How to cover the roof with corrugated board with your own hands. How to cover the roof with corrugated board with your own hands How to put a professional sheet on a sloping roof
On the modern market there is a huge range of building and finishing materials, including for the arrangement of the roof. Primitive finishes such as slate and bitumen are gradually fading into history, being replaced by more presentable and high-quality materials that fully meet the requirements of modern housing construction.
Corrugated board is one of such high-quality and aesthetic materials. You can handle the roofing with corrugated board with your own hands. You are provided with a guide to arrangement of flat roofs. Such roof structures are very often erected on various outbuildings such as sheds and gazebos, and sometimes over residential buildings.
An inexperienced person may decide that corrugated board is not the best suited for arranging a roof and can only be used for sheathing gates and fences. However, this opinion is absolutely wrong. Modern profiled sheets have excellent protective properties, excellent appearance and are available in the widest range of colors.
Add to all the advantages the ease of installation and fastening of sheets, as well as the affordable cost, and you get an almost perfect material for roofing.
It is for the ease of installation that private and thrifty developers love profiled metal sheets so much. However, you do not need to think that it is very easy to cover the roof with the material in question with your own hands. Here, as in any other work, there are a number of important nuances that must be taken into account, especially when working with flat roof structures.
The nuances of using corrugated board when working with a flat roof
Flat roofing is mainly used to cover various types of outbuildings. In the process of installing a profiled sheet on such a roof, a number of features must be taken into account, first of all, the low slope of the roof slope.
To cover a flat roof, you should use a single sheet, without joints. Any joints increase the risk of moisture penetration into the space under the roof. If it is not possible to equip the roof with one sheet, the joints must be sealed with special silicone products.
It is precisely because of the features mentioned above that corrugated board is very rarely used for roofing flat roofs. Roll materials are better suited for such structures, however, with a strong desire, corrugated board can also be successfully laid.
Technology features
In accordance with the technology, profiled sheets must be laid at a certain angle, necessary to obtain the highest quality and reliable coating. If you have ever had to mount a roof covering with your own hands, you already know that the angle of attachment of the finishing material is determined by the angle of inclination of the roof slope.
In the case of a flat roof, certain difficulties may arise at this point. Profiled sheets are laid at a ten-degree angle. With a smaller slope, atmospheric moisture will not be able to drain normally from the roof and will penetrate under the roofing material, especially if the sheets are overlapped. In most cases, a crate helps to solve the problem of creating the desired slope in the case of a flat roof.
In addition to the slope of the slope, it is necessary to take into account its length. As a rule, profiled sheets have a standard length of 12 m. This size of sheets is very convenient - in most cases, the entire roof slope can be covered with one sheet, avoiding seams and any kind of joints.
If necessary, the profiled sheet can be easily cut with ordinary metal scissors. It is strongly not recommended to use a grinder for cutting roofing sheets. During the operation of this tool, a large amount of heat is generated, under the influence of which the protective coating of the corrugated board is destroyed, due to which the operational properties of the material deteriorate noticeably.
Roofing guide
With the device of a profiled sheet on a flat roof of a barn, gazebos and any other building, you can handle it yourself. The technology for performing the work remains almost the same for most cases.
Step one - tools
Prepare the following tools for work:
- electric drill. If possible, use a drill with a low chuck speed. This will allow you to accurately set the angle of entry of each fastener into the roofing surface;
- jigsaw. Instead, you can use scissors for working with metal or a hacksaw. It is categorically not recommended to cut sheets of roofing with a grinder. As a last resort, when no other tools are available, cut with a grinder using a special nozzle for processing corrugated board;
- brushes;
- boards for crates;
- a hammer.
The second stage - crate
Start assembling the crate. To arrange this element, it is most convenient to use boards. Lay the boards on the rafters and fasten them with galvanized screws or nails every 50-100 cm.
Select the specific step of the crate in accordance with the characteristics of the profiled sheet used. For example, for the installation of C35 profiled sheets, the optimal sheathing step will be a value of 0.5 m, and for sheets of the C44 brand, the fastening step of the boards must already be increased to 70-75 cm.
If the length of the roof slope exceeds the length of the profiled sheet, lay additional boards at the future joints of the sheets.
Treat the finished crate with an antiseptic. You can perform such processing before the start of fastening the boards - as you prefer.
The third stage - moisture insulation
Profiled sheets are based on metal. Condensation inevitably settles on metal surfaces. Moisture sooner or later leads to irreversible damage to any building materials, so it must be neutralized. There are 2 main options for neutralizing the harmful effects of moisture, namely:
After the completion of the waterproofing work, you can begin to prepare directly for the installation of the roof. For more convenient lifting of sheets on the roof, you can make a simple fixture in the form of two long rails laid from the ground to the roof at a slight angle.
It is more convenient if you have three assistants, so that two feed the sheets from below, and two take the material at the top and perform its installation.
Fourth stage - laying sheets
First of all, choose the appropriate installation option for profiled sheets. In total, there are two main mounting options, namely:
Decking can only be fixed using special galvanized self-tapping screws with seals. The seal must be made of neoprene rubber. Such material tolerates contact with moisture and temperature extremes well. The optimal diameter of the self-tapping screw for fastening the profiled sheet is 4.8 mm.
Nails cannot be used to fix corrugated board. With constant gusts of wind, the nails simply cannot hold the sheets normally, as a result of which they will be torn off the crate.
Self-tapping screws are screwed into the cavities of the sheets, where the material is adjacent to the crate. About 6-8 self-tapping screws are consumed per square meter of coating. Try to place fasteners at the same distance. Sheets must be fastened to the extreme purlins in all waves, because. these places will be subject to the strongest wind loads. To the rest of the elements of the crate, the sheets can be fixed through one wave.
Mounting holes are best prepared in sheets in advance. When working with a thin profiled sheet, holes can be made using a self-tapping screw, but if the sheets are quite thick, make holes with a drill.
Self-tapping screws with multi-colored hats are currently available for sale. You can easily choose fasteners that exactly match the color of your roofing profiled sheets.
Lay adjacent sheets of coating with an overlap of 1 wave.
Cover the entire main surface with corrugated board, and then install additional accessories if necessary.
Thus, there is nothing complicated in self-covering the roof with corrugated board. It is enough just to follow the instructions and observe the precautions that are relevant for any roofing work.
Good luck!
Video - Cover the roof with corrugated board with your own hands
To protect the house from rain and snow, it is necessary to close it with a reliable roof. The roof covering is intended for protection of internal rooms from adverse atmospheric influences. Most often, a gable or four-slope (hip) roof is used for private houses, but for small buildings, a single-slope roof is possible.
A multifunctional profiled sheet can be used as a coating material. A do-it-yourself profiled sheet roof will allow you to complete the construction without unnecessary costs and loss of quality.
Pros and cons of roofing material
Installation of corrugated board on the roof is a fairly popular way to complete the building box. But before choosing this particular material, you need to familiarize yourself with its advantages and disadvantages. Knowing undesirable features, you can eliminate or smooth them out in time.
The advantages of the material include the following characteristics:
- a shed or gable roof made of corrugated board with your own hands has a fairly low cost;
- installation technology and transportation do not cause difficulties;
- technology allows to provide high speed of roofing works;
- light weight of the material;
- strength and resistance to snow loads;
- high degree of waterproofing with proper installation;
- long service life;
- resistance to corrosion and fading under the influence of ultraviolet radiation;
- Fire safety;
- with proper fixing, high resistance to wind loads;
- the ability to use a sparse crate, which saves materials;
- the presence of a variety of colors.
The list of positive characteristics is quite wide, but do-it-yourself corrugated roofing also has disadvantages:
- laying the metal sheet makes the roof too noisy when it rains;
- surface heating in the sun;
- it is important to carefully lay the material, leakage is possible due to installation errors;
- the appearance of corrosion in areas with a damaged top layer.
If you do the job correctly, the above problems will not arise. To reduce the noise level, soundproofing materials are placed in the coating cake. Heating from the sun in this type of roofing is not higher than in other materials. Unlike, for example, bituminous tiles, it does not lead to a change in the structure of the coating and its melting. If the installation technology is followed, there are no problems with leaks either, and in order to prevent corrosion, it is necessary to be careful during transportation and movement, to prevent damage to the profiled sheet.
Which profiled sheet to choose for the roof
There are quite a number of different types of corrugated board on sale. When buying material for a shed or gable roof, you need to pay attention not only to color, but also to technical characteristics, namely:
- metal thickness;
- profile type and height;
- type of protective coating.
According to regulatory documents, there are three types of profiled sheet:
- grade "H" with high bearing capacity for horizontal structures;
- grade "C" for vertical structures;
- brand "NS" - universal.
It is best to lay on the roof material of grades "H" and "NS". Grade "C" can only be laid in the roof cake on small buildings with a large roof slope (60 degrees or more).
It is also possible to lay a wall profiled sheet in a pie for a shed roof of garages. Also, when choosing, it is necessary to pay attention to the wave height of the sheet, it is indicated immediately after the letter in the marking. For pitched roofs, laying grades H60 and H75 is possible. For flat profiled sheets H75 or H114 are suitable. To choose the right one, you need to know the snow load and the pitch of the rafters.
Roof construction options
Depending on the purpose of the under-roof space, the pie of a shed or gable roof may differ. When arranging a cold attic or technical floor, the pitched roof structure will look like this:
- rafter legs;
- waterproofing;
- crate;
- roofing.
In this case, insulation is not required, as it is provided by the attic floor pie.
To equip an attic or a warm attic, you will need to lay the insulation. The roofing pie from the profiled sheet will look like this:
- ceiling lining;
- bottom crate;
- vapor barrier;
- rafter legs with insulation between them;
- waterproofing;
- wind protection;
- counterlattice;
- upper crate;
- roofing.
The cake also largely depends on the chosen insulation. For example, laying mineral wool requires the arrangement of an air-ventilated layer. The thickness of such a gap should be at least 4-5 cm. This must be taken into account when choosing the thickness of the rafters and counter-battens. The insulated roof must meet the requirements of heat engineering, on the basis of which the thickness of the heat-insulating material is selected.
Step by step laying technology
The device of the roof from the profiled sheet The device of a roof from a professional flooring demands performance of a preparatory work. They include measurements of the exact length of the slope and the calculation of the required number of sheets. The roof of individual buildings can be single-pitched, double-pitched or four-pitched. Most often, the length of the profiled sheet is taken equal to the length of the slope. In the calculations, it is necessary to take into account the margin for overlap, which depends on the angle of inclination of the surface:
- 200 mm or more for roofs with a slope of less than 15 degrees;
- 150-200 mm for roofs with a slope of 15-30 degrees;
- 100-150 mm for roofs with a slope of 45 degrees or more.
Having calculated the amount of profiled sheet needed to cover the roof, it is necessary to check the tools that may be needed. The device of a roof from a professional flooring requires the presence of:
- rulers and pencils;
- building level;
- hammer and nails;
- tools for cutting metal (metal shears, hacksaw, circular saw, electric jigsaw for metal);
- riveting machine with steel rivets.
Having prepared all these tools in advance, you can easily lay a profiled sheet.
Choice of crate
The installation instructions for this element of the truss system are quite simple. Shedding for a shed or gable roof can be of two types:
- solid;
- sparse.
In most cases, both options are installed on the same roof. For the main area, the lathing is laid sparsely, and such roofing units from corrugated board as valleys, cornices, skates require laying without gaps.
The crate of a shed or gable roof can be made from the following materials:
- timber with a section of 50 by 50 mm;
board with a section of 32 by 100 mm.
The dimensions also depend on the snow load and the pitch of the rafters. In the first case, the crate is laid every 5 cm, and in the second, every 10 cm (that is, every one). It is possible to lay more discharged.
All wooden roof elements must be treated with antiseptic compounds before work begins. After fixing the bars or boards (if there is no need for waterproofing), you can lay the roofing material.
Instructions for fastening sheets
Installation of corrugated roofing requires attention to the reliability of fastening. Sheets are fixed with self-tapping screws in the lower part of the wave. To properly cover the roof, you will need to prepare self-tapping screws with hexagonal caps and neoprene gaskets. It is necessary to use special high-strength fasteners designed for metal.
This video provides instructions for laying the profiled sheet:
The fastening technology is quite simple: sheets are fastened with self-tapping screws to the crate in the lower part of the wave so that there are 5-7 fasteners per square meter of coverage.
Also, before starting, do not forget to familiarize yourself with the important subtleties that professionals talk about:
Before you cover the roof of the house with corrugated board with your own hands, you need to carefully study the issue. If the structure is mounted correctly, there will be no problems with its operation in the future. The roof will not leak and will last for many years.
Roofing from corrugated board looks quite attractive and reliably protects the house from bad weather. At the same time, corrugated board belongs to the group of budget materials and is quite simply mounted. That is, if you take up roofing work with your own hands, arranging the roof of a house will be inexpensive. Consider how to cover the roof with corrugated board, if professional roofers are not planned to be involved in the work.
What determines the reliability of the roofing? Of course, from the properties and qualities of the roofing material. But no less important factor is how correctly the installation work was carried out. Errors during installation can lead to leaks even if the highest quality and most reliable material is used.
Choosing corrugated board as a roofing material, homeowners prefer a reliable and durable material. But in order for the assembled roofing to protect the house with high quality, it is necessary to assemble it correctly. Consider how to properly cover the roof with corrugated board.
Material selection
Even before the start of installation work, it is necessary to choose the right type of corrugated board that will be laid on the roof. On sale there is a material with different base thicknesses and different corrugation heights, while each type of corrugated board has a corresponding marking.
Advice! Manufacturers offer a profiled sheet with a wave height of 8 to 158 mm. The choice of the most suitable brand of material is carried out depending on the area and construction of the roof. As a rule, for low-rise residential buildings, a profiled sheet with a corrugation height of 21 to 57 mm is used.
Choose, preferably, a material with a polymer coating. Firstly, such a profiled sheet looks more attractive and diverse. Secondly, the polymer layer additionally protects the steel base from corrosion and increases the service life.
Making a roof plan
The first stage of work is the preparation of a detailed roof plan indicating all dimensions and details (pipes, skylights, superstructures, etc.). Also, it is necessary to indicate the slopes of the slopes, since the design of the crate will depend on this value. Having a detailed roof plan, it will be easier to calculate the number of necessary elements - profiled sheets and extensions.
Advice! If you plan to equip a simple gable roof with rectangular slopes, then you can calculate the amount of materials yourself. In the event that the roof is of a complex configuration, it is better to entrust the calculations to specialists.
It is more profitable to order corrugated board, necessary extensions and roofing screws from one supplier. The fact is that when buying material from one manufacturer, you can count on the fact that all parts of the roof will have the same shade. But when buying the main cover and add-ons in different places, this cannot be guaranteed.
How to handle corrugated board?
When planning to cover the roof with corrugated board, it is worth, first of all, to get acquainted with the features of working with this material. It is very important to handle the corrugated board carefully in the process of work so as not to damage the protective coating. Otherwise, centers of corrosion will appear on the roof covering, and the roof will fail much earlier.
Features of transporting corrugated board
- For transportation of material, packs of corrugated board must be laid on a solid and durable surface. Moreover, the dimensions of the body must be equal to or exceed the dimensions of the packs. It is prohibited to transport material by weight.
- When transporting sheets, it is not recommended to move at a speed of more than 80 km / h, sharp braking should be avoided.
- Loading and unloading of packs, as a rule, is carried out using lifting equipment with soft slings. If manual unloading is necessary, a sufficient number of loaders must be involved. To carry sheets longer than 1.5 meters, at least two people must be involved.
- When carrying sheets, take them by the edges along the long side. The material must be transferred carefully, avoiding kinks and deformations.
- It is forbidden to throw sheets of corrugated board or drag them.
- To lift the sheets to the roof, logs should be built from two boards. Lift sheets only one at a time.
- Roofing work is prohibited in windy weather, as sheets can be carried away from the roof.
How to cut and fasten corrugated board?
During installation, it becomes necessary to cut sheets of corrugated board. When performing this work, use only those tools that do not heat up and destroy the protective coatings. To do this, use the following tools:
- Hacksaw or circular saw with electric drive;
- Metal shears - manual or electric;
- Electric jigsaw.
But the grinder with an abrasive disc can not be used. To attach the corrugated board to the crate, you should purchase special roofing screws. These are screws with a drill at the end, equipped with a gasket made of an elastic material.
You need to screw in the self-tapping screw so that the gasket is slightly compressed, but not deformed. With the correct installation of the self-tapping screw, the gasket reliably seals the mounting hole.
Advice! In the process of cutting material or screwing in screws, metal chips are formed. It must be immediately carefully swept away with a soft brush, otherwise the chips will quickly rust and ugly spots form on the coating.
Roofing installation
Consider how roofing work should be carried out. First you need to prepare the base for laying corrugated board, and then mount the coating.
Assembling a roofing pie
If an uninsulated roof is being installed, then a waterproofing film must be spread along the rafter legs. The material is laid freely so that it sags a little between the rafter legs.
The film sheets are laid so that they form an overlap 15 cm wide. The sheets are fastened together with double-sided tape, and it is convenient to fix them on the rafter legs with staples of a construction stapler.
Then the construction of the counter-lattice is carried out, this is necessary in order to form a ventilation gap between the roofing and the waterproofing layer. The counter-lattice is assembled by nailing bars with a section of 50 mm onto the rafter legs.
Next, you will need to build a crate. The design of the flooring for the profiled sheet is determined by two parameters - the slope of the slope and the height of the corrugation. The greater the height of the corrugation of the sheet, the more rigid it is, therefore, the crate can be built with a large distance between the elements.
The slope of the slope affects the amount of snow that accumulates on the roof. It is clear that the flatter the slopes, the more snow can accumulate on them. Therefore, on slopes with a slight slope, a crate is built with a minimum distance between the elements.
Assembly of a profiled sheet
- Sheets are laid on the roof with an overlap, the width of the overlap is determined, depending on the slope of the slope.
- When forming a side overlap, laying is carried out so that the top sheet is located on the leeward side. When forming an overlap in a horizontal row, the upper sheet (from the ridge) overlapped the edge of the lower one.
- On rectangular slopes, sheets are laid from the bottom up.
- When laying the bottom row, a cornice overhang 5-20 cm wide is formed, depending on the height of the corrugation of the corrugated board.
Installation of extensions
- Special elements are installed on the ridge with an overlap of 10 cm wide. The elements are fastened with long self-tapping screws, screwing them into the crest of the wave.
- Internal corners (valleys) are equipped with lower and upper extensions. The lower ones are installed before laying the profiled sheets, the upper ones - after the completion of the laying of the coating.
- In places near pipes and other vertical superstructures, special adjoining strips are installed, under which a waterproofing coating and a special element are supplied - a covering apron.
- At the ends of the roof you need to install special strips. On the cornices, the strips are installed before laying the coating, on the gables - after the installation is completed. Gable strips are used to protect the roof from wind loads.
So, you can install corrugated roofing on your own, without the involvement of professionals. To do this, you will need to study the rules for working with corrugated board and installation technology. Significant assistance to beginners will be provided by video materials describing the most difficult moments of work.
How to properly cover the roof with corrugated board: finished roofRoofing from corrugated board has a whole range of significant advantages:
- durability;
- reliability;
- strength;
- resistance to all types of atmospheric influences;
- very elegant and attractive appearance.
In addition, corrugated board is quite easy to use and unpretentious to small flaws in the work, typical for beginners or inexperienced installers.
Selection of materials and calculation of their required quantity
Do-it-yourself profiled sheet roof can be made from both roofing and wall corrugated board. These two types differ in the thickness of the steel sheet and the features of the profile shape. The main external difference of wall corrugated board is the presence of one or more additional longitudinal grooves that increase the rigidity of the material.
Which deck to choose
For roofs of a small area, wall corrugated board is quite enough. When covering large surfaces or with a rare crate, it is better to use roofing corrugated board (it is more durable, the profile height is from 20 mm), although this increases the cost of the roof. The use of a more durable coating makes sense for peaked roofs that are subject to increased wind loads.
It is best if the length of the sheet is equal to or greater than the length of the roof slope. This will greatly reduce the number of joints, save on fasteners, reduce labor intensity and time spent on work.
How to calculate the amount of material needed
The cost of a metal roof is quite high, therefore, even at the preparation stage, it is necessary to calculate the required amount of all its components as accurately as possible. As practice shows, the material should be taken with a small margin, since it is almost impossible to determine the exact amount of waste in advance.
Sheet calculation
The calculation of the required number of sheets for covering the roof is carried out in each case individually. This takes into account the overlap area and the useful area of the sheet. The graphic method of calculation is considered the most correct, in which a plan of roof slopes is made on graph paper and all sheets are marked on it.
- When the slope of the roof plane is less than 15 degrees, the sheets must overlap by more than 20 cm;
- A slope of 15 to 30 degrees corresponds to an overlap of at least 15 cm;
- On pointed roofs with a slope angle of more than 30 degrees - 10-15 cm.
The places where the corrugated board overlaps at almost horizontal roofs, with a slope of less than 12 degrees, must be coated with a special bituminous, silicone or polyurethane sealant of brands such as Favorite, Bau Master, Macroflex, Liquid Nails. The fact is that water and melted snow are poorly discharged from a sloping roof, and in this case only a sealant can protect the wooden crate from excessive moisture.
Fastener selection
For the installation of corrugated board, special hardware is used: self-tapping screws and screws. The latter are used much less frequently, since they require pre-drilling holes in the sheet. Self-tapping screws for metal have a drill at the end. Thanks to this design, they themselves drill a hole in the metal and then, due to the thread, they go deeper into the tree.
For fastening the flooring, the diameter of the hardware should be in the range of 4.8 - 6.3 mm. The length is chosen so that the screw in no case goes through the board of the crate. Otherwise, the waterproofing membrane will instantly burst in this place.
The hardware intended for fastening the corrugated board is painted in the same color as the roof, so they do not stand out against its background at all. Self-tapping screws come with sealing neoprene washers-gaskets. They are necessary for the protection and durability of the roof: without them, the wood under the mount will quickly get wet and rot.
The hexagonal head is oriented to the same screwdriver nozzle. In order not to push through the metal, its lower plane has an enlarged area.
The screw head is usually made in the form of a cone, which does not press, but pushes through the metal and greatly reduces the area of holding contact. When using screws, in addition to a sealing rubber or polymer gasket, it is recommended to additionally protect the hole with silicone or sealant.
We will tell you how to fix the corrugated board on the roof with self-tapping screws, the photos of which you see, using the example of a sheet with a rectangular profile. On average, on a flat area of a sloping roof, from 6 to 10 hardware is used. This number varies, depending on the design of the crate, the angle of inclination and the location of the profiled sheet: in the extreme side - self-tapping screws are installed in two extreme recesses of the wave. In the middle part of the roof, they are used across the row. The pitch of the self-tapping screws is at least 500 mm. After receiving the required amount, the number of hardware must be increased by 1.15 times.
Laying corrugated board
There are many variations of laying corrugated board. But the most common and reliable method is layer-by-layer horizontal. How to cover the roof with a profiled sheet with your own hands, consider the example of the simplest and most affordable method.
Operating procedure
We check the level of the horizontal of the lower cut of the crate along the cornice strip. If it is littered to the horizon - when laying the first sheet, we make a small release below the bar. There must be a ventilation gap between the plank and the vapor barrier. Without it, the crate will very quickly pick up moisture and begin to rot.
- In order to understand how to properly cover the roof with corrugated board with your own hands, it should be noted that work on a shed or gable roof starts from any edge, and a complex hip roof is covered from the center of the hip.
- The first two or three sheets are pre-attached in a rough outline (the screw does not drive completely). And only after checking the horizontals are finally fixed. Each subsequent profiled sheet overlaps the previous one. The higher rows, like scales, are superimposed on the upper part of the lower rows.
- If it is not possible to fit the edges of the uppermost sheets to the ridge, they are cut in place with electric scissors or a hand tool. Please note that you can not use the grinder for this purpose! It greatly overheats the metal, destroys the protective coating at a distance of several centimeters from the cutting point.
- When using screwdrivers, it is important to set the correct screwing torque. It is necessary to ensure a tight tightening, but to exclude the punching of the metal profiled sheet. The head of the screwdriver must not protrude beyond the protective plane of the screw. Otherwise, during operation, the coating that protects the metal may be damaged. In this place, rust streaks will appear very quickly, and the profiled sheet will coronate and collapse.
- The place of joining the roof slopes is covered with a special ridge strip to match the color of the corrugated board. For pointed roofs, a ventilated fastening design can be recommended. But its installation requires certain knowledge, so the bar can simply be fixed through the seal on top of the corrugated board. Ventilation will be provided by the design of the profiled sheet.
- The final step will be the knocking of the end strips. Typically, these products have a two-meter length and a shelf width sufficient to cover two corrugated waves. The plank is fastened with an overlap of the roof, also covering the end wooden board. On this, the roofing of the roof with a professional sheet with your own hands can be considered complete.
Corrugated roofing safety instructions
- As with any work at height, safety on the roof is provided by safety cables and anchorages.
- Wear soft shoes with rubber soles on your feet.
- It is strictly forbidden to carry out roofing work on a windy day! Decking can "catch" the wind and blow everything in its path.
- It is easier and safer to apply corrugated board to the roof from the ground along inclined boards using a winch.
- On a hot sunny day, the metal heats up to 80-90 degrees or more. Therefore, it is better to work on the roof with durable gloves. In addition, the cut edge of the metal is dangerous, and the mittens protect the hands well from cuts.
- When walking, do not step on the ridges of the profiled sheet. They can collapse under the weight of a person, and you will lose your balance.
Outcome
Covering the roof with corrugated board with your own hands is quite easy and quite affordable for each of us. With careful preparation and a responsible approach to this work, do-it-yourself corrugated roofing will last no less than as a result of the work of professional craftsmen.
“How to properly cover the roof with corrugated board and is it possible to do it yourself?” - these questions are asked by every homeowner who decides to use a corrugated sheet as a roof covering for his house or outbuildings. Profiled sheet as a roofing material is a leader not only in terms of price-quality ratio, but also in ease of installation. If you act step by step and strictly follow the simple technology, then covering the roof with corrugated board will not cause any particular difficulties.
For the roof, a metal profile of the H57 or HC35 brand is chosen. H57 corrugated board with an additional stiffener, the so-called load-bearing one, is ideal as a roofing material, but a little expensive. Usually they use the universal HC35, it is suitable in terms of quality and is more affordable in terms of cost. You can choose a regular galvanized sheet, or you can choose a polymer-coated one, it all depends on your wishes and wallet. Before covering the roof with corrugated board, you need to decide on the number of sheets of material, additional elements. If the roof is simple enough, then you can do the calculation yourself. The roof slopes are rectangles, isosceles trapezoids or triangles, that is, the length of the slope is the value from the ridge to the base, add 5 cm and get the length of the metal profile sheet. 
When roofing with corrugated board, it is desirable that the slope be covered in length with one sheet, since the fewer overlaps, the more reliable the roof, but if you still have to cover in several rows, then you need to add 20 cm for each overlap. Consequently:
- PROF SHEETS LENGTH \u003d Slope LENGTH + 5 cm, if the roof will be covered in one sheet.
- LENGTH OF THE PROF SHEETS \u003d LENGTH of the slope + 5 cm + 20 cm (for each row with an overlap), if the roof will be covered in several horizontal rows.
The roof can be covered in 2 rows of 4.3 m each - 20 cm will go to the overlap, 5 cm to the overhang, and it turns out the working LENGTH of the sheet \u003d 4.3 m-0.2 m-0.05 m \u003d 4.05 m. For each type of metal profile has its own working width, but in this example, the most common corrugated board for roofing HC35 is considered. The useful width of the HC35 metal profile sheet is 1 m, so the working area of the sheet for such a slope is 4.05 × 1 = 4.05 m2. We consider the number of sheets: 128: 4.05 \u003d 31.6, that is, you need 32 sheets of metal profiles of 4.3 m each. You can take and cover the roof with one sheet 8.15 m long, you will need 128: 8.15 \u003d 15 such sheets, 7, that is 16 sheets. But will it be convenient to work with such a length yourself ... If the roof is “broken”, with many bends, you need to scan all the slopes and count the number of sheets for each slope and add them up. You can also turn to specialists, they have special programs that will make a calculation and even a better installation scheme. There are also online calculators for calculating the amount of corrugated board, but before entering the data into the program, check the correctness of their calculation using a simple example, at least the one above. Depending on the type of roof, additional elements are also purchased, such as skates, end, cornice and butt strips, self-tapping screws for their fastening. Self-tapping screws are purchased at the rate of 11 pieces per 1m2. Thus, before covering the roof with corrugated board, it is necessary to carry out painstaking work on measuring, counting all the materials that will be used in the work. This stage should be worked out very carefully so as not to interrupt work in the future due to a lack of some details. standard stage. Warming and vapor barrier
A roof made of corrugated board for our climatic conditions necessarily requires insulation. The insulation technology is the same as for all other types of coating: mineral wool between the rafters and a vapor barrier layer, the insulation layer must be at least 15 cm.Hydrobarrier
In order to protect the heat-insulating layer from moisture and prevent the roof from leaking, a waterproofing layer is laid. This is a mandatory step, it cannot be neglected. Consider how to properly waterproof the roof. Under the roof with corrugated board, it is better to choose modern waterproofing materials. Both membrane and polypropylene films are widely used. The technology of their laying is very simple. If the roof is new, being built from scratch, then, of course, it is better to use a membrane. The waterproofing layer is unwound over the main rafters in horizontal rows. The overlap of the top row to the bottom row should be 15 cm, the film should sag a little by 2 centimeters (but there should be a distance between the insulation layer and the waterproofing of about 3 cm) and fastened with a stapler to the rafters, the overlaps should be glued with adhesive tape.
If it is planned to simply cover the roof with corrugated board, previously covered with other material, then there is no point in using a membrane. A dense thick polyethylene film is laid on top of the old insulating layer, for example, roofing material. In any case, the waterproofing is fastened with a stapler, and the joints are glued with construction tape. Counter-lattice and crate
After the waterproofing layer is laid, the counter-lattice is stuffed. Along the main rafters, over the hydro-barrier, bars are stuffed with gaps of 20 mm. For the counter-lattice, 25 × 40 mm bars are usually used. A crate is stuffed onto the counter-lattice. For different types of corrugated board, different types of sheathing pitch, the thinner the corrugated board and the smaller the roof slope, the smaller the sheathing pitch. This article discusses how to properly cover the roof with corrugated board, therefore, the recommended correct option for the roof is considered - the HC35 metal profile. However, in the table below we will indicate the recommended step for different types of profiled sheet.| Type of corrugated board | roof slope | Sheet thickness | Lathing step |
|---|---|---|---|
| S-8 | more than 15 degrees | 0.55 mm | solid |
| P-18; MP-20; P-20; S-20 | up to 15 degrees | 0.7; 0.55 mm | solid |
| more than 15 degrees | 0.7; 0.55 mm | no more than 500 mm | |
| NS-35 | up to 15 degrees | 0.7; 0.55 mm | no more than 500 mm |
| more than 15 degrees | 0.7; 0.55 mm | no more than 1000 mm | |
| S-44 | up to 15 degrees | 0.7; 0.55 mm | no more than 500 mm |
| more than 15 degrees | 0.7; 0.55 mm | no more than 1000 mm | |
| H-60 | 0.7; 0.8; 0.9 mm | no more than 3000 mm | |
| H-75 | not allowed less than 8 degrees | 0.7; 0.8; 0.9 mm | no more than 4000 mm |
Laying profiled sheets
It's time to directly attach the corrugated board to the roof. Sheets are fastened only with special roofing screws with a rubber lining near the cap and a drill at the end, matching the color of the profiled sheets. For fastening, a conventional screwdriver is used. First, the eaves plank is attached.
Sheets rise to the roof along inclined boards so as not to deform them. The first sheet begins to be laid from the lower corner of the roof, the sheets are carefully aligned with the eaves. The fastening of the corrugated board to the crate is carried out in the lower wave with self-tapping screws 4.8 × 35 mm in size.
There are several schemes for laying profiled sheets, but the rules for working with profiled sheets are always the same: - The lowest row (along the eaves) and the uppermost row (along the ridge) are fastened with self-tapping screws into each wave deflection.
- The middle of the slope is fixed through the wave in a checkerboard pattern.
- Self-tapping screws are screwed in clearly perpendicular to the plane of the sheet, distortions are unacceptable.
- The longitudinal step for fastening the sheet is 1 m.
- Vertical overlaps between adjacent sheets are 1 wave (for a flat roof 2 waves).
- The top row lies on the bottom row with an overlap of 20 cm.
- The horizontal overlap line is fastened with self-tapping screws into each lower wave.
- Profiled sheets along the edges of the roof are attached to each plank of the crate.
- Cutting profiled sheets is done either with an electric jigsaw or electric shears (not a grinder!).
- You should move along the roof along the lower wave in soft shoes.
Since it is not so difficult to properly cover the roof with corrugated board, fixing the sheets should not take much time. After all the sheets of the metal profile are fixed, they begin to fasten the additional elements: skates, end (wind) strips, snow retainers. The ridge is fastened with self-tapping screws into every second upper wave, with an overlap on the sides of 150-200 mm. 
End (wind) strips are installed with an overlap of at least 50 mm. 
All additional elements are fastened with special long self-tapping screws for the metal profile - 4.8 × 50 (60) mm.
