How to properly cover a roof with corrugated sheeting: we cover the roof with corrugated sheeting with our own hands. How to cover a roof with corrugated sheets with your own hands How to make a roof with corrugated sheets

Profiled sheets (corrugated sheets) as roof coverings are mainly used in the construction of industrial, service or storage buildings. However, it is increasingly used in private residential construction, especially when using unusual architectural solutions. Having chosen this material for the roof, it is worth finding out its main characteristics and how to cover the roof with corrugated sheeting.

Profiled sheets are produced by cold rolling from high quality galvanized steel sheets. During the deformation process, the workpiece is given a trapezoidal profile. During production, it may be coated with multiple layers of protection to enhance durability. At the initial stage, the workpiece is treated with an anti-corrosion compound, then the upper part of the sheet is coated with a mixture of polymers, and the lower part with a special varnish.

Characteristics of corrugated sheets

The basis for the profiled sheet is a sheet with a thickness of 0.4 to 1.5 mm, treated with a special coating. The products are available in a very wide range when it comes to corrugation heights and colors. According to its purpose, profiled sheets are divided into:

wall (facade cladding, installation of fences);
roofing (roof installation);
structural/load-bearing (for flat roofing, permanent formwork);
special (perforated, transparent).

True, such a division is quite arbitrary - if necessary, facades are finished with corrugated roofing sheets and vice versa. It all depends on the architectural and structural features of the building.

Corrugated sheets are also divided by type of finish. This:

Galvanized corrugated sheet - used on objects where aesthetics do not matter.
Profiled sheets coated with aluzinc are resistant to atmospheric factors and temperature changes, recommended for roofing industrial and warehouse premises.
Profiled sheet coated with polyester - used in residential construction, resistant to atmospheric influences, as well as corrosion. The metal base in this case is covered with a layer of zinc, a passivation layer, a primer layer and, finally, a polymer coating with a thickness of 15 to 40 microns. The last layer usually consists of polyester, plastisol or purlar.

Profiled sheets are further divided in terms of profile height. The following profiled sheets are used in roofing work: T8, T14, T18,T20, T35, T35, T50, T55. The number in this case indicates the profile height. Profiled sheet with a height of 35 mm is ideal for medium-sized residential buildings, therefore it is the most popular.

For buildings where roofs with a large area are planned (for example, warehouses, production workshops, apartment buildings, markets, etc.), it is recommended to use sheets with a profile height of 80 to 200 mm.

We are talking about the use of so-called structural profiled sheets. The high height of their profile provides the roof with the necessary rigidity and timely drainage of rainwater and snow from the roof slope.

Corrugated sheet overlap and roof angle

Before covering the roof with corrugated sheeting, measure the slope of the roof. Since the sheets are mounted overlapping, this will help to calculate how far the sheet covers the adjacent one. Usually they focus on the following ratios:

if the roof is inclined less than 15°, the overlap of the sheets should be at least 20 cm;
if the angle of inclination is 15° -30° – from 15 to 20 cm;
a roof slope above 30° allows you to reduce the overlap to 10-15 cm;

An angle of inclination that is less than 12° requires additional work to seal the joint using silicone sealant, an overlap of 20 cm.

Calculation of roofing material

When purchasing corrugated sheeting, you should distinguish between the concepts of full quadrature and effective. Complete shows the area of all ordered sheets that would be located next to each other. And the effective one represents the area of the material, as if already laid on the roof, taking into account the fact that the sheets are laid overlapping, and is less than the full one. These values are formed by multiplying the length of the sheet (can be up to 12 m) by the full or effective width, respectively.

Before ordering material, you need to calculate the required amount of roofing, the length of ridges, valleys, etc. And if it is quite simple to calculate the number of sheets of corrugated sheets for a single- or double-slope roof (from each sheet we subtract the size by which we cover the previous sheet, and divide the width of the roof by the resulting value), then a specialist should be involved in calculating the roofing material for complex roofs. The easiest option is to give the supplier the dimensions of the roof (preferably in the form of a sketch indicating the dimensions). Companies supplying corrugated sheets, as a rule, offer their clients to perform the necessary calculations using special programs, after which they provide a list of specific materials, fasteners and elements.

How to properly cover a roof with corrugated sheets with your own hands - where to start

Technically, making a roof from corrugated sheets is a simple and intuitive job, at least for people who have basic knowledge of construction as such. Therefore, covering the roof with corrugated sheets with your own hands is not a problem, but in order to do it correctly, you should learn the basic principles of performing the work and get an idea of the subject of the work.

Roofing installation from corrugated sheets

A corrugated roofing is a kind of pie consisting of various elements placed accordingly. The roof of a residential building is presented as an example. If we look at it in cross-section, then the roof elements go in the following sequence (starting from the bottom):

sheathing for insulation - nailed to the rafters from below, supports the insulation;
vapor barrier – protects the insulation from condensation;
insulation and rafters - sheets of heat-insulating material located between the rafters;
hydrobarrier – protects the insulating layer from moisture (an air gap is required between it and the insulation);
counter-lattice – provides ventilation of roofing materials;
sheathing - the basis for the covering;
profiled sheet.

The roof also includes various additional elements - ridge, valley, snow retainer, end strip, etc.

Tools and material for installing corrugated sheets

In order to properly cover the roof with corrugated sheets with your own hands, as for any other work, it is important to prepare working tools. You will need:

measuring and control instruments - tape measure, square, level;
power tools – drill, screwdriver, electric scissors;
tools are common at any construction site - a hammer, a hacksaw for wood, scissors for metal.

It is also necessary to prepare a sufficient number of special screws with a sealing washer for attaching corrugated sheets, at least 8 pieces per square meter.

It should be remembered that you cannot use abrasive wheels to cut corrugated sheets.

Installation - how to cover a roof with corrugated sheets with your own hands

So, after everything is prepared, we begin to install the roof. On the warm side of the roof, a vapor barrier is secured with a stapler and a sheathing for insulation is installed. Then the insulation is laid (tightly, without tears). After the insulation has been laid, waterproofing is laid, secured with a stapler, but it should be remembered that its overlap at the ridge is unacceptable. Then comes the turn of the counter-lattice.

Installation of counter-lattice

The task of the counter-lattice, or false beam as it is also called, is to provide ventilation inside the roofing “pie”. For the counter-lattice, take a beam with a cross-section of 25 x 40 mm (40 x 40 mm) and attach it along the rafters in increments of 60 cm. Self-tapping screws are usually used as fasteners.

A sheathing is mounted on top of the counter-lattice; the pitch between its beams depends on the angle of inclination of the roof. The cross-section of the timber for the sheathing depends on the distance between the rafters; usually take 30 x 40 mm for a distance of up to 70 cm and 40 x 60 mm for a distance of up to 12 cm.

After this, along the lower edge of the roof, to the lower beam of the sheathing, a cornice strip is attached with self-tapping screws. Next, they begin laying the corrugated board. Installation of sheets can begin either on the right side of the roof or on the left. In order to avoid mistakes, you can attach the corrugated sheet as follows.

First, the first sheet is installed, aligned along the cornice strip (with a 50 mm overlap on the cornice) and secured with one self-tapping screw at the ridge. Similarly, on one self-tapping screw, you need to overlap 4 more sheets, aligning them along the bottom edge. After the sheets are aligned, they are finally secured. Self-tapping screws are screwed into the bottom wave of the sheet, into every second wave, along the crest of the joint every 50 cm and into each sheathing board at the end.

Installation of end strips

The end strip performs a decorative function and also protects the structure from the wind. It is fastened with an overlap (100 mm), starting from the overhang towards the ridge. Self-tapping screws are screwed into the ridge of the joint between the plank and the corrugated sheet and into the end board, after 350 mm, the excess is cut off.

Installation of the junction strip

The junction strips are mounted at the junction of the corrugated sheeting with the vertical elements on the roof (chimney wall, wall of the floor above, etc.). A sealant is glued between the plank and the corrugated sheet, then the planks are fastened with self-tapping screws, in increments of 200 - 300 mm; if the length of the junction is more than one plank, then they are laid with an overlap (100 mm).

That’s probably all about how to cover a roof with corrugated sheets with your own hands, and it turns out that it’s not at all difficult.

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 what strengths and weaknesses a particular 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 ordinary mineral wool boards. 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 the 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.

Wood is a natural material, so it will deteriorate 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. The bath method requires a lot of protective substance, but after saturating 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 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. The minimum slope for metal roofs is indeed 12-14 degrees, but for some reason I have not 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, acquire all the 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 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 the 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 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 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.

How to properly cover a roof with corrugated sheeting: finished roof

Corrugated roofing has a whole range of significant advantages:

durability;
reliability;
strength;
resistance to all types of atmospheric influences;
very elegant and attractive appearance.

In addition, corrugated sheeting is quite easy to use and unpretentious to small flaws in the work, typical for beginners or inexperienced installers.

Selection of materials and calculation of their required quantity

A do-it-yourself roof made of corrugated sheets can be made from both roofing and wall corrugated sheeting. These two types differ in the thickness of the steel sheet and the profile shape. The main external difference between wall corrugated sheets is the presence of one or more additional longitudinal grooves, which increase the rigidity of the material.

Which corrugated sheet to choose

For small roofs, corrugated wall sheeting is sufficient. When covering large surfaces or with sparse sheathing, it is better to use roofing corrugated sheeting (it is more durable, the profile height is from 20 mm), although this increases the cost of the roof. The use of a more durable coating makes sense for peaked roofs that are subject to increased wind loads.

It is best if the length of the sheet is equal to or greater than the length of the roof slope. This will greatly reduce the number of joints, save on fasteners, and reduce labor intensity and time spent on work.

How to calculate the amount of material needed

The cost of a metal roof is quite high, therefore, even at the preparation stage, you should calculate as accurately as possible the required quantity of all its components. As practice shows, the material must be taken with a small reserve, since the exact volume of waste is almost impossible to determine in advance.

Calculation of sheets

The calculation of the required number of sheets to cover the roof is carried out individually in each case. In this case, the overlap area and the useful area of the sheet are taken into account. The most accurate method is considered to be a graphical calculation method, in which a plan of the roof slopes is made on graph paper and all the sheets are marked on it.

When the slope of the roof plane is less than 15 degrees, the sheets must overlap by more than 20 cm;
A slope of 15 to 30 degrees corresponds to an overlap of at least 15 cm;
On peaked roofs with a slope angle of more than 30 degrees - 10-15 cm.

Overlapping areas of corrugated roofs on almost horizontal roofs, with a slope slope of less than 12 degrees, must be coated with a special bitumen, silicone or polyurethane sealant from brands such as Favorite, Bau Master, Macroflex, Liquid Nails. The fact is that water and melted snow are poorly drained from a sloping roof and in this case only a sealant can protect the wooden sheathing from excess moisture.

Fastener selection

To install corrugated sheets, special hardware is used: self-tapping screws and self-tapping screws. The latter are used much less frequently, since they require pre-drilling holes in the sheet. Self-tapping screws for metal have a drill at the end. Thanks to this design, they themselves drill a hole in the metal and then, using threads, go deeper into the wood.

To attach the decking, the diameter of the hardware must be in the range of 4.8 - 6.3 mm. The length is chosen so that the screw in no case goes through the sheathing board. Otherwise, the waterproofing membrane will instantly burst in this place.

The hardware intended for fastening the corrugated sheeting is painted the same color as the roof, so it does not stand out at all against its background. The self-tapping screws are supplied with sealing neoprene washers. They are necessary for the protection and durability of the roof: without them, the wood under the fastening will quickly get wet and rot.

The hexagonal head is oriented to the same screwdriver attachment. In order not to push through the metal, its lower plane has an enlarged area.

The screw head is usually made in the shape of a cone, which does not press, but pushes through the metal and greatly reduces the area of the holding contact. When using screws, in addition to a sealing rubber or polymer gasket, it is recommended to additionally protect the hole with silicone or sealant.

We will tell you how to attach corrugated sheeting to the roof using self-tapping screws in the photos you see, using the example of a sheet with a rectangular profile. On average, on a flat section of a flat roof, from 6 to 10 hardware are used. This amount varies depending on the design of the sheathing, the angle of inclination and the location of the corrugated sheet: in the outermost sides, self-tapping screws are installed in the two outer recesses of the wave. In the middle part of the roof they are used in a row. The installation pitch of self-tapping screws is at least 500 mm. After receiving the required quantity, the number of hardware must be increased by 1.15 times.

Laying corrugated sheets

There are many variations in laying corrugated sheets. But the most common and reliable method is layer-by-layer horizontal. Let's look at how to cover a roof with corrugated sheets with our own hands using the example of the simplest and most accessible method.

Operating procedure

We check the horizontal level of the lower cut of the sheathing along the eaves strip with a level. If it is tilted towards the horizon, when laying the first sheet we make a small release below the bar. There must be a ventilation gap between the strip and the vapor barrier. Without it, the sheathing will very quickly gain moisture and begin to rot.

To understand how to cover a roof with corrugated sheets with your own hands correctly, you should take into account that work on a single-pitched or double-pitched roof begins from any edge, and a complex hip roof is covered from the center of the hip.
The first two or three sheets are pre-attached roughly (the screw is not driven in completely). And only after checking the horizontal lines are finally fixed. Each subsequent profiled sheet overlaps the previous one. The higher rows, like scales, overlap the top of the lower rows.
If it is not possible to fit the edges of the topmost sheets to the ridge, they are cut in place using electric scissors or hand tools. Please note that you cannot use an angle grinder for this purpose! It greatly overheats the metal and destroys the protective coating at a distance of several centimeters from the cutting site.
When using screwdrivers, it is important to set the correct screw force. It is necessary to ensure a tight tightening, but to avoid pushing through the metal profiled sheet. The screwdriver head should not protrude beyond the protective plane of the screw. Otherwise, the coating that protects the metal may be damaged during operation. Rust streaks will very quickly appear in this place, and the corrugated sheet will begin to corona and collapse.
The junction of the roof slopes is covered with a special ridge strip to match the color of the corrugated sheeting. For peaked roofs, a ventilated fastening design can be recommended. But its installation requires certain knowledge, so the strip can simply be secured through a seal on top of the corrugated sheet. Ventilation will be provided by the design of the profiled sheet.
The final stage will be tapping the end strips. Typically, these products have a two-meter length and a shelf width sufficient to cover two waves of corrugated sheeting. The plank is attached to the overlap of the roof, also covering the end wooden board. At this point, do-it-yourself roofing with corrugated sheets can be considered complete.

Corrugated roofing safety instructions

As with any work at height, safety on the roof is ensured by safety ropes and anchorages.
You should wear soft shoes with rubber soles on your feet.
It is strictly forbidden to carry out roofing work on a windy day! Corrugated sheeting can “catch” the wind and blow away everything in its path.
The easiest and safest way to supply corrugated sheeting to the roof from the ground is along inclined boards using a winch.
On a hot sunny day, the metal heats up to 80-90 degrees or more. Therefore, it is better to wear durable gloves when working on the roof. In addition, the cut edge of the metal is dangerous, and mittens protect your hands well from cuts.
When walking, do not step on the ridges of the corrugated sheet. They can become crushed under the weight of a person, causing you to lose your balance.

Bottom line

Covering a roof with corrugated sheets with your own hands is quite easy and quite affordable for each of us. With careful preparation and a responsible approach to this work, a roof made of corrugated sheets with your own hands will last no less than as a result of the work of professional craftsmen.

Corrugated sheeting is a fairly popular material that has been used in the construction industry for many decades. It is easy to install, light in weight and at the same time serves for a long time, which attracts craftsmen and novice builders. But many may not know how to properly lay corrugated sheets on the roof. This is quite a responsible process, but nothing is impossible.

The profiled sheet is made of thin metal that is protected from corrosion and coated with various compounds that protect it from exposure to atmospheric conditions. The grooves that are formed on it thanks to cold rolling technology give the sheet increased strength, and therefore resistance to mechanical loads.

Corrugated roofs - photo

Corrugated sheet or corrugated sheet is highly reliable and easy to install; it is ideal for covering the roofs of various buildings - industrial, warehouse, residential, etc. This is a durable material that can last a very long time if used correctly and was selected taking into account various features the region where the building is located and operating conditions.

On a note! Corrugated sheeting can also be used for other purposes - cladding the walls of a building, creating fences, and for formwork during foundation construction. But in the above cases, other types of material are usually used - not those used to create the roof.

The material also has a low price, which makes it possible to purchase it even for those who have a limited construction budget. And even the cheapest version of corrugated sheeting will clearly please a novice builder with its quality.

Features of choice

The roof structure made of profiled sheets, in general terms, includes several elements. This is the sheathing, heat and waterproofing layers, and the corrugated sheeting itself. And the material, due to its light weight, is excellent for laying on non-reinforced structures. It is suitable for building a roof whose slopes will be at least 12 degrees.

On a note! The slope can be made with a smaller angle, but then all joints between individual sheets of corrugated sheets will have to be additionally sealed.

When choosing corrugated sheeting, you need to pay attention to its thickness, as well as the height of the ridge. The thickness should be at least 0.8 mm, and the height of the corrugation should be from 21 to 25 mm. It is worth stopping at brands such as NS20, NS35 or C44. But for roofs with slopes of only 5-8 degrees, corrugated sheet H75 or H60 is suitable. It is best to choose sheet models with a trapezoidal or wave-shaped corrugation.

Roofing sheet - wave

Advice! The greater the roof slope angle, the “lower” grade of corrugated sheeting is purchased.

By the way, when choosing a material, it is worth remembering that the stronger it is, the smaller the pitch of the sheathing will be. This means that you need to calculate all cost options and choose the optimal one in specific conditions. After all, you can also save on purchasing materials for lathing. The main thing is that the savings are reasonable.

When calculating the amount of material, the dimensions of the sheets and the need to form overlaps are taken into account. Thus, the length of one profiled sheet can be 12 m, width – up to 1250 mm. When purchasing material for cladding small roofs, it is recommended to buy sheets of such a size that they completely cover part of the slope from top to bottom. Then the number of joints of the covering will be minimal, which means that the roof’s tightness indicators will increase.

Prices for corrugated sheets

Corrugated sheet

Installation rules

During the installation of corrugated sheets, certain rules must be followed, otherwise the roof will be unreliable and will not last long. And these rules apply to all components of the roofing structure. For example, if the rafters are installed in increments of up to 100 cm, then sheathing boards can be used with a section of only 3x10 cm, this will be enough. But if the distance between adjacent rafters is 1 meter or more, then the cross-section of the sheathing bars should be larger. An unedged board can be used to create it. But in the place where the valley will be attached, the sheathing should be continuous at a distance of 60 cm on each side from the axis of the valley.

Table. Required sheathing pitch.

Slope angle value, degrees	Lathing type/step	Thickness of profiled sheet, mm	Material grade
Up to 15	Solid	0,5	C8
15; more than 15	Solid; up to 30 cm	0,5	C10
15; more than 15	Solid; up to 50 cm	0,5-0,7	S20
Up to 15; more than 15	30 cm; 65 cm	0,5-0,7	S21
Up to 15; more than 15	50 cm; 1m	0,5-0,7	NS35
At least 8	Up to 3 m	0,7-0,9	H60
At least 8	Up to 4 m	0,7-0,9	H75

Corrugated sheeting is a material that is created from metal that is prone to corrosion, although protected by certain coatings. It is imperative to ensure good ventilation under it - this will reduce the risk of the formation of large amounts of condensation, which negatively affects the profiled sheets. To create a ventilated space, a counter-lattice is laid - then you will get the best option for the gap between the finishing roofing material and the waterproofing layer.

Prices for various types of construction boards

Construction boards

Attention! Wood is a material that does not like water. It negatively affects it and gradually destroys it, leading to rotting processes. To reduce the risk of their occurrence, it is recommended to impregnate all wood products with protective compounds before installing the roof.

Installation of corrugated sheeting always begins with the installation of a cornice strip secured to the sheathing using self-tapping screws or nails. Further work on laying the lining carpet and other materials is carried out so that drops of water do not fall on them in the future, but immediately fall off the profiled sheets onto the eaves strip and enter the drainage system.

It is recommended to glue all joints between individual elements of corrugated sheets with sealants and use a special mastic or sealant. Sheets of corrugated sheets can be laid starting from any side of the roof - right or left. But individual elements must be overlapped with each other. On flat slopes, when using spacers, the overlap can be one wave, and without them, two waves of material. If the roof slope is steep, then the material is laid with an overlap in one wave without the use of spacers.

If the roof is large enough and the length of the sheets is not enough to cover the entire distance from top to bottom (from the ridge to the eaves), then the profiled sheets are laid with an overlap, the width of which is 20 cm. In this case, laying is carried out from the bottom up so that the edge of the bottom sheet overlaps the edge upper

Attention! It is recommended to work on the roof using safety ropes and, preferably, guardrails. It is necessary to move along the laid corrugated sheets in soft shoes, stepping only on the recesses. If the coating of the material has been scratched or damaged in some other way, these areas are additionally treated with protective compounds.

Fastening material

To fasten the profiled sheet, special galvanized fasteners with a hexagonal head are used. These are self-tapping screws 4.8x19 mm. They are screwed from the ridge to the eaves in increments of 50 cm. Along the ridge or on the eaves, screws are screwed into every second corrugation so as to attach the material to the sheathing. For the remaining area of the profiled sheet, 4.8x38 mm self-tapping screws are used, taking into account that there are 4-5 of them per 1 m2 of sheet.

To fasten corrugated sheets, only roofing screws are used, which have special linings made of dense rubber that protect the metal from moisture penetration. The screws must be screwed in tightly, at right angles to the surface.

Methods for multi-row laying of corrugated sheets

If the installation of roofing material involves laying it in several rows, then there are two options for performing this work. In the first case, the first sheet in the bottom row is first laid and the sheet of the second row is immediately mounted next to it. Next, the second element of row 1 and the second element of row 2 are installed. This results in a part of the roof consisting of four sheets. Then, using the same principle, a second block of 4 sheets is mounted, etc. That is, the roof is “sewn up” as if in separate large sheets, consisting of 4 smaller ones. This method is applicable for material that has a drainage groove.

In the second case, the block is assembled from 3 sheets, where first the two lower sheets are fastened together, and the third sheet is already attached to them, which is the first element of row 2. The structure is aligned along the eaves overhang, and it is fastened. This option is suitable for sheets that do not have a drainage groove.

The following tools may be required for installation:

screwdriver;
construction level;
scissors for cutting metal;
drill;
roulette;
gun with sealant.

Contrary to the opinion of inexperienced craftsmen, welding cannot be used to lay corrugated sheets. When exposed to high temperatures, the material will deteriorate. If it is necessary to trim sheets, scissors for metal products are used, and all cuts after the procedure are treated with anti-corrosion compounds.

Installation of corrugated sheets and other roofing elements

Creating a roof from this material involves performing the following steps:

installation of rafter system;
waterproofing;
creating sheathing;
laying insulation;
creation of counter-lattice;
laying corrugated board and its fastening;
fastening additional strips.

On a note! A layer of insulation needs to be laid only if it is planned to create a warm room under the roof. Otherwise, this step may be missed.

Glass wool, polystyrene foam, and mineral wool can be used as insulation. They must be laid very tightly, tightly, so that cold bridges do not form under the roof, allowing cold air to enter the room. The material used is the same thickness as the width of the rafters.

The waterproofing material is secured using construction staples made from a stapler or nails; it is attached directly to the rafters, covering the insulation. It has proven itself well as a waterproofing material. The sheathing is mounted on top of it.

Before the corrugated sheets are laid, a cornice strip is installed. It will protect the ends of the rafters from moisture. The installation of the cornice elements is carried out with an overlap of 10 cm, and fastening with self-tapping screws - in increments of 30 cm. But after laying the profiled material, the ridge strips and end strips are fastened. The first will close the gap remaining for ventilation at the junction of the two slopes. The end strip is also called a wind strip and is installed on the ends of the roof. It is necessary to reduce the wind load experienced by the corrugated sheet.

Advice! It is better to invite an assistant to work with corrugated sheets. It will not only make it easier to lift the material onto the roof, but will also help during installation of the material.

Products made of polyurethane foam act as sealants that are placed between the individual sheets to better connect them. Also, the purpose of using seals is to reduce the noise level that will come from the roof during rain and increase thermal insulation performance. A seal of this type is attached under the sheets to the sheathing. It is recommended to use material that has special perforation.

Video - Installation of corrugated roofing sheets

Fastening corrugated sheets

Step 1. The first sheet is laid on the roof: double-sided tape is glued to the previously decorated cornice. A strip of sealant is glued onto it. If a sealant is used for sheets with a self-adhesive backing, then adhesive tape is not used. The corrugated sheet is laid on the sheathing so that its edge, with a slight indentation, rests on the strip of sealant.

Step 2. The corrugated sheet is fixed using roofing screws. At the edges, screws are screwed in more often than on the rest of the material element. The vertical pitch of the screws is 50-60 cm.

Step 3. The next sheet of corrugated sheeting is laid with an overlap on the previously laid first one. In this case, the sealant is used in the same way. The edge of the sheet with the drainage groove should be at the bottom, under the second sheet. The sheet is screwed in the same way with self-tapping screws.

Step 4. Next, the roof is decorated in the place where there is a pipe. The corrugated sheet is laid around this part of the roof. Only the topmost element does not fit. A sealant is glued to the profiled sheet laid below the pipe level.

Step 5. A layer of sealant is applied to the seal.

Step 6. The junction strip is cut and bent in accordance with the shape of the pipe. Then it is laid close to it so that part of it lies on the seal, and is attached to the pipe with dowels.

Step 7 The strip is attached to the sheet of roofing material using roofing screws.

Step 8 The side strips are fastened in the same way. They are placed on top of the previously installed strip.

Step 9 After installing the bottom and side abutment strips, the roof section above the pipe is decorated. First, seals are glued around the perimeter of the installation of the upper part and on the upper parts of the side strips.

Step 10 According to the shape of the side junctions, bends are made on the top junction bar. The bar is installed in its place. Its width should not be less than 40 cm.

Step 12 A decorative one is mounted on top of this junction, which is also secured with dowels.

Step 13 Polyurethane sealant is applied along the perimeter of the junction so that it closes the gaps between the strip and the pipe.

Step 14 Using a sealant, the top sheet of corrugated sheeting is installed. It is secured with roofing screws.

Step 16 On the other side of the extension, the valley is installed in the same way, but in the upper part it overlaps the previously installed one.

Step 17 A sealing tape with a width of at least 200 mm and a thickness of at least 10 mm is glued along the edge of the valley.

Step 18 Polyurethane sealant is applied to the surface of the tape.

Step 19 A profiled sheet is laid on the valley with an overlap of 4 cm. It should cover the sealing tape. The material is secured with roofing screws.

Step 20. The end strips are being installed. The plank is cut to the shape of the roof, one of its edges is bent, as shown in the figure. A sealing tape is glued to the inside edge.

Step 21 The plank is installed in its place and secured with roofing screws from above and from the front side.

Step 22 The ridge strip is being installed. With a slight indentation from the edge, double-sided tape is attached to the profiled sheets. A seal is installed on it and coated with sealant.

Step 23 A ridge element is installed on top, bent accordingly to the shape of the roof.

Step 24 The ridge element is fixed with roofing screws.

Prices for popular models of screwdrivers

Screwdrivers

Video - Do-it-yourself corrugated roof

Video - Installation of corrugated sheets on the roof

Correct installation of corrugated sheets on the roof is the key to ensuring that the roof will be reliable and will last for many years without leaking. On average, the service life of this type of coating is at least 20 years. But this is provided that all installation rules have been followed.

Working with corrugated sheets is convenient and simple. The thing is that it is light in weight, and the size of the sheet allows it to cover a large area of the roof at once. In addition, this material is soft, fastening is simple, so you can tackle the roofing yourself. There is no need to be afraid. Two basic rules that will help in your work:

follow the step-by-step guide;
avoid possible mistakes, which we will discuss in detail in the article.

Working with corrugated sheets is relevant today; search engine sites are filled every day with thousands of new queries like “we will cover the roof with corrugated sheets.”

Material selection

When approaching the issue of choosing a roofing material, they initially go through all possible options. There are quite a lot of them on the Russian market, and the advantages of each should be known to those who have approached the issue of roof covering closely. In this matter it is important:

material cost;
its quality and durability;
appearance.

Having decided to use corrugated sheeting, remember that the material must be roofing, that is, have a groove for rapid precipitation. The brand also matters.

C - wall;
N - roofing;
CH - universal.

Corrugated sheeting is a universal material; it is used everywhere. Due to the growing popularity and number of sales, manufacturers are releasing new items in bright colors and interesting designs. The advantages of using it as a roofing material are obvious:

ease;
the presence of corrosion protection;
affordable price;
ease of installation;
ensuring roof waterproofing.

A roof covered with corrugated sheets can only leak if there is serious mechanical damage, for example, as a result of a heavy tree branch falling. In general, the durability of the coating is one of the most favorite qualities.

The corrugated sheet consists of several layers that provide its protection:

zinc coating;
anti-corrosion layer;
soil covering;
polymer coating.

A protective film is also applied on top, which is removed after installation. An overview of the different brands of corrugated sheeting that can be used for the roof is shown in the video.

Self-installation

A detailed description of how to independently lay corrugated sheeting on a roof will help any beginner cope with the task. For a standard gable roof of a house measuring 10 by 12 meters, two people will complete the task in two days. This will save money and provide you with some experience that will be useful later.

Be careful when transporting, loading and unloading. If the sheet is damaged, it will need to be replaced, which will incur additional costs. The bends cannot be corrected. When lifting corrugated sheets onto the roof, logs are used. You need to lift one sheet at a time.

You can walk on laid roofing sheets, but you need to do this carefully: step only on places under which there is sheathing while wearing soft-soled shoes.

Preparatory process

For those who have just begun the process of raising the roof, below is a short video for reference. We will start with the fact that for fastening we will need to make a sheathing. Thermal insulation is first created and the roof is covered with waterproofing material.

The work is done in this way:

vapor barrier material is placed under the rafter;
in case of severe frosts, insulation is laid in the region;
waterproofing material is laid on the rafter;
install counter-lattice and sheathing.

All this is called a “roofing pie”. A cornice strip will need to be attached to the first sheathing board along the edge of the roof, along which water will flow.

Lathing and counter-lattice are required elements. Before laying them out, you need to treat them with a special solution against wood rotting. The presence of insulating materials will further reduce heat loss through the roof.

Necessary materials

You need to prepare tools and materials in advance so that you don’t get distracted by little things later. So, let's make a list:

sheets of corrugated sheets (it is best to use sheets with a length equal to the roof slope, as stated in the first introductory video);
logs (serve for lifting roofing material onto the roof);
roofing screws for fastening;
portable screwdriver;
gloves.

Sheets of corrugated sheets are calculated and cut on the ground. They are delivered upstairs for fastening. Treat cut areas with anti-corrosion primer. As for self-tapping screws, it is better to use special ones, since they are equipped with a rubber seal that does not allow moisture to leak under it. Also, the convenience of their use lies in the fact that you do not need to drill a hole in advance, and the caps are painted in different colors to match the color of the corrugated sheet. The consumption of self-tapping screws with a running size of 4.8*28 mm is 6-7 pieces per 1 m 2 of material.

Advice ! Use a cordless screwdriver; it is not heavy and does not require additional pulling of the extension cord.

Safety regulations

Compliance with safety rules is also important, because working at height is associated with a number of difficulties and dangers. Adhere to the following rules:

It is forbidden to cover the roof with corrugated sheeting in windy weather;
be sure to use thick gloves to avoid cuts from the material;
for ascent and descent, use an extension ladder fixed in two places;
It is prohibited to work on the roof without insurance;
if it starts to rain, stop all work until the roof is completely dry;
when moving along fixed sheets, the foot is placed in the groove;
After work, they remove all rubbish and tools after themselves.

If you follow this list of rules, you can avoid injuries, which, unfortunately, are common when working for beginners.

Features of laying corrugated sheets

Installation work begins with the installation of the cornice strip. Very often it is forgotten. When installing corrugated sheeting, take into account the angle of inclination of the roof in advance. If it does not reach 15 degrees, the corrugated sheeting is overlapped by 20 centimeters. An angle of up to 30 degrees allows you to overlap by 15 centimeters, and for an angle above 30 degrees you can reduce it to 10 centimeters. Keep in mind that the minimum overlay size can be considered the size of one wave, which is convenient to use.

You can start work either on the right or on the left. For hip roofs, work begins from the middle of the hip.

Work process

Carefully lift the sheets onto the roof, lay them down and level them. The video “Roofing the Garden” shows the process of roofing work.

The fastening of corrugated sheeting to the sheathing should be carried out in the groove, and not at the top of the wave, then the fastening will be reliable. From below we move up to the ridge. In this area of the roof you need to use long self-tapping screws. As a rule, this is 80 millimeters.

If the length of the slope is very long, and it is not possible to cover the roof in one sheet, you will have to work with smaller corrugated sheets. In this case, it is laid overlapped from bottom to top. This prevents moisture from getting underneath it.

The end strips and ridge elements are installed after all work is completed. First, a small gap is left in the area of the ridge, which is needed for ventilation. Despite the fact that there are a lot of photos and videos on the Internet with details of working with corrugated sheets, beginners often make mistakes during installation.

The most common mistakes

Some of the errors are presented in the video below; they relate to the sequence of installation of corrugated sheet joints.

In addition, mistakes are often made when working with corrugated sheeting in the area of valleys, ridges and pipes. Beginners cut and bend metal into special shapes, although this is not necessary. Manufacturers specially produce overhead elements from this material to make the task easier.

You don’t need to invent something; it’s easier to buy a ready-made element made of corrugated sheets and attach it to the roof, which will be reliable. Otherwise, there is a risk of leaks and rust formation over time. The fastenings must be overlapped. Attention to those whose roof is equipped with chimney pipes: an additional chimney is installed on the pipe (you can choose the color).

Roofing work with corrugated sheets is simple; you can do it yourself. The most important thing is to follow the instructions and observe safety precautions. Then your roof will be one of the most beautiful!

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