Seam roof construction. The device and installation of a metal seam roof. Installation of a folded self-latching roof

If you follow the installation technology of the seam roof, this will prevent corrosion of the coating, the formation of deflections and the development of deformation. Correctly installed material serves its owners for a long time, so it is so important to approach the matter responsibly and carry out installation work, strictly following the instructions and observing safety precautions.

Features and Benefits

This material has a special mounting technique, due to which a reliable lock is created that prevents water leakage.

The roof is separate paintings that are interconnected with the help of folds. They are made of steel roll or sheet type with a galvanized coating. It is processed by spraying non-ferrous metals (aluminum, copper, pural, zinc, plastizor). But copper is considered the most durable and optimal option. This material has a high price, but quickly pays off due to its performance characteristics and amazing appearance.

Distinguish 4 types of seam connections:

• single type;
• double type;
• standing type;
• recumbent type.

The first option is suitable if the roof slopes are located at an angle of more than 15 °. The double version is durable, waterproof, but its installation requires more effort and materials. Standing seams are good for joining longitudinal strips.

The advantages of seam roofing include:

Every material has flaws, and this one is no exception. The disadvantages include the following properties:

1. Requires special equipment to simplify the installation process.
2. High thermal conductivity, so steel roof needs additional insulation.
3. It is required to install a lightning rod and grounding to secure the house.
4. The arrangement of additional nodes is required to reduce the noise output of the installed sheets.
5. During heavy snowfalls, snow avalanches easily fall to the ground with smooth surface, you will have to install delays for snow.

Roof types

It is worth comparing some qualities of materials in order to choose an acceptable option:

Mounting technology

The roof is distinguished not only by the material, but also by the installation technology. The use of sheets is considered a classic. And here roll materials yet more innovative installation. This type of seam roof is distinguished by high-quality seams.

To the benefits roll technology installation can include the following points:

Required Tools

Using the tool for its intended purpose half ensures the life of the coating. You will need the main tool, which is used to construct a clamp for both sheet mounting and roll mounting. When seaming a seam, you can use a tool electric type or mechanical equipment.

The electric machine speeds up the work, because after rolling it itself stops at the last section. The second option involves the use of a special set of ticks. With their help, you can create double or single folds.

But this is not all that is required during installation. Need to prepare in advance and other tools:

• pliers;
• a hammer;
• mallets;
• metal scissors;
• screwdriver and drill;
• level.

Additional tools depend on the characteristics of the building and the method of installation of materials.

Manufacturing and installation

It is worth starting with the choice of crates. For its manufacture, a steel profile, a wooden beam or a board is usually used. The crate should be as even as possible, without any recesses.

The steps should be the following:

Copper seam roof

The ribs and the ridge on the material are straight. If you chose wood for the crate, then cover it with an antiseptic composition. Before installation, fix the cornices along the lower edges. On the initial stage a drainage system is installed. Fix on the crate of the valley, install an anti-condensate film on the truss system to ensure high-quality waterproofing.

stingrays rectangular shape have equal diagonals. Carry out the fixation of the sheets in the direction from the bottom up. If the length of the ramp is over 6 m, assemble it in several parts. Installation is carried out with an overlap. When installing a copper roof, you can use a seaming machine: it will improve the tightness of the sheet connection. Such a roof will last a long time if you install it on a solid flooring.

For flooring installation follow the general guidelines:

1. Make sure there is a ventilation gap so that it drains the condensate that forms inside the roof.
2. The crate will prevent corrosion of metal parts or damage to wooden elements.
3. Install a crate to reduce the noise generated in the room when heavy rain or hail.

A solid foundation is also required when the roof pitch is less than 14°. Use silicone sealant after seaming to increase the tightness of the sheet joint.

Installation of a folded self-latching roof

In this case, galvanized steel materials are used. Sheets in the form of large canvases are joined together by special grooves. The most popular options for folds include standing and recumbent, which are used in transverse and longitudinal connections. Mounting self-locking sheets is easier and faster.

This type of roof strikes with a variety of textural shapes and colors. You can easily choose the option that will perfectly decorate the building. It does not require special equipment, all the work can be done independently. As a result, you will get perfect coverage, and solid flooring will not let moisture through. Suitable even for roofs with an inclination angle of only 8 °.

The benefits include:

1. Long service life.
2. Can be mounted on different roofs.
3. Provided reliable connection, seams differ in tightness paired with durability.
4. At the seam roof good bearing capacity.

If you decide to choose a seam roof and install it yourself, then the self-latching option will be the most preferable. For high-quality connection of sheets, special equipment is not required. Repair of such a roof is easy: in case of damage, any element is replaced with a new one.

The owner of the house significantly saves on the services of workers if the installation of the seam roof is carried out independently.

If we consider metal coatings, then the seam roof is distinguished by its style. Its installation involves joining the metal into special folds, this is how a sealed and durable flooring is obtained. As a rule, when buying a material, instructions for use are attached to it, and if not, then this article will help you figure out all the difficulties.

Pros and cons of seam coverage

Looking at the finished seam roof, you can immediately mark it unusual view compared to other coatings. In fact, the roofing plane is filled with ordinary flat sheets of metal, and with the help of a folding device they are connected together. If you don't want to mess around with a complex device, you can purchase a self-latching product.

So, what are the advantages of this roof?

• The metal coating has high strength and durability
• The light weight of the material allows the use of a lightweight truss system
• Construction will be cost-effective
• small cost
• Rich choice of colors
• From a smooth surface, atmospheric precipitation is easily removed

Despite this number positive sides, the coating under consideration has significant drawbacks, namely:

• Metal does not protect against noise in any way, and in some cases, on the contrary, increases it. For example, with falling raindrops, you will hear a lot of noise, however, for some residents, this disadvantage is an attractive side.
• During the installation of the seam surface, you will need special devices to create high-quality seams, and it costs a lot. The only acceptable solution to this problem is to hire a team of roofers, but as the roof is losing its popularity, it is not so easy to find them.
• A simple metal will not add aesthetics to the roofing surface, and if you want beautiful roof, you will have to purchase copper, which is several times more expensive.
• The seam roof accumulates electrical voltage over time, which can be released during a thunderstorm, therefore, it is necessary to arrange a lightning rod on the highest section of the roof.

The nuances of the device seam surface

It should be noted right away that metal sheets can be laid on the roof, the slope of which is about 14 degrees. Of course, there are concessions at which the minimum threshold can drop to 7 degrees. If you have just such a situation, then you need to create double folds instead of standard seams and lay the metal on a continuous crate. On flat roofs, all joints must be coated with sealants.

To create a warm and high-quality roof, it is necessary to take care of the heat-insulating and waterproofing layer and, in addition, create good natural ventilation. Some builders don't want to add extra layers of soundproofing because they like the sound of rain, but for the vast majority, this action is necessary.

This can be done by insulating the inside of the roofing pie, or by interfloor overlap.

As fasteners for installation roofing sheets identical material must be used, i.e. if the coating is made of galvanized steel, then the screws must be from this raw material. In addition, they must be equipped with a rubber lining so that the attachment points do not leak. If within a few decades the roof begins to rattle with gusts of wind, then you should pay attention to these details.

As sheet metal is not a very heavy coating, then the crate can be done in any way, namely: solid or sparse. If everything is clear with a solid one, then the step of the elements of a discharged system should be selected so that the sheets do not sag anywhere. As a rule, metal roofs serve up to 100 years, but this is subject to all construction norms and rules, as well as high-quality routine inspections.

Further in the article, you will learn how the seam roof is laid, whether it is possible to carry out installation alone, installation instructions and video useful materials.

Types of seams

For the convenience of the installation process, metal sheets are assembled into one large one on the ground. The resulting plate is called a painting. Seam roofing has only 4 ways of attaching these sheets to each other.

1. Single (standing, lying)
2. Double (standing, lying)

If we consider these types for better tightness, then maximum performance noted at the double lying fold. Such a surface is almost monolithic and is suitable for the installation of sloping roofs. Well, as you understand, the single standing seam is considered the weakest in this list. It is used on roofs with a slope of 15 degrees.

Seam coating can be created from the following metals:

• most economically profitable product is a galvanized steel sheet. It is very easy to install, and ordinary paint is used to protect the material, which lasts for 8-10 years. Of course, it is not necessary to paint the roof, but after a few years stains will appear on it and corrosion will begin. The operating period of a galvanized steel roof is 20 years without repair.
• Steel, coated polymer film. This roof deck can easily withstand prolonged exposure to sunlight, and due to its bright structure, it is a more attractive material.
• The most common metal is aluminum. The service life of such a metal is about 80 years. This is a very good indicator for a relatively inexpensive coverage.

• Residents of a private house with a good income can afford to equip the roof of their house with copper sheets. This material is very resistant to corrosion and only gains strength characteristics over time. Usually, copper roofs last up to 200 years which is far beyond the operation of the building itself.
• If you need not a durable, but the most durable roof, then I draw your attention to an alloy of zinc and titanium. Sheets made of such material are resistant to corrosion and sudden changes in temperature, they are distinguished by their rigidity and can last on the roof for more than 100 years.

The choice of material will depend on the needs of the tenant and functional purpose the building itself, for example, if the building is temporary, then it is better not to spend expensive products on it.

Seam roof installation

The whole process of installing this roofing can be divided into several stages:

1. Preparatory work
2. The device of the eaves and wind strips
3. Installation of additional elements

So, now in more detail about each of the points.

Preparatory processes

At this stage, it is very important to buy a quality product and get a good tool.

The following products are used for the device of the surface:

• Rolled or sheet metal that will be laid on the roof
• Additional elements (cornice strips, ridge, valley, etc.)
• Beams with a section of 5x5 centimeters and boards of suitable sizes
• Gutter details
• Fasteners, including clamps. If the length of your roof slope exceeds 10 meters, then sliding ones are used, and under other conditions - fixed ones.

Seam roof has fuzzy dimensions. It can be created in any length and width, but The highest quality surface is obtained when the slope completely covers the sheet of metal. As you understand, the amount of materials will depend entirely on the size of your roof. In order to reduce its waste, it is best to create a kind of drawing, which will take into account all the smallest details, in addition, rolled metal has the least waste.

The main tool of a roofer when creating a seam roof is, of course, a device that creates such seams, but for high-quality flooring, you will need to use some more devices, namely:

• Shears for cutting metal (alternatively, you can use electric shears or a nibbler)
• Measuring device
• Regulators (level, plumb)
• Wood saw
• Drill with all attachments
• Kiyanka
• Sealant gun
• A hammer
• Other

If you are wondering what the last paragraph includes, then I will answer it as follows. In construction, even the same type of construction is not the same, and in seemingly identical situations, you can use different tools.

Assembling the truss system, waterproofing and battens

Since metal sheets have a small mass, there is no need to arrange rafter legs close to each other. After determining the optimal step, a waterproofing membrane is attached on top of them, and in order for this work to proceed as quickly and efficiently as possible, it is necessary to acquire countertrays in advance (the cross section must be at least 30x60 millimeters). As for their length, it should correspond to the width of the roll membrane, which is 1.5 meters. As a rule, a sealant is placed under the counters, which plays the role of a sealant and blocks moisture from entering through the holes left as a result of fastening.

IMPORTANT: All wooden elements that are used in the truss system must be processed special solutions. Antiseptics and flame retardants will reliably protect lumber from decay and fire.

The device of the waterproofing sheet must pass clearly from left to right and move from bottom to top. After attaching the first strip of material, the second strip is laid with an overlap of 15 centimeters. As a docking material, construction tape or butyl tape is used. In addition to its main task, this material creates a barrier to the release of heat, which has a positive effect on the entire roof. It is worth noting that the lower part of the waterproofing membrane must be displayed on upper part overhang Thus, the accumulated moisture on the material will be discharged into the drainage system, which is mounted even before the start of this process.

As alternative a standard lumber crate can use a steel profile, but, as a rule, everyone refuses this. wooden elements discharged crates must have a reliable cross section: 30x100 or 50x100 millimeters. In the case of a copper roof, the base under it is created solid, and all other materials can be laid on a discharged one, the pitch of the boards of which is 20-25 centimeters. As additional protection the seam roof valley and the edges of the slopes are equipped with a continuous crate.

Roof plank installation

One of the nuances of a seam roof is that the lower part of the roof in contact with the drainage system must be mounted before the main elements. This can be done by installing a cornice board, but if you have not purchased given element, then you can create its temporary alternative. To do this, a corner bar is arranged on the overhang, and on top of it, with an overlap of 2 centimeters, a sheet of metal is attached, which will be a moisture collector.

After working with water drainage, you can begin to create a base for wind strips. As this, ordinary bars with a section of 30x50 millimeters will fit.

Assembly of paintings and their fastening on a slope

Laying metal sheets by the folded method can be carried out in only two ways:

1. Traditional method. The paintings are assembled on the ground and after they are lifted they are fixed on a slope. Symmetrical arrangement allows you to create a beautiful appearance roof as a whole. The whole process of the device can be described in a few words. The paintings are lifted onto the roof slope, laid out in right order and connect them using a single or double seam seam. In the case of metal flooring for large volumes, in addition to vertical seams, horizontal ones are also used.
2. Modern Method. This technology has some difficulties, since metal in rolls is used for the flooring device. Before laying, it is cut into the necessary pictures, observing the desired length and creating bends for future seams. As a rule, a double fold is created on such metal, followed by sealant treatment.

If you are going to do everything yourself, then the most suitable option will be the acquisition of metal sheets with a self-latching mechanism.

An important nuance is the delivery of material to the roof surface. It must be carried out in accordance with all rules and regulations. The most important of them are:

• Can't be held roofing in windy weather
• All material must be delivered on the roof one by one
• There must be 3 people at work. Two of which will serve and one will receive
• With a large mass of the product, use long lags

After the material is delivered to the surface, you can proceed with the installation of the roofing.

The whole process begins with the so-called starting picture. It is attached to the wind bar with the help of self-tapping screws so that a protrusion is formed. Experienced roofers advise not to tighten the screw to the end and leave a turnover somewhere. This will prevent the metal sheet from deforming during its heating. When using material without self-latching mechanisms, fastening to the crate is carried out using clamps.

If the length of the sheets was not chosen correctly, and it is much less than the slope, then the laying of the flooring should be carried out on the left. The last sheet of metal should be cut so that it protrudes 30 centimeters beyond its limits. After that, this edge is bent up.

If you have any questions, see how the seam roof is installed in this video:

Installation of additional elements

Work on the device of the roof is completed by the installation of additional elements, namely: the ridge, protective aprons, valleys and other less important elements.

Since the roof is metal, you need to take care of good ventilation. As a rule, most developers use ventilated skates and this is the most rational thing to do. Often on metal roofs in the attic, the air is very humid, therefore, the metal will soon begin to corrode. In order to remove humidified vapors, this element is mounted.

The skate is arranged exactly on the parts of the paintings bent upwards, and if they are absent on the slope, then the fastening takes place using a special Z-bar. Her body has perforations, which has a positive effect on ventilation in general. The ridge element, as a rule, is selected for architectural design. It is produced semicircular, triangular and flat.

If the roof of your house has a complex truss system, then an angle called a valley is formed at the junction of the planes. Such elements should not be ignored, as they are most susceptible to moisture. In addition to the drain for water, the valley should be equipped with a continuous crate and a waterproofing layer, just like the overhangs of the roofing plane. fasten waterproofing material best of all with a construction stapler, and for greater sealing, the joints are smeared with mastic.

Repair work on the seam roof

Any responsible owner of a private house knows that annual preventive inspections of the roof surface are an integral part of living. Their minimum number is 2 times, one of which falls on the warm part of spring (when the snow on the roof begins to melt) and in autumn (to prepare the building for wintering). During this process, flaws that can cause leakage should be identified.

It is worth noting that in most cases the causes are minor and may require replacement of the sealant or fasteners of the paintings, but if annual preventive inspections are ignored, several paintings may need to be changed.

As you already know, aluminum and galvanized surfaces are attractive for developers. The fact is that they are the easiest to repair. You can use the patch device to close the problem area. By the way, if you are going to do this, then after the end of the process, do not forget to protect the newly created seams.

The easiest way to repair an aluminum roof is to patch it with self-tapping screws. To do this, you need to find a piece of material that will cover the problem area by 10 centimeters on each side. Next, we apply it to the base and fasten it with screws. After that, special roofing glue is poured into the seams. The procedure with filling the seams is repeated several times throughout the day.

The most common causes of leaks are:

• A large step of the elements of the crate, which causes sagging of the sheets
• Over time, the truss system changed its geometry and subjected the metal sheets to deformation.
• Violation of the tightness of the seams
• The metal coating has begun to corrode or is mechanically damaged

Leaks in any case should not be ignored, as this will lead to decay truss system, therefore, you will have to repair the entire roof, or rather create it anew.

During operation, there may be moments when, with strong gusts of wind, the roofing sheets begin to rattle. The reason for this lies in the fasteners. Check them and replace with new ones if necessary.

If, after reading this article, you still do not understand how the seam roof is laid, and the video did not help, then the only rational solution would be to call specialists. They will not only help to deal with all the difficulties of the roofing installation, but also give a guarantee for their work.a

The work is carried out in several stages.

The first stage: the manufacture of folded "pictures" for ordinary covering of roof slopes, as well as cornice overhangs, wall gutters.

Due to the variety of individual components, for the manufacture of additional elements and rental of paintings, the necessary blanks of various shapes and sizes are made right on the construction site, based on the drawings of the future roof. steel sheets, cut into strips, the specialists of our company manufacture (roll) on our own German equipment of the SCHLEBACH company, which forms a finished picture with a double standing seam.

Second phase ( seam roof installation): paintings are lifted to the roof and their sides are connected to each other with a standing seam. Then the paintings are attached to the crate with narrow steel strips - clamps, which are led into standing folds at one end when they are bent, and the other is attached to the crate beam.

Thus, a high-quality roofing is obtained, without any technological holes. Holes at the flue and gas pipes, including ventilation ones, are covered with galvanized steel aprons.

Galvanized roofing cannot be painted with conventional enamels, nitro or oil paints.. Roofing galvanized steel is coated in the factory with protective polymer coatings. More often this is done with rolled roofing materials. The roll technology is so called because the roofing "paintings" are made directly on construction sites from metal delivered in rolls and can be of length equal to the length roof slope. This is what allows you to avoid transverse (lying) folds. The connection of roofing paintings is carried out, as a rule, in a double standing seam. To ensure complete impermeability of the joints, the fold can be sealed with special sealants.

Advantages of roll technology (double standing fold):

· the possibility of using not only ordinary galvanized steel, but also polymer-coated steel, which is more corrosion and wear resistant than traditional steel, and therefore more durable;

provision high degree tightness of the coating (due to rolling into a standing double seam of longitudinal seams of adjacent roofing sheets and, as a rule, the complete absence of horizontal lying seams);

high manufacturability and reduced labor intensity of work;

practical noiselessness, which is extremely important when working in densely populated areas;

· possibility of application for roofs with any slope, any even complex configuration and any size;

· the mobility of the equipment, which allows you to perform all the work not only directly on the construction site, but also directly at the workplace of the roofer.

Installation of a double standing seam (folded roof)

Installation of a seam roof using the technology of a double standing seam is carried out on a solid base using special aluminum clamps.

click-fold

There is another modern type of folded roof: from special steel panels with self-latching folds - Click-Falz.

Roofing system Click seam - competent and actual solution for roofing, as the installation technology, compared to other roofing materials, is much faster and easier.

Pictures are made on modern European equipment in various polymer coatings and various thicknesses from European and domestic steel. The length of the picture is made to order in the range of 1.2 - 9 meters. Unlike the classic double standing seam, the click seam is not made in materials such as copper, zinc, titanium, and aluminum. All additional elements are produced in a standard version and are mounted on self-tapping screws, and, unlike a double standing fold, it is impossible to click a fold on the site of an object under construction.

One of the peculiarities of the roofing, made in click-seam panels, is the possible presence of waviness in the paintings, which is caused by the specificity of this material. To reduce the effect of waviness will allow metal with a matte polymer coating.

Such folds are connected to each other without using a special tool.

Click-fold installation

Features of installation of a roof from folded pictures:

A properly installed seam roof is not a guarantee of leakage if roofing cake, mounted with deviations from the norms and SNiPs.

When installing a roofing pie, it is important to observe the technically competent execution of nodes, which will ensure proper ventilation and prevent heat loss. If we consider the entire roofing pie, then you need to approach each node carefully and pay attention to all the subtleties and nuances.

We recommend using first grade lumber and GOST, so that the board is calibrated, thereby eliminating the risk of steps and waves in the rebate coating. With an insulated roof, it is necessary to use not only a good multi-layer waterproofing membrane, but also a high-quality vapor barrier film mounted under the heater. When choosing a heater, our company uses and recommends mineral wool based on basalt. Also important point, is the processing wooden structures roofs with a fire-bioprotective composition, which will prevent premature failure of truss structures. All fasteners must be galvanized from trusted manufacturers. As a rule, when performing work on the installation of a rafter system and a roofing pie, galvanized screw or ruffed nails are used, and movable and fixed stainless steel clamps are used for hidden fastening of folded paintings.

We wrote about how to choose a material for a seam roof, as well as what types of seam joints are considered the most reliable, in. Today we will talk about the design features metal roofing and about the technology of its installation.

Guaranteed to protect the seam roof from condensate, deformation and depressurization will help compliance certain rules concerning the arrangement of the roofing pie, the features of laying the roofing itself and the sequence of its installation.

In this article, we will consider the following questions:

• What elements does a seam roof pie consist of.
• How to equip the cornice overhang of a seam roof.
• The sequence and technology of installation of folded panels.
• Arrangement of valleys and junctions of seam roofing.

If the construction of a house begins from the foundation, then the arrangement of a seam roof begins with the creation of a roofing cake that protects attic space from condensation and cold. At the same time, the roofing cake serves reliable protection noise from rainfall.

Pavel T. FORUMHOUSE User

If the roof insulation is 250-300 mm (I have 300), then no noise is heard (unless, of course, hail is the size of an egg). The only place where I can hear the rain (and even then weakly) is in the bathroom, which has a stretch ceiling.

In order for the thermal insulation to be of the required thickness, the insulation can be laid in several layers (between and under the rafters).

The roofing pie of the seam roof consists of several layers:

Let's consider them in more detail.

Supporting crate - the lower wooden slats, on which a vapor barrier film and insulation are placed.

Vapor barrier film is a special material that does not allow moisture to penetrate from the room into the insulation.

Rafters - wooden beams with a section of 200x50 mm. The distance between the rafters is 1.2 ... 2 m.

Mineral wool is most often used as a heater. The insulation is laid between the rafters directly on the vapor barrier film, which, in turn, is supported by the lower crate.

Waterproofing is a special film that allows moisture to pass through only in one direction (from bottom to top). Waterproofing does not allow under-roof condensate to penetrate into the insulation, but allows moist air to accumulate in the layer mineral wool. Waterproofing film is a diffusion (breathable) membrane that is sold in hardware stores.

berd80 FORUMHOUSE User

Can be spread diffusion membrane, you can use a special volumetric membrane (it only costs decently). No consensus was reached on this issue.

Waterproofing spreads across the rafters in the direction - from bottom to top (starting from eaves plank, towards the skate). The film is attached to the wooden rafters with staples (using a stapler). Individual strips of the waterproofing membrane are overlapped (overlapping width - at least 100 mm). On gable overhangs, it is necessary to provide an overhang of the film (the width of the overhang is approximately 150 mm).

The film should not be in a taut state, and the allowable sagging of the membrane between two adjacent lags is 35 mm.

In no case should the same material be used as a vapor barrier and waterproofing. Moreover, you can not change their places. All this will lead to the accumulation of moisture in the insulation or, conversely, in the room. The development of mold and the consistent destruction of building structures in this case are guaranteed.

Counter-lattice - a beam 50x50, which is nailed to the rafters on top waterproofing film. The counter-lattice allows you to create an air gap between the waterproofing and the seam coating.

A special sealing tape is placed under the counterbars, which ensures tightness in the places of nail joints and protects the insulation from moisture.

Lathing - transverse strips nailed to the counter-lattice at a certain distance.

Arhios FORUMHOUSE User

A bar 50x50 (counter-lattice) is nailed along the rafters, and on them (across) - planks 100x25 with a run-up (batten).

The counter grille provides ventilation of the under-roof space, which eliminates the condensate that forms there. In order for the counter-lattice to perform its functions with guarantee, the cornice overhang of the seam roof must be made according to the following scheme:

The crate must be strong, rigid and even. The maximum clearance between the crate and the control rail 1 meter long must not exceed 5 mm.

Effective ventilation of the under-roof space is provided by a ventilated ridge.

As well as a ventilation mesh PVC tape, which is stretched between the crate and the frontal board of the cornice overhang.

Thanks to these two elements, a constant blowing of the under-roof space is ensured.

The step of the crate deserves special attention - the distance through which the transverse strips are nailed. In accordance with the set of rules for the arrangement of a metal seam roof (SP 17.13330.2011), the distance between the individual laths of the crate should not exceed 200 mm. This allows the foot of a person walking on the roofing to rest on two boards at once, which protects the metal from deformation.

Along the edges of the roof (in the places of roof overhangs), as well as in the gutters, a continuous boardwalk with a width of at least 700 mm is created.

Some users of our portal recommend making a continuous crate over the entire area of ​​​​the seam roof, which, in general, is not a mistake (especially if this coincides with the recommendations of the manufacturers of seam paintings). For example, in accordance with technological requirements, a continuous crate in without fail"spreads" under the zinc-titanium roof.

A solid crate is a conditional concept. A small gap (no more than 10 mm) must be left between each transverse plank of the crate, which will compensate for the thermal expansion of the wood.

For more details, you can find out by visiting the corresponding FORUMHOUSE section.

Procurement of materials

If you decide to make seam paintings from rolled or sheet metal, then you cannot do without the use of sheet bending and seam-rolling machines. It is not advisable to purchase such equipment for personal construction. But this does not mean that metal should be bent manually.

vasilpolt FORUMHOUSE User

It is better to use the service of a team that has a machine for rolling pictures. The quality of the roof in this case will be better than if you bend the rolled products by hand. There is even a separate service - "Picture rental". Virtually every roofing company that has the necessary equipment offers it to their customers. Try searching in your area.

Also, with the help of sheet bending equipment, you can make the necessary additional elements. What kind of extensions will be needed for construction - it depends on the design features of the roof.

The photo shows typical profiles, the geometry and dimensions of which may differ depending on the characteristics of a particular roof.

Device and installation of the cornice unit

Installation of a folded roof begins with the arrangement of cornice overhangs. Immediately pay attention to the fact that the cornice overhangs have a different design. It directly depends on the design. drainage system. Drainage systems, in turn, can have hanging or wall drains.

The cornice overhang with a hanging gutter does not have transverse seams, which makes the roof more airtight and easier to install. Given that snow and ice can easily damage the suspended drain, the roof surface with long slopes has to be equipped with additional elements for snow retention.

A system with wall-mounted drains and flat top ebbs has a more complex design, and its installation is best left to experienced tinsmiths. The rigidity of the system with wall gutters is an order of magnitude higher than that of its counterpart with hanging gutters.

Roofer1959 FORUMHOUSE User

Regarding the gutters: if they are done correctly, then any are good. Wall-mounted - more reliable in terms of rigidity, and I can vouch for its safety. But there is a weak point - eyeliner paintings (especially if the fold is single). Suspended is deprived of this minus, but its rigidity at certain conditions operation may be called into question.

There is no consensus on which drain should be installed complete with a seam roof. But no matter which option you personally like, the eaves knot will have to be equipped according to the same principles.

Installation of the cornice unit begins with the installation of drips and ventilation tape.

The lower cornice profile - a "drip" (through which the condensate formed in the under-roof space will drain) - is mounted on the rafters and covered waterproofing membrane. This is done at the stage of arranging the roofing pie.

Between waterproofing and drip should be applied thin layer adhesive or roofing sealant.

Sometimes the bottom drip is not used at all: for example, if the under-roof space is well ventilated (using a ventilated ridge on top and a ventilation tape on the bottom). But it is better if it is, after all, installed.

nekorsakov FORUMHOUSE User

Installed first plastic mesh on the gap between the crate and the frontal board. On top of the mesh, cornice strips were stuffed, which were fastened to the crate with galvanized roofing nails, hammering them in a checkerboard pattern. The slats were mounted along a cord stretched along the cornice overhang, and the mesh was simply attached close to the edge.

PVC mesh protects the roof space from insects and debris. The distance between the cornice strip and the ventilation mesh must be at least 2-3 cm.

If it is planned to use suspended gutters as part of the roof, it is necessary to think in advance how to install cornice hooks for the gutter system. So, long cornice hooks, which are attached to the upper crate, are wound directly under the eaves bar. Under each hook, it is necessary to make a recess in the surface of the crate. Otherwise, the folded pictures along the edge of the overhang will go in waves.

To give the cornice overhang additional rigidity, metal roofing crutches are installed under the cornice strip.

The crutches cut into the flooring flush with the surface of the crate (similar to gutter hooks) and are attached to it with self-tapping screws.

The distance between two adjacent crutches is 60-70 cm.

Standard crutches are commercially available, but it is quite possible to make them yourself. For the manufacture of crutches, a steel strip is most often used - 40x4 mm. Billets of the required size are welded together, after which they are drilled and subjected to anti-corrosion treatment (treated with a primer).

Fasteners for galvanized roofing (including crutches) must be made only from galvanized steel.

The standard T-shaped crutch for the eaves has a width of 100 to 200 mm, and its length depends on the design features of the roof.

Crutches are used to reinforce cornice overhangs, as well as other roof elements. Therefore, they can have different geometry, which depends on the direct purpose of the product.

Seam joints themselves are already stiffeners. Therefore, on roofs with suspended gutters, roof spikes may not be used, but may be replaced by strips of galvanized or painted metal. They are installed along the overhang. Steel strips are placed on top of the eaves strip or placed under it - depending on the geometry of the eaves profile.

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Before the installation of the folded paintings, it was necessary to install additional metal strips that reinforce the rigidity of the overhang and form a protrusion (50 mm), for which the folded edges were then fastened and crimped.

Seam roofs equipped with wall gutters and flat flashings must be reinforced with roofing spikes without fail.

Having completed the arrangement of the cornice assembly, you can proceed to the next stage of work. But first, let's talk a little about the construction tool.

Tools and fixtures for mounting folded paintings

A mallet (plastic, wooden or rubber) and a hammer are tools for forming bends and other elements of a seam roof.

Shlyazen (mandrel, mandrel-blade) - a device that serves to form ridges and arrange locks at junctions (valleys, bypasses ventilation ducts and chimneys, etc.).

Straight and corner pliers (large and small) for forming seam bends and other complex elements and roofing.

Crimping roof frames - used for crimping L-shaped and double seams. In fact, both frames are used to close the double fold, because its folding is carried out in two passes: the L-frame closes the single standing fold during the first pass, and the frame for closing the double fold is used during the second pass.

There are also frames for bending roof overhangs. They are used when mounting various paintings (including self-latching ones).

A set of scissors for metal with various cutting angles.

It is impossible to cut the panels with a grinder or other abrasive tool! It destroys protective covering material.

Installation of roof slopes on the example of a gable roof

Installation of roof slopes begins with installation launch pad. The key difference between the launch panel and the ordinary panel lies in the special geometry of the profile, thanks to which it is possible to attach the picture to the crate from two sides at once.

The step between adjacent fasteners (clamps) is 40 ... 50 cm.

Clamps must completely repeat the geometry of the bends that are on the side shelves of the folded paintings. Such fasteners can be made independently, or can be purchased on the construction market.

If the length of the roof slopes exceeds 6.5 meters, experts recommend using movable clamps that allow you to compensate for possible deformations from the thermal expansion of the panels.

After installing the starting picture, the rest of the roof is installed.

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Next to the laid and fixed picture, the next one is laid, which overlaps (with a folded edge) closes the nail shelf of the previous panel. Both paintings are crimped into the lock together with already installed (hidden) clasps. The result is a very reliable and tight connection, because all the fasteners are covered with sheets of metal.

Seam joints are crimped in a standard sequence. First, with the help of a frame for closing the horizontal lock, the first crimp is made. Then, with the help of a frame for closing the double seam, a second crimp is made.

The finishing picture is cut to size (so that it does not protrude beyond the gable overhang), folded over and fastened with clamps to the crate. Gable overhang subsequently closed with a special profile.

Foamed soundproofing tape, which can be placed under the seam panels along their entire length, additionally protects the room from rain noise. The tape is cut to size and stapled to the crate.

We have described the sequence of installation of paintings made on folding equipment according to individual sizes. Installation of a self-latching roof has its own nuances.

For example, during the installation of self-latching panels, roofing screws are used instead of clamps, which are screwed into the nail strips of the seam paintings. There are elongated holes on the nail strips that help to compensate for the thermal deformation of the panels.

For fastening clamps and self-latching panels to a wooden crate, use roofing nails or galvanized self-tapping screws with a press washer (for wood), which have a flat head.

To prevent the self-latching roof from rippling in hot weather, the self-tapping screws must be screwed exactly into the middle of the oblong hole. At the same time, having screwed the self-tapping screw completely, it should be unscrewed by about a quarter of a turn (so that the panel can move slightly under the action of thermal expansion).

Roofing in places of cornice overhangs

The ridges of the folded paintings, located in the places of the cornice overhangs, should be cut (literally by 2 ... 3 cm).

After that, the remaining (protruding) part of the picture will easily bend under the cornice overhang, forming a reliable and tight cornice ledge.

It is not necessary to completely remove the extreme part of the comb. It can be bent by forming a neat decorative cap at the end of the fold.

Installation of side end plates

We present the installation scheme of the side gable profile.

1. The bar to which it is attached wind bar(the dimensions of the beam are selected based on the geometry of the wind profile).
2. Roofing screw"metal-wood".
3. Side end plate.
4. Start/finish panel of seam roofing.
5. Self-tapping screw with a press washer.
6. Klammer.

At the junction of the roof slopes, the end strips are connected as follows.

Installation of a ventilated ridge

The main elements of a ventilated ridge are: the upper ridge profile, ventilation grille and supporting elements.

nekorsakov

I decided to put the lower (supporting) slats between the crate and the picture, without fixing anything additionally. On top of them I mounted the upper strips (with some overlap). As a result, the support bar is held not by individual self-tapping screws, but by a whole roofing sheet, fixed with clamps and crimped with adjacent sheets. In this mounting option, the perforated wall of the support bar turned out to be pushed deep from the edge, which seemed to me better both aesthetically and functionally (away from the "aggressive" external environment with its sediments).

Pipe Bypass

Chimneys and ventilation shafts are protruding elements, bypassing which, when arranging a seam roof, requires certain skills in performing tin work. Consider the standard bypass option using the example of a self-latching roof. It can be installed by any non-professional roofer.

Pieces with locks are cut off from standard seam panels (indicated in red in the diagram). Adjacency strips (side aprons) are formed from them, which, on the one hand, are adjacent to the pipe wall, and on the other, they snap into place with neighboring paintings. The space between the side aprons is closed with abutment strips (upper and lower), which do not have a latch. A hook is made on the top bar, on which a picture is placed, suitable for the chimney from above. The lower bar with a hook lies on the lower picture.

The aprons adjoining the pipe walls are closed with roofing sealant.

Panels that have rolled under a double fold are mounted in the same way at the place bypassing the pipe.

All four aprons, in this case, are connected to the adjoining paintings by recumbent and standing folds.

Valley device

Immediately pay attention to the requirements for arranging the base for the valley bar: the base here will be a solid wooden crate.

The design of metal junctions should ensure maximum tightness of the roof at the junction of two slopes. Therefore, the valley bar must be fastened to the crate with clamps (in no case with self-tapping screws), and the adjoining paintings to the valley should be closed with a double fold.

Sofa owner

Not The best decision- perforate the paintings (and at the same time the valley) with self-tapping screws. It is more correct to make a fold (hem) on the edge of the picture and bring it to the corresponding fold of the valley. The result is a recumbent fold. The size of the overlap is approximately 30 millimeters. The endova, in turn, is fastened with clamps to the crate.

These rules are relevant for folded patterns and profiles made from sheet or rolled products on sheet-bending / seam-rolling equipment. When installing junctions on a “snap roof”, the instructions and recommendations of the roof panel manufacturers should be followed.

Connections to the wall

Adjacency to the wall is a structural element, without which no complex roof can do. Similar connections have simple design and are performed using a special profile.

You can find out more, as well as about the technological points associated with its installation, in the corresponding section of our portal. You can get information by reading the article based on the recommendations FORUMHOUSE users. For those readers who want to see a visual master class on the installation of a seam roof, we have prepared a small thematic video.

To protect the house from the weather, the roof is the most reliable constructive element. At the same time, it is she who decorates the appearance of the entire building. There is a wide variety of types of roofing, among which seam roofing occupies an important position.

A fold is a special seam-lock that connects metal sheets. Seam bends decorate the joints of metal sheets, while ensuring their reliable sealing. The connection operation can be done manually or special equipment is used in the form of rolling devices.

Types of metal sheets

Materials used for the manufacture of seam coating:

Preparatory work, installation of crates

First of all, drawings are made, and detailed instructions how the roof should be arranged.

When preparing the lathing, the type of selected materials of roofing sheets is taken into account. For steel coatings, boards are installed at a distance of 25 cm from each other. copper sheets must have a solid wooden flooring without gaps.

Roof preparation begins at the construction site. Sheets are cut, assembled into prefabricated structures - paintings according to preliminary drawings. At the same time, the edges are bent to form folds. Then the nodes are connected by folds, forming a continuous monolith for the roof slope. The video shows in detail the process of laying sheets.

Various types of seam joints are used:

• single standing fold;
• double standing;
• fold single recumbent;
• double recumbent.

You can see how the folding of the fold is done in the video:

The use of a single seam provides protection against leakage at a roof slope of more than 15˚. More flat roofs require the use of a double standing seam. When attaching gutters, valleys, grooves, the double fold method is also used.

The building materials market has self-locking seam roofing sheets. Installation is not required auxiliary tools and fixtures. When purchasing a ready-made profile flooring with locks, you can assemble a roof that is of high quality and durability.

The installation of self-locking sheets is shown in great detail in the video:

Seam roof installation

1. A cornice overhang is being set up.
2. Installation of a drainage system. At this stage, it is necessary to ensure the slope of the gutters for the flow of water into the funnels.
3. Pictures are laid out on roof slopes, strictly observing the vertical direction from the top to the bottom.
4. Connection of strips in the selected fold method. The paintings should protrude 6 cm in the region of the ridge to form a ridge ridge. Some strips are temporarily nailed at the top. The installation of metal blanks to the boards is carried out using special mounting brackets - clamps made of the same material as the sheets themselves. Movable brackets protect metal parts from possible deformations caused by temperature changes.
5. In places where metal adjoins wooden walls, additional sealing in the form of silicone sealant is required.

You can familiarize yourself with the technology of laying seam roofing by watching the video:

Advantages of seam roofs

This type of coating has significant advantages:

• reliable tightness;
• high thermal insulation characteristics;
• durability;
• no formation of rust spots and corrosion;
• the small mass of the roof creates a small load on the walls and foundation;
• smooth surface helps to accelerate the descent of snow cover.

Seam roof has more high price in comparison with roofs made of profiled flooring, but consumers prefer this type of roofing in the calculation of the transfer of housing to future generations.

Sergey Novozhilov - expert in roofing materials with 9 years of practical experience in the field of engineering solutions in construction.