How to properly cover the roof from slate to corrugated board? How to make a do-it-yourself roof covering with corrugated board - a step-by-step guide How to cover an old roof with corrugated board

You decide to replace your heavy slate roof to a lighter modern material? Don't rush to hire expensive professional roofers. In this article, RMNT will tell you how to do all the roofing work on your own.

Until recently, asbestos-cement slate sheets, invented back in 1901, were considered the main roofing material. Such an “eternal” roof met all the necessary qualities that were relevant at that time, but it also had one significant drawback - an impressive weight. Today, with the advent of new roofing materials on the market, slate is rapidly losing ground. The population en masse covers the roofs with ondulin, corrugated board or. At the same time, hired construction teams, in order to increase the estimated cost of work, as well as make life easier for themselves, often convince the customer to produce complete dismantling and make a roof from scratch. Others believe that it is enough to simply remove the old roofing material and you can safely lay a more modern one. The truth, as always, lies somewhere in the middle. Let's try to explain how to actually do it.

Dismantling works

In order to build something new, we must first remove all the old that interferes with us. That is, to carry out dismantling work. And, of course, you need to start dismantling with ... a weather forecast. Before you start roofing work, you should find out if weather forecasters promise us long and prolonged rains. After all, we are already covering living quarters, with all internal work, so that rainfall inside is categorically undesirable.

Important! Even if the weatherman gave the go-ahead, still stock up on film, tarpaulin or other waterproofing.

For dismantling, we need a nail puller, wooden block, ropes and a pair of hooks as thick as a slate nail, as well as two guide rails that will serve to safely raise and lower roofing materials.

Dismantling should begin in the reverse order to installation, that is, first we remove the skate, then the top row of slate, and so on until the bare crate. We pull out the nails with the help of a nail puller, placing a wooden block in the last stop. Asbestos-cement sheets should be lowered along wooden guides, hooking them previously to the holes made with nails with hooks. Lowering the slate just by a rope is not safe.

Do not try to dismantle the slate from the entire roof at once, if the team is small and you do not have time to cover the roof in one day, replace it in stages, first repairing one slope, then the next.

Following the slate, we also dismantle the old crate, leaving only the bare rafter system on the plane.

Rafter system repair

Since the requirements for the plane of slate and corrugated board are different (for the installation of corrugated board, a perfectly flat surface is required), we will build this plane.

First you need to pay attention to the condition of the extreme rafters and the presence of a plane as a whole. To do this, in all four corners of the slope we are repairing on the rafters, we twist the screws so that all 4 hats are not screwed 3 cm to the beam. From corner to corner diagonally, as well as along the rafters, we stretch the lacing. Checking in this way whether the plane is flat and whether there is a bump on the wooden structure. The threads stretched diagonally should barely touch each other at the intersection. If the plane is missing, we build it by unscrewing (but not twisting) the necessary screws.

Now, using the extreme rafters as beacons, we pull the laces between them in increments of 1.5-2 m and audit the rest of the truss system. If necessary, we level the rafters with an edged board, and in case of severe damage to the tree, we will completely replace them. In any case, 2 people who simply have the skills to handle construction tools will cope with such work without much labor, while the manufacture of a new truss system requires the forces of an entire construction team with the participation of truly roofing professionals.

Lathing manufacturing

The next step is the laying of the waterproofing membrane. It is laid horizontally on top of the rafters, starting from the bottom and rising to the ridge. Waterproofing must overlap so that water flows over it. We nail the film to the rafters with a stapler.

Important! It is impossible to lay the waterproofing “stretched”, it should sag slightly, thereby increasing the size of the ventilated space.

In parallel with the hydrobarrier, we mount the crate. If this is not done, then there will be problems with how to get to the plane of the truss system without damaging the waterproofing membrane.

The installation of the lathing begins with the installation of a support beam (50x40 mm), which is attached over the waterproofing film along the entire length of the rafters. For installation, we use a self-tapping screw 4.2x75. The installation step is 35-40 cm. It is not necessary to use a beam long for the entire rafter, blanks of 1-1.5 m are quite suitable.

For the transverse crate, an edged “shalyovka” is suitable - a board measuring 25x150 mm. We start installation from the eaves itself and ending with the ridge. The first and last boards should go along the very edges of the rafters, the rest should be located in increments of 450 mm, that is, a 30 cm template must be installed between the boards (the crate is designed for C21 grade corrugated board, for other types of iron the crate step will be different).

When the crate is finished, we move on to the second slope. We also carry out all the above operations. The difference lies only in the installation of the last ridge board. It should cover the corresponding board of the opposite slope; for this, the latter is trimmed with an electric planer. Both boards are protected with one piece of waterproofing membrane, securing it with a stapler.

Lastly, we mount the wind board. It is attached to the end of the crate and should protrude above it to the height of the corrugated board wave, it can be a couple of millimeters lower.

Installation of corrugated board

When the work with the tree is completed, you can proceed directly to the installation of corrugated board. It would be nice to get it in a size equal to the length of the slope. This is the distance from the ridge to the end of the rafter, plus another 5-8 cm.

The sheets are carefully removed from the pack and fed to the roof along inclined guide bars; for convenience, a couple of holes for hooks can be made in the outer wave in that part of the sheet that will be covered by the ridge.

Important! Sheets of corrugated board from the pack must be removed, and not pulled off. The polymer coating is very easy to scratch.

The first sheet is exposed very carefully. It will depend on him how the rest of the iron will lie. To do this, we fasten flags to the extreme rafters, small slats 20-30 cm in length, which are installed in the same plane with the rafter system and protrude beyond its limits by 10-15 cm. At a distance of 5-8 centimeters from the eaves, a self-tapping screw is twisted into such a rail strictly perpendicularly so that its head is higher than the height of the corrugated board wave. Further, between the two extreme flags along the height of the wave of the metal sheet, we stretch the lacing. If it sags, the flags can be duplicated. Leveling on a thread, it is much easier to expose iron.

Important! Any trimming of corrugated board should be carried out from the side of the ridge, from the side of the cornice there should be only a factory cut.

The corrugated board is mounted to the crate using screws with press washers at the rate of 6-8 pieces / m 3. It is useful to calculate and outline the attachment points on the ground.

Important! We twist the screws without fanaticism, the press washer should press the iron to the crate, but at the same time not deform much.

We mount wind corners and a skate. It is much easier to do this work right away than to climb slippery iron later, with the risk of crushing or scratching it. To fix the ridge, long drills with a press washer are used, which can pierce the thickness of the corrugated board and gain a foothold in the tree. Installation is carried out through an external wave.

Important! All high-altitude work is carried out only with the use of insurance and with the good health of the master. Violation of these simple rules can lead to tragic consequences.

Related videos

A few decades ago, slate was considered the most popular and practical for roofing, and many private houses and industrial facilities still have a similar roof.

Today, many prefer to replace outdated material with a more modern and convenient one.

In this article we will talk about the features of replacing the roof.

Replacing slate with profiled flooring

The asbestos-cement sheet invented at the beginning of the last century was considered the most revolutionary and flawless material for that time. Roofers were sure that when making a roof, they provide reliable protection home for the ages.

With all the advantages, slate sheets had one, but a very significant drawback.

The weight of such a roof was very significant and required the installation of beams and other load-bearing elements with special care. Massive logs and beams or metal bases were used.

Slate roof

Today the positions of yesterday's sales leader are moving back. Innovative, strong, durable and lightweight roofing materials have appeared.

We can say that andulin is more actively used by builders at the present time.

You need to be well versed in the technology of roof installation in order to independently replace the outdated coating. If you are not confident in your abilities, it is better to involve trusted, well-trained professionals who can give good advice on the installation and alteration of the roof.

Advantages of using corrugated board

• The most significant advantage for the owner is the small weight of the sheets, and therefore the minimum number of workers to carry out work to replace old material with corrugated board.
• Another significant plus is the high bending strength of the sheet, thanks to stiffeners, which makes it possible to carry out installation with minimal effort to preserve the material during construction.
• The service life, subject to the installation technology of the roof structure, is practically unlimited.
• Affordable price allows people with average incomes to use it when repairing or building a roof.
• However, it should be noted that corrugated board requires good, which is especially evident when precipitation occurs in the form of rain or hail.

What to do with old slate

Reference: In order to make the structure as light as possible and to examine the system of rafters and beams, it is necessary to remove the obsolete roofing material.

Some owners believe that it is possible to cover the old slate with new material and thus make the roof more reliable, while it is assumed that they can save on soundproofing.

Important! This approach is fundamentally wrong. You load the structure with an unforeseen weight, and in winter, during heavy snowfalls, the roof may not withstand the additional load. It is necessary to remove the old asbestos-cement material and replace it with a new, more durable and comfortable one.

Dismantling of old material

The first step to start removing the outdated and spent slate is a close acquaintance with the nearest weather forecast. We need to make sure that in the coming days it will not start to rain.

Important! Even after making sure that weather forecasters guarantee clear, dry weather in the coming weeks, stock up on film and, just in case, close the attic with waterproof protection.

The main tools for roof replacement are

• nail puller
• several strong hooks
• ropes
• wooden bars.

This simple kit is for safe work when removing and lowering old slate roofing sheets. The order of work is the reverse of the installation, that is, it is necessary to start with the dismantling of the ridge and the top row of slate, gradually going down until the old coating is completely removed.

The crate should remain completely bare so that you can make sure that it is intact and, if necessary, replace the failed structural segments.

Pulling out nails is carried out using a conventional nail puller, under which, for convenience, a small wooden block or a piece of board is placed.

To lower the slate, thread special hooks into the holes left by the nails and place them for better glide. wooden bars. It must be remembered that shooting with ropes alone is much more dangerous.

Removing the entire array of the old roof is not rational, because if you cannot immediately lay new material, then no matter what the weather forecast guarantees, there is always a chance for unexpected precipitation.

Help: Break down the upcoming work into stages.

Remove the slate from one slope and lay a new corrugated board. This will save you from surprises related to the weather.

Rafter repair steps

For the installation of profile sheets, a flawless, even surface is required, so special attention should be paid to the quality of the old rafters.

It should be checked to what extent the design has retained its operational qualities: it meets the requirements for reliability and safety. Make sure that all beams are not cracked and have not been attacked by insect pests (bark beetles, longhorn beetles and lumberjacks, wood borers and house grinders).

If necessary wooden structures must be replaced and treated with agents that prevent the penetration of insects - pests, mold and fungi.

Flat plane check:

• screws are twisted at the corners of the disassembled ramp so that the hats rise several centimeters above the rafters;
• pull the string. You can use the level to check how even the surface of the future roof is, and whether there are bumps or notches in the plane of the slope;
• if the threads stretched diagonally barely touch each other, then the plane is perfectly flat, otherwise you need to unscrew the screws and bring the plane to the desired state;
• the final leveling is carried out using an edged board, fastened to the beam with bolts.

After that, you can use the extreme rafters as beacons and revise the entire structure.

To correct defects, you can use edged board, and elements that have completely become unusable must be replaced, not forgetting to pre-treat them with a special compound.

Repairs can be quickly handled by a couple of people with minimal experience in construction work.

Conclusion: Independent revision and repair of the truss system will save significant funds for materials and payments, which are expected with the complete replacement of this important roof assembly.

Lathing installation

Do I need waterproofing when replacing a roof from slate to corrugated board?

The answer is obvious - it is necessary. See for more details.

We put . The membrane is attached horizontally to the rafters. You need to start from the bottom and work with an overlap to prevent leakage. The material is fastened with a construction stapler.

Reference: Do not stretch the membrane too much, let it sag a little, this will ensure good ventilation of the under-roof space.

In parallel, installation is underway, if this is not done, it will be impossible to get on the roof without damaging the waterproofing.

• The first step is to install a beam to support the crate.
• The second step will be the fastening of the transverse boards; for this purpose, the edged “shalevka” is well suited.
• Work is being carried out from the eaves to the ridge. The edge boards should go exactly along the edge of the rafters. Other boards are fastened in increments of forty-five centimeters.
• The opposite slope is mounted in the same way, only the ridge board should overlap the opposite board, after which the ridge is covered along the entire length with waterproofing, tightly attached with a stapler.
• The final step in the installation of the crate will be the attachment of wind boards, they are attached to the end and should protrude slightly above the wave of the attached corrugated board.

Installation of the crate under the corrugated board

The stages of work are no different from installing structures for other types of roofing materials.

The only difference will be the choice of brand and wave profile sheets. The step size of the boards of the crate depends on the brand of materials used.

A set of tools for laying profiled sheets

For quality work, you must have at hand:

1. Screwdriver.
2. Hand riveting set for processing joints. Only steel rivets may be used.
3. For cutting metal, scissors or a jigsaw with special files are suitable.
4. In addition, you will need a standard builder's set - a ruler, a meter, a level, twine, a hammer, and with special wide hats and a rubber seal.
5. To ensure good waterproofing, you need a special one, and in case of damage to the top layer protective coating aerosol with special paint.

Installation of corrugated board

Sheets rise along the bars or boards, you can make several holes for hooks in the outer wave. You just have to make sure they overlap.

The creation of a roof is always associated with a mass of various nuances that require attention. Mistakes made during design and installation always cause premature destruction of the roof, so they should be avoided by thinking through all the stages of construction work in advance.

One of the problems is the choice and styling roofing material. In recent years, corrugated board has been increasingly used for roofing, the most important advantage of which, compared with other roofing coatings, is ease of installation, which allows you to perform all necessary work on one's own. How to cover the roof with corrugated board yourself will be discussed in this article.

Characteristics of corrugated board

The professional flooring is sheet material made of zinc coated steel. Sheets often have a polymer coating, giving the material additional protection from external factors. characteristic feature corrugated board is the presence of a profile, due to which the sheets acquire greater rigidity. Since the rigidity of the material is achieved without increasing its weight, it ultimately turns out to unload the entire roof structure.

Covering the roof with corrugated board is carried out in several stages, going in the following sequence:

• Choice suitable material;
• Taking measurements;
• Transportation;
• Preparation of tools;
• Preparatory roofing work;
• Direct installation of a covering.

Material selection

There are several parameters that you need to carefully consider when choosing profiled sheets for a roof:

1. Marking. There are several types of profile sheets, but products with the H marking, which were originally developed as roofing, are best suited for the roof. When choosing a specific brand, it is imperative to pay attention to the wave height, which must be at least 20 mm, and the useful width of the sheet. You can use general rule: with an increased slope of the roof, it is worth choosing a lower brand of corrugated board. It will not be superfluous to study the quality certificate when buying material.
2. The presence of defects and damage. Of course, you should not use damaged or deformed roof decking. There should be no cracks, roughness or other flaws on the profile surface, and the coating should be intact. If the sheet bends too easily or breaks at the slightest bend, then it is strongly not recommended to use it. In addition, really high-quality corrugated board after arching returns to its original state on its own.
3. Price. This option is especially relevant for limited budget allocated for construction. The cost is affected by the thickness of the products and the type of coating. Different manufacturers can have exactly the same corrugated board, so you should study the market and choose the most suitable option.
4. Coating type. Zinc coating is usually used to protect corrugated board from corrosive attack. The thickness of the protective layer varies, so you need to select the material taking into account the operating conditions. In addition, most profiled sheets also have a polymer coating that provides additional protection and enhances the visual quality of the material. It is worth noting that corrugated board is used not only for roofing. For example, quite often they make an interfloor overlap according to a profiled sheet, which allows you to quickly perform such work.

Do-it-yourself measurements

Before covering old roof corrugated board, it is necessary to carry out a number of measuring operations:

• All items must be measured. roof structure and adjust them to the required size;
• Special attention is paid to the roof slopes, which is associated with a possible change in the dimensions of the structure during the installation of the truss frame;
• Divergence of the lengths of the diagonals roof slopes cannot exceed 2 cm, otherwise the support structure will have to be redone;
• Roof slopes should not have height differences of more than 5 mm per 5 m of length.

Transportation of corrugated board

Profile sheets, despite the high rates of mechanical strength, may well be deformed and become unusable if not transported properly, therefore, it is necessary to follow these recommendations:

• For the transportation of corrugated board, a solid and durable base is required, the length of which exceeds the length of the sheets;
• Sheets must be firmly fixed so that they do not rub or move during transportation;
• You need at least two people to load and unload the material, since profiled sheets cannot be dragged or bent;
• It is possible to lift sheets directly onto the roof only one at a time, using stretched wooden logs.

Roof covering tools

In order to cover the roof with corrugated board, the following set of tools is required:

• Scissors (for a thin profiled sheet, nibbler or lever scissors are suitable, and for products with a thickness of about 1 mm, it is best to take an electrically driven device);
• Drill;
• Sealant application tool;
• rivet pliers;
• Knife for cutting heat-insulating material;
• Construction stapler;
• Template for mounting the crate;
• wire cutters;
• Screwdriver;
• Marker;
• Roulette and level;
• Hammer;
• Lace.

Preparatory work

The entire stage of preparation comes down to the arrangement of the truss frame and lathing - the mandatory elements that make up any roof structure. In addition to their supporting function, these elements evenly distribute the weight of the roof and allow it to withstand certain conditions operation.

A properly designed and assembled crate greatly simplifies roofing with a profiled sheet - it is attached directly to its elements. The presence of a full-fledged crate also provides ventilation roofing cake, which reduces the effect of moisture on the structure.

Installation technology of corrugated board - how to block yourself

Before you cover the roof with corrugated board with your own hands, it is necessary to determine the amount of overlap of the sheets, which is determined depending on the slope of the slopes:

• With slopes of less than 15 degrees, the minimum overlap is 20 cm;
• If the angle of inclination is in the range of 15-30 degrees, then the overlap should be from 15 to 20 cm;
• With a roof slope of more than 30 degrees, the overlap of corrugated sheets can be reduced to 10-15 cm.

When all stages of preparation are completed, you can begin to cover the roof with corrugated board, for which the following algorithm is used:

1. Using a screwdriver and self-tapping screws, the corrugated board is attached to the crate. Fastenings must be carried out in places of wave bending. To make the fastening reliable, you need to select galvanized self-tapping screws with a rubber seal. The consumption of fasteners is usually about 6-8 units per square meter.
2. In the upper and lower parts of the slopes, self-tapping screws are screwed into the lower wave of sheets, and all other sheets are attached to each board of the crate. Between themselves, the sheets of corrugated board are connected in the upper bend with a fastening step of about 50 cm.
3. Last page, located on the side of the pediment, is usually laid with a large overlap or cut to the required size. End plate should be installed with an overlap of at least 5 cm, and its fasteners should be located in increments of 30 cm so that the element covers the first wave of the sheet.
4. You also need to install the eaves overhang board in advance. It is installed with an overlap of about 10 cm. The pitch of the cornice fasteners is 30 cm.
5. For the arrangement of internal joints, you need to use a corrugated board that has a smooth surface. The roof under the joint should be covered with the most durable material. The space between the edge of the corrugated sheet and the inner joint must be filled with a sealant. At the top of the wave, the joint is connected with nails, and at the bends with self-tapping screws. The fastening step is 30 cm. The end of the profiled sheet is placed under the ridge bar, and the remaining cracks and gaps are carefully sealed.
6. The last stage of work is the installation of a ridge bar, the elements of which are installed with a 10 cm overlap and fixed every 30 cm with self-tapping screws.

On this montage roofing completed.

Conclusion

In this article, the question of how to cover the roof with corrugated board with your own hands was considered. This work is not difficult if you approach it wisely and competently complete each stage of the roof arrangement.

Material such as corrugated board has long been known to everyone and is used in construction in a variety of “roles” - fences are installed from it, garages and sheds are built, and roofs of outbuildings, small houses and even large mansions are covered. Decking 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 the roof with corrugated board, you need to carefully study the instructions, and then purchase high-quality roofing and consumables, prepare all the necessary tools.

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

Advantages and disadvantages of corrugated board as a roofing material

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

TO positive qualities This material includes the following:

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

negative qualities corrugated board can be called:

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

Choice corrugated board for roofing

Decking 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 sheds, or to cover outbuildings. It is also often used for building site fencing. Unpainted corrugated board has a fairly low cost, but is not very suitable for covering residential buildings, as it has low performance characteristics and is not very attractive in terms of aesthetics.

It is very popular, which has a decorative protective coating of polymer compositions. This material is more durable and able to withstand quite severe loads. Certainly this — with proper installation, which largely depends on the angle of the slope of the roof slopes.

Several types of corrugated board are produced with a protective and decorative polymer coating:

• Bearing (H) - designed to cover the roof, floors and canopies.
• Wall ( FROM) - used for the construction of a fence, hangars, garages.
• Universal (NS) - suitable for roofing, installing fences, building garages, utility facilities, etc.

It is better to use a carrier to cover the roof, but last resort any of the above types can be used.

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

Marking	The appearance of the corrugated board	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
C21		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 board can have a 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 below clearly shows which layers cover the outer and inner side.

External side of the roofing material:

• The basis for corrugated board is a steel sheet.
• Steel is coated with 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 keep it from fading and peeling.
• For transportation and storage of corrugated board, it can be additionally covered with a film coating on top, which is removed after installation.

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

The color scale of a professional flooring is rather various. According to the most conservative estimates, the color range is represented by at least 30 shades, so choosing the right one will not be ore. The color layer on the surface can be applied by powder or using special technology polymer coating.

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

• To make sure 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 marking of the material is checked, indicating its purpose, thickness and wave height.
• The appearance of the material is evaluated. 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, the uniformity of the coating. The appearance can tell a lot about the quality of the corrugated board - if during the inspection a peeling of the coloring layer or burrs on the sections are found, then it is better to refuse the purchase.
• Another criterion is to check the corrugated board for bending - 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 a fold should appear on the coating.
• Type of external decorative coating - polymer or powder. The highest quality corrugated board coatings are matte and plain polyester and plastisol. Coating data must also be stated on the product certificate.
• Material price. It must be remembered that you should not choose the cheapest material - it is unlikely to be of high quality. Moreover, all corrugated board has a very affordable price.

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

Prices for various types of corrugated board

Decking

How to avoid damage during transport and installation of the material?

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

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

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

• Transportation of a professional flooring is made on trucks. The sheets must be stacked in piles 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 fastened with slings to avoid the sheets rubbing against each other when the car is moving, since this can lead to damage to the protective coating.
• The car transporting the corrugated board must move at a speed of no more than 80 km / h.
• It is very important to ensure that the unloading of the roofing is carried out with the utmost care. If unloading will be done manually, it is desirable that each of the sheets be removed from the stack separately, transferred and placed in the place prepared for them. It is best to prepare the flooring from boards and plywood, covered with polyethylene on top.
• It is required to ensure that none of the sheets is bent during transportation, since it will not be possible to return it to its original state, which means that during coating, gaps form between the sheets that will violate the evenness and integrity of the roof.
• To raise the corrugated board to the roof without harming it, you must also do it correctly:

- for accurate lifting of the material, logs will be required, which 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;

- the laying of corrugated board on the roof itself can be done by two masters, but it is better to lift the roofing material to a height with three people - this is an additional insurance for the integrity of the material and the safety of work.

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

The maximum risk of damage to the material is added if a large area of ​​​​the roof is covered, since during the installation and fastening process it will be necessary to walk on the already laid roof. Therefore, it is necessary to choose the right shoes for work - it 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. It is possible to 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.

In order for the installation to take place neatly, without unnecessary damage to the roofing material, you need to use only high-quality tools. For work you will need:

• Screwdriver.
• Roulette.
• Scissors for cutting metal up to 0.6 mm thick.
• Marker for marks.
• Level.
• Electric drill.
• Rubber mallet.
• Electric jigsaw or electric scissors.
• Soft brush for sweeping away metal shavings.

Features of the installation of corrugated board 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 in the process of covering with roofing material depends on the slope of the roof. It is very important to correctly position the boards or lathing bars, as well as observe the required amount of overlap of corrugated sheets.

• If the slope of the slope is 5 ÷ 10 degrees, then the crate is made solid 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 horizontally in two waves, and the top to the bottom row should be at least 300 mm. And with such a small slope of the slope, the gaps between the sheets of corrugated board are most often filled with sealant, since there is still a risk of water leaking between them, especially in windy weather.

• With a roof slope of 10 ÷ 15 degrees, the distance between the lathing bars is 400 ÷ 450 mm, and adjacent sheets are overlapped in one wave. The top row should overlap the bottom row by 200 ÷ 220 mm.
• With a roof slope of more than 15 degrees, the lathing bars are fixed on the rafters distance of 550 ÷ 600 mm. The overlap of the sheets stacked next to each other is made in one wave, and the top row is superimposed on the bottom row by 170 ÷ 200 mm.

To make it convenient to mark and fasten the battens, it is cut to the right size, for example, 600 mm, which will help to mount the frame under the roofing much faster.

Order of fixing sheets

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

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

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

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

Rules for fastening corrugated board

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

• If the roof is covered with canvases that are solid 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 from above with a ridge element.
• The second sheet is overlapped with the first one or two waves, depending on the slope, aligned with the overhang of the first sheet and screwed with a self-tapping screw.

• Subsequent canvases are laid and aligned also along the overhang and fastened together on the crest of the wave. Their fastening takes place from the eaves to the ridge with a screwing step of 500 mm.

• When 3 ÷ 5 sheets of corrugated board are laid, and they are aligned along the edge of the overhang, their capital is fixed to the crate. The canvases are attached to the crate in the lower part of the wave, immediately after the overlap of the sheets, 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 with each other they are fixed with self-tapping screws along the bottom of each wave.

If corrugated board is installed with polymer coated, then after screwing in the screws, it is recommended to remove the formed metal chips in order to avoid damage to the protective coating of the roofing material. It is completely swept off the coating with a soft brush.

It is also necessary to stipulate the requirement that the corrugated board should in no case be fixed on the crate with nails or rivets, since such fasteners will not hold the canvas when a high wind load occurs. The wind can easily tear off the roofing, and the nails will remain in the bars of the crate.

Installation of additional elements

In addition to corrugated sheets, there are other elements in the roofing structure that help protect the building 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 elements of the roof include a ridge, valleys, lining of pipes passing through the roof, cornice boards and others.

Skate mount

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 fixed with the same self-tapping screws, through the top of the corrugated boarding waves, with a step of 200 ÷ 300 mm. In order for the fastening to become reliable, it is necessary to foresee two longitudinal boards on both sides of the ridge when installing the crate.

When installing the ridge, it must not be pressed closely to the highest point of the roof - there must be a ventilation gap between it and the inner surface of the ridge element.

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

Since the skate is assembled from separate elements, they are also overlapped. Simple skates, having the shape of an angle, should have an overlap of 120 ÷ 150 mm, and semicircular (tiled) - 100 ÷ 120 mm, with their alignment along the stiffeners.

Take advantage of our article.

Finishing the gable part of the roof from corrugated board

To exclude the possibility that the corrugated board will be torn off by the wind from the end side, the gap between the sheets and the crate is closed with wind angles or planks, which are superimposed on one side of the corrugated board, and on the other - on the first rafter facing the end of the building. The bar is also fixed with self-tapping screws with a pitch of 400 ÷ 500 mm.

Since the planks are also made up of individual elements, they are overlapped by 70 ÷ 100 mm.

Cornice fixing

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

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

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

Valley installation

The installation of a valley is not required for every roof, but only where it has a complex configuration with profile fractures. If there is a conjugation of two planes, turned downwards, then mounting this element is indispensable.

The valley consists of two parts - internal and external.

• The inner part of the valley is laid even before the roofing. It is fixed at the junction of two roof planes and fixed to the crate roofing screws with a step of 350÷500 mm. Separate parts of a long valley are laid, starting from the eaves and rising to the ridge, with an overlap of 150 ÷ ​​200 mm.

• After the sheets of corrugated board are laid (with a shift to the inside of the valley by 80 ÷ 100 mm), a layer of porous sealant is laid between them and the inside of the valley. This material will prevent leakage during rain. Then the corrugated board through the bottom of the waves with a step of 400 ÷ 500 mm, together with the lower part of the valley, is screwed to the crate with self-tapping screws.
• After that, the edges of the corrugated sheets are applied silicone sealant, and the outer part of the valley is laid on it. Just like the inner part, it is composite, so its parts are overlapped by 100 mm, starting installation from the eaves and anointing the joints with sealant.

• After that, the outer part of the valley is screwed with screws to the corrugated board.

Fastening snow retainer

Snow guard- this is an element that will not allow a sharp descent of snow from the roof in the spring, delaying it and giving 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 corrugated board surface 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 their installation, metal plugs are screwed.

Both brackets and slats snow retainers fastened through the corrugated board to the crate. When fixing the planks, they are screwed through the top of the wave, so gaps are formed between the plank and the corrugated board, through which the melt water will leave.

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

If the corrugated roof is adjacent to the wall, then the joint between them must be closed to prevent leakage. For this, there is a special figured bar - 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 junction of the plank with the wall. It is also advisable to make a strobe in the wall in order to hide the upper curved edge of this profile into it. After installation, the strobe can be sealed, for example, cement mortar or tile adhesive for outdoor work.

Seals for corrugated board

Seals are used in roofing works to close the gaps at the joints of the coating with the wall, in places of "fractures" hipped roofs and under the skate.

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.

Making the passage of the pipe through the corrugated board

If a chimney of a stove or fireplace passes through the corrugated boarding, or ventilation duct, then you have to work on . But before do work on exterior finish joints, you need to install around chimney inner apron, which mounted before laying on the corrugated boarding crate.

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

After that, the so-called tie - stripe a metal sheet having flanges, which are mounted from the pipe to the eaves. A tie is needed to drain the water that accumulates behind the pipe during rain.

After that, the lower part of the apron must be fixed for sealant, on the crate and a tie laid on the sides of the pipe, and install the upper edge in a strobe, also on sealant. When installing the parts of the adjoining plank, they must overlap each other by 150 mm.

After the internal work is completed, the installation of corrugated board is carried out. When the roofing material is laid around the chimney pipe, the outer apron strips are mounted, which are fixed on the pipe and on the ridges of the corrugated board on the roof.

The general sequence of roofing with corrugated board

So, knowing how the installation of all additional elements and the corrugated board itself is carried out, we can consider the sequence of work on covering the roof with this roofing material.

• The first step is to cover the truss system. It is laid from the cornice, horizontally overlapping the slope by 100 ÷ 150 mm. The film is fixed with a stapler with staples on the rafter legs.
• On top of the film to the rafters are nailed counter-battens, 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.
• A crate of slopes is arranged perpendicular to the counter-lattice. Here it is necessary to provide additional ridge boards - they are located 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 (angle inward) or ridge element (angle outward).
• Further, wind boards are fixed on the gable sides of the roof.
• Then brackets for the drain gutter are fixed on the bottom board of the crate, and the gutter itself is laid.
• A cornice plank is nailed to the extreme board of the crate.
• The next step is to fix the inside of the valley, if necessary in the roof structure.
• Then you can proceed to the arrangement of the waterproofing of the chimney pipe. A tie is laid along its edges, going to the cornice - it is fastened over the cornice strip. Next, install sealed elements of the inner apron adjacent to the pipe.
• Having dealt with the internal additional elements, which should be under the roofing material, they 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 out using electric scissors. The edges of the corrugated board should cover the parts of the apron fixed on the crate and come close to the pipe. It is possible to leave a gap of 50 ÷ 70 mm.
• Further, at the junctions of the two sections of the roofs, the outer part of the valley is fixed.
• After that, metal elements of the ridge are fixed at the highest point of the roof.
• The last step from the gable side to the corrugated board and the wind board is fixed 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 of their execution, enlisting the assistance of reliable assistants, acquiring necessary material Having prepared the tools, you can safely start covering the roof with corrugated board on your own.

And at the end of the publication - a useful video with the intricacies of the process of corrugated roofing.

Video: important nuances when laying corrugated board as a roof

Good afternoon. Please tell me. Our old house is covered with slate, and we. Is it necessary to remove the glassine under the slate before laying the waterproofing (we wanted to leave it for soundproofing) or can the insulation be laid on top of it? Thanks in advance for your reply.

Decking - a metal sheet, cold-rolled on a special machine, coated with a layer of zinc, a paint layer or another mixture. It is the most popular polyester and comes in many different shades. Pural, plastisol is considered to be a better and more reliable coating. The profiled sheet does not imitate tiling, this is a corrugation in the form of wavy, trapezoidal protrusions, which additionally gives it strength and rigidity.

What are the advantages of corrugated board?

Several types of corrugated board are produced:

• Roofing or load-bearing corrugated board, used for different purposes: for roofing and high fences
• Wall cladding for wall cladding
• Formwork sheets.

The sheet can be of different widths, mainly its range is from 980 to 1850 millimeters. A sheet with a thickness of 0.5 mm is most often used to replace the roof, but there are sheets up to one millimeter thick. The thickness is chosen based on climatic conditions.

When replacing slate with corrugated board, it is best to purchase a sheet eight tenths of a millimeter thick. The height of the corrugation is different, in the range from 15 to 130 mm. The main advantages of corrugated board over slate or any other roofing material:

1. The corrugated board sheet is lightweight: this allows you to quickly and easily deliver it to the construction site and lift it up, and you do not need to do additional work to strengthen the truss system.
2. The sheet of a professional flooring has double protection against climatic actions.
3. It is quite difficult to pierce or damage the material.
4. Long service life - up to 50 years.
5. Unlike slate, corrugated board does not fade in the sun, its color remains for many years, there is no need for frequent painting or any repair work.
6. Decking can be laid on your own, saving on the services of specialists who are not cheap. Even laying with your own hands, without experience, you can make the roof warm and protect it from leaks.
7. Low cost of corrugated board.

What is needed for laying corrugated board

To replace the slate coating with corrugated board, you will need some materials and components. You may need:

• Ridges for the uppermost horizontally lying edges of the roof slope at angled fractures
• End strips for overlapping the end part of the roof
• Valleys for the design of internal joints of the roof
• Planks of internal and external corners to ensure protection of the roof from excessive moisture.

In addition to all this, you will need self-tapping screws (about 8 pieces per square meter), insulation, and a waterproofing membrane.

Do I need to remove the old slate?

About covering the roof with corrugated board is described in the video:

There are two options for covering corrugated board on old slate: leaving the old coating in place and removing it. The procedure for when the slate roof remains in its original place:

1. 1. The slate layer is not removed
2. 2. Vertical rafters are strengthened and installed over the slate, their length must necessarily be equal to the length of the profile on the crate
3. 3. A new roof is being installed, profiled sheets are placed in sections
4. 4. Sheets of corrugated board are attached to the rafters
5. 5. All necessary roofing accessories are installed in the designated places ( drainage system, planks, etc.).
6. 6. The final details are installed - bends and drains.

It is very easy to lay the corrugated board on the roof, two people will be enough for this. The work will take one day.

The second option is to replace the slate:

1. First, we completely dismantle the old slate from the roof, trying not to damage truss system. After carefully inspecting the roof, we find places that need to be repaired or replaced. We immediately impregnate wooden elements with antiseptics, and replace cracked or rotten ones with new ones.
2. We attach the waterproofing film with an overlap to the rafters. In this case, you need to ensure that the film is solid.
3. Now we lay the heat-insulating material. Mineral wool and expanded polystyrene are usually used.
4. Fastening the corrugated board starts from the ends, the overlap is 1-2 waves - it depends on the angle of the roof slope. In places of overlap, the sheets are carefully fastened together; for flat sheets, additional special sealants are used to protect against moisture.

The corrugated board is attached only to self-tapping screws with rubber gaskets (except for the valley), this will protect the structure and material from corrosion, moisture and other damage. It is not recommended to use self-tapping screws with colored heads so that they are not visible against the background of the roof. Before starting to replace the roofing material, it is necessary to carefully calculate the roofing so that the house without a roof is not in the open air for a long time.