Do-it-yourself roof repair with corrugated board

In detail: do-it-yourself roof repair with corrugated board from a real master for the site my.housecope.com.

Advantages of a roof made of profiled sheet: strength, reliability, resistance to weather conditions and corrosion, not very difficult installation.

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

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

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

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

Profiled sheets are divided into 3 classes:

C for fencing walls or making fences
H for ceilings and coverings, the best option for roofs
NS combined universal option.

Why is a class H profile best suited for roofing? It is the most durable and reliable due to its thickness and additional stiffeners, as well as increased corrugation. Due to this strength, it is possible to increase the steps between the battens of the battens. In addition to saving on fasteners, we will get fewer holes in the profile, which will have a beneficial effect on its resistance to corrosion. If the roof is sloping, then do not risk it and take this type of profiled sheet. Otherwise, the roof may not be able to cope with the pressure of the snow.

The only disadvantage of this corrugated board is the price.

If you have a lightly loaded roof and a large slope angle, then it is quite possible to get by with the NS class.

Do not forget, when calculating the number of profiled sheets on the roof, take into account the overlap on both sides. Additionally, flatten the overhang from the edge of the roof.

Video (click to play).

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

The horizontal overlap of the 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.
an angle of more than 30 degrees, an overlap from 10 to 15 cm.

The calculation of the roof overhang depends on the brand of the profiled sheet. The higher the profile height, the more overhang is needed. This is done to prevent moisture from entering under the overhang and, accordingly, rotting of the tree in the rafter system.

I will warn you against the mistakes of novice roofers: be sure to think over 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 you should know:

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

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

The moisture-proof film is attached to the rafters with a stapler. You need to do the styling from the bottom up. Thus, the upper sheets will cover the lower ones, and moisture will not get on the wood. It is imperative to check, after installation, the film for integrity and seal all the cracks with sealant.

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

Be sure to maintain a uniform distance in the manufacture of the lathing, for better fixing of the corrugated board. Usually the pitch is 0.5-1 meter.

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

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

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

First and foremost, each next professional sheet should cover the previous one. In this case, it does not matter the direction of laying, from left to right or vice versa.
With a sloping roof, you should overlap in two waves or use a longitudinal gasket from the seal.
On a steep roof, you can do without a seal and use a single wave overlap.
The order of laying the corrugated board depends on the type of roof. If the roof has two slopes, then the installation starts from the end. When installing a hip roof, start at the center of the hip.
A prerequisite, when laying the 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 ramp.

The corrugated board is attached to the crate with special screws. They are sold in a variety of colors and have a watertight seal. The calculation of the number of screws can be made on the basis of 5-7 pcs. per square meter. It is worth noting that the ridge is screwed with longer self-tapping screws.

After you yourself have laid all the sheets of corrugated board on the roof, you need to install wind bars to protect from the wind. The wind bar is attached to the end plate 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 battens.

The usual length of the end strip is two meters. If you need to build up a short length, then overlap the strips.

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

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
the step of fastening with self-tapping screws is at least 30 cm.
the overlap of the ridge element on the corrugated board must exceed 10 cm.

standard size of planks 2 meters
the overlap must be at least 20 cm.
fastening step with self-tapping screws, approximately 40 cm.
in the place where the plank is attached to the wall, you can use a strobe or close it with a paneling

If the roof is flat, then laying the seal between the top edge of the corrugated board and the abutment bar would be a good option. In this case, the longitudinal compactor will prevent the snow from getting into the gap. If you have a good roof angle, then there is no need for a seal.

Wear gloves. Otherwise, you could cut your hands during transport. The edges of the corrugated board are very sharp.
Raise and lower the profiled sheets carefully, otherwise you will damage the surfaces of other sheets with sharp edges.
Lift the corrugated board to the roof with at least three people. Two feed the sheet along wooden guides and one on the roof accepts. Place the guides well into the ground and set them at an angle to reduce the load.
Walk on the roof only in soft shoes so as not to damage the protective covering of the profile.
Walk only in places where the crate is.
In case of damage to the coating, scratches and chips, they must be painted over with a special paint for polymer coatings.

In conclusion, I want to say that corrugated board has many advantages:

it is durable and reliable
service life is measured in tens of years

However, do not forget that it will serve for a long time only with proper installation, in compliance with all recommended technologies.

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Increasingly, at the present time, corrugated sheets are used for arranging the roof. Decking is a galvanized sheet of steel, which, thanks to cold rolling, has a certain relief. This roofing material is easy to install, maintain and repair. Based on the fact that corrugated sheets are produced in a wide range of shades and colors, they can be used to create a unique roof design.

A roof made of corrugated board has the advantage of its durability, resistance to weather conditions, and easy installation of the structure.

But periodic repairs are necessary for any roofing material.

The service life of a roof made of corrugated board is from 40 to 50 years, and if the repair was needed much earlier, there may be two reasons.

First, you purchased low-quality corrugated sheets. Of course, this is a rather rare case, because there are certain state standards that this roofing material must comply with.

Second, the work of the roofers was done unprofessionally. If you are not sure that you can cope with the repair on your own, then it is best to invite qualified specialists. The estimate for the repair of a roof made of profiled sheets will depend on the total area where the repair needs to be carried out, on the qualifications of roofing workers and on the period of the repair.

Roof repairs made of profiled sheets are usually necessary due to leaks. This is primarily due to the quality of the roofing work.

Roof leak detection.

All roof repairs can be divided into specific stages of work. At the first stage, it is necessary to determine the reasons that caused the need to repair the roof. If this is a leak, then first of all you need to check the tightening of the self-tapping screws, with the help of which the sheets of corrugated board were fixed. For fastening profiled sheets, special self-tapping screws are used, which have a rubber gasket.

It is often enough to tighten the self-tapping screws a couple of months after the installation of the roof so that the leak disappears. But if such measures turn out to be ineffective, then it will be necessary to perform a more serious amount of work:

remove and replace roofing sheets;
replace or repair the roof screed;
replace cornices, parapets and aprons on the abutments;
perform an audit of the intake funnels.

Much attention should be paid to structural joints. Small cracks and scratches on the roof are sealed. Deep cracks or creases must be sealed with special mastic.

Particular attention should also be paid to rust. The formation of rust on the corrugated board "speaks" a lot. The most important thing is damage to the protective layer. The place of damage must be thoroughly cleaned of rust, then primed and opened with bituminous varnish. For these purposes, you can also use aluminum powder.

If the sealing of the contact points and the restoration of the surface did not bring positive results, then it is necessary to dismantle the damaged corrugated sheets. This will be the second stage.

The roof joint can be repaired with special roof sheeting.

This work is quite laborious, since it will be necessary to replace the old layer of thermal insulation, and it may be necessary to replace the sections of the grooves and rafters.

If you nevertheless decide to carry out the repair yourself, then you will need the following tools:

measuring tool;
screwdriver;
jigsaw (circular saw, electric shears);
hammer.

new sheets of corrugated board;
roofing screws;
timber for rafters (if necessary, replacement);
timber for the lathing (if necessary, replacement);
thermal insulation material (if necessary, replacement);
waterproofing material;
nails or screws with a wide head;
special sealant.

Roof ventilation scheme: 1) rafter leg
2) waterproofing
3) rafter bar (cantilever bar)
4) lathing.

When purchasing new material for the roof, it should be borne in mind that the sheets (best of all - painted) of the corrugated board must be completely flat. A deviation of no more than 5 millimeters is allowed. The material must be transported very carefully so as not to damage the protective coating. Each sheet must be transferred separately.

When carrying out repairs, dismantle the old material first. Then carefully check for damage to the rafters. As a rule, waterproofing material is also damaged, so this must be taken into account when purchasing materials for roof repairs. If the crate is rotten, then it must be replaced with new beams.

After replacing all the wooden elements on the inside of the rafter system, we attach a vapor barrier film. This can be done with nails or screws with a wide head.

Now we go directly to the installation of profiled sheets. Installation can be started from any edge of the roof, but according to experts, it is better to start from the bottom edge. We cut the material into sheets of the required size. If you do not have a jigsaw, then for these purposes you can use either a circular saw or electric shears, or you can do this with a hand hacksaw. But it should be remembered that under no circumstances should you use a "grinder". It will be most correct if you cut the sheets of corrugated board at the place of purchase of the material, since there are special tools for this, and this work will be done much better.

After lifting the sheet to the roof, fix its upper edge with a self-tapping screw. There is no need to repeat the most common mistake - do not fix the sheet immediately firmly, as this will only complicate your work. We lay two more sheets, check if the lines of the ends of the sheet and the line of the ridge coincide. If everything matches and the edges are even, only then can the sheet be finally fixed.

When working with corrugated board, there is one main rule. It is necessary to take into account the distinctive features of the material - the corrugated board is mounted with an overlap. Sufficient reliability of the roof will provide overlap in one wave. However, it may be that the size of your roof is large enough. In this case, it is necessary to lay the sheets of corrugated board in several rows. In this case, the second row should be staggered.

The scheme of laying sheets of corrugated board.

It is necessary to process the edges of the sections and the places where the roofing screws will be screwed. For these purposes, you can use a special enamel, which is designed for processing polymer coatings. This is necessary so that the metal does not corrode in the future.

When fixing new sheets of corrugated board, it should be taken into account that they must be fastened above and below with a distance of at least one wave. Fastening in the middle of the sheet is staggered. Overlapping material is upward waves.

At the end of the repair work, to improve the sealing of the roof, the joints of the sheets can be treated with a special sealant.

When working with corrugated board, you should take into account some of its features:

It is forbidden to work with corrugated board in strong winds.
All wooden products that will be replaced must be treated with an antiseptic solution.
Since this material is noisier in comparison with roofs made of other materials, a layer of sound insulation must be present in the roofing pie of a roof made of corrugated board. This work is not difficult at all, but it will significantly increase the comfort inside the room.
Another feature of this material is the attraction of atmospheric electricity. During a thunderstorm, this phenomenon is quite dangerous. Based on this, a roof made of profiled sheets should have lightning rods. They will make your home safer.
After completing all the repair work, it is recommended to paint the roof with oil paint. This is a very effective and affordable measure to protect it. Actually, this is where the repair of the roof from profiled sheets ends.

In conclusion, it should be noted that with the rapid development of the method of roofing from corrugated board, the cost of working with it is gradually falling. The cost of repairing a roof from profiled sheets is recalculated based on the total area of repair work.The roof is an important element of the building, on the correct installation and high-quality coating, which depends on the safety and durability of the entire structure. There is a huge selection of products for roofing on the building materials market, among which corrugated board occupies a leading position. The article will talk about how to properly cover the roof with corrugated board with your own hands. It is worth saying that the technology itself is simple if you know the features of this material and follow some installation rules.During production, a metal sheet passes through a special rolling equipment, which creates a profile of various heights from 8 mm to 75 mm. Wavy, rectangular and trapezoidal profiles provide additional rigidity. Thanks to this, the corrugated board easily withstands mechanical damage and high loads.

Galvanized coating makes this material reliable and durable. He is not afraid of chemically aggressive substances, corrosion, precipitation (weather conditions).

Profiled sheeting is one of the few materials that is easy to install and easy to transport.

Roofing works with profiled sheets are faster than with other materials. This significantly saves not only time, but also money.

During the production process, the profiled sheet is covered with a colored polymer, such a coating serves as an additional protective layer and gives an attractive appearance. This allows you to choose this roofing material in any color in accordance with the general type of building.

The installation of profiled sheets depends on the slope of the roof, the minimum slope is at least 12 °. At the end of the work, the working seams should be sealed using mastic or sealing tape.

tilt up to 15 ° - adjacent sheets are mounted with an overlap of 200 mm;

tilt up to 30 ° - the overlap in this case is equal to 150-200 mm;

tilt more than 30 ° - the permissible overlap is 100-150 mm.

Before calculating the amount of material required, you should measure the roof. Because, at the stages of project implementation, roof ramps may undergo changes.

To do this, you need to measure the slopes diagonally and compare these values, the discrepancy should not exceed 20 mm. It is also necessary to check the plane of the slopes, such a measurement is performed with a level with a cord, where for every 5 m a deviation of no more than 5 mm is allowed. Otherwise, the sheets will not join.

Ideally, if the length of the sheet will correspond to the length of the slope, it is necessary to add about 40 mm to this parameter for the overhang of the eaves. Next, the amount of corrugated board is calculated, where the length of the eaves is measured and divided by the mounting width (taking into account the overlap) of the sheet.

You can also count the number of sheets in another way, divide the length of the cornice by the indicator of the useful (overlap is not taken into account) width of the sheet, and round the resulting value up.

If the roof has a complex configuration, then it should be visually broken down into geometric shapes. Each form is calculated and the final results are summarized. It is important to consider when calculating the material and such additional elements as: windows, pipes, ends, ridge.

The roofing structure, in addition to the coating itself, consists of a whole complex of structural elements such as: heat, hydro, vapor barrier and ventilation. Each of them fulfills its role, ensuring the correct operation of the entire roof.In order for the roof to serve for a long time and perform its direct function, it is necessary to ensure the correct location of all layers of the pie.Vapor barrier. Its task is to prevent the penetration of moisture into the insulation. Here, special films are used, the laying of which is carried out from the inside of the roof with a construction stapler along a horizontal line. The seams formed during installation are glued with tape or butyl tape.Insulation... The next layer consists of insulation, which serves as a compensator for the difference in air temperatures, thus, it prevents the accumulation of moisture and condensate under the roof during the operation of the building. Its thickness is selected depending on the region of residence, it is recommended to use insulation with a thickness of at least 200 mm. Tiled or rolled material is laid in the space between the rafters.Waterproofing... The final stage is the installation of a waterproofing membrane (wind protection). It acts as an additional insulation and, thanks to its waterproof surface, protects the entire structure from condensation, thereby extending the life of the roof.The membrane is rolled horizontally from the eaves to the ridge (bottom to top). Positioning it in such a way that the joints of the rolls are on the rafters, it must be fastened with an overlap of 150 mm.The material for hydro and thermal insulation is calculated in the same way as the number of profiled sheets.

the sheets are lifted to the roof using a log of one or two boards of the required length;

it is not recommended to carry out work in windy weather, as there is a possibility of missing the sheet and damage it;

during work, you should move along the profiled sheets in soft shoes, stepping only into the deflections between the waves in the places of the crate;

it is possible to avoid the formation of corrosion on the material if all cuts or other damage to the sheet are treated with repair enamel;

when working with corrugated board, it is necessary to use thick protective gloves, since the edges of the sheets are quite sharp;

debris generated during installation should be swept away with a brush or washed with soapy water;

the protective film of the material must be removed immediately after installation;

it is forbidden to use a grinder (grinder) in order to avoid the development of a corrosive process.

lever shears or electric shears for cutting sheets;

a screwdriver for fastening the material or a hammer if fasteners will be made with nails;

construction stapler for fixing films and insulation;

drill and drill No. 5, if the profiled sheet will be attached to a metal structure with a thickness of more than 2.5 mm;

and such auxiliary tools as: marker, knife, level, tape measure, sealant gun.

Decking. To cover light roofs with a slight slope, C35 or C44 profiled sheets of sinusoidal or trapezoidal shape can be used.Their length is from 2 to 6 m, but some manufacturers offer the manufacture of sheets for individual sizes from 0.5 to 12 m and more.The arrangement of the pitched roof is recommended to be made of corrugated board of the CH35 brand, such a model is better suited for these purposes. Professional sheet of grade N is used for equipment of supporting structures. Its profile height can be from 57 to 114 mm.Self-tapping screws. This polymer coated fastener is matched to the color of the sheet. Thus, it is as invisible as possible in the architectural ensemble. They are chosen depending on the material: wood and metal. Its drill bit allows for fastening to a metal structure, the thickness of which does not exceed 2 mm. When buying self-tapping screws, it is necessary to check the presence of a sealing washer (neoprene rubber).Sealant. To seal the gaps, for example, between the ridge and the roof covering, you can use a special seal.It prevents debris and moisture from entering the roof space by repeating all the bends of the profiled sheet.The ridge is semicircular or rectangular. Performs both a functional (protects the joints between profiled sheets) and a decorative role. The ends of the semicircular ridge are covered with special plugs.Wind bar. It prevents rain from falling on the walls of the building and gives the roof a finished look.Depending on the complexity of the roof structure itself, the following additional elements will be needed:

Upper and lower valleys. The bottom bar prevents rainwater from entering the under-roof space. Upper valley - serves as a finishing detail, giving the finished look to the roof.

External and internal corner. With the help of them, the sheets are connected at the outer and inner corners.

The lathing for laying with corrugated board can be solid or stepped. The smaller the slope of the roof, the smaller the pitch of the lathing, for example, if the slope is less than 15 °, then wooden or metal strips are mounted at a distance of 300-400 mm, with a roof slope over 15 ° - the step can be 500-600 mm or more.

They always begin to mount the profile sheets from the bottom up, while moisture (rain or formed from melting snow) does not get into the space between the sheets. Such wavy material is laid against the direction of the prevailing wind in the area. If the wind blows more often from the right side, then the installation of the profiled sheet should be laid from left to right, and vice versa. In what sequence it is correct to cover the roof with corrugated board is shown in the photo.

If the length of the slope allows the use of a solid sheet, then installation begins at the end of the roof. It is necessary to align it along the cornice, not forgetting about the additional 40 mm (overhang of the cornice), the alignment of the corrugated board along the edge of the end is not allowed.

The first roofing sheet is installed in place and secured with one self-tapping screw approximately in the center. The second one is laid with an overlap on the previous sheet and is attached in the same way. Having fixed the required number of sheets along the entire length of the roof, they are aligned along the horizontal line of the cornice. Further, it is necessary to connect the corrugated board to each other at the ridge in every second wave deflection.

After that, the final fasteners are performed:

self-tapping screws are screwed along a vertical line through a step of the crate;

horizontally - in every second deflection of the profile sheet;

from the end of the roof, it is advisable to strengthen the sheet at the step of the sheathing;

the upper edge of the sheet (at the ridge) and the lower (on the cornice) - in each deflection of the wave;

it is recommended to strengthen the joint between the sheets with hardware, both on the wave and on the deflection of the sheet.

Excess material is cut using an electric shears or an electric saw. Similar manipulations are performed from the ends of the structure and on the other side of the ramp, if we are talking about a gable roof.

At the next stage, the end plate is installed and fixed into the crest of the wave using the same self-tapping screws. Its installation starts from the bottom towards the ridge of the roof. When increasing the length of the strips, the overlap should be at least 50 mm, the fastening step should be up to 1 m.

At the end, the ridge is fastened. It is recommended to insert a self-adhesive sealant between it and the profiled sheet. The ridge strips are built up with an overlap of 100 mm, the fastening step is at least 300 mm.

Complex structures often have internal corners (ends), ventilation or chimneys, parapets and so on are located on the roofs. The formed joints must be carefully sealed, since moisture can get into the under-roof space through such places.End. At these points, a continuous lathing is required on both sides of the groove. The lower (bottom) strip is attached at the edges with self-tapping screws or nails; when it is lengthened, an overlap of 200 mm is required. A bend (flanging) is made from the upper end of the plank at the ridge of the roof.It is recommended to install a sealant between the strip and the corrugated sheet or to seal with a special mastic. The final fastening of the valley strip takes place simultaneously with the roofing material.The upper bar is installed on top of the profiled sheet, rather carrying a decorative role, closing the joint between the edges. It is advisable to install it also with the use of sealing materials that protect the assembly joints from possible leaks.Pipe. The lathing around the pipe should be solid, where the abutment bar (apron) is attached to the chimney with dowels (step 200 mm), and to the lathing with self-tapping screws.The installation of the lower apron can be performed by pre-grooving a groove on the brick pipe, with the obligatory sealing of this joint. A roof covering with a sealant is mounted on top of it. The top bar is installed without grooving, after finishing the installation of the coating around the pipe. The installation of both longitudinal and transverse abutment of the pitched surfaces to the wall is carried out in the same way.Many manufacturers are ready to make additional elements of non-standard shapes, so difficulties associated with the installation of roofing materials on complex roofs will not arise.More clearly how to cover the roof with corrugated board is demonstrated in the video presented.

Covering the roof with corrugated board is within the power of every craftsman - you just need to follow the technology

The process of installing corrugated board with your own hands can be divided into three stages:

Next, in order, we will consider how to properly cover the roof.

First, you need to count the number of sheets of material. To do this, first measure the area of the roof.

The calculation of the amount of corrugated board is carried out according to the simple formula K = Skr. / Sl. + 10%, where:

K - the number of sheets of corrugated board;
Scr. - roof area;
Sl. - the area of one sheet of corrugated board.

The professional sheet can be of various sizes.

A stock of material (10-15 percent of the total) is necessary, since during the installation of corrugated board, waste will certainly remain. In addition, you need to provide an overlap in width and length.

If the length of the slope corresponds to the width of the corrugated board, then it is even easier to count the number of sheets - the length of the slope must be divided by the width of the sheets, then multiply the resulting value by the number of slopes and add 10% of the total number of sheets.

The durability of the roof largely depends on the observance of the technology of installation of waterproofing and lathing

In addition to the roofing material, you will need the following materials:

Wooden slats. Section 20x30 mm;
Boards. 50x30 mm;
Waterproofing membrane.
Additional elements. These include ridge profiles, wind bars, valleys, abutment bars, etc.;
Sealing tape for corrugated board;
Self-tapping screws for corrugated board with gaskets. They are matched to the color of the roofing material, which makes them invisible on the roof.

It is very easy to calculate the required number of battens for a counter-lattice. Calculate the total length of the rafters (multiply the length of one rafter by their number).This should be the total length of the rails (divide the length of the rafters by the length of one rail).

Boards are mounted along the length of the slope. The lathing step should be 500-600 mm. If the angle of inclination of the slope does not exceed 15 degrees, it is necessary to reduce the pitch of the lathing to 300-400 mm, since the load on the roof will increase.

Before covering the roof with corrugated board, it is necessary to waterproof it and to carry out the lathing correctly. This operation is carried out as follows:

Attach the first strip of foil to the rafters, positioning it across the ramp. Use a stapler to fix the film;
When installing subsequent strips, provide an overlap of about 15-20 cm;
Glue the joints of the waterproofing with duct tape.

Cut the slats along the length of the rafter legs;
Fasten the slats to the rafters with nails or self-tapping screws.

Nail the board to the counter-lattice, aligning it with your own hands along the lower edge of the ramp;
Step back from the first board 300-600 mm, and nail the second board parallel to it. This is how the lathing is performed up to the ridge itself. Thus, create a crate on all roof slopes.

During the installation of the battens, its alignment may be required, since differences of more than 10 mm are unacceptable. Place blocks of wood under the boards for leveling.

At the junction of the slopes, where the valleys will be mounted, as well as along the perimeter of the passage of the chimney and ventilation pipes, it is necessary to make a continuous crate, i.e. with zero step.

Bring the boards of the crate out of the pediment by 40-60 centimeters;
Connect the overhang boards with a transverse beam or boards, as shown in the photo.

When the temperature drops, the waterproofing film is strongly stretched. Therefore, during its installation, be sure to ensure the sagging between the rafters by a centimeter and a half.

Roofing with a profiled sheet is carried out as follows:

Align the first sheet with the edge of the ramp;
Provide an overhang of the profiled sheet of about 40 mm;
Secure the sheet with self-tapping screws.

If several sheets will be stacked along the width of the slope, work from the bottom up.

Lay the second profiled sheet so that it overlaps the first one by one wave;
Align the sheet along the edge of the ramp;
Connect the second sheet with the first by screwing the self-tapping screws into the top of the wave with a step of 20 cm. The self-tapping screw should not touch the crate;
Attach the second sheet with self-tapping screws to the crate.

Thus, the entire first (bottom) row of sheets is mounted.

Before fixing the top sheet, lay a sealing tape on the section of the transverse joint, as shown in the photo example;
Lay the first sheet of the second row with an overlap of 100-200 mm on the lower one, depending on the angle of inclination;
Align the sheet with the edge of the overhang;
Secure the sheet with self-tapping screws.

At the junction of the slopes, secure the lower valley with self-tapping screws;
Lay the sheets of corrugated board so that they hang over the end strip by 10 centimeters. Between the corrugated board and the strip, be sure to lay a sealing tape;
Attach the upper valley to the profiled sheets by screwing self-tapping screws into the upward waves of the corrugated board.

A groove is made along the perimeter of the pipe for the side of the abutment bar;
Around the pipe, a lower abutment bar is attached, the side of which is inserted into the groove. The junction must be sealed with a heat-resistant sealant.
Around the pipe, the profile sheet will be laid according to the standard scheme;
An upper abutment strip is attached on top of the roof covering. Its joint with the pipe must also be sealed.

If the pipe is round, you need to use a special bushing of the corresponding diameter, which is put on the pipe.

Put a ridge bar on the junction of the slopes;
Place a sealing tape under the strip;
Fix the ridge bar with self-tapping screws;

Along the perimeter of the overhangs, fasten the wind strips with self-tapping screws;
Then fix the gutter system and other roof accessories, if any.

You can also use a special repair enamel for corrugated board and metal tiles, although its price will be slightly higher.

This completes the installation of the roof.

Finally, I will share with you some important rules and tips that will help you properly cover the roof with corrugated board without any particular difficulties:

Work in calm weather. The corrugated board is lightweight, therefore, with gusts of wind, it can be difficult to hold the sheet even for two people;

Two logs will greatly simplify the process of lifting the profiled sheet to the roof

Lift the sheets gently. To raise the corrugated board to the roof, install two beams or two boards on which the corrugated board can slide like on rails. In this case, the likelihood that you drop the material is reduced;
Move carefully over the roof covering. Use soft shoes, and try to step on the lower wave when moving on the roof;

The screws must be staggered

Install screws correctly. Fasteners are screwed into the bottom wave, with the exception of the joints of the sheets with each other.

From the edge, screws must be screwed into each wave. Then they are staggered across the wave. Place them vertically across the lathing step.

Try to keep the self-tapping screw strictly perpendicular to the crate;

In the process of cutting the corrugated board with a grinder, the polymer coating is melted - this reduces the durability of the material

Cut the material correctly. For these purposes, you can use metal scissors, a jigsaw or a hacksaw for metal. But it is forbidden to cut sheets with a grinder, as it damages the protective coating.

To increase the durability of the material, the sections of the sheets must be painted over.

Another important point is the transverse overlap, which, as I said above, depends on the slope angle of the ramp:

Up to 15 degrees - 20 cm;
Within 20-30 degrees - 15 cm;
More than 30 cm - 10-15 cm.

Here, in fact, is all the information on how to properly cover the roof with corrugated board with your own hands, which I wanted to share with you.

Video (click to play).

Now you know how to cover the roof with corrugated board, and you can cope with this work without specialists. Watch the additional video in this article. If you have any questions, write in the comments, and I will be happy to answer you.