How to make a roof from corrugated sheets with your own hands. Do-it-yourself roofing with corrugated sheets. Installation of corrugated sheets on the roof. We cover a broken roof

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

Advantages of profiled steel sheet:

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

Which corrugated sheeting is suitable for the roof

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

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

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

What you need to cover a roof with corrugated sheets yourself

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

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

How much material will be needed

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

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

Tools and fastening materials for work

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

Features of laying roofing from corrugated sheets

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

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

Installation of sheathing under profiled sheets

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

They do this in two ways:

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

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

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

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

The procedure for laying corrugated sheets with your own hands

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

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

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

How to attach corrugated sheeting to the roof correctly

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

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

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

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

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

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

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

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

Installing a ridge on corrugated sheets

Ridge additional elements for corrugated roofing are produced

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

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

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

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

One of the most inexpensive, durable, practical options roofing material- or, as they also say, a profiled sheet, a metal profile. This is a sheet of metal that is coated with several protective layers and then passed through a forming machine, which presses ridges and grooves into it to give it greater rigidity. The material turns out to be quite light; a roof made of corrugated sheets can be installed independently and even “with one hand.” The technology is not the most complicated, it is quite possible to do it yourself.

Types of corrugated sheets

There are different types of corrugated sheets. There is a regular profiled sheet - galvanized, and there is a colored one - with a layer of polymer applied over the zinc coating. The polymer coating has a dual role - it both protects from external influences and gives the material a more decorative appearance. Simple galvanized corrugated sheeting is used as a roofing material mainly on temporary buildings, while colored sheeting has a quite solid appearance and can be seen on the roofs of residential buildings and courtyard buildings.

By purpose

Corrugated sheets are made from sheet metal of different thicknesses. The thinnest ones are intended for decorating walls, but can be laid on the roof with frequent lathing and light snow loads. The sheets of this group are marked with the letter “C”.

The thickest metal is used to make material with increased load-bearing capacity. It is marked with the letter “N” and is used as a roofing material in areas with high wind or snow loads. There is also a universal profiled sheet - it is designated “NS”. Can be used both for walls and for roofing (the amount of snow should be average).

After the letter coding of the profiled sheet there are numbers: C8, H35, NS20. They indicate the height of the wave in millimeters that is formed in this material. In the example, these are 8 mm, 35 mm, 20 mm, respectively. Corrugated sheeting with a wave height of at least 20 mm is laid on the roof.

The wave shape of the supporting metal profile is often more complex - additional grooves are added to it to increase rigidity.

By type of coverage

Despite all the external similarities, the price of corrugated sheeting of the same type can differ significantly. The point, most often, is not the arrogance of the manufacturer or seller, but the different technologies and materials used in production. For example, the protective coating can be zinc or zinc-alumina. The second type of protection has appeared recently; the equipment is expensive, but the durability of metal coated with aluminum-zinc is much higher.

The durability of the coating is also affected by the method of wave formation. There are two technologies - cold rolling and emulsion. During cold rolling, the sheet is simply pressed through rollers without any preparation. To avoid damaging the previously applied coating, expensive equipment is required. Accordingly, cold rolled corrugated sheets are more expensive.

When forming a wave with an emulsion, the metal surface is moistened with a liquid (oil, water, special liquid) and then sent under rolls. If, after rolling, such a sheet is not dried, but sent to a kiln to fix the paint, then the places that were wet will quickly begin to rust. It is impossible to see this defect in advance; you have to hope that the technology is not broken. But profiled sheets made using this technology are cheaper.

There are also different polymer coatings. They create films of different thicknesses and densities, with different properties.

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

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

How to lay corrugated sheets on a roof

The corrugated roofing is laid on a finished sheathing of boards, in which the fragments are located parallel to the roof overhang. The sheathing installation step is up to 60 cm. They usually use an inch edged board, 25 mm thick. The sheets are laid one after another with vertical overlap in one wave. When laying corrugated sheets on the roof, please note that the outermost shelves have different lengths. The one that is a little shorter should be on the bottom, the one that is a little longer should cover the short one. In this case, they adjoin one another tightly, without a gap. If you mix it up and do the opposite, a gap of several millimeters will form between the two shelves, into which water will flow. Therefore, be careful when installing.

About the amount of horizontal overlap. If there are more than one rows of corrugated sheets on the roof, the sheets are laid with an overlap. The amount by which the top sheet overlaps the bottom sheet depends on the angle of the roof slope: the flatter the roof, the more approach is required.

Most factories that produce corrugated sheets can offer you to make sheets that will cover your entire roof - from ridge to eaves - in one long sheet ( maximum length 12 meters). This creates certain difficulties during installation - such sheets are difficult to lift and lay. It will especially take a long time to expose the first sheet - it must be placed strictly vertically, which is a difficult task at altitude. But the main advantage of this solution is a continuous coating from top to bottom, which significantly increases the degree of protection of the attic space from moisture penetration, negating all the inconveniences. After all, there are no horizontal joints, which means there are no problems with wicking either.

How to properly attach corrugated sheeting to the roof

To fasten the corrugated sheets, use special self-tapping screws with rubber gaskets under the caps. They ensure the tightness of the connection. Such self-tapping screws are usually painted the same tone as the roofing material. The amount of fasteners per square meter is 5-7 pieces (do not forget to add about 20% for fastening the ridge element, securing joints and other similar work).

Install self-tapping screws into the bottom flange, where the sheet comes into contact with the sheathing. Their length is 20-25 mm, depending on the thickness of the sheathing board, since it is important that the sharp end of the screw does not protrude from reverse side boards. There will be a waterproofing film there that may be damaged.

When connecting two adjacent sheets, they are also fastened with self-tapping screws. But in this case, you have to screw the fasteners into the wave and also pierce the double layer of metal. For these purposes, the fasteners are longer - 40 mm or more (depending on the height of the wave) - the screw must go into the sheathing board.

What to cut

It is very rare that corrugated sheeting is installed on a roof without trimming - these are simply unique cases. How to cut profiled sheets? Metal scissors or jigsaw. Yes, it’s slow and not entirely convenient, but that’s what the manufacturers advise. You cannot use an angle grinder (grinder) - when cutting with it, the sheet heats up to very high temperatures at the cut site. high temperatures, which leads to the evaporation of zinc. As a result, in this place, the material quickly begins to rust.

Installation procedure

After assembling the rafter system, they nail the front board, hooks are attached to it for installation, and on top of this there is a special strip - a drip edge, onto which the edge is then placed waterproofing film. Both the dropper and the film are attached to it with self-tapping screws with a sealing rubber washer.

The composition of the pie of materials for corrugated sheets depends on whether you are going to attic space make it cold or warm. If the attic is cold, the sequence of actions is as follows:

If you insulate the roof, the order of work and the amount of materials required will change. There will be more layers:

Corrugated roofing: components

Even when installing a conventional gable roof, there are several difficult sections that usually form at the junction of different planes and/or parts of the system. These areas are usually called “nodes”. We examined one such unit in the previous paragraph - the design of the front board and the fastening of gutters. But this is far from the only node where detailed explanation is required.

Installation and sealing of the ridge

The under-roof space under the corrugated sheeting should be well ventilated. This material heats up quickly and cools down just as quickly, which promotes the formation of condensation. Therefore, when installing a metal profile on the roof, in the upper part the sheets on both sides are not joined tightly, but leave a gap of several centimeters - so that the air can freely escape, taking with it water vapor.

If there are special skates with ventilation (in the photo), but even if you just install a regular ridge element between the profiled sheet and its edge, it turns out a large number of holes - in each depression of the corrugation. The size of this gap depends on the height of the wave - the higher the wave, the larger the gaps are. On the overhang, where the front board is nailed, there are also similar holes. Air movement usually goes from bottom to top - from the overhang, through the under-roof space (for this purpose, when installing the roofing material, it is necessary to leave ventilation gaps, which are formed by the sheathing), to the cracks in the ridge. This is how ventilation and moisture regulation of the insulation occurs, condensation evaporates and is carried away.

Large gaps are good for ventilation, but when it rains/snows with the wind, precipitation clogs them, and dust and leaves get into the attic through them. It is much worse if the holes become clogged with leaves - ventilation will immediately deteriorate. To avoid getting into a similar situation, previously approximately 2/3 of the gap height was filled with sealant, applying it in layers to the roofing material. Crawling back and forth with sealant on the top of the roof, waiting for the previous layer to polymerize a little, is not very convenient. This solution is also incorrect from the point of view of ventilation - the gap decreases and air movement worsens. But there was no other solution. Now it is there - a sealant for corrugated sheets. It is made from foamed polyurethane, polyethylene or wood composite. The structure of these materials is porous and allows air to pass through well, but not dust, water or leaves. In shape it either repeats the shape of the corrugation - there is one for different types of corrugated sheets, and there is also a universal tape, which in the right places just snuggles.

The seal “sits” on sealant, double-sided tape, glue, there are options with self-adhesive tape. With this compaction, air passes freely, and precipitation remains in the outer layers, from where it later evaporates.

Finishing the overhang with corrugated sheets

In order to cover the overhang with corrugated sheets, a special profile is attached to the front board. A profiled sheet cut into strips of the required width is inserted into its groove. The second edge of the hem is attached to a board nailed to the ends of the rafters. The joint between the filing and the board is closed with two droppers - one is nailed from below, covering the lower half of the board, and the second - from above. The edge of the waterproofing film is then placed on it.

If a drainage system is to be attached, then the hooks for the gutters are nailed after installing the lower drip line. The top dropper is nailed after installing all the hooks.

Connecting corrugated sheeting to the wall

In some cases, a roof made of metal profiles is adjacent to the wall of a structure. How to make a connection so that there are no leaks? There are two options (see picture). Both use a corner strip, only this one has different size and different profile.

You can take a corner strip with shelf dimensions of 150*200 mm. The shorter side is placed on the wall, and the longer side is placed on the roof. They are attached to the wall using fasteners depending on the material from which it is made (nails or self-tapping screws if it is wood, dowels if it is brick and building blocks). The joint between the planks and the wall is sealed with silicone sealant. From the roof side, the plank is attached to the crest of the wave, installing special self-tapping screws with rubber washers. Their length is determined in the same way as when connecting adjacent sheets of corrugated sheets (wave height + 20 mm for entering the sheathing board).

The second option is more labor-intensive: a groove (groove) is made in the wall, into which a corner strip with shelves bent at 45° is inserted. The fastening in this case is similar, the difference is in the size of the bar - it can be 100*100 mm or so.

Pipe passage

Many questions arise when sealing the passage of a chimney pipe or ventilation through a corrugated roof. The cross-section of pipes is round and rectangular; each type has its own solution.

For the passage of round pipes through the roofing material, there are special steel or polymer aprons. Their upper part is made in the form of a cone, the lower part - the skirt - is made of elastic material that can take a given shape. The apron is placed tightly on the pipe and lowered so that the “skirt” rests on the roofing material. Next, you need to give the elastic skirt a corrugated shape. Use a hammer for this (regular or rubber - depends on the type of apron). To prevent water from flowing under the skirt, coat the joint with sealant and press it well.

After securing the skirt, fix the neckline. If the apron is metal, cover the top with a clamp, tighten it, and coat the joint with sealant. When using a polymer apron (master flush), it is put on the pipe with considerable effort (sometimes you even need to lubricate the pipe with soapy water), but the joint, nevertheless, is sealed with sealant for reliability.

With a rectangular (brick) pipe, everything is somewhat more complicated. Elements are cut out of metal sheets to cover the joint with the roofing pie.

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

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

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

Advantages and disadvantages of corrugated sheeting as a roofing material

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

TO positive qualities This material includes the following:

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

Negative qualities corrugated sheets can be called:

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

Choice corrugated sheeting for roofing

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

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

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

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

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

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

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

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

The coating consists of numerous protective layers, the diagram offered to your attention clearly shows which layers cover the outer and inner sides.

External side of roofing material:

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

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

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

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

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

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

Prices for various types of corrugated sheets

Corrugated sheet

How to avoid damage during transportation and installation of material?

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

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

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

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

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

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

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

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

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

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

To ensure installation proceeds accurately, without unnecessary damage to the roofing material, you need to use only quality tools. To work you will need:

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

It is forbidden to cut corrugated sheets with a grinder. Optimal tool For this purpose - electric scissors

Features of installing corrugated sheeting as a roof

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

Influence of roof slope on installation

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

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

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

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

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

The procedure for securing sheets

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

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

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

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

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

Rules for fastening corrugated sheets

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

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

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

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

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

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

Installation of additional elements

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

Additional roofing elements include ridge, valleys, lining of pipes passing through the roof, eaves boards and others.

Skate attachment

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

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

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

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

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

Use it in our article.

Finishing the gable part of the roof from corrugated sheets

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

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

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

Attaching the cornice

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

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

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

Installation of the valley

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

The endow consists of two parts - internal and external.

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

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

• After that outer part The valley is screwed with self-tapping screws to the corrugated sheet.

Fastening snow guard

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

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

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

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

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

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

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

Seals for corrugated sheets

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

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

Designing the passage of a pipe through corrugated sheeting

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

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

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

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

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

General sequence of roof covering with corrugated sheeting

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

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

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

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

Video: important nuances when laying corrugated sheets as a roof

The roof is one of the most important elements of a building. The reliability and service life of the entire building depend on its correct installation. Commercial network building materials has a large selection of roofing products. Profiled flooring is in a leading position. The technology for laying corrugated sheets is not difficult. Before starting work, you need to familiarize yourself with the features of this material and the rules for its installation.

Profiled flooring is universal material, which has found its application in the construction of fences, light structures, finishing of wall and roof coverings. Blanks are used even in bold experiments in the absence of experience in roof construction.

Description of material

The corrugated sheet is made from cold-rolled steel raw materials and coated with polymer protection. The height of the workpiece profiles can be 8-75 mm. Wave, rectangular and trapezoidal shapes provide additional rigidity. Corrugated sheeting can withstand mechanical stress and high loads.

Advantages of profile flooring:

1. The optimal thickness allows you to withstand intense wind loads.
2. Resistant against rain, snow, corrosive stains and the damaging effects of aggressive substances thanks to paint and galvanized coatings.
3. No difficulties when installation work Oh.
4. Convenience during transport.
5. Light weight, placing little load on the foundation.
6. The ability to choose from a palette of shades of polymer coating gives individual appeal to the roof.
7. Low price compared to other coatings used for roofing.

After cutting the workpieces to specified sizes, it is necessary to treat the cuts with a special anti-corrosion primer to extend the service life of the covering corrugated sheet.

A lightweight roof with a slight slope is covered with NS 35 or C 44 blanks with a trapezoidal or sinusoidal profile.

The length of one sheet is 2-6 meters, or you can order the production of corrugated sheets with individual dimensions of 0.5-12 meters.

The pitched roof is covered with elements of the most common brand NS 35 - profile height 57-114 mm. The letter “H” denotes flooring used for load-bearing structures.

To get a more detailed idea, you can watch the video:

Required Additional Items

The selection of self-tapping screws with a polymer coating is made according to the color of the main corrugated sheet and its structure. The tip in the form of a drill makes it possible to use it in working with metal structures having a thickness of no more than 2 mm. Self-tapping screws are sold complete with sealing washers made of neoprene rubber.

Get tips on the right choice self-tapping screws can be used when watching the video:

When sealing the under-roof space, in particular, to seal the ridge, a special sealant is used that follows all the bends of the corrugated board. The function of the ridge is to provide protection for joint connections, as well as to create decorative decoration roofs. The ends of the skates are inserted into special plugs.

The installation of corners is carried out for the purpose of connecting corner parts.

Selection of tools

Before you do it yourself, you need to prepare mandatory set tools:

• laser construction level;
• long tape measure;
• construction knife;
• marker or pencil;
• metal scissors;
• high power screwdriver;
• construction stapler and staples for it;
• electric drill;
• hammer;
• sealant gun;
• fastener

Providing roof slope

Buildings are constructed with a mandatory roof slope of at least 12˚. Depending on the angle of inclination, installation is carried out with overlapping edges of adjacent parts:

• less than 15˚ - overlap is 200 mm;
• less than 30˚ - 150-200 mm;
• over 30˚ - 100-150 mm.

In areas of overlap, the seams must be sealed using mastic or sealing tape.

Preparatory calculation work

At the first stage, measures are taken to measure the roof:

The length of the slopes along each diagonal is determined, and the planes are checked in parallel using a level.

The estimated length of the workpiece should correspond to the roof slope plus 40 cm for the overhang.

The required number of profiled sheets is determined using simple mathematical calculations, not forgetting to add tolerances on the size of the edge overlaps.

For complex roof geometry, calculations are made for each unique figure, and then the sum of the results obtained is determined. When calculating the amount of corrugated sheeting, you need to remember about ridges, pipes, windows, ends, etc.

Roofing pie device

In addition to the covering layer, roofing composition has several required elements:

• thermal protection;
• waterproofing;
• vapor barrier layer;
• ventilation.

The calculation of each layer is made using a method similar to determining the number of profiled sheets.

Features of laying corrugated sheets

Laying of profiled flooring is carried out in compliance with simple rules:

1. When raising the flooring upward, wooden logs are used.
2. The work is carried out in calm weather to prevent damage to the sheets if they accidentally fall.
3. It is possible to move along the profile only along the deflections of the waves in the area of ​​the sheathings.
4. Places of cuts or other violations of the integrity of the corrugated sheet are treated with special enamel to prevent metal corrosion.
5. It is recommended to use thick protective gloves to avoid injury from sharp edges.
6. Remaining debris after installation work is swept away with a brush or washed with a soap solution.
7. The installation of the roof covering is completed by the mandatory removal of the packaging film.

Algorithm for covering a roof with profile decking

The elements are laid on a sheathing that has a continuous or stepwise character. The size of the step may depend on the degree of roof slope. When the bevel is less than 15°, the distance between the slats made of metal or wood is from 300 to 400 mm; above 15°, the pitch is increased to 600 mm.

To prevent rain or snow from getting into the gaps between the sheets, installation is carried out from the bottom layer, gradually moving upward.

Important! Corrugated sheeting with a wavy profile is laid on the side exposed to the least amount of wind.

If the slope is of sufficient length, a solid corrugated sheet is used, and it is laid from the end part. Alignment is carried out focusing on the cornice, providing an additional 40 cm for overhangs.

Installation of the coating is carried out very carefully, step by step checking the plan drawn up in advance:

1. Installation of the first element is accompanied by fastening with a self-tapping screw in the middle.
2. When laying the second part, the edge overlaps (overlaps) the previous fragment. The fastening method is repeated.
3. After preliminary laying of the parts completely over the entire roof, they are aligned, focusing on the horizontal eaves.
4. The connection of corrugated sheet elements with each other at the very ridge, falling into the deflection of the wave through a step.
5. Final fastening. Self-tapping screws are installed in the sheathing along a vertical line through one board, and along a horizontal line - at intervals of two waves. At the ends, the sheathing layer is secured at each step. At the top near the ridge and at the bottom at the cornice, self-tapping screws are inserted in each deflection.
6. The joints are strengthened at all mating points.
7. Excess parts must be trimmed with scissors on all sides.
8. Installation of end strips. Starting from the lower level towards the ridge, an increase in length is made, creating an overlap of 50 mm. Self-tapping fastening screws are installed one meter apart.
9. After laying the self-adhesive sealant on the corrugated sheet, the ridge element is attached. The overlap of the edges of the ridge strips should be 100 mm, the distance between the fasteners should be no more than 300 mm.

Watching the video will give you a more accessible idea of ​​roof installation:

Features of installation in difficult areas

Difficult areas are characterized by the presence internal corners, they are called valleys. Complicated places are considered to be the junction of two slopes, areas where ventilation outlets and chimneys are located. Internal joints need careful sealing to protect areas under the roof from moisture penetration. The lathing here has a continuous appearance.

The joints between the profiled flooring and the planks need to be sealed using a sealant or mastic. The valley strips are secured together with the profiled sheets. The top strip is installed on the profile to cover the edge joints and protect them from rain and snow.

The trading network has additional elements, having non-standard forms to avoid the hassle of covering a complex roof.

The video can demonstrate the process of laying corrugated sheeting in a more visual form:

It is quite easy to build a high-quality and durable roof from corrugated sheets yourself. It is only important to know what materials you need to take, how to properly attach the sheets to the sheathing and how to protect the internal roof space from dampness.

AND Special attention We will focus on additional elements that need to be bypassed in full compliance with technology. So, do your own corrugated roofing - step by step!

Preparing material: avoiding first mistakes

Once you have produced accurate calculations your roof, you can order profiled sheets. But, if you purchased corrugated sheets, but for some reason its installation will have to be postponed (for example, prolonged rains), then store the sheets without removing the original packaging, on flat surface and indoors. Additionally, beams must 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 especially sensitive to mechanical damage.

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

Fortunately, the technology for constructing a roof made from modern corrugated sheets will allow all work to be carried out in the warm season, from April to September, and you will not have to store the sheets for a long time.

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

Let's first deal with the in construction terms so that you don’t 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 installation, and they are really important. Because corrugated sheets from different companies are demanding in terms of their conditions, even if the differences are small. Therefore, carefully study the instructions supplied with the roofing material and do not completely trust hired workers who “have eaten the dog on such roofs” and are trying to do everything their own way.

Here is a simple example of how the installation of corrugated sheeting 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 crew will trample their feet on thin corrugated sheeting, because before that they “installed exactly the same roof for your neighbor” and “nothing was bent”? And now it will bend, and how, to which the would-be workers will declare that “that’s how it was.”

But, speaking in general, the main indicator of high-quality roof installation is tightness. After all, the roof serves precisely this purpose, so that everyone is protected from moisture and cold. internal structures. 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 metal roofing itself is not so complicated, but it is important not to damage the roofing covering during its installation. After all, although this material looks durable and tough, you still need to be careful when working with it:

1. Walk on the finished metal profile flooring in soft shoes.
2. Try to step only on the concave waves of the sheets and preferably directly on the screws.
3. So, you can only step on your toes on the roof.
4. Always place your foot parallel to the slope.
5. There should only be one leg in one notch.

Construction of sheathing for corrugated sheets

The lathing for roof installation is either continuous, if the slope is small, or sparse, in increments of up to 5 meters. But with what step the roof sheathing is needed depends on how thick the corrugated sheets are:

Waterproofing and windproofing

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

• Step 1. So, secure the selected waterproofing material to the rafters. To do this, take the most ordinary construction stapler, but before installation, 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 this, we punch 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 lay the roofing material along this top sheathing.

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

We select high-quality screws

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

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

• Fully waterproof roof.
• High connection strength.
• Minimal risk of injury to the coating during fastening, which means no corrosion in the future.

The highest quality and most reliable self-tapping screws for corrugated sheets are sold by the same suppliers that deal with sheets. If possible, use screws made of carbon or of stainless steel with zinc coating is perfect option. But when purchasing, still carefully inspect all sealing washers.

How to properly attach corrugated sheets?

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

Screws must be screwed into the roofing material strictly perpendicularly, directly into the deflection of the vertical wave near the corrugated sheet. Although there is a lot of controversy about this in the construction community, and each method has its own advantages. Thus, the self-tapping screw in the lower wave creates more reliable fastening, and at the top rainwater has much less chance of getting into the under-roof space.

At the eave and ridge, you need to drive screws into the camber through the wave, and in the middle of the sheet into each sheathing board. In total you will need about 5-8 pieces per square meter.

What tools will be needed for installation?

Note that the construction of the roof itself from corrugated sheets is really within the power of even a person with little knowledge of construction. Of course, there are roofing materials that only experienced professionals can install correctly. But in the case of modern corrugated sheeting We can reassure you: you can handle it on your own!

Fortunately, there is nothing complicated here. Thanks to the long length of the sheets, the roof slopes overlap without additional transverse joints, and the material itself can be easily cut and adjusted in shape. You will need a minimum of tools for this task:

So, corrugated sheeting can be laid on slopes of almost any inclination angle; it is only important to correctly calculate the amount of transverse overlap:

• 150-200 mm for roofs with 15-30°.
• 200 mm for a slope of 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 corrugated sheets this way: starting from the bottom row, first lay 4-5 sheets, and each of them is fixed with only one screw in the center. After this, the sheets are connected to each other with 4.8x19 mm self-tapping screws, which are installed in increments of 500 mm. Now they check how aligned the sheets are with the roof overhang, and finally fix the roofing material. Here's the scheme:

But, if you are working on the roof for the first time, to avoid distortion, attach the corrugated sheets according to the same pattern, but in this order:

• Step 1. Install the first sheet on the sheathing, and fasten it with one screw at the very ridge.
• Step 2. We lay the second sheet so that the lower edges of both sheets below form one perfectly straight 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 joined. Uneven? Then lift one sheet from the other, tilt it slightly from bottom to top, and again join fold by fold. Secure everything with self-tapping screws along the top of the waves.
• Step 5. So work with 3-4 sheets, carefully align them with the cornice and then install the remaining sheets.

The corrugated sheeting must be mounted to the base of the roof so that the edge offset is 40 mm from the eaves. This is necessary in order to leave a gap on the ridge. optimal size and roof ventilation was not impaired. By the way, if the profiled sheets have a drainage groove, then each subsequent one should overlap the groove of the previous one.

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

Working with additional elements

Now let’s move on to our numerous additional elements. All of them are usually made standard length: for a roof with a polymer coating – 2 meters, for a galvanized roof – 2.5 meters. They complete the roofing work itself. The seal, 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 others complex structures you need to purchase additional special elements that are offered by the same manufacturer whose roofing material you purchased:

The additional elements must be fastened with the same 4.8 roofing screws as the base material. The only difference is that the metal roof is fastened with self-tapping screws 28-35 mm long, and the elements are fastened with self-tapping screws 50-60 mm long.

Valley and valley overlay

Now let’s look at such a mysterious name as “endova”. The valley and valley overlay are additional elements that duplicate each other, which are mounted at the points of internal convergence of two differently directed slopes. The valley must be secured under the corrugated sheet.

Therefore, if the roof has complex shape, with internal surface joints, then take the valley and the valley overlay as an additional element. This way you will give your roof a more neat and 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 conventional parts - the lower one, which runs along the roof profile, and the upper one, the pipe itself. And, if the through passage of the pipe is on the lower part of the roof, it makes sense to install a snow block above the passage.

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

The pipe itself can be installed both before the installation of the roof begins and after completion. If you chose the second option, then you will need to cut a hole in the finished roof for the pipe and temporarily cover it with some material. During finishing works pipe cuttings will need to be made from galvanized steel aprons or more modern materials according to the Vakaflex type.

Here's a good tutorial on how to do it:

Dormer window

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

Snow holder

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

External and internal corner

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

Adjacency

An abutment is an additional element that serves as a rim for a chimney or to protect the junction of the roof and the wall:

Cornice, end and joint strips

And here are your instructions:

1. Install the end strips from the side of the roof overhang, towards the ridge.
2. Just cut off the excess part of the end strip.
3. Secure the plank to the end board and the corrugated sheets in the ridge with screws in increments of up to 1 meter. If you did everything correctly, the end strip will cover at least one wave of the roofing profile.
4. Attach the end strip with wood screws 4.8x60 or 4.8x50, directly to wooden base. Leave the step from 30 to 50 cm and make sure that the end strip completely covers the end of the outer wave of corrugated board.

Now we proceed 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 strip is taken 2 meters long, and the two strips are attached to each other with an overlap of at least 1 meter. The additional element should be attached to the wall in a groove, 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 roof slope, the more necessary this additional element is. But fasten cornice strip needed earlier than corrugated sheets. Overlap – 100 mm.

Ridge installation

After all the roofing material has been laid, we attach the ridge. We pre-line the joints between the ridge and the roof with a sealant. Ridge elements for trapezoidal roofing sheets, smooth ones are usually used. It is advisable to place ventilated seals between them and the profiled sheets, and for small corrugations - special ridge seals.

We fasten the ridge with self-tapping 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 must overlap each other with an overlap of at least 1 meter, and fastening the elements to roofing sheets We do it 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 sizes are 140x140 mm or 200x200 mm.

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

Maintenance of corrugated roofing

Snow on a roof made of corrugated sheets lingers quite a bit, and therefore there is no need to clean it. But, if you need to carry out certain renovation work, then arm yourself with small plastic shovels that will not leave scratches.

Caring for a roof made of corrugated sheets is quite simple: the rain itself will wash away all the dirt and dust, and you only have to clean the gutters once a year and drainage systems from clogged fallen leaves.

If for some reason more serious cleaning is necessary, then use ordinary water and a hose with a pressure of up to 50 bar. Detergents You can only use those designed for painted surfaces, and White Spirit will help you deal with stubborn stains.

As you can see, nothing complicated!