moisture from the attic.

Next comes the installation of the sheathing. Profiled metal sheets have sufficient rigidity to lay them on a discharged surface. Optimal step sheathing elements are 40-60 centimeters. However, if necessary, you can reduce or, conversely, increase these values.

After installing the sheathing, we look at the functional purpose of the building. If this is a residential building, then we spread underlay carpet. Otherwise, we immediately cover the roof with corrugated sheeting. If you plan to do all the work yourself, then look at the roof slope. On steeply sloped roofs, the lining can be laid locally, only in places of high humidity, but if thermal insulation material does not repel water, you will have to cover the entire surface.

On top thermal insulation boards You can lay small bars. They will lift the insulating layer from above and allow air to dry the insides of the roofing cake. Top waterproofing should be chosen from those products that block moisture in only one direction. The same membranes are ideal for this role.

Start styling yourself roofing Can be done from any side of the roof. It is ideal if you select sheets of equal size to the slope. This way you can achieve a minimum number of seams, and with this the efficiency of the entire roofing area. The fastening elements should be located at the bottom of the wave, and if the sheets are joined together, then at the top.

The installation of the roofing part of the buildings will be completed with the installation of auxiliary elements in the form of fittings for ventilation and chimney pipes.

As you can see, even an inexperienced developer can cover a roof, but the nuances must not be overlooked.

How to do all the work efficiently?

I often hear similar expressions from developers: “we cover the roof with corrugated sheets with our own hands, but we can’t achieve the quality that roofing crews offer, why?” The answer is quite simple, although it requires some research.

Before properly covering the roof, you need to plan everything in advance. Experienced roofers already have a list of approximate actions, and they follow them without hesitation. An example would be material inspection. Taking a sheet of metal in their hands, they can easily identify its quality by color, weight and layers. Today, there are a lot of high-quality fakes on the construction market, so beginners often make mistakes when choosing the right material.

If you don’t understand how to properly cover a roof, I suggest watching this video:

The next reason lies in the developer’s unwillingness to carry out all the work at once. Let's look at this situation with an example. If you cover the roof with corrugated sheets with your own hands, then you can spend a lot of time on this procedure. You are not bothered by deadlines, and no one is forcing you to do this. Consequently, an unfinished building can stand for a very long time, as a result of which all roofing materials stored on outdoors may be damaged or lost significant part its positive properties.

By the way, a portable and inexpensive wood moisture meter is available for sale. Such a device will allow you to determine whether it is possible to install lumber or not.

IMPORTANT: Almost every person can properly cover a roof with corrugated sheets, the main thing is that all actions are clearly planned and the entire process of laying the roofing sheet does not take more than two weeks.

If your home requires a roof that has an attractive and sophisticated look at a relatively low cost, a corrugated roof — cold-rolled galvanized steel sheet coated with non-ferrous polymer materials- This is what you need.

Advantages of profiled steel sheet:

  • excellent performance: resistance to weather conditions, solar radiation, mechanical strength, corrosion resistance,
  • short specific gravity(from 5.5 to 9.5 kg/m2), therefore low load on rafter systems and sheathing,
  • roofing material can be selected according to texture and color to match the design of the building,
  • relatively low price with high aesthetic qualities.

Which corrugated sheeting is suitable for the roof

Any brand of corrugated sheeting (universal, load-bearing or wall) is suitable for roofing, but laying thin wall material will require almost continuous sheathing. For ordinary lathing with a pitch of 65-100 cm, it is preferable to use a stronger and more rigid profiled sheet. The most commonly used material is with the following indicators:

  • grade N or NS (load-bearing and universal),
  • corrugated sheet thickness from 0.5 to 0.7 mm (strong and light at the same time),
  • corrugation height 20-75 mm (provides the possibility of elastic deformation of the roof),
  • the presence of a capillary drainage groove,
  • coating color that matches the existing or planned exterior of the house.

The price of corrugated sheeting depends on several indicators of the material.

What you need to cover a roof with corrugated sheets yourself

A simple pitched or gable roof country house, summer kitchen Covering a garage or garage yourself will not be difficult with one or two helpers and some skills in working with a screwdriver and a jigsaw. A broken gable roof of a house with an attic will also be suitable for independent work. This video will help.

If the roof frame is of a more complex configuration, you should invite experienced specialists to cover the roof with corrugated sheeting. The price of the work will depend on the complexity of the roof and the area of ​​the slopes.

How much material will be needed

Calculate the amount of material for a single-pitch or gable roof, knowing the size of the slopes, it will not be difficult. If the length of the slope is 12 m or less, you need to divide the width of the slope by the width of the material, and increase the resulting number of sheets by 15%.

For more complex roofs, you can calculate corrugated roofing sheets online using special programs. The programs allow you not only to determine the amount of material as accurately as possible, but also calculate the slope of the roof, the dimensions of the overlap, and determine best option location and fastening of corrugated sheets.

Tools and fastening materials for work

For work you will need measuring and cutting tools, fastening materials:

Features of laying roofing from corrugated sheets

It’s best to do the work with four people, it will work out much faster. Two people can also handle it, but working alone with long sheets of corrugated sheets is very difficult.

  • The minimum roof slope angle is 10 degrees. With a smaller slope angle, water can get under the material.
  • The standard length of the profiled sheet is 12 m. If the length of the slope is shorter or longer, the sheets will have to be cut.
  • To protect the corrugated sheet from corrosion, waterproofing and vapor barrier should be done along the sheathing.

Installation of sheathing under profiled sheets

An important step in installing a roof made of corrugated sheets is the organization of hydro- and vapor barriers to protect the metal from corrosion when water vapor enters.

They do this in two ways:

  • laying a vapor barrier on the rafters under the sheathing and waterproofing (roofing felt) on top of the sheathing under the corrugated sheeting;
  • organizing a ventilated roof, creating a ventilated space between the waterproofing layer and the roofing material. To do this along rafter legs they install false rafters from bars along the waterproofing, make lathing on them, you get a layer cake: rafters, waterproofing, false rafters, lathing, corrugated sheet.

Important! All elements of the sheathing must be impregnated on all sides with an antiseptic composition for wood. This will extend the life of the roof.

The sheathing boards are laid in increments of 0.5-1.0 m, attaching them to the rafters with nails or self-tapping screws. The thicker and more durable the corrugated sheeting is used, the greater the distance between the sheathing boards. So, for example, for profiled sheets of grade CH35, the lathing pitch is 0.5-0.6 m, for CH44 - 0.65-0.75 m. A distance of more than 1 m between the boards should not be made.

Having made the sheathing, you need to check the diagonals of the slope and align the slope along the verticals, horizontals, and diagonals. This will greatly facilitate the work of laying corrugated board on the sheathing.

The procedure for laying corrugated sheets with your own hands

  • Corrugated sheets are laid from bottom to top, starting along the slope from the end of the building, from left to right or from right to left - it all depends on which side of the sheet the manufacturer made the capillary groove on. When laying the material, the groove should be closed by the wave of the next sheet.
  • The size of the overlap of corrugated sheets horizontally and vertically depends on the angle of the roof slope. For small values ​​of the angle of inclination of the slope, the sheets are laid with an overlap in two waves vertically, for high values ​​- in one or half a wave.
  • The horizontal overlap of the slope is at least 10 cm. The first row is laid with an overhang of 30-50 cm above the overhang (the distance depends on the design drainage system). The joints between the profiled sheets are sealed with a special tape. The sheet of the second row is laid with an offset along the end by half the width.

If 2 or more people, lifting the sheets is easy. They are laid on a frame of 5-6 bars in packs of 5-10 pieces and pulled up with a rope along inclined boards attached to the sheathing.

To prevent the sheets from rolling off, nail one or two bars from below onto the sheathing and place a pack of covering sheets. It’s much more convenient to work this way than to feed one at a time, although this method is also used.

How to attach corrugated sheets to the roof correctly

The sheets are secured to the sheathing with self-tapping screws, washers and sealing gaskets. Their number is no more than 6-10 pieces per 1 sq.m. flooring On the slope, screws are screwed into the lower ones, and on the ridge - into the upper waves of the sheet.

If the material is thin, the screws are simply screwed in with a screwdriver; they easily pass through without damaging the coating. On thick steel sheets in the places where they are attached to the sheathing, it is advisable to make preliminary markings and drill holes for self-tapping screws with a drill.

Important! It is necessary to accurately align and correctly install the very first sheet; the quality of the entire work will depend on it.

The first sheet is first secured in the middle with one screw and the overhang from the eaves and the vertical position of the sheathing are carefully aligned. After this, it is secured with a second screw.

The material is attached to the upper and lower boards of the sheathing by screwing screws into each deflection of the wave, into the central boards - through the deflection.

The second highest row is placed with the sheets shifted to the right or left by half the width. Cut the profiled sheet with an electric saw, a hacksaw or a jigsaw with a metal file. They do it on the ground.

Attention! You cannot cut profiled sheets with a grinder. This will destroy the polymer coating. For cutting, use metal scissors, and paint over the sections.

Horizontal joints are also sealed with tape. Overlapping screws are screwed into each recess of the wave. The rubber sealing washer should protrude 1-2 mm around the perimeter of the screw head, this indicates that it is not pinched or loose.

Installing a ridge on corrugated sheets

Ridge additional elements for corrugated roofing are produced

  • simple in the form of a sheet bent at an angle with a shelf width of up to 30 cm,
  • with a semicircular edge,
  • with a U-shaped edge and shelves of the same dimensions.

To install a ridge on a roof made of corrugated sheets, the last row of sheets should be aligned at the top along the end and laid in the same horizontal plane. The installation procedure is as follows:

  • a tape or strip of ridge seal is placed on the edge of the last row of sheets,
  • bars are fixed parallel to the ridge axis,
  • screw the ridge elements to the bars with self-tapping screws into the upper corrugation after 20-30 cm, starting from the side where the wind most often blows,
  • the ends of the semicircular ridge are closed with special plugs,
  • The U-shaped ridge is attached to a block, which is specially installed under it on the roof ridge.

A roof made of corrugated sheets will delight you with its beauty and evoke a feeling of pride in the excellent work done with your own hands. The money saved on this can be spent on making an original weather vane that will decorate the house.

One of the most inexpensive, durable, practical options for roofing material is, or, as they also say, corrugated sheets, metal profiles. This is a sheet of metal that is coated with several protective layers and then passed through a forming machine, which presses ridges and grooves into it to give it 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.

Types of corrugated sheets

Exist different types 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.

By purpose

Corrugated sheets are made from sheet metal different thicknesses. 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 load. 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 wave height in millimeters that is formed in a given 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.

By type of coverage

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, the protective coating can be zinc or zinc-alumina. 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.

  • Polyester (glossy and matte). Profiled sheets coated with polyester have a relatively low price (the cheapest of the colored ones) and good characteristics— the coating is plastic and does not change its color for a long time. Matte polyester has no glare on the surface, it looks like velvety. This is achieved using a different application technique and a thicker layer. This coating is the most resistant to mechanical damage.
  • Plastisol. It has increased resistance to aggressive environments, but does not tolerate ultraviolet radiation. A roof made of corrugated sheets coated with plastisol will quickly fade (two to three years).
  • Pural - polyamide and acrylic are added to polyurethane. The coating is more uniform, and the service life without changing color is ten years. The disadvantage is the high price.
  • PVDF is a composition of polyvinyl fluoride and acrylic. The coating is expensive, but lasts a long time even in an aggressive environment. This roofing material can be used on sea coasts. Another great property is that it can clean itself. The slightest rain, and the roof made of corrugated sheets with PVDF coating shines like new.

Under normal conditions, the roof is made of corrugated sheets coated with polyester. In terms of price-quality ratio, it is optimal.

How to lay corrugated sheets on a roof

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 top sheet overlaps the lower one, depends on the angle of the roof slope: the flatter the roof, the more approach is necessary.

Most factories that produce corrugated sheeting can offer you to produce sheets that will cover your entire roof - from the ridge to the overhang - in one long leaf (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.

How to properly attach corrugated sheeting to the roof

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 reverse side boards. 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 punch double layer 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.

What to cut

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.

Installation procedure

After assembling the rafter system, they nail the front board, hooks are attached to it for installation, and on top of this there is a special strip - a drip edge, onto which the edge of the waterproofing film is then placed. 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:


Corrugated roofing: components

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.

Installation and sealing of the ridge

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 ridges with ventilation (in the photo), but even if you just install a regular ridge element between the corrugated sheet and its edge, you get 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 into a 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 polyurethane foam, 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.

Finishing the overhang with corrugated sheets

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.

Connecting corrugated sheeting to the wall

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 this one has different size and different profile.

You can take a corner strip with shelf dimensions of 150*200 mm. The shorter side is placed on the wall, the 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.

Pipe passage

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.

For the passage of round pipes through the roofing material, there are special steel or polymer aprons. 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 soap solution), but the joint, nevertheless, for reliability, is sealed.

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.

The developer undertakes part of the work. Roofing work is responsible, but not difficult. Covering a roof with corrugated sheets with your own hands is a feasible task for a craftsman. You just need to follow the sequence of actions and follow simple rules.

Roofing made of corrugated sheets, instructions for selecting materials

Corrugated sheeting is durable and easy to use. Suitable for flat, steep slopes, roofs of complex shapes. Sheets 1.5–12 m long with a gradation of sizes every 0.5 m and a working width of 0.8–1.2 m are molded with depressions in the shape of a trapezoid or wave. Manufacturers rely on the GOST 24045-2010 regulations on profile sheet products with trapezoidal corrugations.

The purpose of the material is determined by the technical properties by letter indexing:

  • N (load-bearing) – differs in corrugation height of 45–160 mm, sheet thickness, reinforced with additional longitudinal ribbing, withstands extreme loads;
  • NS, PC (universal, roofing) – profiled grooves along the shelves allow them to withstand snow and wind loads without restrictions on the roof windage, height 20–45 mm;
  • C (wall) - used with restrictions: the height of the shelves is taken to be at least 20 mm, the lathing is more frequent or solid.

Choosing a roofing covering of this type stimulate benefits:

  • long service life with minimal maintenance;
  • The polymer coating lasts up to 50 years, the warranty period is up to 20 years.
  • strength with low weight;
  • breadth of color palette;
  • availability of do-it-yourself roofing with corrugated sheets.

Among the disadvantages, the drum effect is considered significant - transmission of the sound of falling drops with possible amplification. Laying a layer of insulation eliminates the resonance defect.

Corrugated roofing, technology

We choose a corrugated sheet, the reference point is the steepness of the angle of the rafters. Do-it-yourself roofing with corrugated sheets gives you freedom in choosing the material. Used as a roofing and wall profile with a corrugation height of at least 20 mm. And on the awnings over the porch, flat covering Smaller economic blocks are acceptable.

In order to reduce the cost of construction, a combination of roofing and wall profiled sheets with the same corrugation width is allowed. In areas with a change in geometry towards a decreasing angle, a discrepancy in the profile height is allowed. How to cover the roof is up to the developer to decide.

Scratches and other damage to the anti-corrosion coating are treated protective coating immediately, during storage

The general requirement is to limit the angle reduction. For flat roofs for auxiliary buildings, the limit for reducing the angle is 8°, for residential buildings – 10° with the installation of continuous plank sheathing or OSB sheets.

The sheathing is discharged from exceeding an angle of 15°. Discharge step:

  • S-20 – 0.2–0.3 m;
  • S-21 – 0.3–0.5 m;
  • NS-35, S-44 – 0.5 m up to 15°, more than 15° – up to 1 m; permissible load 0.43–0.76 t per m 2.

Key components of corrugated roofing

The rafters rest securely on the Mauerlat, but installation will have to wait until the steam-conducting membrane is laid and glued. Moisture removal will extend the service life of the insulation; the film will not allow a draft to blow out small fractions of the insulation cake from.

A counter-lattice is attached to the nails on top of the membrane. The purpose of the 20–40x50 timber is to create a ventilation gap for ventilation of the insulation and roofing. In frost and heat, the breeze will reach the ridge. Condensation deposits on inside sheets will not happen. The LSTK metal profile is not very common in private construction. The technology for carrying out the work is identical, so the type of material is not distinguished separately.

Wooden parts are nailed. Fastening OSB boards is permissible with self-tapping screws.

Based on the table dimensions, the frequency of laying the sheathing was determined; we nailed down unedged boards and slabs. The joints are arranged in the center of the counter-lattice beam. Mostly softwood lumber is purchased.

The installation of the 3 listed elements is carried out in stages from bottom to top, as shown in the photo. It is necessary to achieve the most even surface possible without sudden changes in height at the joints.

Aspen is also rejected - one is short-lived and weak: it will break under your foot during installation, the other is subject to excessive warping and twisting.

Fastening corrugated sheets to the roof

We are preparing the corrugated sheet fasteners. You will need anodized metal screws with a drill at the end and sharpened ones with fine threads. A rubber gasket is required under the cap. It is easier to apply force to the hex head. The Phillips slot is harder to hit.

Average consumption - 7.5 pcs per 1 m 2. You will need 4.8x30 screws for sheets and 4.8x50 (60) for additional elements. The tools you will need include two batteries and a bit, an angle grinder with a 1 mm thick disc for cutting to length, corners, and beading additional edges.

Experts argue: how to fix it? The self-tapping screw in the bottom shelf holds the corrugated sheet more securely. The top mount is safe in terms of leaks into the under-roof space during stagnation melt water on a gentle slope. Combinations with fastening possible. Manufacturers insist on fastening in the first way: in a deflection.

For a vertically fixed self-tapping screw, the sealing gasket evenly protrudes from under the head by 1 mm in a circle.

On the ridge and cornice, self-tapping screws are placed through the wave, in the middle of the sheet - at intervals into each board of the sheathing. The joints of the sheets are fastened through 2 waves. Mark broken screws with beacons to fix the hole without much searching.

Installation of corrugated sheets on the roof, instructions

How many vertical sheets are needed is up to the builder to decide. Ordering a full-size sheet without subsequent joints is economically justified. But you will need to wait for delivery.

Sheets standard length installed in two ways:

  • along the cord in a row, starting from the bottom;
  • in an error-free way according to the scheme as in the photo.

The first sheets of corrugated sheets are attached to one self-tapping screw in the middle. An overhang of 4–5 cm beyond the lowest point of the rafter is necessary for optimization natural ventilation and installation of cornice. Then fix the set together after 0.5 m. After checking the evenness of the installation along the roof overhang, the profiled sheets are finally attached.

When the roof slope angle is less than 15° and the corrugation depth is less than 20 mm, the adjacent sheet is superimposed on 2 waves of the previous one. Increasing the angle allows you to overlap only 1 wave. If there is a drainage groove in the bottom shelf, it should be blocked.

The top row overlaps the previous one. The amount of overlap relative to the steepness of the roof:

  • up to 15° – 200 mm;
  • up to 30° – 150 mm;
  • over 30° – 100–150 mm.

Even in soft shoes you cannot step on the ridge of the corrugated sheet - it will bend.

Making junctions on corrugated roofing

The connection of the corrugated sheeting to the wall prevents moisture from leaking and blowing snow under the corrugated sheeting at the joint. The corner element is available with polymer coating 2 m long, galvanized 2.5 m.

The connection strip for corrugated sheeting is fixed through the upper wave. This is where the long fastener will be needed. It is advisable to purchase full set components from the same manufacturer: at a minimum, there will be no difference in color.

It is difficult to connect to a pipe on a corrugated roof for the first time. The wings of the chimney apron are adjusted to tightly cover the pipe. The upper edge is pressed by tightening the screws into the dowels.

The adjacent profiled sheet will have to be reinstalled - a forced manipulation in the name of preventing leaks. Without installing a porous seal that copies the profile, this action will turn out to be a half-measure. And the indispensable sealing of the vertical seam.

The location of the pipe at the bottom of the roof dictates the need to install a snow guard.

Eaves overhang of corrugated roofing

Framing the lower overhang will prevent the wood from getting wet, fraying the insulation, and will give a strict appearance to the structure. We present a choice of 3 equivalent options for designing the overhang along the rafter legs.

Installation begins from the bottom on the wall side. In the first two options, the soffit as a frontal board is stiffer and is not limited by vertical dimensions. You won't need hexagon screws.

For completeness, all that remains is to install an end strip to protect the outer rafters, extending beyond the ridge of the corrugated sheet. Fastening to the rafters is carried out along the lower edge with an indentation of 25 mm.

Roof ridge made of corrugated sheets

The gap of the upper edge of the intersection of the roof slopes is covered ridge strip. The shape of the ridge causes air circulation to ventilate the under-roof space.

Sequence of installation operations:

  • double-sided tape is applied according to the width of the shelf (100–300 mm);
  • a porous seal is installed;
  • According to the markings, 50 mm is cut off from the support bar and vertical stand, the upper bend is cut into depth, the ends of the profile are bent at right angles (or a standard plug is installed);
  • sealant is applied to the seal;
  • the ridge is installed over the end strip;
  • fastening with self-tapping screws.

The roof, assembled from corrugated sheets with your own hands, took on the appearance of a single whole. Congratulations.

Self-installation of corrugated roofing - video

A home is a cozy nest where you are always welcome, fed and warmed. To do this, it must be built and then protected from wind and precipitation. You need a reliable and inexpensive roof, and doing it yourself will be even better because you can be confident in the quality and compliance with the technology. For roofing works There are many materials, but metal profile is the most popular of them. This is a budget-friendly and reliable material that looks beautiful and neat. In addition, it is easy to install and does not require special qualifications. Let's find out how to cover the roof with corrugated sheeting and do this work with your own hands.

In this article

Types of roofing and material calculation

To understand how to cover a roof with corrugated sheets with your own hands, you need to find out what types of roofs there are and design it yourself. We choose the type of roofing according to our needs. The consumption of material, the direction of flow of water and melted snow, as well as strength depend on this. The design of the roof depends on the direction of the slopes, and it is divided into the following types:

  • three-gable roof;
  • hipped roof;
  • gable roof;
  • combined roofs.

When designing a rafter system and before covering it with corrugated sheets, you need to take into account the low weight of the entire structure, so you don’t need too powerful beams.

The slope angle of the slopes should be 12 degrees or more. The greater the slope, the less the load on the rafters and sheathing, as well as the less consumption of timber and corrugated board. If at angles of 12-15 degrees the distance between the sheathing elements is 400 mm, then for a slope above 15 degrees a distance between the bars of 600 mm or more is required.

How to use corrugated sheeting and how to cover a roof? The sheets can be laid with an overlap in one wave, and the top sheet can be placed on the bottom sheet with an overlap of 180-200 mm. For ease of work when attaching the sheathing, it is necessary to make a template equal to the distance between the bars. Covering the roof with corrugated sheeting means that everything wooden elements must be treated with fire retardant and bioprotective compounds.

The most important stage of work is taking measurements and calculating the material. It is necessary to measure the slopes diagonally, and these values ​​should not diverge by more than 20 mm. It is also important to measure the plane of the slopes; this measurement is done with a level using a cord; here, for every 5 m, the possible deviation is no more than 5 mm, otherwise the sheets will not fit together. Then the amount of metal profile is calculated, where the length of the cornice is measured and divided by the width of the sheet, taking into account the overlap of one wave.

When calculating the amount of corrugated sheeting from the slope to the ridge, you need to take into account the overlap of sheets of 180-200 mm. Complex roof It will be useful to break them down into geometric shapes and calculate them separately and then sum them up. Separately, it is necessary to take into account windows, pipes, ridges and ends. It is important to take into account the overhang from the slope, which should be at least 50 mm.

Roof structure

In difficult weather conditions in Russia, the problem of how to properly cover a roof with corrugated sheeting must be solved taking into account insulation and vapor barrier. Standard technology involves insulation mineral wool interrafter space and vapor barrier. Then it is necessary to lay a hydrobarrier, which is a membrane film. It is laid directly on the rafters and allows the previous layers to remain dry.

After laying the waterproofing layer, a counter-lattice is installed, which runs along the rafters and over the waterproofing with 25x40 mm bars. Next, the sheathing is filled in increments depending on the angle of inclination of the roof. We splice the sheathing slats only on the rafters. In places where pipes exit, on valleys, on ridges and eaves overhangs, we make a continuous sheathing or install additional bars.

Next, the profiled sheet is laid in compliance with all the rules that will be described later. Thus, before covering the roof with corrugated sheeting, you need to make certain preparatory work, which are as follows:

  • installation of a vapor barrier layer to prevent moisture from entering the insulation layer;
  • laying a thermal insulation layer to compensate for temperature differences in both hot and cold weather;
  • installation waterproofing membrane, which is used as additional insulation, a waterproof surface and protects against condensation, thereby ensuring a long service life of the roof;
  • installation of counter battens and sheathing necessary for roof ventilation and increasing strength properties.

Tools and auxiliary materials

In order to properly cover the roof with corrugated sheeting with your own hands, you need to develop your own approach to this process. A properly chosen tool will be of great help and will improve the quality, as well as increase the speed of installation. Let's figure out what tool is needed and why.

When performing roofing work, you will need a not very complex set of tools, namely:

  • measuring set, which includes a tape measure, level and cord;
  • a set for cutting and marking, including a knife, pencil or marker;
  • punched and electric metal shears;
  • construction stapler and sealant gun;
  • electric drill;
  • cordless screwdriver with bat;
  • rubber hammer;
  • soft brush.

Metal profiles with a polymer coating are not resistant to high temperatures, therefore, it is not recommended to use welding and a grinder during installation. To ensure a long service life of the roof, the cut areas during cutting must be treated with an anti-corrosion compound. It must be taken into account that working on the roof is a traumatic process. When cutting and assembling the coating, it is very important to follow safety precautions and work only with protective gloves or mittens.

Profiled sheets are attached to the sheathing with self-tapping screws with a rubber gasket, which does not allow moisture to penetrate through the fastening hole. They can be electrolytically galvanized or coated powder paint. It is advisable to select self-tapping screws of the same color as the covering sheets, since this way they are less noticeable. TO auxiliary materials There are also special polyurethane foam seals with an applied adhesive composition. They are made with perforations to ensure better ventilation of the under-roof space.

Installation of corrugated sheets

When lifting sheets to the installation site, it is important to use wooden joists so as not to damage the inner surface of the decking and avoid further corrosion. A huge risk of roof damage arises when covered large areas. At this time, you need to move only in soft shoes and with caution. It is also not worth carrying out work in windy weather, since you can not only damage the sheet, but also harm the health of others. You can use a soft brush to remove debris.

We have considered the preparatory stage of lifting corrugated sheets, but how to cover the roof? There are several ways that we must summarize and suggest the best option. When the slope is in the shape of a trapezoid or triangle, it is recommended to first lay the sheet in the center of the cornice, and then lay the sheets on both sides. We must not forget that the overhang should be at least 50 -70 mm. Otherwise, if the coating consists of several rows, you just need to follow the order of installation.

Careful placement of the first sheet leads to correct styling everyone else, so he needs to be given Special attention. First sheet metal profile you need to align it with the end of the roof and the eaves, check the horizontal position with a level and secure it with a self-tapping screw in the upper part of the profile. After this, fasten one end into each sheathing beam and into each wave along the cornice. The following sheets are attached through the wave in a checkerboard pattern. The sheets of the top row are placed on the bottom ones with an overlap of 180-200 mm. We attach a horizontal overlap to each wave, and the same along all edges of the roof. It is advisable to make the front overhang equal to 50-70 mm.

With this method of correctly covering the roof with corrugated sheeting, you get a neat and reliable roof. An important element final installation is the operation of fastening the ridge elements and end strips, as well as snow retainers. When attaching the ridge, you need to maintain a pitch of 300-500 mm and screw the screws into the upper bend of the sheet, with an overlap of the planks of 50-100 mm. Wind elements need to be covered in the same way. We must not forget about self-adhesive seals and sealing of joints between the roof and auxiliary elements.

Option for installing a cornice overhang

Thus, it was described here how to properly cover a roof with corrugated sheeting. Do this work yourself, receiving not only significant savings, but also high moral satisfaction from a well-made roof. May it serve you for many years.