Do-it-yourself profiled sheet roof. How to cover the roof with corrugated board

Metal profiled sheet, also known as corrugated board, has been widely used in recent years for the installation of roofing. The profiled sheet is strong, reliable, beautiful and durable. Therefore, corrugated roofing is becoming more common for buildings of various purposes.

A modern profiled sheet is a complex multi-layer structure, the outer layer of which is usually a colored coating of synthetic resins or organic polymers. It is this that ensures the high resistance of corrugated board to corrosion and other negative external influences.

Roofing with a profiled sheet - photo of laying corrugated board on the roof of a residential building

In addition to such advantages as external attractiveness and long service life, the profiled sheet is lightweight and easy to process. Therefore, corrugated roofing can be mounted even on your own, without the involvement of builders.

Do-it-yourself corrugated roof is mounted in several stages. If you follow all the rules and advice, you can make a reliable roof on your own that will last you for decades, even if you have no experience in construction. Below we briefly discuss each of the stages.

Roof construction from corrugated board: the choice of profiled sheet

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

The cross section of the rafters is selected based on the calculation of the operational load acting on the roof. But the weight of the roofing material itself is of considerable importance. The corrugated board is light, so the roofing of the roof of the house with corrugated board allows you to reduce the weight, and, consequently, the cost of the truss system.

The pitch of the roof lathing also depends on the choice of corrugated board. Roofing of the roof with a profiled sheet with a high profile of a wave or a trapezoid allows you to increase the step of the crate, which also significantly reduces the cost of the roof. The table below shows the crate step for the most common grades of profiled sheet.

Lathing pitch for roofing from various grades of profiled sheets and with different slopes

brand profiled sheet	bias roofing, deg.	Thickness flooring, mm	Step battens	Value overlap sheets in a row
NS-8	over 15	0,55	solid	two waves
NS-10	up to 15	0,55	solid	two waves
NS-10	over 15	0,55	300 mm	one wave
NS-20	up to 15	0,55... 0,7	solid	one wave
NS-20	over 15	0,55... 0,7	500 mm	one wave
S-21	up to 15	0,55... 0,7	300 mm	one wave
S-21	over 15	0,55... 0,7	650 mm	one wave
NS-35	up to 15	0,55... 0,7	500 mm	one wave
NS-35	over 15	0,55... 0,7	1000mm	one wave
S-44	up to 15	0,55... 0,7	500 mm	one wave
S-44	over 15	0,55... 0,7	1000 mm	one wave
H-60	at least 8	0,7, 0,8, 0,9	3000 mm	one wave
H-75	at least 8	0,7, 0,8, 0,9	4000 mm	one wave

Do-it-yourself preparation for the installation of a corrugated roof

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

The roofing device is started after the installation of the truss system is completed. First of all, a layer of waterproofing is laid on top of the rafters. It performs two main functions.

Construction of a roof from corrugated board: installation of waterproofing and installation of a ventilation gap between the waterproofing and the crate

The main one is the protection of the under-roof space from condensate, which can form on the inner surface of the corrugated roofing. In addition, waterproofing will become an obstacle in the way of rain or snow, which can get under the corrugated roofing with a strong oblique wind.

Carrying out the arrangement of the roof from corrugated board, we must not forget about the need for ventilation of the roofing. Although all wooden roof structures are necessarily covered with antiseptic protective compounds, excessive moisture under the roofing can significantly reduce the life of the roof.

The rules of corrugated roofing provide for the installation along the rafters, on top of the waterproofing layer, bars, the so-called "counter-lattice". Usually it is a wooden beam, with a section of 40x40 or 50x50 mm. In this way, a ventilation gap is created between the corrugated roofing and the roofing waterproofing.

Roof prepared for corrugated roofing

Being engaged in the preparation of the rafter system for the installation of corrugated flooring, it is necessary to foresee all passages through the roof for chimneys and ventilation ducts, as well as for the installation of fire hatches and built-in skylights. The manufacture of roofing from corrugated board in compliance with the technology provides for strengthening the lathing in these places by installing additional wooden bars along the edges of the openings. An additional board must also be installed at the place of attachment to the roof of the snow catchers.

Delivery and storage of corrugated board

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

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

In addition, do-it-yourself roofing with a professional sheet is not the fastest process, especially if the installation of corrugated board is complicated by the shape or area of \u200b\u200bthe roof. Therefore, it is necessary not only to bring the profiled sheet to the site and unload it, but also to ensure the protection of the material until it takes its rightful place with your efforts. Do not leave him unattended under the open sky! Even if "the neighbors are great people" or you have a "high and reliable fence." There is a great risk of not finding a profiled sheet the very next day.

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

it is necessary to load the corrugated board on a flat solid base, laying on it across the sheets of the lining of the lining of wooden bars, not less than the width of the corrugated board;
during transportation, the profiled sheet must be tightly tightened with soft slings or belts to avoid friction between the sheets;
it is better to drive at a speed of no more than 80 km / h, while avoiding sharp jerks when braking and accelerating.

It is necessary to unload the corrugated board at the object one sheet at a time, transferring them in a vertical position, without kinks. The profiled sheet is stored indoors or under a canopy on wooden linings, 150-200 mm high.

Installation of additional elements in the manufacture of roofing from corrugated board with your own hands

The roofing of houses with corrugated board is not only a coating of corrugated board. Additional elements are installed on all edges and joints of the roof slopes, which not only protect them from snow, rain and wind, but also give the roof a complete and neat appearance.

Such elements include cornice and wind slats, junction and valley slats, as well as ridge elements. Some of them are installed before the roof is covered with corrugated board, and some - after the installation of the profiled sheet. Before installing the corrugated board, cornice strips and lower valley strips are installed. After the final fastening of the roofing sheets, the wind strips, the upper valley strips and the ridge are mounted.

The profiled sheet on the gable overhang may not be protected by a wind bar. But in regions with strong winds, there is a serious risk of tearing off the edge of the corrugated sheet on the gable overhang. Therefore, if any roofing from corrugated board is mounted, the instruction always provides for the need to install a wind bar on the pediment.

The ridge covers the upper joint of the roof slopes. Roofing and waterproofing in this place should not converge closely. Violation of this rule is one of the main mistakes that beginners often make. Due to this mistake, a do-it-yourself corrugated roof is poorly ventilated, which leads to excessive moisture in the insulation, heat loss, dampness and mold.

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

In the upper part of each slope, an additional batten board is installed specifically for attaching the ridge. Ridge elements are fixed to the crate with long self-tapping screws through the upper wave of the roofing profile in increments of 30-40 cm.

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

Corrugated roof: safety instructions

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

They raise the corrugated board to the roof along two wooden logs, supported by the upper ends on the crate of the cornice overhang. For this purpose, you can use a wooden ladder, turning it upside down.
You need to lift the cover only one sheet at a time, so that the top one cannot slip off and injure the person standing below.
Since the corrugated board is light and has a large windage, it is strictly forbidden to work with this material in windy weather.
Walking on corrugated board is possible only in shoes with soft rubber soles. Firstly, it will protect the polymer coating layer from damage, and secondly, it will prevent you from slipping on the smooth surface of the roofing.

If the slopes are rectangular, the installation starts from one of the lower corners of the roof. First, two or three lower sheets are laid, temporarily securing each of them with one self-tapping screw. Then one or two sheets of the next row are mounted. The stacked sheets are aligned along the edges of the cornice and gable overhangs and finally fixed. The coating is laid in such a way that each next sheet in a row overlaps the capillary groove of the previous one.

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

The fastening of the profiled sheet of the coating is carried out with special roofing screws with a press washer and a sealing gasket made of neoprene rubber. Particular attention should be paid to their correct tightening, since the tightness of the attachment point depends on the tightness of the entire roofing.

In each wave, the corrugated board is attached to the cornice overhang and at the junction of the upper and lower rows of the coating. Then the screws are screwed in 30-40 cm in a checkerboard pattern. The total consumption of fasteners is approximately 8-10 self-tapping screws per 1 m² of corrugated board.

High-quality and durable roofing from corrugated board is quite easy to build on your own. It is only important to know what materials to take, how to properly attach the sheets to the crate and how to protect the inner under-roof space from dampness.

And we will pay special attention to additional elements that need to be bypassed with full compliance with the technology. So, do-it-yourself corrugated roofing - step by step!

Material preparation: avoiding the first mistakes

Once you have made accurate calculations for your roof, you can order profiled sheets. But, if you purchased corrugated board, but for some reason its installation will have to be postponed (for example, prolonged rains), then store the sheets without removing the factory packaging, on a flat surface and indoors. Additionally, bars should be placed under the sheets in increments of 50 cm.

Shift and move such roofing material carefully, holding the edges along the length and especially avoiding creases and deflections of the sheets. You also need to move the sheets carefully, because. modern polymer coating is particularly sensitive to mechanical damage.

As well as cutting this material with abrasive cutting tools: fragments from the circle will scratch, and significant heating will occur at the cut site. But, if you had to work that way, then immediately cover all the damage with repair paint.

Fortunately, the technology of roofing from modern corrugated board will allow you to carry out all the work in the warm season, from April to September, and you will not have to store the sheets for a long time.

Installation of corrugated board: step-by-step master classes

Let's first of all immediately deal with building terms so that you do not have to search the Internet for the meaning of each new word:

You will be surprised, but the same (at first glance) material needs to be laid in different ways. It's all about the manufacturers - everyone gives their own recommendations for laying, and they are really important. Because corrugated board from different companies is demanding on its conditions, even if the differences are small. Therefore, carefully study the instructions attached to the roofing material and do not trust fully hired workers who “ate the dog on such roofs” and try to do everything their own way.

Here is a simple example of how the installation of corrugated board with a thickness of less than 0.7 cm and more durable differs:

And when working with such material, a wooden scaffold is no longer needed:

Imagine that a hired team starts stomping on thin corrugated board, because before that they “put the exact same roof on your neighbor” and “nothing bent”? And now it will bend, and how, to which the unfortunate workers will declare that "the way it was."

But, speaking in general, the main indicator of high-quality roof installation is tightness. After all, the roof just serves to protect all internal structures from moisture and cold. And even an inconspicuous gap can become a serious problem: dampness, smudges, quickly deteriorating materials and fungus. That is why we will now analyze in detail all the subtle points.

A little about safety

The technology of roofing with a metal profile is not as complicated as it is important not to damage the roofing during its installation. After all, although this material looks strong and tough, caution is still required when working with it:

On the finished metal profile flooring, move in soft shoes.
Try to step only on the concave waves of the sheets and better directly on the screws.
So, you can only step on the roof on your toes.
Keep your foot always parallel to the slope.
Only one leg should be in one recess.

Construction of a sheathing for corrugated board

The crate for mounting the roof is made either solid, if the slope is small, or sparse, in increments of up to 5 meters. But with what step the roof lathing is needed depends on how thick the sheets of corrugated board will be:

Waterproofing and wind protection

Next, we think about how to properly make a roofing roof pie. The modern market produces many waterproofing materials, of various types and properties. We even have a whole separate article about it. But in general, focus on the following program of action:

Step 1. So, fix the selected waterproofing material on the rafters. To do this, take the most common construction stapler, but before laying it, be sure to check whether you are laying the film or membrane on the wrong side. And glue the panels together with a special tape.
Step 2. After that, we break through the slats along the rafters (take a thickness of at least 2 cm) and thus form the ventilation gap necessary for ventilation.
Step 3. Now we put the roofing material on this upper crate.

Here's what it all looks like in real life:

We select high-quality self-tapping screws

The consumption of self-tapping screws when fastening corrugated board is usually about 6 pieces per 1 square meter. Self-tapping screws 4.8 by 28-35 mm are suitable, as for wood, and for additional elements - 4.8 by 50 or 60 mm. As a tool, purchase a screwdriver with a special nozzle or a cordless electric drill from the same manufacturers of roofing materials.

Special self-tapping screws for fastening profiled sheets are indispensable, because. This is the only way to ensure:

Complete waterproofing of the roof.
High connection strength.
The minimum risk of injury to the coating during fastening, and, therefore, the absence of corrosion in the future.

The highest quality and most reliable self-tapping screws for corrugated board are sold by the same suppliers that deal with sheets. Use zinc plated carbon steel or stainless steel screws whenever possible - this is ideal. But when buying, still carefully inspect all sealing washers.

How to properly fix the corrugated board?

You can understand that you have fastened the screw correctly by the metal washer - it will protrude about 1 mm of the rubber gasket.

It is necessary to screw the screws into the roofing material strictly perpendicularly, directly into the deflection of the vertical wave at the corrugated board. Although there are a lot of disputes about this in the construction fraternity, and each method has its own advantages. So, a self-tapping screw in the lower wave creates a more reliable fastening, and in the upper wave, rainwater is much less likely to get into the under-roof space.

On the eaves and ridge, you need to screw the screws into the deflection through the wave, and in the middle of the sheet - into each board of the crate. In total, you will need about 5-8 pieces per square meter.

What tools are needed for installation?

Note that the device of the roof itself from corrugated board is really within the power of even a person with little knowledge in construction. Of course, there are roofing materials that only experienced professionals can properly install. But in the case of modern corrugated board, we can reassure you: you can handle it yourself!

Fortunately, there is nothing complicated here. Due to the large length of the sheets, the roof slopes overlap without additional transverse joints, and the material itself is easy to cut and shape. You will need a minimum of tools for this business:

So, you can lay corrugated board on slopes of almost any angle of inclination, it is only important to correctly calculate the amount of transverse overlap:

150-200 mm for roofs with 15-30°.
200 mm for slopes from 14°.
100-150° at large angles.

For fastening, you will need self-tapping screws with special sealing washers:

In what order should the sheets be laid?

Many roofers install profiled sheets as follows: starting from the bottom row, they first lay 4-5 sheets, and each of them is fixed with only one self-tapping screw in the center. After that, the sheets are interconnected with self-tapping screws 4.8x19 mm, which are installed in increments of 500 mm. Now they check how the sheets turned out to be aligned with the roof overhang, and finally fix the roofing material. Here is the scheme:

But, if you are working on the roof for the first time, in order to avoid distortion, fasten the profiled sheets in the same way, but in this order:

Step 1. We install the first sheet on the crate, and fasten it with one screw at the very ridge.
Step 2. We lay the second sheet so that the bottom edges of both sheets below form one perfectly even line.
Step 3. We fix the overlap along the top of the wave under the very first transverse fold.
Step 4. We evaluate by eye how correctly the sheets are docked. Uneven? Then lift one sheet from the other, tilt it slightly from the bottom up, and again join the fold by fold. Secure everything with self-tapping screws at the top of the waves.
Step 5. Work with 3-4 sheets in this way, carefully align them with the cornice and then install the remaining sheets.

To the base of the roof, the corrugated board must be mounted so that the edge extension is 40 mm from the eaves. This is necessary in order to leave a gap of the optimal size on the ridge and the ventilation of the roof was not disturbed. By the way, if the profiled sheets have a gutter, then each next one should overlap the groove of the previous one.

Remember: when laying, you cannot step on the comb of the sheets - they will bend. In general, fitters wear soft shoes for such work. That's all the details!

Working with additional elements

And now let's move on to our numerous additional elements. All of them, as a rule, are made in standard lengths: for a roof with a polymer coating - 2 meters, for a galvanized roof - 2.5 meters. They complete the roofing work themselves. The sealant, which is traditionally placed between the roofing material and additional elements, allows them to fit more tightly to the sheets, further preventing moisture from entering under the roof and allowing it to “breathe”.

But for the design of skates, cornices and other complex structures, you need to purchase special elements that are offered by the same manufacturer whose roofing material you purchased:

It is necessary to fasten the additional elements with the same 4.8 roofing screws as the main material. The only difference is that the metal roofing is fastened with self-tapping screws 28-35 mm long, and the elements - with self-tapping screws 50-60 mm long.

Valley and valley overlay

And now let's deal with such a mysterious name as "valley". The valley and the valley lining are additional elements duplicating each other, which are mounted at the points of internal convergence of two differently directed slopes. You need to fasten the valley under the corrugated board.

Therefore, if the roof has a complex shape, with internal surface joints, then take a valley and a valley lining as an additional element. So you will give your roof a neater and more aesthetic appearance, additionally protecting complex transitions from moisture getting inside.

Aprons for pipes

The most critical stage of the roof is the removal of pipes. Such pipes consist of two conditional parts - the lower one, which goes along the roof profile, and the upper one, the actual pipe. And, if the through passage of the pipe falls on the lower part of the roof, it makes sense to install a snow stop above the passage.

For a sewer ventilation system, an uninsulated pipe about 10 cm in diameter is passed through the roof, without a head. And for radon, they take the same pipe, but with a cap. Remember that these pipes cannot be connected to ordinary ventilation pipes, because. for those, insulated elements of 125 mm in diameter are already used.

The pipe itself can be installed both before the installation of the roof, and at the end. If you chose the second option, then in the finished roof you will need to cut a hole for the pipe and cover it with some material for a while. In the course of finishing work, pipe cuttings will need to be made from galvanized steel aprons or more modern materials such as Wakaflex.

Here is a good tutorial on how to do it:

dormer window

Now we are working with the dormer window. So, we cut the sheet of corrugated board into two parts at the lower end of the groove, put the bottom sheet, then the bottom plank of the groove, and only then the top roofing sheet.

snow holder

The snow guard is mounted in those places where there is a risk of snow rolling. For corrugated board, this is usually the second line at a distance of 30-40 cm from the eaves. For installation, use self-tapping screws 4.8x50 through 1-2 profile waves.

Outer and inner corner

If the slope changes its direction, then additional finishing elements are used, such as the inner and outer corner and the transition. Their main task is to create maximum tightness and give the joint of sheets an aesthetic appearance.

adjoining

The junction is an additional element that serves as a bypass for the chimney or protection of the roof adjoining the wall:

Cornice, end plank and joint plank

And here is the instruction:

Start the installation of the end strips from the side of the roof overhang, directing towards the ridge.
He already has an extra part of the end plate, just cut it off.
Fasten the plank to the end board and profiled sheets in the ox comb with screws in increments of up to 1 meter. If you did everything right, the end strip will cover at least one wave of the roof profile.
Attach the end plate with wood screws 4.8x60 or 4.8x50, directly to the wooden base. Leave a step from 30 to 50 cm and make sure that the end plate completely covers the end of the extreme wave of the corrugated board.

Now we move on to the installation of the connecting strip of the joint. Its length is 2 m, and the overlap of the planks cannot be less than 1 meter. The joint plank is taken 2 meters long, and two planks are attached to each other with an overlap of at least 1 meter. Attach the additional element to the wall in a strobe, or hide everything under the wall sheathing.

The main purpose of the eaves strip is to protect the under-roof space from precipitation, especially in rain with strong winds. And the lower the angle of inclination of the roof, the more necessary this additional element. But you need to fix the eaves bar earlier than the sheets of corrugated board. Overlap - 100 mm.

Installation of the skate

After all the roofing material has been laid, we fasten the ridge. In advance, we line the joints of the ridge and the roof with a sealant. Ridge elements for trapezoidal roofing sheets are usually taken smooth. Between them and profiled sheets, it is advisable to put ventilated seals, and for small corrugations - special ridge seals.

We fix the skate with screws on both sides at a distance of 2-3 waves. It is important that the ridge itself covers all the first screws that hold the sheets of roofing material. Ridge strips should overlap each other with a grip of at least 1 meter, and we fix the elements to the roofing sheets with self-drilling screws in increments of up to 3 meters.

An important point: the smaller the angle of inclination of the roof, the wider the ridge itself should be. So, the most standard dimensions are 140x140 mm or 200x200 mm.

But today it is more fashionable and rational to order a figure skate, which comes in two dimensions: 110x30x110 mm and 145x50x145 mm. There are also special types of ridge for a complex roof, when multidirectional slopes come together.

Roof care from corrugated board

Snow on the roof of profiled sheets lingers quite a bit, and therefore it is not necessary to clean it. But, if you need to carry out certain repairs, then arm yourself with small plastic shovels that will not leave scratches.

Caring for corrugated roofing is quite simple: the rain itself will wash away all the dirt and dust, and you just have to clean the grooves and drainage systems from clogged fallen leaves once a year.

If for some reason a more serious cleaning is to be done, then use ordinary water and a hose with a pressure of up to 50 bar. Detergents can be used only those that are intended for painted surfaces, and "White Spirit" will help to cope with stubborn stains.

As you can see, nothing complicated!

Building a country house is not an easy task. But what could be more reliable and cozier than a home built with your own hands?

When the walls are ready, it's time to build the roof. This is a crucial stage of construction, on which a lot depends. One of the modern and practical roofing materials, corrugated board, is easy to install and reliable in operation. How to independently build a roof from corrugated board?

Material selection

The professional flooring represents sheets of stamped galvanized steel. They are relatively light weight and bend easily. The profiled sheet can be coated with a special polymer composition that protects it from corrosion. Outside, the new sheets are covered with a protective polyethylene film, which is removed after the installation of the roof.

Important! The resistance of the metal to corrosion provides a protective zinc coating. According to Russian GOST standards, its indicator should be at least one hundred and twenty grams per square meter.

When mounting the truss system with your own hands, you need to know in advance what kind of roofing material you plan to cover it with. This is important because each coating requires a certain type of sheathing and rafter step.

When choosing a corrugated board, it is important to take into account the peculiarities of the local climate. For example, in regions with severe snowy winters, you need to choose a coating with a wave of at least 20 millimeters. The angle of inclination of the roof in this case must be at least fifteen degrees, otherwise the snow mass will linger and may deform the corrugated board.

The profile has several markings:

corrugated board C - with a wave height of 8 to 44 mm, used for light roofing or for decorative purposes, for the construction of temporary protective objects;
corrugated board NS - with a wave height of 35 - 44 mm, used for roofing, wall construction;
corrugated board H - wave height up to 114 mm, has additional stiffeners and is used for mounting ceilings between floors and capital roofing.

For the construction of the roof of a private house, the grade of corrugated board HC44 and HC 35 is considered optimal.

How to calculate the consumption of corrugated board

When calculating the consumption of material for building with your own hands, you need to take into account that the sheets are overlapped vertically and horizontally. In this case, the vertical overlap is equal to the wave, and the horizontal one depends on the slope angle. An angle of up to fifteen degrees requires more than twenty centimeters of overlap, up to thirty degrees - fifteen centimeters, more than thirty - ten centimeters.

Important! If the angle of inclination of the roof is less than 12 degrees, during installation, all seams must be treated with a special sealant.

The size of the cornice overhang depends on the brand of corrugated board. For HC8-10, it remains within 5-10 centimeters, HC 35 - H60 can reach 30 centimeters.

To calculate the consumption of corrugated board, you can use special programs that can make calculations for complex geometric shapes of the roof.

How to correctly calculate roofing materials:

Tools and materials for installation

Do-it-yourself installation of corrugated board does not require complex and professional tools. For this purpose you will need:

level, tape measure and rope;
knife, scissors for metal;
marker or chalk;
screwdriver, drill, stapler;
sealant in a tube with a gun.

Important! The metal profile is not resistant to high temperatures, so it is cut and installed without welding.

If there are no scissors for metal at hand, you can cut the corrugated board with a hacksaw or electric jigsaw. To protect the cut edge of the sheet, it must be covered with a special primer.

Self-tapping screws are used to fasten the corrugated board to the crate. They are made of galvanized steel and equipped with a rubber gasket, which will not allow moisture to penetrate through the mounting hole, and protect the wood from decay, and the corrugated metal from corrosion.

Advice! In order not to deform the sheets when they are lifted to the roof, you need to use logs. They are installed from the ground to the roof.

Logs will also help to avoid damage to the material during unloading and transportation.

Insulation and sheathing of corrugated roofing

Vapor barrier of corrugated roofing is carried out with a specialized film. You can use for this purpose and the usual roofing material. The main task of the vapor barrier material is to prevent excess moisture from accumulating under the roof. Sheets of hydro and vapor barrier are overlapped, attaching them with a stapler to the rafters.

Important! The installation of the film must be started from the lower edge of the roof, so that the upper row lies with an overlap on the lower one.

A crate is fixed to the insulating layer. Its density depends on the profile brand. If the profiled sheet is thin (grade C), the crate is made solid. For denser material, the pitch of the crate varies between five to ten centimeters. All wooden roof elements are treated with special protective compounds against fire, decay and insects.

Do-it-yourself installation of a profiled sheet

The laying of the profiled sheet begins from the lower edge of the roof, from the corner. The edges of the material should hang down by about 4-10 centimeters, depending on the brand of corrugated board. The first row is fixed on the crate with self-tapping screws. The fastener is screwed into the bottom of the wave. About five self-tapping screws are consumed per square meter of material.

At the corners of the roof, wind corners are used.

The overlap of the profiled sheets is done so that the waves match. The optimal horizontal overlap is twenty centimeters. If the roof angle is more than fifteen degrees, a sealant must be used. It is a gasket that does not allow snow, rain and wind to clog into the seams. The sealant must be selected depending on the waveform of the profiled sheet.

After mounting the main part of the roof surface, end and ridge strips are attached. Lastly, the corrugated board is attached to the walls and the chimney.

Important! Self-tapping screws on the sheet should not hang out. Properly installed fasteners do not deform the wave and are tightly fixed in the crate

If it is planned to install an organized drain on the roof, the eaves, gutter and plank are installed first. A perforated soffit is installed for roof ventilation.

The ridge on the roof must have two ventilation gaps. The ridge element is fixed with self-tapping screws with a distance of forty centimeters.

What is important to remember when installing a corrugated roof with your own hands

Any work at height requires special care and compliance with safety measures:

you need to use safety ropes and belts;
with a large slope of the roof, it is important to install a fence;
use shoes with soft, non-slip soles;
do not work in wet and rainy weather (profiling becomes slippery);
all work must be carried out with protective gloves, the sharp edge of the metal sheet can injure hands;
raising and lowering the profiled sheet should be carried out only along the logs with the help of three people, preventing the free fall of the material.

Pros of a profiled sheet roof: strength, reliability, resistance to weather and corrosion, not very complicated installation.

A metal profile is made by cold rolling galvanized steel sheets. Then it is covered with several protective layers:

applied anti-corrosion coating
the sheet is primed
the bottom side is coated with a special varnish
polymer paint is applied to the top layer.

Thus, the structure of corrugated board can effectively resist the appearance of rust.

Useful information:

A wave-like configuration is given to the corrugated board by bending on specialized machines. This is done to increase bending resistance.

Which decking is better to choose?

Profiled sheets are divided into 3 classes:

C for enclosing walls or making fences
H for floors and coatings, the best option for the roof
NS combined universal version.

Do not forget to ask for instructions when buying corrugated board. There you can find a lot of quality advice on working with this profiled sheet. A quality product that has certificates will always have instructions. Certificates and instructions can act as an indirect guarantor of reliable and high-quality products.

Calculation of the required material

When calculating the number of profiled sheets per roof, do not forget to take into account the overlap on both sides. Additionally, add an overhang from the edge of the roof.

Vertical overlaps can be of different lengths, since they fit with overlapping waves, and the wave for different brands of corrugated board is not the same.

The horizontal overlap of profiled sheets depends on the angle of the roof slope:

angle up to 15 degrees, overlap more than 20 cm.
angle from 15 to 30 degrees, overlap from 15 to 20 cm.
angle more than 30 degrees, overlap from 10 to 15 cm.

The calculation of the roof overhang depends on the grade of the profiled sheet. The greater the profile height, the greater the overhang required. This is done to prevent moisture from getting under the overhang and, accordingly, rotting of the tree in the truss system.

Usually, when using a profiled sheet of grades HC8, C21, HC20, HC10, the cornice overhang is made from 5 to 10 cm. For profiled sheet grades HC35, H75, H60, C44 in the range of 20-30 cm.

The choice of lathing under the roof with a profiled sheet

I will warn you against the mistakes of novice roofers: be sure to consider the location of chimneys, ventilation and windows. In these places it is necessary to strengthen the crate by adding bars.

Although there are no strict standards for the implementation of the crate. Some rules to be aware of:

The bottom board running along the eaves is installed thicker than the top bars
The length and thickness are chosen based on the length of the sheets of corrugated board and self-tapping screws.

If you are reconstructing an old house, then you can not strengthen the truss system. As long as she didn't fall into disrepair. Since corrugated sheets are much lighter in weight, the roof can easily cope with the load, and you will save on the crate.

Waterproofing during roof installation

Before installing corrugated roofing on the roof with your own hands, it is imperative to lay a vapor barrier. You can use a wide variety of films that are commercially available. For budget repairs, you can use roofing material.

The moisture-proof film is attached to the rafters with a stapler. Laying must be done from the bottom up. Thus, the upper sheets will cover the lower ones, and moisture will not get on the wood. Be sure to check, after installation, the film for integrity and seal all the cracks with sealant.

With properly installed insulation, the roof is able to retain 25% more heat.

If you are going to make an attic on the roof, then you definitely need to lay insulation. For these purposes, matte insulation is better suited. The insulation is laid between the rafter legs and is closed on both sides with waterproofing.

Be sure to observe a uniform distance in the manufacture of the crate, for better fastening of the corrugated board. Usually the step is 0.5-1 meter.

Treat the truss system with solutions that protect against decay and fire.

Since it is impossible to be sure that there is no moisture on the surface of the waterproofing, it is recommended to make ventilation. The easiest way is to lay wooden slats between the roof and waterproofing.

Roof installation with corrugated board

Sheets should be laid from the bottom to the top, to the visor. It is also necessary to remember about the obligatory protrusion of the corrugated board from the edge of the roof.

Let's look at the options for laying profiled sheets on the roof:

First and most importantly, each next professional sheet should cover the previous one. It does not matter the direction of laying, from left to right or vice versa.
With a sloping roof, overlap in two waves or use a longitudinal gasket from the seal.
On a steep roof, you can do without a sealant and use an overlap in one wave.
The order of laying corrugated board depends on the type of roof. If the roof has two slopes, then laying starts from the end. When laying a hip roof, start from the center of the hip.
A prerequisite, when laying corrugated board with your own hands, the sheets must be laid evenly. You should not make a common mistake and lay, focusing on the end of the slope. You need to pull the cord along the eaves of the slope.

The corrugated board is fastened to the crate with special self-tapping screws. They are sold in different colors and have a sealing gasket that protects against water ingress. The calculation of the number of self-tapping screws can be made based on 5-7 pcs. per square meter. It is worth paying attention that the skate is screwed with screws of greater length.

When working on the roof, you simply need a screwdriver with replaceable batteries.

Installation of the end plate on the roof

After you have laid all the sheets of corrugated board on the roof yourself, you need to install wind strips to protect from the wind. The wind bar is attached to the end board and profile sheets. The step of fastening with self-tapping screws is about a meter. Please note that the end board is installed above the crate.

The usual length of the end plate is two meters. If you need to increase a small length, then overlap the planks.

You need to start from the overhang of the roof and move to the ridge, where we cut off the excess.

Roof ridge installation

Pay attention to the picture:

the sealant is laid if the corrugated sheet has a small corrugation
in case of laying, the seal must be ventilated
fixing step with self-tapping screws is not less than 30 cm.
the overlap of the ridge element on the corrugated board must exceed 10 cm.

Settling in a private house or in a country house, over time, homeowners construct outbuildings for various purposes. Sheds are built to store tools and inventory, picturesque gazebos are equipped for recreation, and garages or sheds are used to maintain a car. For the construction of these buildings, it is not advisable to hire professional workers; it is better to do the installation work with your own hands. This article will tell you what elements a shed roof made of corrugated board consists of, how to choose a slope, do the calculation and installation with your own hands.

A shed roof made of profiled sheet is an excellent option for a roof structure, which is used both for free-standing structures and for outbuildings. It is an affordable and inexpensive way to overlap with your own hands, which does not require special skills and abilities. Installation has the following features:

Note! Decking is a versatile material made by stamping sheet metal. It is covered with paint or a special polymer coating that protects against corrosion. The permitted slope of roofs for flooring this coating is 12-60 degrees. If the slope angle is less than 12 degrees, the installation is performed by sealing the joints between the sheets with thiokol sealant.

Create a project

The installation of a shed roof begins with the creation of a project and a scheme based on simple engineering calculations. Using trigonometric formulas, a calculation is performed by determining the angle of the slopes, the difference in the heights of the racks and the area of the roof. You can do the calculations yourself or enter the initial data into a special calculator program that will perform the calculation automatically. To determine the parameters of a pitched roof, the following formulas are used:

Important! The rafter truss of a shed roof made of corrugated board in the frontal projection is a right-angled triangle, the hypotenuse of which is the rafter leg. Installation of a shed roof with a hanging truss system is possible if the width of the structure does not exceed 6 m; for larger buildings, an internal main wall or column is required.

The result of calculating the parameters of a shed roof is a plan diagram, which reflects the calculated slope of the slope, the length of the rafter legs, the step between them and the dimensions that the calculation determined.

Assembly

Having, you can easily assemble a shed roof from corrugated board with your own hands. This will require a hacksaw for metal and wood, a drill, a screwdriver, a marker and a measuring rod, a construction stapler and fasteners. It is necessary to purchase lumber for the truss frame, waterproofing film and corrugated board of the desired color and relief in advance. The do-it-yourself installation technology is as follows:

Important! When installing corrugated board, you should correctly calculate the required number of self-tapping screws. Do not place fasteners too often, as moisture penetrating into them leads to corrosion, destroying the coating. If the screws are spaced too infrequently, the corrugated board can “pop” in windy weather, making loud noises.

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