How to cover a roof with corrugated sheeting. Independent construction of the roof of a private house How to properly cover the roof with corrugated sheets with your own

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It’s great, and you should think about which one to choose even at the stage of designing a house. Whether additional costs will be required for lathing, vapor barrier, and additional elements depends on what type of coating you plan to purchase.

Each roofing material has its own installation features, so the decision on how to cover the roof directly depends on its choice.

Types of roofing materials (from left to right): bitumen tiles, metal tiles, ceramic tiles, polymer-sand tiles, steel roofing.

The most popular roofing method in the recent past. It is still in demand today because of its budget. Slate is made from cement stone, which is reinforced with asbestos fibers. It is easy to install and highly resistant to adverse influences. environment, durable and fireproof. The disadvantage of this material is that renovation work It is difficult to carry out on a roof covered with it due to its fragility. Therefore, it is necessary to construct wooden floorings (ladders) with your own hands on which you can move. The exterior of the house, with its slate roof, is rather faded and rustic;

Another name for this material is Euroslate. He solves the problem of the aesthetic ugliness of his fellow, since there are different rich color and more even. It is made from sheets of colored bitumen, which are corrugated. It is an inexpensive, waterproof and durable roofing material. Currently, you can buy transparent Euro slate, which has best characteristics and light weight. But its price is correspondingly much more expensive;

Soft roof

For flat roofs, roll materials are used, which are called soft fused roofing. They are made by applying bitumen to a base (fiberglass, polyester fiberglass) in combination with a binder and filler. These roofs are good because they do not produce a “drum effect” when it rains. The service life of these materials is long, up to 20 years, they are easy to install and repair with your own hands;

Bituminous shingles

A type of rolled soft roofing material. The tiles are strong, durable, and elastic. It is guaranteed to last at least 50 years. It is made on the basis of fiberglass and consists of three layers of bitumen mass. Soft tiles- an aesthetically attractive roofing material that can be made in different colors. The most popular manufacturers: TEGOLA (Italy), PIKIPOIKA (Finland), SHINGLES (Russia);

Ceramic tiles

Beautiful and durable roof covering. Its service life is at least 60 years. It requires the installation of more reliable rafters and dense sheathing, since the weight of this material is large. Ceramic tiles are very expensive, installation requires care, and it is inconvenient to cover complex roofs;

Metal tiles

A very popular roofing material. It is made of steel sheets with a polymer coating applied to one or both sides. Its installation is simple and quick, but it requires the installation of lathing and a vapor barrier layer. It is necessary to purchase additional elements that allow you to beautifully decorate the roof with your own hands. Metal tiles come in several types, the most popular of which is Monterey. The sheets are fastened using special roofing screws. IN last years in Russia they began to produce metal tiles that are not inferior to imported ones in terms of characteristics, but at a much more reasonable price;

Corrugated sheet

The most commonly used material for roofing. It is made of galvanized iron, onto which a polymer coating is applied. The color of corrugated sheeting can be different, but it is always bright and juicy. No sheathing is required for installation; additional elements can be purchased if necessary. The main thing is to buy a ridge and valleys. The price of this roofing material makes it affordable to any developer. It is quite easy to make a corrugated roof with your own hands.

Corrugated sheeting is made of galvanized iron, onto which a polymer coating is applied.

Features of installation of metal tiles

Sheathing a roof is much easier using climbing equipment than using scaffolding and ladders.
The main one is a large amount of condensate that forms on its inside. Therefore, vapor and waterproofing is necessary. You should not skimp on the continuous covering of the rafters and lay vapor barrier material directly on them. Savings in in this case is small, and the quality of the roof will suffer significantly. If punctures and tears form in the membrane, all the moisture will begin to accumulate in the insulation, which will soon render it unusable.
When casing behind pipes, it is recommended to avoid “snow pockets”, which are the causes of spring leaks.
It is advisable to make an “end bumper” on the roof. On sheets of metal tiles laid along the ridge, a centimeter bend should be made. This will help the roof maintain its integrity during strong winds and will prevent snow from blowing under the ridge.
After cutting sheets of this roofing material, some metal shavings remain. You need to remove it with your own hands, carefully, with a soft rag, so as not to scratch the coating of the metal tile.
Such a roof needs a good under-roof ventilation. This is ensured by the installation of lathing and counter-lattice. An important rule: the pitch of the counter-lattice beams must correspond to the pitch of the roofing material wave. In this case, its installation will be quick and high-quality.
Roofing screws are placed in a checkerboard pattern.

How to cover a roof with corrugated sheeting?

The corrugated sheeting attachment points should be located in the recesses between the waves. Step - 30-40 cm.

Most roofs are covered with this material. The reason for this is its price and aesthetic appeal, ease of installation. Corrugated sheeting is also good because the roof made from it is quite light in weight. Therefore, it becomes possible to save on rafters and buy thinner beams. And this is important in low-budget construction. In order to sheathe a roof with corrugated sheeting, you will need a tool that every owner has:

grinder with a thin disc for metal;
metal scissors;
hammer;
tape measure, marker.

Stages of installation of corrugated roofing

We install sheathing on the roof. To construct it, use any wooden blocks 40/40, 40/50/ or 50/50 cm. They are laid on a vapor barrier layer that covers the insulation.
Laying waterproofing material on the roof. In most cases, roofing felt sheets are laid overlapping. But you can also use a more modern material - vapor-waterproofing membranes. Roofing felt sheets should be secured with SP-1 adhesive tape.
Installation of counter-lattice on the roof. This element of the roofing device provides ventilation space and fixes the waterproofing material. It is important to correctly calculate the step with which the bars will be installed: it must coincide with the recesses between the waves of corrugated sheeting. If the wave height of the roofing material is low, then it is recommended to make the counter-lattice with your own hands very thick, almost continuous. In the places where the valley will be located, we make a continuous sheathing with our own hands.
We design the cornices. To do this, we fill a double layer of boards along their overhang (one on top of the other). The most commonly used lumber is 54 cm thick. We put waterproofing material on them.
After the corrugated sheeting is laid on the roof, we fasten the valley. It is mounted at the joints that form internal corner. There are upper and lower valleys. The principle of fastening both is the same: self-tapping screws with rubberized seals are used, which will help to avoid leaks.

We cover the roof with corrugated sheets

It is recommended to work with gloves, as the edges of this roofing material are sharp and it is quite easy to get injured on them;
You need to walk on the roof in soft shoes and along the depressions of the waves.
We begin to install the corrugated sheeting from the bottom of the roof: the first row of sheets is installed along its entire length.
The material is laid with an overlap of 1-2 waves. The steeper the slope, the smaller the overlap can be. If the slope angle does not exceed 14°, then it is enough to place one sheet on top of another on one wave.
To fix the corrugated sheeting to the counter-lattice, self-tapping screws coated in the same color as the roofing material are used. They must be equipped with sealing washers. The attachment points should be located in the recesses between the waves. Step - 30-40 cm.
The top row of sheets should overlap the bottom row by at least 15 cm.
We install the ridge. It should overlap the corrugated sheet by at least 20 cm. If the slope angle is small, it is recommended to install a seal under the ridge. This will prevent snow from blowing in and water from leaking.
We install cornice strips and abutment strips.

Features of installation of ceramic tiles

A powerful rafter system is required. It is not necessary to buy rafters that are larger in cross-section; it is enough to reduce the distance between them.
Correct installation of the sheathing will affect the evenness of the roofing material. The distance between the bars should correspond to the width of the tile wave. For the sheathing, 40/40 or 50/50 cm timber is used, and for cornices, a 150/25 mm board is used.
There are tiles that have a locking device that allows you to move the material up or down. This is very convenient if whole tiles cannot be laid on the slope. An important rule for laying this material: there should be so many rows on the slope that the tiles do not have to be trimmed.
The quality of installation is checked visually and using the necessary measurements. The tiles should form a straight line along the slope.

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 with a thin layer of 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 covering, but also instead of interfloor coverings, although such houses have a frame type of 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 the smooth surface of the corrugated sheet, sediment is removed 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. For elimination high humidity in the attic and roofing pie is arranged natural ventilation. 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 a high-quality base. 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. To protect 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 of the 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 an 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 such a disadvantage as accumulation large quantity 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 sheets 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 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 at subzero 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 shouldn't slide around 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.

The installation of counter-lattice on metal roofs is 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 be laid on a discharged surface. The optimal pitch of the sheathing elements is 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 lay out the lining 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, you can lay the lining locally, only in places of high humidity, but if the thermal insulation material does not repel water, you will have to cover the entire plane.

Small blocks can be laid on top of the insulating boards. 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.

You can start laying the roof covering itself 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 all roof 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 device 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 with a choice the required material beginners make mistakes quite often.

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 outdoors can be damaged or lose a significant part of their 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.

A roof made of corrugated sheets looks quite attractive and reliably protects the house from bad weather. In this case, corrugated sheets belong to the group budget materials and is quite easy to install. That is, if you take on the roofing work yourself, arranging the roof of your house will not cost much. Let's look at how to cover a roof with corrugated sheeting if there are no plans to involve professional roofers in the work.

What determines the reliability of a roofing covering? Of course, it depends on the properties and qualities of the roofing material. But an equally important factor is how correctly the installation work was performed. Errors during installation can lead to leaks even if the highest quality and most reliable material is used.

By choosing corrugated sheeting as a roofing material, homeowners give preference to a reliable and durable material. But in order for the assembled roofing to properly protect the house, it must be assembled correctly. Let's look at how to properly cover a roof with corrugated sheeting.

Material selection

Even before the start installation work It is necessary to choose the right type of corrugated sheeting that will be laid on the roof. There is material on sale with different base thicknesses and different heights corrugations, and each type of corrugated sheet has the appropriate marking.

Advice! Manufacturers offer corrugated sheets with wave heights from 8 to 158 mm. The choice of the most suitable brand of material is carried out depending on the area and design of the roof. As a rule, for residential buildings for low-rise buildings, corrugated sheets with a corrugation height of 21 to 57 mm will be used.

It is advisable to choose a material with a polymer coating. Firstly, such a profiled sheet looks more attractive and varied. Secondly, the polymer layer additionally protects the steel base from corrosion and increases service life.

Making a roof plan

The first stage of the work is to draw up a detailed roof plan indicating all dimensions and details (pipes, roof windows, superstructures, etc.). It is also necessary to indicate the slopes of the slopes, since the design of the sheathing will depend on this value. Having detailed plan roof, it will be easier to calculate the number of necessary elements - corrugated sheets and accessories.

Advice! If you plan to arrange a simple gable roof with rectangular slopes, then you can make calculations of the amount of materials yourself. If the roof has a complex configuration, it is better to entrust the calculations to specialists.

It is more profitable to order corrugated sheets, necessary accessories and roofing screws from one supplier. The fact is that when purchasing material from one manufacturer, you can count on the fact that all the roofing parts will have the same shade. But when purchasing the main coating and additional accessories in different places this cannot be guaranteed.

How should you handle corrugated sheets?

When planning to cover the roof with corrugated sheeting, you should first of all become familiar with the features of working with this material. It is very important to carefully handle the corrugated sheeting during work so as not to damage the protective coating. Otherwise, pockets of corrosion will appear on the roof covering, and the roof will fail much earlier.

Features of transporting corrugated sheets

To transport the material, packs of corrugated sheets must be laid on a hard and durable surface. Moreover, the dimensions of the body must be equal to or exceed the dimensions of the packs. It is prohibited to transport material by weight.
When transporting sheets, it is not recommended to move at a speed of more than 80 km/h, and sudden braking should be avoided.
Loading and unloading of bundles is usually done using lifting equipment with soft slings. If manual unloading is necessary, a sufficient number of loaders must be used. To carry sheets longer than 1.5 meters, at least two people must be involved.
When carrying sheets, you should grab them by the edges along the long side. The material must be transferred carefully, avoiding kinks and deformations.
It is prohibited to throw corrugated sheets or drag them.
To lift sheets onto the roof, logs should be constructed from two boards. Lift sheets only one at a time.
Roofing work is prohibited in windy weather, as the sheets may be blown off the roof.

How to cut and attach corrugated sheets?

During the installation process, it becomes necessary to trim the corrugated sheets. When performing this work, you should use only those tools that do not heat up and destroy protective coatings. To do this you should use the following tools:

Hacksaw or electric circular saw;
Metal shears - manual or electric;
Jigsaw.

But you cannot use a grinder with an abrasive disc. To attach the corrugated sheeting to the sheathing, you should purchase special roofing screws. These are screws with a drill at the end, equipped with a gasket made of elastic material.

You need to screw in the screw so that the gasket is slightly compressed, but not deformed. At correct installation The self-tapping screw gasket reliably seals the fastening hole.

Advice! In the process of cutting material or screwing in self-tapping screws, metal shavings are formed. It must be carefully swept away immediately with a soft brush, otherwise the shavings will quickly rust and unsightly stains will form on the coating.

Roofing installation

Let's consider how roofing work should be carried out. First you need to prepare the base for laying the corrugated board, and then install the covering.

Assembling the roofing pie

If an uninsulated roof is being installed, then a waterproofing film must be spread along the rafters. The material is laid loosely so that it sag slightly between the rafter legs.

The film sheets are laid so that they form an overlap 15 cm wide. The sheets are fastened together with double-sided tape, and it is convenient to secure them on the rafter legs with the staples of a construction stapler.

Then the counter-lattice is constructed, this is necessary in order to create a ventilation gap between the roofing covering and the waterproofing layer. The counter-lattice is assembled by nailing bars with a cross-section of 50 mm onto the rafter legs.

Next you will need to build the sheathing. The design of the flooring under the corrugated sheet is determined by two parameters - the slope of the slope and the height of the corrugation. The greater the height of the corrugation of the sheet, the stiffer it is, therefore the sheathing can be built with a larger distance between the elements.

The slope of the slope affects the amount of snow that accumulates on the roof. It is clear that the flatter the slopes, the greater the amount of snow that can accumulate on them. Therefore, on slopes with a slight slope, they build sheathing with minimum distance between elements.

Assembling a covering from a corrugated sheet

Sheets are laid on the roof with an overlap, the width of the overlap is determined depending on the slope of the slope.
When forming a side overlap, the installation is carried out so that the top sheet is located on the leeward side. When forming an overlap in a horizontal row, the top sheet (from the ridge) overlapped the edge of the bottom one.
On rectangular slopes, sheets are laid from bottom to top.
When laying the bottom row, a cornice overhang 5-20 cm wide is formed, depending on the height of the corrugated sheeting.

Installation of accessories

Special elements with an overlap 10 cm wide are installed on the ridge. The elements are fastened long screws, screwing them into the crest of the wave.
Internal corners (valleys) are equipped with lower and upper extensions. The lower ones are installed before laying the profiled sheets, the upper ones - after the installation of the coating is completed.
In places near pipes and other vertical superstructures, special connection strips are installed, under which the waterproofing coating and a special element - a covering apron.
At the ends of the roof you need to install special strips. The strips are installed on the eaves before laying the covering, on the gables - after the installation is completed. Gable strips are used to protect the covering from wind loads.

So, you can install a roof covering made of corrugated sheets on your own, without the involvement of professionals. To do this, you will need to study the rules for working with corrugated sheets and installation technology. Video materials describing the most difficult moments of the work will provide significant assistance to beginners.

A material such as corrugated sheeting has long been known to everyone and is used in construction in a variety of roles - it is used to install fences, build garages and sheds, and also cover roofs outbuildings, small houses and even large mansions. Corrugated sheeting is produced in a variety of colors, so you can see houses covered not only with sheets of the same color, but also with a combination of shades. which looks very original.

To know how to properly cover a roof with corrugated sheeting, you need to carefully study the instructions, and then purchase high-quality roofing materials and consumables, and prepare all the necessary tools.

It is very important that you do not need to have special professional skills to cover a roof with this material. The main thing is to follow the technological sequence of work and not make mistakes that could lead to a roof leak, which will require bringing the coating to perfection.

Advantages and disadvantages of corrugated sheeting as a roofing material

Like any roofing material, corrugated sheeting has its pros and cons, which you need to know before purchasing it.

TO positive qualities This material includes the following:

The light weight of the corrugated sheet allows you to easily lift it to a height and, if necessary, level it at the installation site.
Optimal ratio of cost and service life of the material. For high-quality installation, the manufacturer sets a minimum service life 12 ÷ 15 years.
Easy installation - the material is easily overlapped and screwed with special self-tapping screws.
The aesthetics of the covering – corrugated sheeting, thanks to the variety of colors, makes the appearance of the house neat and gives it individuality.
The relief of most sheet models includes special capillary grooves, which are designed to effectively drain water when laying sheets of material overlapping.

Negative qualities corrugated sheets can be called:

High thermal conductivity of the metal. Therefore, corrugated sheeting will not protect attic space from overheating or low temperatures. If this coating is chosen, a good attic floor will be required, which involves additional costs for thermal insulation material and its installation.
In windy weather, when the wind speed is 15 m/s or higher, any metal coating emits ultrasonic vibrations that negatively affect the human psyche. Therefore, in regions with constant windy weather, it is better to give preference to roofing coverings that do not vibrate in the wind.
Low sound insulation. If the roof is not supplied with heat and soundproofing material, the sounds of drops or hailstones falling on the coating will be clearly audible in the house.

Choice corrugated sheeting for roofing

Corrugated sheets can be made from galvanized metal sheets that do not have a color coating. Such sheets are most often used to create temporary or permanent canopies, or to cover outbuildings. It is also often used to fence construction sites. Unpainted corrugated sheeting has a fairly low cost, but is not very suitable for covering residential buildings, since it has low performance characteristics and not very attractive in terms of aesthetics in appearance.

It is very popular, which has a decorative protective coating made of polymer compositions. This material is more durable and can withstand quite serious loads. Of course this is — with proper installation, which largely depends on the angle of the roof slopes.

Several types of corrugated sheeting are produced that have a protective and decorative polymer coating:

Bearing (N) - intended for covering the roof, ceilings and canopies.
Wall ( WITH) - used for the construction of fences, hangars, garages.
Universal (NS) - suitable for roofing, installation of fences, construction of garages, utility facilities, etc.

To cover the roof it is better to use a load-bearing one, but as a last resort You can use any of the above types.

In addition, this material varies in height and number of waves. The height of the wave (corrugation) is indicated by a number that is placed next to the marking of the type of corrugated sheet. For example, several models are presented in table:

Marking	Application	Corrugation height in mm	Metal thickness in mm	Usable width in mm
C10	Wall	10	0,5; 0,6; 0,7	1100
C18	Wall	18	0,5; 0,6; 0,7; 0,8	1000
S21	Wall	21	0,5; 0,6; 0,7; 0,8	1000
	Roofing Wall	35	0,5; 0,6; 0,7; 0,8	1000
C44	Wall	44	0,5; 0,6; 0,7; 0,8; 0,9; 1,0	1000
H60	Roofing	60	0,7; 0,8; 0,9; 1,0	845

A metal sheet of corrugated sheets can have one-sided or two-sided coating, but no matter what it is purchased for, it is better to choose a material that is protected on both sides.

The coating consists of numerous protective layers; the diagram below clearly shows which layers cover the outer and inner sides.

External side of roofing material:

The basis for corrugated sheets is steel sheet.
The steel is coated with a layer of zinc.
Next comes the anti-corrosion coating.
A primer layer is applied to it, which serves as a preparation for the polymer.
Then comes the colored polymer coating.
A protective film (polyurethane) is often applied to the color polymer coating, which will protect it from fading and peeling.
For transportation and storage of corrugated sheeting, it can be additionally covered with a film coating on top, which is removed after installation.

The inner side of the corrugated sheet is covered in the same sequence with exactly the same materials, but on some models there is no colored polymer film on the inside, while on others the sheet is coated equally on both sides. The latter, of course, have a higher cost, but their service life is much longer.

The color range of corrugated sheets is quite varied. According to the most conservative estimates, the color range is represented by no less than 30 shades, so choosing the right one will not be difficult. The color layer can be applied to the surface using powder or using a special polymer coating technology.

If we summarize the selection criteria, we can list the following:

To make sure that the material is of high quality and produced under professional conditions, you should ask the seller for a product certificate. If it is missing, then it is better to contact another store.
The markings of the material are checked, indicating its purpose, thickness and wave height.
The appearance of the material is assessed. It is necessary to pay attention to the evenness of the sheet, the absence of defects in the coloring and protective layer, the same shade of all sheets, and the uniformity of the coating. Appearance can tell a lot about the quality of corrugated sheeting - if upon inspection you find peeling of the coloring layer or burrs on the cuts, then it is better to refuse the purchase.
Another criterion is to check the corrugated sheet for bending - quality material should be elastic, and if you try to bend it, it tends to return to its previous position. In this case, no trace of bending should appear on the coating.
Type of external decorative coating - polymer or powder. The highest quality corrugated sheet coatings are matte and regular polyester and plastisol. Coating details must also be included in the product certificate.
Material price. We must remember that you should not choose the cheapest material - it is unlikely to be of high quality. Moreover, all corrugated sheets have a very affordable price.

When the material is purchased, it is necessary to correctly deliver it to the construction site, and also carefully, without damage, unload it and raise it to a height.

Prices for various types of corrugated sheets

Corrugated sheet

How to avoid damage during transportation and installation of material?

It is important to highlight this issue because damage to the corrugated sheeting during its delivery, unloading and installation will significantly reduce the service life of the future roof.

This material is made from steel sheet, which is given relief by cold rolling in special equipment.

Such material, laid as a roof, is able to withstand high wind and snow loads, but during its transportation, loading and unloading, the covering of the sheets may be subjected to unnecessary mechanical loads, which will lead to its damage. To prevent this from happening, certain rules for transporting, storing, carrying and lifting sheets must be followed.

Transportation of corrugated sheets is carried out by trucks. The sheets must be stacked on a rigid base of the body or on a special metal frame, which is fixed in the body at an angle.

After laying the roofing material in the car, it must be securely secured with slings to avoid the sheets rubbing against each other when the car is moving, as this is what can lead to damage protective coating.
A vehicle transporting corrugated sheets must move at a speed of no more than 80 km/h.
It is very important to ensure that the unloading of the roof covering is carried out with the utmost care. If unloading will be done manually, it is advisable that each sheet is removed from the stack separately, transferred and placed in the place prepared for them. It is best to prepare a flooring of boards and plywood, covered with polyethylene on top.
It is necessary to ensure that none of the sheets are bent during transportation, since it will not be possible to return it to its original state, which means that when covering, gaps will form between the sheets that will disrupt the evenness and integrity of the roof.
To lift corrugated sheeting onto the roof without causing harm to it, you also need to do it correctly:

- to accurately lift the material, you will need logs that are installed at an angle to the roof - these will be a kind of “rails” for the convenience of lifting sheets;

— sheets rise to a height of only one piece at a time;

— the installation of corrugated sheeting on the roof itself can be done by two craftsmen, but lifting the roofing material to a height is best done by three people — this is additional insurance for the integrity of the material and the safety of the work.

Now a few words about how not to damage the corrugated sheet during installation.

The maximum risk of damage to the material occurs if a large area of the roof is covered, since during the installation and fastening process you will have to walk on the already laid roof. Therefore, it is necessary to choose the right shoes for work - they should not only be comfortable, but also have a soft elastic sole that cannot damage the protective layer and will not slip on the roof surface. You can step on the fixed roofing material only between the ribs and only in those places where the guides pass, especially if there is a large step between them.

In order for the installation to proceed accurately, without unnecessary damage to the roofing material, you need to use only high-quality tools. To work you will need:

Screwdriver.
Roulette.
Scissors for cutting metal up to 0.6 mm thick.
Marker for marks.
Level.
Electric drill.
Rubber hammer.
Jigsaw or electric scissors.
A soft brush for sweeping away metal shavings.

It is forbidden to cut corrugated sheets with a grinder. The optimal tool for this is electric scissors.

Features of installing corrugated sheeting as a roof

In order for the installation of roofing material to be successful, it is necessary to take into account some features of the work.

Influence of roof slope on installation

Much of the process of covering with roofing material depends on the slope of the roof. It is very important to correctly position the boards or bars of the sheathing, as well as maintain the required amount of overlap of the corrugated sheets.

If the slope of the slope is 5 ÷ 10 degrees, then the sheathing is made continuous or the slats are nailed at a distance of no more than 5 ÷ 7 mm from each other.

The overlap of the sheets in this case should be horizontal in two waves, and the top row on the bottom row should be at least 300 mm. Moreover with such a small slope of the slope, the gaps between the corrugated sheets are most often filled with sealant, since there is still a risk of water flowing between them, especially in windy weather.

When the slope of the roof slope is 10 ÷ 15 degrees, the distance between the sheathing bars is 400 ÷ 450 mm, and adjacent sheets are laid overlapping on one wave. The top row should overlap the bottom by 200 ÷ 220 mm.
If the roof slope is more than 15 degrees, the sheathing bars are secured on the rafters on distance of 550 ÷ 600 mm. The overlap of sheets laid next to each other is made in one wave, and the top row overlaps the bottom row by 170 ÷ 200 mm.

To make it convenient to mark and fasten the sheathing, cut out the right size, for example, 600 mm, which will help to install the frame under the roofing much faster.

The procedure for securing sheets

It is very important to follow the sequence of laying sheets if the coating consists of two or more horizontal rows of corrugated sheets.

Laying of roofing material starts from the eaves. The edge sheet is set strictly according to the building level, since the correct installation of all other roof elements will depend on its evenness. In addition, the laid sheets are aligned along the lower edge of the overhang - if this method of alignment is excluded, the lower edge of the roof will be uneven.

Upon completion of the installation of the first row, fastening the second begins on the same side of the roof from which the first was mounted. However, some craftsmen also practice a different approach - with sequential laying of the bottom and then the top sheet, or with a “ladder” laying - for example, two sheets below - one on top, that is, the top row is constantly “lagging behind” by 1 sheet.

The best option- if the length of the sheet is sufficient for the entire roof slope

If it is possible to purchase sheets equal to the length of the slope, then you should give preference to this option - this will reduce installation time, and the roof will be more reliably protected from leaks, since there will simply be no horizontal overlaps of the sheets.

Rules for fastening corrugated sheets

This is done using special self-tapping screws equipped with a press washer and a rubber gasket. To make the roof look aesthetically pleasing, the screws are usually matched to the color of the base material.

If the roof is covered with sheets that are continuous along the length of the slope, then the first sheet is temporarily fixed at the top below the roof ridge by 50 mm and at the bottom, on the overhang. The sheet should protrude beyond the edge of the overhang by 40 ÷ 50 mm. Top left open distance, will become a ventilation gap and will later be covered with a ridge element on top.
The second sheet is laid overlapping with the first by one or two waves, depending on the slope, aligned with the overhang of the first sheet and screwed with a self-tapping screw.

Subsequent sheets are laid and aligned along the overhang and fastened together at the crest of the wave. They are fastened from the cornice to the ridge with a screw-in step of 500 mm.

When 3-5 sheets of corrugated sheeting are laid and they are aligned along the edge of the overhang, they are permanently secured to the sheathing. The sheets are attached to the sheathing at the bottom of the wave, immediately after the sheets overlap, and then, passing one wave, along the bottom of the second.
If two or more horizontal rows are laid, then in the strip of their overlap they are secured with self-tapping screws along the bottom of each wave.

If corrugated sheeting with a polymer coating is installed, then after screwing in the screws, it is recommended to remove the resulting metal shavings to avoid damaging the protective coating of the roofing material. It is completely swept away from the coating using a soft brush.

It is also necessary to stipulate the requirement that under no circumstances should corrugated sheeting be secured to the sheathing with nails or rivets, since such fasteners will not hold the sheet when a high wind load occurs. The wind can easily tear off the roof covering, leaving the nails in the sheathing bars.

Installation of additional elements

In addition to corrugated sheets, the roofing structure also contains other elements that help protect the structure from the penetration of precipitation into the attic. It should be noted that the presence of even one formed or unclosed gap in the roof can seriously damage the ceiling, as well as the walls and ceiling of the house.

TO additional elements roofing includes ridge, valleys, lining of pipes passing through the roof, eaves boards and others.

Skate attachment

After completing the installation of the corrugated sheets, at the highest point of the roof, its edges are covered with a ridge.

The ridge is secured with the same screws, through the top of the corrugated sheeting waves, in increments of 200 ÷ 300 mm. To make the fastening reliable, when installing the sheathing, it is necessary to provide two longitudinal boards on both sides of the ridge in advance.

When installing a ridge, it cannot be pressed tightly against the highest point of the roof - there must be a ventilation gap between it and the inner surface of the ridge element.

If a semicircular type of ridge is installed, then special plugs are installed and secured on its end sides.

Since the ridge is assembled from individual elements, they are also overlapped. Simple ridges shaped like an angle should have an overlap of 120 ÷ 150 mm, and semicircular (tiled) ridges should have an overlap of 100 ÷ 120 mm, aligning them along the stiffeners.

Use it in our article.

Finishing the gable part of the roof from corrugated sheets

To eliminate the possibility that the corrugated sheeting will be torn off by the wind from the end side, the gap between the sheets and the sheathing is closed with wind angles or planks, which are placed on one side of the corrugated board, and the other on the first rafter facing the end of the building. The plank is also secured with self-tapping screws in increments of 400 ÷ 500 mm.

Cladding of the end part of the roof. 1 — wind strip, 2 — screws

Since the planks are also made up of individual elements, they are laid with an overlap of 70 ÷ 100 mm.

Attaching the cornice

The cornice is installed before the base roofing material is laid. It plays both a decorative role, covering the side connections of the rafter system, and a functional one, preventing splashes when water flows from the roof into the drain from falling on the wooden parts. In addition, brackets for laying the gutter are attached under the eaves or on top of it.

Most often, drainage brackets are first secured to the sheathing with self-tapping screws at a distance of 500 ÷ 600 mm from each other. They are lowered below the sheathing by 100 ÷ 150 mm.
Then the gutter is installed on the brackets.
After this, the cornice strip is installed and nailed or screwed to the bottom board of the sheathing.

The corrugated sheets are laid on top of the eaves strip, and must be aligned in such a way that water flowing from them directly falls into the fixed gutter

Installation of the valley

Installation of a valley is not required for every roof, but only where it has a complex configuration with profile breaks. If there is a junction of two planes facing downwards, then you cannot do without installing this element.

The endow consists of two parts - internal and external.

The inner part of the valley is laid before the roofing is laid. It is attached to the junction of two roof planes and fixed to the sheathing with roofing screws in increments of 350÷500 mm. The individual parts of the long valley are laid, starting from the cornice and rising to the ridge, with an overlap of 150 ÷ 200 mm.

After the corrugated sheets have been laid (with a shift by inner part valleys by 80 ÷ 100 mm), a layer of porous sealant is laid between them and the inner part of the valley. This material will prevent leakage during rain. Then the corrugated sheeting through the bottom of the waves in increments of 400 ÷ 500 mm, together with the lower part of the valley, is screwed to the sheathing with self-tapping screws.
After this, silicone sealant is applied to the edges of the corrugated sheets, and the outer part of the valley is laid on it. Just like the inner one, it is composite, so its parts are overlapped by 100 mm, starting installation from the cornice and coating the joints with sealant.

After this, the outer part of the valley is screwed with self-tapping screws to the corrugated sheet.

Fastening snow guard

Snow guard- this is an element that will prevent snow from suddenly falling off the roof in the spring, delaying it and giving it time to melt and drain with water or evaporate.

Snow guards There are two types - these are peculiar strips in the form of corners, scrolling in a checkerboard pattern, or horizontal tubular barriers installed in special brackets.

The brackets are attached to the surface of the corrugated sheet at a distance of 900 ÷ 1000 mm. Then special tubes with threads along the edges are inserted into the holes in them, onto which, after installation, metal plugs are screwed.

Both brackets and strips snow guards are attached through corrugated sheeting to the sheathing. When fastening the planks, they are screwed through the top of the wave, so gaps are formed between the plank and the corrugated sheet, through which melt water will flow out.

Wall profile covering the joint between the wall and the corrugated sheet

If a corrugated roof is adjacent to a wall, then the joint between them must be closed to avoid leakage. For this purpose, there is a special shaped strip - a wall profile, which is mounted on the wall using anchor fasteners, and on the metal profile - with self-tapping screws screwed into the crest of the wave.

Silicone sealant can be used to seal the joint between the plank and the wall. In addition, it is advisable to make a groove in the wall to hide the upper curved edge of this profile in it. After installation, the groove can be sealed, for example, with cement mortar or tile adhesive for exterior use.

Seals for corrugated sheets

Seals are used in roofing work to close gaps at the junctions of the covering with the wall, in places of “fractures” of hipped roofs and under the ridge.

Seals usually have an adhesive layer on one side, covered with parchment, which is removed before installation and the material is glued in the right place.

Designing the passage of a pipe through corrugated sheeting

If the chimney pipe of a stove or fireplace passes through the corrugated sheet covering, or ventilation duct, then you will have to work on it. But before do work By exterior decoration joints, must be installed around chimney internal apron, which mounted before laying on the corrugated sheeting.

An apron is installed around the pipe from separate metal adjacent profiles. On the walls of the chimney, using a marker, mark a line along which a groove will be punched to bend the upper edge of the adjacent profiles into it. Then it must be thoroughly cleaned of dust and washed with water.

After this, the so-called tie - stripe metal sheet with flanges, which are mounted from the pipe to the cornice. The tie is necessary to drain water accumulating behind the pipe during rain.

After this, the lower part of the apron must be secured for sealant, on sheathing and lay a tie on the sides of the pipe, and install the upper edge in the groove, also on the sealant. When installing parts of the adjacent strip, you must ensure that they overlap each other by 150 mm.

After interior work will be completed, installation of corrugated sheets is underway. When the roofing material is laid around the chimney pipe, the outer flashing strips are installed, which are secured to the pipe and to the ridges of the corrugated sheeting on the roof.

General sequence of roof covering with corrugated sheeting

So, knowing how to install all the additional elements and the corrugated sheeting itself, you can consider the sequence of work on covering the roof with this roofing material.

The first step is to cover the rafter system. It is laid from the eaves, overlapping the slope horizontally by 100 ÷ 150 mm. The film is secured using a stapler with staples on the rafter legs.
Counter-lattice bars are nailed to the rafters on top of the film, which will create the necessary ventilation gap between the film and the roofing material. The size of the bars should be 400 × 500 mm, that is, the ventilation gap will be 400 mm.
The sheathing of the slopes is arranged perpendicular to the counter-lattice. Here you need to provide additional ridge boards - they are placed on both sides of the roof ridge. Also, additional boards or bars are mounted around the chimney pipe and at the joints of the roof planes to secure the valley (inward corner) or ridge element (outward corner).
Next, wind boards are fixed to the gable sides of the roof.
Then the brackets for the drain gutter are attached to the bottom board of the sheathing, and the gutter itself is laid.
The cornice strip is nailed to the outer board of the sheathing.
The next step is to secure the inner part of the valley, if it is necessary in the roof structure.
Then you can proceed to waterproofing the chimney pipe. A tie is laid along its edges, going to the cornice - it is attached on top of the cornice strip. Next, install and sealed elements of the internal apron adjacent to the pipe.
Having dealt with the internal additional elements that should be under the roofing material, we proceed to the installation of corrugated sheets. To pass the pipe in one or two sheets, an opening of the required size is measured and cut using electric scissors. The edges of the corrugated sheeting should cover parts of the apron attached to the sheathing and come close to the pipe. It is possible to leave a gap of 50 ÷ 70 mm.
Next, at the junctions of the two roof sections, the outer part of the valley is fixed.
After this, they are fixed at the highest point of the roof metal elements skate.
The last step is to attach the windproof corner.

So, as you can see, there is nothing supernatural in laying such a roof. Having studied the sequence of work and the technology for their execution, enlisted the assistance of reliable assistants, acquired the necessary material, and prepared the tools, you can safely begin covering the roof with corrugated sheets on your own.

And at the end of the publication - a useful video with the intricacies of the process of installing a roof from corrugated sheets.

Video: important nuances when laying corrugated sheets as a roof

For a comfortable stay in the house, it is important to make a high-quality and reliable roof with good coverage. Today, one of the best roofing coverings is corrugated sheeting. It reliably protects the roof from leaks, collapses, and ensures tightness in the under-roof space. And the most important thing is that it is environmentally friendly. However, the correctness of installation work plays an important role. Only in this case will a roof made of corrugated sheets serve you for many years. This article will provide detailed instructions on how to cover a roof with corrugated sheets with your own hands, as well as video and photo materials.

As mentioned at the beginning of this article, corrugated sheeting has many advantages, which makes it an indispensable roofing material. Others can also be noted positive sides of this material:

The profiled sheet structure has a high load-bearing capacity.
The lightness of the material greatly simplifies working with it.
After laying the sheets, no joints are formed on the roof. This ensures the tightness of the coating.
Due to the special polymer coating, the material does not corrode, and as a result its service life increases.

Note! Laying corrugated sheets on the roof should not cause any special problems and at first glance everything may seem extremely simple. However, during installation work, no defects or inaccuracies should be allowed.

To transport corrugated sheets, specialized transport is required. Sheets must be laid horizontally only. It is also recommended to tighten them with slings, first placing them on a hard and flat surface. Special requirements are also imposed on the driver. It is necessary to drive the car without sudden braking or turning. Otherwise, this may lead to damage to the material on the way to its destination.

In addition, it is important to ensure high-quality storage of corrugated sheets. The base must also be level and solid. If the time has come to lift the sheets onto the roof, then this should be done using logs. Their length should correspond to the height of the roof from the ground. You can lift several sheets at once.

Note! If the weather is windy, then you cannot lift the sheets onto the roof.

Today the following types of corrugated sheets are known:

Brand C. The canvas has a sinusoidal or trapezoidal shape. If you decide to do decorative finishing roofs, then this option is just right.
Brand RS. Used both for installation on roofs and walls.
Brand N. This model is equipped with additional stiffening ribs.

It is very important to know what slope angle is allowed for a particular product. Each manufacturer develops individual instructions. Therefore, when purchasing, you should ask for instructions, which are called “Installation of roofing from corrugated sheets instructions.” Based on this, it is important to take into account the future slope of the roof. Once you know the slope, it will help you make calculations on how much overlap each sheet should have. Below are several calculation options:

A slope of less than 15° will provide an overlap of 200 mm or more.
A slope of 15 to 30° will provide 150–200 mm and no more.
If the slope is less than 12° or the roof is flat, then each seam and joint should be carefully sealed. Otherwise, the roof will not cope with its functional responsibilities.

Calculation

Before buying material, it is important to calculate the number of sheets. To do this, you need information regarding the width and length of the slope, as well as what brand of corrugated sheeting will be used. To calculate, you can use a special program or draw a roof on a reduced scale. This will help you perform almost accurate calculations. One should not forget the fact that the sheets are laid overlapping. Depending on the angle of the slope and the brand of corrugated sheet, the overlap will differ. This way you will find out how much of the length and width of the sheet will be “eaten up”. Moreover, do not forget to add an overhang to the cornice, which can be up to 30 cm.

Note! It is necessary to purchase in advance all additional elements, for example, valleys and strips. They will be fixed in places where the slope has a certain bend, at the end, on the ridge and in other similar places.

Each sheet is attached to the sheathing with self-tapping screws. This is the only way to ensure reliable coverage. There are special requirements for fasteners. Thus, they must be made of galvanized steel. In this case, each screw must have a special gasket made of elastomer or neopreon rubber. This rubber will ensure a tight connection between the self-tapping screw and the corrugated sheet. Thanks to this, moisture will not penetrate into the wooden elements roof, which means rotting of the supporting structure will be prevented.

The following technical parameters are required for self-tapping screws:

Sizes 4.8x32mm, 4.8x60mm and 4.8x80mm.
The presence on the cap of a protective and decorative coating in the form powder paint and a layer thickness of 50 microns.
The surface is treated with electrolytic galvanizing with a thickness of 12 microns.
The presence of a protective elastomer gasket for profiled sheets and for valleys made of aluminum sheet.
Self-tapping screws must contain stabilizers that do not allow negative impact ultraviolet rays.

Note! When buying covering sheets, purchase one color and screws. This will add aesthetics to the entire roof.

It is also worth mentioning the special seals, which are made of foamed polyethylene and polyurethane foam. The sealant is placed between the sheet and the sheathing. It is believed that a strip seal with a rectangular cross-section is universal. But it will be much more effective to use those seals that repeat the shape of the corrugated sheet.

The presence of a seal reduces noise metal roof, increases the quality of thermal insulation of the cake and increases its service life. Special glue is applied to the seal strips on both sides, so its installation is greatly simplified. It is very important that the seal has perforations for ventilation in the under-roof space.

Note! The presence of a seal eliminates large gaps formed as a result of the sheet adhering to the roofing structure. Birds, insects and cold air often get into these gaps. The special properties of the sealant material make it bioresistant and moisture resistant.

Immediately before the installation of the profiled sheets, hydro- and vapor barriers are laid. To make a vapor barrier, you can purchase a special film or roofing felt, as a last resort. The vapor barrier is attached to the sheathing. It is recommended to lay it from the bottom edge of the roof. Thanks to this, each subsequent layer will be lower and moisture will not penetrate the wood.

Note! If the grade of corrugated sheeting used is S-8, S-10 or S-20 with a thickness of up to 0.5 mm, then the sheathing must be continuous. In all other cases, the sheathing pitch is selected individually depending on the characteristics of the roof.

It is also worth mentioning the insulation layer, which will retain 25% of the heat. Those roofs on which corrugated sheeting is mounted are advised to use matte insulation. The result will be a roofing pie:

A layer of vapor barrier film.
Insulation.
The final waterproofing layer.

When making this “pie” you should organize a “cold triangle”. Its presence will ensure good passage warm and cold air through cracks in the eaves and ridge. This will create natural ventilation, which will prevent the formation of condensation.

The laid waterproofing layer will retain all the properties of the insulation. Otherwise, with strong moisture, an ice crust and dampness will form on the roof and, as a result, the process of wood rotting is inevitable. For this reason, you should choose the material for each layer of the cake carefully. It must be of high quality.

To ensure that all work goes smoothly and without failures, make sure you have the necessary tools in advance:

rope;
roulette;
screwdriver;
hammer;
metal scissors;
construction gun with sealant;
marker or pencils;
construction stapler;
drill.

Note! Cutting of profiled sheets is carried out cold, since the polymer coating is not resistant to high temperatures. It is better to use metal scissors or a jigsaw. In this case, treat each cut with an anti-corrosion primer. This will increase the service life of the coating.

Laying scheme

The sheets are laid overlapping on the lower edge of the roof, and the screws are twisted into a wave bend. Compliance with a specific installation diagram will allow you to create reliable roof. First of all, under the valley strip at the level of the sheathing, a dense flooring is made from the valley at a distance of 60 cm on both sides. The bottom boards of the valley are mounted with an overlap of 20 cm. The bottom plank is secured at the edges with nails, and the final fastening is carried out together with the roof. If the slope is gentle, then sealing mastics should be used here.

Under the ridge, the bottom strip is inserted 25 cm. A profiled or universal seal should be laid between the profiled sheet and it. As for the installation of the end boards, it is better to fasten them above the sheathing, then it will be possible to fasten the end strip. This structure will be called a wind corner. After this, the cornice strip and filing with corrugated sheeting are installed. It is mounted below the profiled sheet.

The installation of sheets will completely depend on the type of roof. For example, if the slope is gentle, then longitudinal sealing gasket and overlaps one wave. If the slope is steep, there is no need to use a compactor.

Note! If you have a hip roof, then installation begins with the hip itself. A cord is stretched along the cornice and each subsequent sheet is aligned along it. It is unacceptable to do this at the end of the slope.

There are two methods for laying corrugated sheets on the roof:

Vertical direction. In this case, the first sheet with temporary fastening is laid below. The sheet is mounted in the same way on the second row. Next, two sheets are placed side by side to form a square of 4 sheets. More sheets are placed on top of it, and so on. This method is especially popular if the roof is equipped with a drainage groove.
Another method of laying sheets is to make a block of 3 sheets. First of all, 2 sheets are laid on the first row. They are securely fastened to each other, and the 3rd sheet of the 2nd row is joined last. This block can be secured while aligning it with the cornice.

Note! No matter what method of laying sheets you choose, it is important to pay special attention to each joining point. The reliability and quality of the roofing will depend on this.

Each sheet of corrugated board will require 7-8 screws. They need to be twisted into the lower wave. As mentioned above, the material is mounted with an overlap both vertically and horizontally. The overlap will depend on the angle of the slope. From what place should the sheets be laid? If the roof slope has a rectangular shape, then it is possible from any end along the eaves line. If the shape is trapezoidal or triangle, then first of all it is important to think through the laying scheme. However, the first sheet is mounted in the center, and then the sheets are laid in both directions according to symmetry.

If a drainage system is planned, then the corrugated sheeting is mounted along the eaves with an overhang of 60 cm. If there is no overhang, then the overhang is made according to the grade of material:

NS-20 – up to 10 cm.
S-44 and NS-35 – up to 30 cm.

So, align the first sheet along the eaves and end of the roof. After this, it is secured with a self-tapping screw at the top. Each subsequent sheet is fastened along the longitudinal side of the sheet. It is pre-aligned along the cornice, and then fastened to the sheathing. According to this scheme, row after row is assembled.

The material is installed in such a way that a frontal overhang 7 cm wide is formed. At the eaves, the sheet is fixed at a distance of 30–40 cm, and the remaining rows of screws can be staggered in increments of 1 m. In the area near the pediment, the screws are tightened in increments of 500–600 mm . On a longitudinal overlap, the fasteners are located at the top of the profile at a distance of 300 to 500 mm.

The next step is to install the ridge and end strip. According to the standard, the end strip is 2 m long. If the length is not enough, then it is overlapped. The fastening of the plank is carried out from the roof overhang to the ridge.

Note! When installing the end strip, make sure that it overlaps at least one wave of the sheet. The screws are screwed in 1 m increments to the corrugated sheet.

After this, all that remains is to make the last roofing unit - the ridge. Only smooth ridge elements should be used here. A number of experts recommend laying a special ventilated seal between them. If the sheets are corrugated, then a ridge seal is used.

At the conclusion of the roofing work, an abutment strip is installed with corrugated sheets. They are an element 2 m long. They are laid with an overlap of up to 20 cm. The fasteners are made with self-tapping screws from the side of the roofing sheets. Mounting pitch 40 cm.

Note! When arranging connections between the roof and the wall, you should use a special sealant. It is laid between the joint strip and the upper edge of the corrugated sheet.

To prevent snow and rain from getting into the cracks, a longitudinal seal is also laid at the side junction. If the roof is steep, then such a seal is not needed.

In conclusion, let's summarize:

It is very important to be careful when transporting your roofing material.
The sharp edges of the sheets can cut your hands, so you need to wear protective gloves when working.
Three people are required to lift the sheets onto the roof. In this case, two guides are used.
The installer must wear soft-soled shoes to avoid scratching the surface of the sheets.
If the surface is accidentally scratched, these areas must be treated with paint for polymer coatings.
You can only step on the sheets in the sheathing areas.

So, we are convinced that corrugated sheeting is an excellent material for roofing. However, it is important to remember that it can serve for a long time and with high quality only if the installation and calculation technology is followed. If you have your own experience in this construction field, then write comments at the end of this article. It will be equally useful to pay attention to the photos below. On them you will be able to examine the intricacies of the work of covering the roof with corrugated sheets.