Installation of seam roofing - choosing a covering. Seam roof - a well-forgotten old How to fasten flanged roofing sheets

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. Today we will talk about design features metal roofing and about the technology of its installation.

Compliance with certain rules regarding the arrangement of the roofing pie, the features of laying the roofing itself and the sequence of its installation will help to guarantee the protection of the seam roof from condensation, deformation and depressurization.

In this article we will consider the following questions:

• What elements does a seam roof pie consist of?
• How to arrange the eaves overhang of a standing seam roof.
• Sequence and technology of installation of seam panels.
• Arrangement of valleys and abutments of seam roofing.

If the construction of a house begins from the foundation, then the installation of a seam roof begins with the creation of a roofing pie that protects the attic space from condensation and cold. At the same time, the roofing pie serves as reliable protection against noise arising from precipitation.

Pavel T. User FORUMHOUSE

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

To ensure that the thermal insulation is of the required thickness, the insulation can be laid in several layers (between the rafters and under them).

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

Let's take a closer look at them.

Supporting lathing - 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 from the room to penetrate into the insulation.

Rafters – wooden beams section 200x50 mm. The distance between the rafters is 1.2...2 m.

Mineral wool is most often used as insulation. The insulation is laid between the rafters directly on 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 prevents under-roof condensation from penetrating into the insulation, but allows moist air to pass through, accumulating in the layer mineral wool. Waterproofing film is a diffusion (breathable) membrane that is sold in hardware stores.

berd80 User FORUMHOUSE

You can spread a diffusion membrane, you can use a special bulk membrane (but it costs a lot). There was no consensus on this issue.

The waterproofing spreads across the rafters in the direction from bottom to top (starting from the eaves strip, towards the ridge). The film is attached to the wooden rafters with staples (using a stapler). Separate strips of the waterproofing membrane are laid overlapping (the overlap width is at least 100 mm). On gable overhangs it is necessary to ensure the overhang of the film (overhang width is approximately 150 mm).

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

Under no circumstances should you use the same material as a vapor barrier and waterproofing. Moreover, you cannot swap them. All this will lead to the accumulation of moisture in the insulation or, conversely, in the room. The development of mold and subsequent destruction of building structures in this case are guaranteed.

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

A special sealing tape is placed under the counter beams, which ensures tightness at the nail joints and protects the insulation from moisture.

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

Arhios User FORUMHOUSE

A 50x50 block (counter-lattice) is nailed along the rafters, and on them (across) are 100x25 planks with spacing (lathing).

The counter-lattice provides ventilation of the under-roof space, which eliminates the condensation that forms there. In order for the counter-lattice to be guaranteed to fulfill its functions, the eaves overhang of a seam roof must be made according to the following scheme:

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

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

And also a ventilation mesh tape made of PVC, which is stretched between the sheathing and the front board of the eaves overhang.

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

The pitch of the sheathing deserves special attention - the distance through which the transverse strips are nailed. In accordance with the set of rules for the installation of metal seam roofing (SP 17.13330.2011), the distance between individual sheathing strips 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 areas 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 sheathing 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 roofing). For example, in accordance with technological requirements, continuous lathing in mandatory“creeps” under the zinc-titanium roof.

Continuous sheathing is a relative concept. Between each cross bar the sheathing must leave a small gap (no more than 10 mm), which will compensate thermal expansion wood.

More details can be found by visiting the corresponding FORUMHOUSE section.

Procurement of materials

If you decide to make folded pictures from rolled or sheet metal, then you cannot do without the use of sheet bending and folding machines. Purchasing such equipment for personal construction is impractical. But this does not mean that metal should be bent by hand.

vasilpolt User FORUMHOUSE

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 – “Painting rental”. Virtually every roofing company that has necessary equipment, offer it to their clients. Try searching in your area.

Also, using sheet bending equipment, you can produce the necessary additional elements. What kind of extras will be needed for construction - it depends on design features roofs.

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

Construction and installation of a curtain rod assembly

Installation of a seam roof begins with the installation of eaves overhangs. We immediately draw your attention to the fact that the eaves overhangs have various designs. It directly depends on the design of the drainage system. Gutter systems, in turn, can have suspended or wall-mounted gutters.

The eaves overhang with a hanging gutter does not have transverse folds, making the roof more airtight and easier to install. Considering that snow and ice can easily damage a suspended drain, roof surfaces with long slopes must be equipped with additional elements for snow retention.

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

Roofer1959 User FORUMHOUSE

Regarding gutters: if they are made correctly, then any are good. The wall-mounted one is more reliable in terms of rigidity, and I can vouch for its safety. But there is a weak point - the liner of paintings (especially if the fold is single). The suspended one does not have this disadvantage, but its rigidity under certain operating conditions can be called into question.

There is no consensus on which drainage system should be installed in conjunction with a seam roof. But no matter which option you personally like, the cornice assembly will have to be arranged according to the same principles.

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

The lower eaves profile – the “drip tray” (through which the condensate formed in the under-roof space will flow) – is mounted on the rafters and covered with a waterproofing membrane. This is done at the stage of arranging the roofing pie.

A thin layer of adhesive or roofing sealant should be applied between the waterproofing and drip line.

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

nekorsakov User FORUMHOUSE

The first step was to install a plastic mesh in the gap between the sheathing and the front board. Eaves strips were placed on top of the mesh, which were fastened to the sheathing with galvanized roofing nails, driving them in a checkerboard pattern. The planks were mounted along a cord stretched along the eaves, and the mesh was simply attached tightly along the edge.

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

If you plan to use suspended gutters as part of the roof, you need to think in advance about how to install eaves hooks for the drainage system. Thus, long curtain rod hooks, which are attached to the top sheathing, are inserted directly under the curtain rod. Under each hook it is necessary to make a recess in the surface of the sheathing. Otherwise, the seam paintings along the edge of the overhang will go in waves.

To give the eaves overhang additional rigidity, metal roofing spikes are installed under the eaves strip.

The crutches cut into the flooring flush with the surface of the sheathing (similar to drainage 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 you can easily make them yourself. For the manufacture of crutches, a steel strip of 40x4 mm is most often used. Blanks 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 of galvanized steel.

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

Crutches are used to strengthen eaves overhangs, as well as other roofing elements. Therefore, they can have different geometries, which depend on the intended purpose of the product.

Seam connections themselves are already stiffening ribs. Therefore, on roofs with suspended gutters, roofing spikes may not be used, but can be replaced with strips of galvanized or painted metal. They are installed along the overhang. Steel strips are placed on top of the cornice strip or placed under it, depending on the geometry of the cornice profile.

nekorsakov

Before installing the folded paintings, it was necessary to install additional strips of metal, reinforcing the rigidity of the overhang and forming a protrusion (50mm), for which the curved edges were then secured and crimped.

Seam roofs equipped with wall gutters and flat flashings must be reinforced with roofing studs.

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

Tools and accessories for mounting folded pictures

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

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

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

Crimping roofing frames – used for crimping L-shaped and double seams. Essentially, both frames are used to close a double seam, because the folding is carried out in two passes: the L-frame closes a single standing seam during the first pass, and the frame to close a double seam is used during the second pass.

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

Set of metal scissors with different cutting angles.

You cannot cut panels with a grinder or other abrasive tool! It's destroying protective coating material.

Installation of roof slopes using the example of a gable roof

Installation of roof slopes begins with the installation of the starting panel. The key difference between the starting panel and the ordinary panel is the special geometry of the profile, thanks to which you can attach the picture to the sheathing on both sides at once.

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

The clasps 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, which allow you to compensate for possible deformations from thermal expansion of the panels.

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

nekorsakov

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

Crimping of seam joints is carried out in a standard sequence. First, using a frame to close the horizontal lock, the first crimp is performed. A second crimp is then carried out using the double fold closure frame.

The finishing picture is cut to size (so that it does not protrude beyond the gable overhang), folded and secured with clamps to the sheathing. The gable overhang is subsequently covered with a special profile.

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

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

For example, during the installation of self-locking panels, instead of clamps, roofing screws are used, which are screwed into the nail strips of seam panels. The nail strips have oblong holes that help compensate for thermal deformation of the panels.

To attach clasps and self-locking panels to wooden sheathing, use roofing nails or galvanized self-tapping screws with a press washer (for wood) that have a flat head.

To prevent the self-locking roof from waving in hot weather, the screws must be screwed exactly into the middle of the oblong hole. In this case, after screwing the self-tapping screw completely, it should be unscrewed about a quarter of a turn (so that the panel can move slightly under the influence of thermal expansion).

Design of the roof in areas of eaves overhangs

The ridges of folded paintings located in places where eaves overhangs should be trimmed (literally by 2...3 cm).

After this, the remaining (protruding) part of the picture will easily bend under the eaves overhang, forming a reliable and airtight eaves overhang.

It is not necessary to completely remove the outermost part of the ridge. It can be folded, forming a neat decorative plug at the end of the fold.

Installation of side end strips

We present the installation diagram for the side gable profile.

1. The beam on which the wind strip is attached (the dimensions of the beam are selected based on the geometry of the wind profile).
2. Roofing screw “metal-wood”.
3. Side end strip.
4. Start/finish seam roofing panel.
5. Self-tapping screw with press washer.
6. Klyammer.

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, the ventilation grille and the supporting elements.

nekorsakov

I decided to place the lower (support) strips between the sheathing and the picture, without securing anything else. I mounted the upper planks on top of them (with some overlap). The support strip is ultimately held not by individual screws, but by an entire roofing sheet, fixed with clamps and pressed together with adjacent sheets. In this mounting option, the perforated wall of the support strip was pushed deep from the edge, which seemed to me both aesthetically and functionally better (away from the “aggressive” external environment with its precipitation).

Pipe bypass

Chimneys and ventilation shafts are protruding elements, the bypass of which when installing a seam roof requires certain skills in performing tin works. Let's consider a standard bypass option using a self-latching roof as an example. Any non-professional roofer can install it.

Pieces with locks are cut off from standard seam panels (indicated in red in the diagram). They are used to form abutment strips (side aprons), which on one side are adjacent to the pipe wall, and on the other, snap into place with adjacent panels. The space between the side aprons is closed with junction strips (top and bottom), which do not have a latch. On top bar a hook is made on which the picture is placed, approaching the chimney from above. The bottom bar with a hook rests on the bottom picture.

The junctions of the aprons with the pipe walls are sealed with roofing sealant.

Panels that are rolled with a double seam are mounted in the same way at the pipe bypass.

All four aprons, in this case, are connected to the adjacent paintings using recumbent and standing seams.

Valley device

Let us immediately pay attention to the requirements for arranging the base for the valley plank: the base here will be a solid wooden sheathing.

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

The owner of the sofa

Not best solution- make holes in the paintings (and at the same time in the valley) with self-tapping screws. It’s more correct to make a fold (fold) on the edge of the picture and place it on the corresponding fold of the valley. The result is a recumbent fold. The overlap size is approximately 30 millimeters. The endova, in turn, is attached with clamps to the sheathing.

These rules are relevant for folded pictures and profiles made from sheet or rolled products using sheet bending/folding equipment. When installing junctions on a “self-latching roof”, you should follow the instructions and recommendations of the roofing panel manufacturers.

Wall connections

The connection 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 in detail, as well as about the technological aspects associated with its installation, in the corresponding section of our portal. You can get information by reading an article based on recommendations FORUMHOUSE users. For those readers who want to see a visual master class on installing a seam roof, we have prepared a short thematic video.

CLASSICA and ELEGANT are attached directly to the sheathing with self-tapping screws through a fold that is hidden during installation; The panels are attached to each other using a self-latching fold. The presence of ribs increases the rigidity of the panel during installation and transportation and reduces the noise level from external influences during the operation of the roof.

PRAGMATIC is attached to the sheathing using "PRAGMATIC" clamps (Fig. 14), the panels are attached to each other using a self-locking fold. Roofing panels with an L-shaped seam are attached to the sheathing using “STANDART” clamps (Fig. 15); They are connected to each other with a double standing seam using hand or mechanized tools.

Seam panels are manufactured at the INSI Facade and Roofing Plant according to pre-declared lengths, which are determined as a result of careful measurements of the roof slopes (basic size: from eaves to ridge).

2. Accessories

3. Sheathing for seam roofing

Installation of seam roofing is carried out using sparse or continuous sheathing. To prevent sagging steel sheets It is very important during installation to observe the required design spacing of the sheathing. The following can be used as lathing: galvanized metal profile PSh-28 produced by JSC INSI, wooden beam 50x50, board 32x100, which are attached from the bottom up (from the eaves to the ridge). The durability of the roof largely depends on the correct arrangement of the sheathing, because even a slight deflection of the sheets weakens the density of its seams.

For self-locking seam panels, it is recommended to use metal sheathing. If used as a sheathing wooden boards or bars must follow the instructions in paragraph 7.3 of SP 17.133330.2011. ROOFINGS.

When using metal sheathing and discharged wooden sheathing, it is recommended to lay anti-condensation film on the rafters before installing it. In the case of using solid wooden sheathing or other solid bases (flooring), it is recommended to lay a special structural vapor diffusion film directly over the flooring. This film allows you to provide:

• device of a permanent ventilation duct to remove condensed moisture formed on inside metal roofing;
• preventing metal corrosion and wood rotting;
• reduction of noise from rain and hail.

In places where cornices, valleys, and abutments to protruding parts of the building are installed, a second sheathing profile is installed, which gives additional rigidity to the panels. In the area of ​​valleys, the pitch of the sheathing profiles is no more than 200 mm. In the area where the snow guards are installed, it is necessary to install two hat profiles one after the other.

For Standart seam panels with roof slopes of 3-20°, it is recommended to use wooden sheathing. Along the cornice, along the entire perimeter, it should be made in the form of a continuous boardwalk with a width of at least 700 mm. In valleys and valleys, the sheathing should be made in the form of a continuous boardwalk up to 700 mm wide on each slope. It is also recommended to use continuous sheathing for complex roof configurations. In the area of ​​​​the transverse joint of the seam panels, a board with a width of at least 120 mm should be laid. The joint of the panels is formed on it using a recumbent fold.

The sheathing under the roof must be smooth, without protrusions or depressions; the ridge and ribs should be straight; The bottom board of the eaves must be straight. Wooden sheathing is made from pine, spruce, fir and aspen. Wood moisture content should not be higher than 12%. To protect the wood of the roof sheathing from rotting and extend its service life, the wood is impregnated with antiseptics, coated or painted. The service life of wood increases if it is covered with drying oil in a dry state. The requirements for wooden sheathing and its installation are listed in SP 17.133330.2011. Lay a special structural vapor diffusion film over the sheathing.

In the design of an insulated roof, to ensure ventilation under the roof space, it is necessary to use a counter-lattice, under which a hydro-windproof membrane is attached, and only then the sheathing.

4. Installation of roofing from STANDART panels

Options for joining panels along the length, installing cornices, ridges, finishing chimneys, ventilation shafts for roofs made of Standart seam panels with various slopes It is recommended to take in accordance with SP 17.133330.2011. For minimum slopes of 3°-10°, it is necessary to seal the seam roof with Abris S-LB sealing tape. The maximum length of the slope, when fastening a seam roof with fixed clamps, should be no more than 6 meters. For longer lengths, it is necessary to use “sliding” clasps. The locations of “sliding” and fixed clamps along the length of the panel should be taken in accordance with SP 17.133330. 2011, Appendix C.

If an organized drainage system is provided from the roof, then before installing the roofing decking, it is necessary to secure the gutter holders. They are attached in increments of no more than 750 mm to the rafters or the bottom lath of the sheathing (see installation of the drainage system).

Then a cornice is attached along the lower edge of the slope. Fastening is carried out with self-drilling galvanized flat head screws (Fig. 16)

5.2 Installation of a seam roof valley

At the next stage, the valley elements are installed. During installation, only the lower valley is used. Fastening is carried out with self-drilling galvanized screws with a flat head, along the edge of the valley, closer to the bends. The junction of the valleys is carried out with an overlap of at least 200 mm, the upper elements must be placed on the lower elements. The edge of the valley of the seam roof is brought out onto the cornice (Fig. 17). Figure 18 shows an option for attaching panels to the valley. Seam roof sealant is applied at a distance of 100 mm from the inner bend of the valley. Seam sheets are laid on it and pulled to the valley with roofing screws painted in the color of the roof.

Before installing the seam panels with your own hands, it is necessary to carry out a control measurement of the slopes to establish flatness and perpendicularity in relation to the lines of the ridge and cornices. The diagonals of the rectangular slopes must be equal. Laying a seam roof can be done both from left to right and from right to left, strictly observing the direction: with the lower lock in the direction of subsequent installation. Therefore, when lifting the panels, it is necessary to rotate them taking into account the installation direction. For the installation of seam panels, 4.8x22 self-tapping screws with a press washer are used, and for component elements and in places where panels overlap along the length - 4.8x20 (for metal sheathing of a seam roof) or 4.8x35 mm (for wooden sheathing) with sealing gasket. The sheets are fastened to each line of the sheathing. Each subsequent panel is aligned along the slope, superimposed on the previous one, snapped into place and then attached to the sheathing. Along the cornice and ridge, secure the seam edge of the panel with 4.8x20 self-tapping screws (4.8x35 for wooden sheathing) painted with a sealing gasket, two self-tapping screws per fastening. (Fig. 19).

When making longitudinal joints, the sheets are mounted from bottom to top. If the length of the slope is more than 6 m, it is recommended to make it composite due to the inconvenience of transporting and installing the sheets. Seam roofing sheets are laid with an overlap along a length of 200 mm. Adjacent joints must be located at least 400 mm apart. Thus, a roof plane with a long slope usually consists of two standard sizes of panels “a” and “b”. In this case, the length of panels 1 and 2 differs by the amount of joint spacing (Fig. 20).

When installing a composite ramp, operations are performed in the following sequence (Fig. 21):

1) trim the lower part of the “lock” from the outside on panel 1 (Fig. 22); 2) fasten panel 1 to the sheathing with self-tapping screws; 3) place panel 2 on panel 1 with an overlap of at least 200 mm and secure it to the sheathing with self-tapping screws; 4) trim the lower part of the “lock” of panel 3 (similar to step 1); 5) make a locking connection between panel 3 and panels 1 and 2; 6) secure panel 3 with self-tapping screws to the sheathing; 7) panel 4 is superimposed on panel 3 with an overlap of 200 mm and connected into a “lock” with panels 2 and 3; 8) secure the panel 4 with self-tapping screws to the sheathing. Then repeat operations from points 1 to 8.

5.4 Pediment

Pediment-45 is attached in such a way as to cover the upper fold. The pediment is attached to the lower bend (Fig. 23). If a sheet was cut, it is necessary to bend the edge of this sheet upward by 20-25 mm (Fig. 23). The gable is fastened with roofing screws and a sealing gasket.

5.5 Skate

The ridge is installed on the upper edge of the slopes on the finished roofing decking. The upper part of folded pictures is folded upward by 25 mm. The ridge can be shaped (semicircular) or flat. When installing a cold roof with a slope of 25° or more, the ridge is fastened with roofing screws into the upper edge of the seam lock (Fig. 24).

5.6 Wall profile

Where the roof meets the wall, pipes and dormer windows a wall profile is installed. The profile is applied to the folded panels (the panels along the edge of the junction with the wall are folded upward by 25 mm) and attached to the wall (Fig. 25).

The brick rectangular pipes protruding from the roof are framed with a wall profile according to Fig. 27-32. The number of profiles is equal to the perimeter of the opening in the roof plane plus 2 meters.

step 1 - Installation of the lower pipe apron (Fig. 26)

First you need to prepare the junction of the lower apron to the side surfaces of the pipe. To do this, using the apron elements as a template, mark cutting lines on the pipe. Then, using a coal cutting machine (“grinder”), a groove is made in the brick walls of the pipe. Having cleared the groove and the surface of the sheathing from brick dust, they begin the installation of the elements of the lower apron, having previously trimmed each element and bent it along the slope of the roof. When installing the apron, the bent upper edge is inserted into the groove, the vertical wall is pressed tightly against the surface of the pipe, and in this position the element is fixed with roofing screws with a sealing gasket to the sheathing. The first element is mounted to the bottom edge of the pipe, then the two side ones and finally the element to the top edge. The overlap of the upper elements on the lower ones must be at least 150 mm. After fixing all the elements to the sheathing, the edge of the apron inserted into the groove is coated with silicone sealant. Attention! For better adhesion, the groove needs to be washed with water.

step 2 - Installation of the bottom sheet from the pipe to the cornice (Fig. 26)

At this stage, a flat (galvanized or painted) sheet is installed. The length of the sheet should correspond to the distance from the bottom edge of the pipe to the cornice or the nearest valley, the width should not be less than the width of the lower element of the apron (including side bends). Bring one edge of the sheet under the lower element of the apron, and bring the other out from above, onto the cornice or valley. After securing the flat sheet to the sheathing, make bends on its sides using hand tools.

step 3 - Laying seam panels (Fig. 27)

Place seam panels on the bottom and sides of the pipe, first bending it upward by 25 mm at the junction points.

step 4 - Installation of the wall profile along the bottom of the pipe (Fig. 28)

Install the wall profile to the bottom edge of the pipe, first adjusting it to the width of the pipe, according to the figure. Cut the protruding vertical parts from below and bend them onto the side edges of the pipe. The profile is attached to the pipe using dowels and must be treated with a sealant.

step 5 - Installing a seam roof on the side faces of the pipe (Fig. 29)

step 6 - Installation on the top edge of the pipe (Fig. 301)

Install the special wall profile on the top edge of the pipe. Cut the protruding vertical parts from below and bend them onto the side edges of the pipe, securing them with dowels.

Step 7 - Installing the seam panel on top of the pipe (Fig. 31)

Install the top rebate panel on top of the wall profiles and side rebate panels. Leave a gap of at least 100 mm between the bottom edge of the panel and the pipe. Treat the lower edge of the standing seam (50 mm) with sealant for seam roofing.

If you plan to sheathe the pipe with a profiled sheet, then after framing the pipe, a frame from a hat profile is mounted, a profiled sheet is attached to it, the corners are formed with an outer corner 50x50 (Fig. 33)

The chimney is attached to the pipe with dowels and nails before installing the corrugated sheet.

The number of drainpipes is determined from the standard - no more than 52 sq.m for a pipe with a diameter of 100 mm of roof area per one drainpipe. Typically, the number of downpipes is chosen for aesthetic reasons. Installing a drainage system on the north side of buildings should be avoided in order to prevent it from freezing in winter.

If there is a threat of freezing of the drainage system, you can use heating systems for gutters and pipes.

Gutter holders are mounted at a distance of 0.75 m from each other, pipe holders - no further than 3 m from each other (for example, 3 holders are needed for a 5 m long pipe, two are enough for a 3 m long pipe).

With a catchment area of ​​less than 30 sq.m per drainpipe, gutters can be installed with a zero slope, with larger area In the catchment area, the slope of the gutters can be up to 5%.

Step 1 - Installing Gutter Holders

Installation of the drainage system begins with the installation of gutter holders. Divide the total length of the gutter into equal sections, as noted earlier (but not more than 900 mm).

step 2 - Marking for the gutter holders

According to the result obtained, mark the installation locations of the gutter holders on the bottom sheathing.

step 3 - bending the gutter holders

Number the holders from the top mark to the drainage funnel. Having determined for yourself the desired slope (up to 5%), mark the bend point on each holder. In this case, the bending point of the holder should be 2.0 - 2.5 cm below the design position relative to the roof slope line (Fig. 36).

Step 4 - Attaching the gutter holders

Aligning the bend with the edge of the sheathing, attach the gutter holders with 4.8x22 self-drilling galvanized flat head screws, 3 each. for fastening. When using 50x50 beams as sheathing, a double beam must be installed to securely fasten the holders.

Step 5 - Creating a Slope

Adjust the two wall profiles to the dimensions of the side faces of the pipe. Installation of profiles is similar to installation of the lower profile. Attach the wall profile to the seam panels with sealant using roofing screws with sealing gasket.

step 6 - Installation of the pipe

In the gutter, at a distance of 150 mm from the bottom edge, cut a hole with a diameter of 100 mm for the pipe. Insert the pipe at the location of the hole (Fig. 38) Place the front edge of the pipe under the outer bend of the gutter. Bend the flange of the pipe onto the rear edge of the gutter and secure with two self-tapping screws 4.2x16 (Fig. 38).

Step 7 - Installing Gutter Covers

Install gutter plugs at the ends (Fig. 39).

Step 8 - Installing the Gutter

Insert the gutter into the holders, placing the rear edge of the gutter into the protrusion of the holder (Fig. 39).

Step 9 - Connecting the gutters

At the junction of the gutters, install the gutter connecting element (Fig. 40 and 41).

step 10 - Installation of the corner elbow

Use a corner elbow to create a transition to the wall of the building. The length of the connecting pipe is determined by location (Fig. 42).

step 11 - Pipe installation

The pipe is secured to the wall using pipe holders. The pipe is measured, if necessary extended at the installation site of the pipe holder, and secured with a lock (Fig. 43).

step 12 - Installation of the drain elbow

The drain elbow completes the drainpipe and serves to drain water from the foundation of the building; should be located at a distance of 300 mm from the blind area of ​​the building (Fig. 44).

7. Snow holder and seam roof fencing

For safe movement on the roof, roof railings are installed at the eaves level, starting from the second line of sheathing.

The fence is made depending on the slope of the roof and its type. The seam roof fencing is fastened to the sheathing profile through the seam panel and the rubber sealing gasket at the point where the wave deflects using self-drilling galvanized bolts 5.5x25 mm for metal sheathing and 5.5x60 mm for wooden sheathing. It is prohibited to attach a roof fence to one seam picture. The fencing sections are bolted together (Fig. 45).

To prevent large masses of snow from falling off, snow guards are installed. The design of the snow retainer consists of brackets and pipes. The brackets are installed in the deflection of the wave and are attached through the metal tile and rubber sealing gasket to the roof sheathing. At the installation sites for fastening the bracket, an additional sheathing profile is pre-installed at a distance of 120 mm. Snow guards are installed above the roof railing. In the absence of a roof fence, snow retainers are installed no lower than the third row of sheathing. When the length of the slope is more than 10 meters, it is recommended to install two rows of snow guards. In areas with a large amount of snowfall, it is necessary to install a bracket rod. The snow retainer rod is attached at one end to the bracket and the other to the sheathing profile through a sealing gasket and a sheet of metal tiles. Recommendations for selecting the number of brackets and the brand of fastening element, depending on the design of the seam roof and the snowy construction area, can be obtained from the program by specifying all the necessary parameters. It is prohibited to attach the snow retention bracket to one sheet.

8. Accessories

Weather vanes, decorative spiers, and chimneys are installed on the roof as accessories. Installation of all accessories is carried out in accordance with SNiP standards.

To install roof exits for antennas, masts and round ventilation pipes with a diameter of up to 330 mm (with an external surface temperature of up to 130)°, Master Flash roofing seals are used.

9. Processing of wooden structures

Wooden structures used for standing seam roofing require antiseptic and fire retardant (fireproof) treatment. Processing can be carried out both before the assembly of structures (processing of individual boards and bars) and after (processing of rafters and sheathing). Processing is carried out various methods(immersion in a container with a solution, brush application, spray application).

10. Tools for installing seam roofing

1. Screwdriver with 8 mm hex bit.
2. Electric nibbler or nibbler.
3. Manual roofing shears.
4. Mallets (wooden, rubber).
5. Hacksaw, jigsaw, hammer (used when constructing rafters and sheathing).
6. Angle grinder (“grinder”), hammer drill, drill, gun for pressing out sealant (used when installing a wall profile).
7. Level, level, plumb line, measuring tools and devices.

11. Attention

Cutting seam panels and components with cutting and angle grinders (“grinders”) is allowed only if the untreated areas are protected from flying sawdust and subsequent anti-corrosion painting of the cut areas.

The use of polyurethane foam as ridge or valley seals is strictly prohibited!

All products produced by the INSI facade and roofing plant are designed for use on pitched roofs in accordance with these installation instructions. The INSI plant is not responsible for damages or losses that may arise when using INSI products to perform functions that are not inherent to them.

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 purchasing a material, instructions for use are attached to it, and if not, then this article will help you understand all the difficulties.

Pros and cons of seam covering

Looking at the finished seam roof, you will immediately be able to notice its unusual appearance compared to other coverings. Essentially, the roofing plane is filled with ordinary flat sheets of metal, and with the help of a folding machine they are joined together. If you don't want to deal with a complicated device, you can purchase a self-latching product.

So, what are the advantages of this roof?

• The metal coating is highly durable and durable
• The low weight of the material allows the use of a lightweight rafter system
• Construction will be a cost-effective activity
• Low cost
• Wide choice of colors
• WITH smooth surface atmospheric precipitation is removed without problems

Despite such a number positive aspects, the coating in question has significant disadvantages, namely:

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

Nuances of the rebated surface design

It is immediately worth noting that metal sheets can be laid on roofs with a slope of about 14 degrees. Of course, there are also concessions under which the minimum threshold can drop to 7 degrees. If this is exactly the situation you have, then you need to create double folds instead of standard seams and lay the metal on a continuous sheathing. On flat roofs, all joints must be coated with sealants.

To create a warm and high-quality roof, you need to take care of the thermal insulation and waterproofing layer and, in addition, create a good natural ventilation. Some developers do not want to install additional layers of sound insulation 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 along the interfloor ceiling.

When installing roofing sheets, identical material must be used as fasteners, i.e. if the coating is made of galvanized steel, then the self-tapping screws should be made from this raw material. In addition, they must be equipped with a rubber lining to prevent the mounting points from leaking. If within several decades the roof begins to rattle when there is gusts of wind, then it is worth paying attention to these details.

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

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

Types of folded seams

To make the installation process easier, the metal sheets are collected into one large sheet on the ground. The resulting plate is called a picture. 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 the maximum indicators are observed with a double recumbent fold. This surface is practically monolithic and is suitable for installing flat roofs. Well, as you understand, the weakest on this list is considered to be a single standing seam. It is used on roofs with a slope of 15 degrees.

Seam coating can be created from the following metals:

• The most cost-effective product is galvanized steel sheet. It is very easy to install, and to protect the material, ordinary paint is used, 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 service life of a galvanized steel roof is 20 years without repair.
• Steel coated with polymer film. This roofing sheet can withstand prolonged exposure without problems. sun rays, and due to its bright structure it is a more attractive material.
• The most common metal is considered to be aluminum. The service life of such metal is about 80 years. This is very good indicator for a relatively inexpensive coating.

• Residents of a private house with 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. As a rule, copper roofs last up to 200 years, which is far beyond the operation of the building itself.
• If you don't need the most durable, but the most strong roof, then I draw your attention to an alloy of zinc and titanium. Sheets made of this material are resistant to corrosion and sudden temperature changes, 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 resident and the functional purpose of the building itself, for example, if the building is temporary, then it is better not to spend expensive products on it.

Installation of seam roofing

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

1. Preparatory work
2. Installation of cornice 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 quality product and get a good tool.

The following products are used for surface construction:

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

Seam roofing has unclear dimensions. It can be created to any length and width, but the best quality surface is obtained when the sheet of metal is completely covered by the slope. 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 in which all the smallest details will be taken into account; in addition, rolled metal has the least waste.

The roofer’s main tool 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:

• Scissors for cutting metal (alternatively, you can use electric scissors or a nibbler)
• Meter
• Regulators (level, plumb)
• Wood saw
• Drill with all attachments
• Kiyanka
• Gun with sealant
• Hammer
• Other

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

Assembly of the rafter system, installation of waterproofing and sheathing

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 counter-rails in advance (the cross-section must be at least 30x60 millimeters). As for their length, it must correspond to the width of the rolled membrane, which is 1.5 meters. As a rule, a sealant is placed under the counters, which acts as a sealant and blocks the access of moisture through the holes left as a result of fastening.

IMPORTANT: All wooden elements that are used in the rafter system must be treated with special solutions. Antiseptics and fire retardants will reliably protect lumber from rotting and fire.

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

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

Installation of roofing strips

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 yet purchased this element, you can create a temporary alternative. To do this, a corner strip is placed on the overhang, and on top of it, with an overlap of 2 centimeters, a sheet of metal is attached, which will serve as a moisture collector.

After working with water drainage, you can begin to create a base for the wind slats. Ordinary beams with a cross section of 30x50 millimeters will do for this.

Assembling the paintings and attaching them to the slope

Laying metal sheets using the seam method can be carried out in only two ways:

1. Traditional method. The paintings are assembled on the ground and, after being lifted, secured to the slope. The symmetrical arrangement allows you to create a beautiful appearance the roof as a whole. The entire process of the device can be described in a few words. The paintings are lifted onto the roof slope, laid out in the required order and connected using a single or double 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 to construct the flooring. Before laying, it is cut into the required patterns, maintaining the required length and creating bends for future seams. As a rule, a double fold is created on such metal, followed by treatment with a sealant.

If you are going to do everything yourself, then the most suitable option will be the purchase 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:

• Roofing work should not be carried out in windy weather.
• All material must be delivered one piece at a time on the roof
• The work must involve 3 people. Two of which will serve and one will receive
• For large product weights, use long logs

After the material is delivered to the surface, you can begin installing the roofing.

The whole process begins with the so-called starting picture. It is attached to the wind strip using self-tapping screws so that a protrusion is formed. Experienced roofers advise not to tighten the screw all the way and leave a turn somewhere. This will prevent the metal sheet from deforming during the heating process. When using material without self-latching mechanisms, fastening to the sheathing is done using clamps.

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

If you have any questions, watch how to install a seam roof in this video:

Installation of additional elements

The work on installing the roof is completed with the installation of additional elements, namely: the ridge, protective aprons, valleys and other less important elements.

Since the roof is metal, it is necessary to take care of high-quality ventilation. As a rule, most developers use ventilated ridges and this is the most rational thing to do. Often on metal roofs in the attic the air is very humidified, therefore, the metal will very soon begin to corrode. In order to remove moistened vapors, this element is mounted.

The ridge is placed exactly on the parts of the paintings that are bent upwards, and if they are absent on the slope, then the fastening occurs 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 to match the architectural design. It is produced semicircular, triangular and flat.

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

Repair work on seam roofing

Any responsible owner of a private home knows that annual preventive inspections of the roofing surface are an integral part of living. Their minimum number is 2 times, one of which occurs in 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, deficiencies that may cause leaks should be identified.

It is worth noting that in most cases the reasons are minor and may require replacing the sealant or fastening elements of the paintings, but if you ignore annual preventive inspections, you may have to replace several paintings.

As you already know, aluminum and galvanized surfaces are attractive to developers. The fact is that they are the easiest to repair. To seal the problem area, you can use a patch device. By the way, if you are going to do this, then after finishing the process do not forget to protect the seams you just created.

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 problem area 10 centimeters on each side. Next, we apply it to the base and secure it with self-tapping screws. After this, special roofing glue is poured into the seams. The procedure for filling the seams is repeated several times throughout the day.

The most common causes of leaks are:

• Large pitch of sheathing elements, which causes sagging of sheets
• Over time, the rafter system changed its geometry and subjected the metal sheets to deformation
• Violation of seam tightness
• The metal coating has begun to corrode or is mechanically damaged

In no case should leaks be ignored, as this will lead to rotting of the rafter system, therefore, the entire roof will have to be repaired, or rather, rebuilt.

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

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

Seam roofing is usually understood as roof covering, which is made from sheet metal and is connected to each other using latches in the form of gutters. IN this material we will talk about how to make a seam roof and what materials are used for this.

The concept of “seam roofing”

The method of joining sheet metal to cover roofs, invented by the Germans, has been popular in our country for a long time. And if quite recently the folds were connected manually, now it is possible large number mechanical and electrical tools for seaming them. So making a seam roof has become much more convenient and accessible for non-professionals.

Among the advantages of this coating are:

• Low weight, allowing you to do without a reinforced rafter frame.
• Tightness, reliable protection against leaks. Due to the absence of through holes, the metal does not corrode for a very long time.
• Subject to availability necessary tools You can assemble a seam roof yourself.
• The design is equally suitable for simple roofs with a slight slope, and on roofs of complex configuration.
• The material goes well with all types of building materials.
• The service life of such a roof is more than 20 years. Since all joints are reliably sealed and the seams are hidden, water does not leak under it, and snow rolls off the roof surface freely.

Cons

To be fair, it is worth pointing out the disadvantages of a seam roof, which arise mainly as a result of incorrect installation:

• Since the covering is metal, rain falling on a seam roof creates quite a lot of noise. To avoid this effect, it is recommended to use perfectly even bars for the sheathing, to which the metal sheets will fit tightly.
• The seams on the roof must be periodically checked and, if necessary, repaired.
• If snow retention devices were not provided during the installation of the roof, the snow will fall off it very quickly and intensively.
• Seam roofing is not available in a wide variety of colors and textures. However this best option for those who are adherents of minimalism and do not seek to stand out.

Design elements

First of all, it’s worth defining some terms.

So, roofing pictures are called rectangular sheets of metal with seams. Such sheets are assembled into a seam roof.

The term “rebate” is usually understood as a kind of seam that is formed as a result of joining individual sheets of material. Such a connection does not require additional sealing with glue or sealants. In addition, such seams serve as stiffeners.

Clamps are special fasteners that are fixed to the base of the roof. They can be simple, that is, repeating the shape of the fold, and also movable - they compensate for the thermal expansion of the metal.

Types of materials for paintings

There are various types of seam roofing available on the market, which have significant differences. In most cases, modern seam roofing is made from materials such as:

• Steel. There are products that are not galvanized, zinc coated, or with an additional polymer layer. Such materials are characterized by durability, resistance to oxidation and low price. However, during operation, such a roof gradually loses its shine, so in order to maintain a presentable appearance, it is worth choosing materials with a colored coating. In addition, it is important to ensure that the products are covered with a film to protect them from scratches and damage.
• Copper. What material is used to make very beautiful roofs that literally shine under the sun? Moss or any other plants do not grow on it. Since copper paintings are quite flexible, they can be used to make roofs of any configuration, from simple to the most complex.

However, this material is quite soft, so it should be handled very carefully. In addition, the cost of copper is quite high.

After some time, a layer of oxides forms on the copper, creating a dark brown film. For this reason, copper roofing cannot be combined with any other material.

• Zinc. Zinc paintings are additionally coated with another protective layer from zinc carbonate. During operation, this coating becomes silver-gray. However, the service life of such a seam roof is not very long (up to 50 years), so in European countries such materials are practically not used.
• Aluminum. This metal is resistant to oxidation, so a seam roof made of aluminum usually lasts about 100 years. In addition, it has a very beautiful silver color. However, when installing a seam roof made of aluminum, it is worth remembering that it is very susceptible to thermal expansion.
• Zinc-titanium. Original solution connecting 2 metals together made it possible to obtain a material that is reliable, ductile, and resistant to oxidation. Over time, the alloy develops a layer of patina, which is highly valued by modern designers.
• Aluminum zinc. An alloy of zinc and aluminum, which covers steel paintings, protects the material from corrosion in places of mechanical damage, and is also characterized by the ability to self-heal.
• Copper, zinc and titanium alloy. The additional inclusion of copper in a concentration of 0.005% makes it possible to achieve the plasticity of the material, which is so necessary for its profiling.

Coverage type

In order to protect the roof from the harmful effects of the environment, a special protective coating is applied to it. In particular, for regions with very hot and humid climates, where acid rain is frequent and the intensity of ultraviolet radiation is high, folded paintings coated with pural are optimal.

How is seam roofing made?

Pictures for seam roofing can be in the form of individual sheets (cast) or rolls. In our country, it is the cast construction that has gained the greatest popularity. Such sheets are very convenient to connect even without special tools, and the result is a seamless, seamless coating.

As for rolled seam roofs, they appeared quite recently. This material is a strip equal to the length of the slope, which already has prepared edges. When connected, a double lock of a seam roof is obtained.

There are several designs of paintings for standing seam roofing:

1. With two stiffening ribs and double rebate. It is used primarily for industrial construction, for covering warehouse buildings and workshops with various roof slopes. The standard width is 5.57 m, of which the usable area is 5.45 m.
2. For residential construction, paintings with a double seam and two stiffeners are also used, but their total width is 3.52 m, and their working width is 3.4 m.
3. There are paintings with double folds, but without stiffeners. They vary in width - 5.57 m and 3.52 m. They are used in housing construction.

In addition, there are starting, row, parallel and trapezoidal folded panels.

Famous manufacturers

The most reputable manufacturer of seam roofs is the Finnish company Ruukki. In Russia, the Insi plant produces such material. Their products are more affordable, and they offer a fairly wide range of products.

Method of laying a seam roof

The technology for installing a roof made of seam panels includes several successive stages.

How to make a roof base

Seam paintings can be mounted on a solid or open sheathing. For it you can use wooden slats or metal profiles. It is noteworthy that the distance between the rafters should not exceed 2.5 meters so that the sheets do not sag during operation and the folds do not separate.

Stacking pictures

The selected material, be it cast panels or rolled steel, must be raised to a height, placed on top of the sheathing along the eaves and fixation must begin from the center.

Manufacturing of auxiliary elements

For arranging conic, cornices, valleys, as well as joints with chimney or window opening, special additional elements will be required. They must either be purchased ready-made, or made from rolled steel yourself.

Making folds

The folds can be single, double, lying (horizontal) or standing (vertical).

Double folding means double folding of the edges. Such a connection is advisable in places where snow and rain accumulate - in valleys, valleys, joints and other structural elements. This seam is considered the most reliable.

Recessed seams are made if it is necessary to mask the seams between individual panels. In addition, the horizontal connection is also made using lying folds, with maximum girth. Please note that if the grip of the steel strip cannot reach the depth of the rebate, the seam will weaken over time.

On roofs with a slope of more than 25º, an angular standing seam or an L-shaped one is used. Making such an element is even easier than a regular one - you just need to correctly bend the top edge of the seam.

As for the height of the seam, it should be such that standing melt water does not penetrate into the joint. Rainfall is not a problem for folds, but standing snow can cause considerable harm. Consequently, in regions with a large amount of snow precipitation, the folds are made quite high. In addition, when laying the paintings, sealing gaskets are placed in the folds. These elements withstand the thermal expansion of the metal and the forces during seam rolling.

It is also worth paying attention to the fastening elements - you can only use components with an anti-corrosion coating, otherwise rusty spots will soon form on the roof.

A hammer is used to connect the fingers and wooden blocks, as well as manual or electromechanical machines. First, the picture is attached to the base with a narrow strip, fixing its position. Then the recumbent fold is folded in front and behind, and vertical half-folds are folded on the right and left.

Fastening the folds is carried out mainly with clamps. They are put on by 2.5 cm, after which the panels are nailed on the right side. The clamp is made of galvanized steel with a thickness of 0.5-0.7 mm and a length of 80-120 cm. These elements are placed along the edges of the panels in increments of 60 cm and screwed with 4.8 × 28 mm self-tapping screws.

Therefore, the installation looks like this:

• the panel is placed on the sheathing;
• fix it with clamps;
• cover with another panel on top;
• then three layers of metal are bent in one direction, the folds are folded until they stop and pressed.

Thus, it is achieved reliable connection, protecting against cold and water leakage.

Final stage

On finishing stage it is necessary to bend the notches and install additional elements - valleys, aprons, pediments, cornices and rebated strips.

The difference between professional and amateur editing

With certain skills and experience, an amateur can install simple roof structural elements using scissors, a mallet and a pipe bender. At the same time, professional builders have a number of special tools in their arsenal - scissors, frames, pliers and other devices. Often such tools are much more expensive than a folding machine.

It is worth noting that semi-automatic tools are currently used for bending folds, which have a number of advantages:

• ensure connection reliability;
• the work is done very quickly;
• it is possible to operate with material of any thickness;
• The polymer protective layer is not damaged during operation.

Currently, panels are available on the building materials market in which the folds are equipped with special locks. That is, a simple click is enough to connect.

During the construction of private houses and cottages, in lately Seam roofing has increasingly begun to be used as the most optimal roof option for any one- and two-story building, observing the points of SNIP ( building codes and rules for conducting construction work).

Folding is a specific technology for laying metal sheets on the roof, the nodes of which are connected in a special way using a machine (the details can be seen in the photo below).

What is she like?

Seam roofing is also used in the construction of private residential buildings, primarily due to the availability and durability of the material.

The technology of seam roofing originated in Germany, and it was from there that this definition came to us (from the verb “falzen”, which means “to bend” in German).

Also, in addition to the method itself, a special tool for standing seam roofing and a machine were developed, ensuring high-quality work, because bending metal with bare hands, creating, for example, a dome, will not work.

Nowadays, buying a high-quality device to make a seam roofing pie is not difficult at all; a huge variety of equipment is present in the domestic and foreign construction equipment markets, and instructions in understandable language complement such a device.

The seaming and repair of a seam roof itself, although they sound complicated, generally do not require specialized skills and abilities, a little practice, and even a person who is not knowledgeable in the construction business will be able to perform this procedure efficiently or make a dome as in the photo below. The main thing is to comply with the points of SNIP.

You can verify the quality of the work over time, if the sheets are fastened securely and in compliance with SNIP, moisture will not penetrate into the home.

You can install a seam roof or create a dome either on the construction site using a machine or directly on the roof itself.

Classification of seam seams and types of materials used

There are several types of seam seams: lying, standing, double and single. The installation technology largely depends on the type of seam.

Standing seams connect the side edges of the steel strips running along the slope.

The folds are made using a special electromechanical seaming device shown in the photo.

The most optimal and reliable type of seam seam is a double standing seam - in this case, the tightness will be maximum, which will not allow even a drop of moisture to leak out.

When creating a seam roofing covering using a machine, several components can be used.

Non-ferrous metals, namely copper, aluminum or zinc-titanium alloy. Over time, the red color of the roof turns into brown, and then into matte black.

A seam copper roof can be covered with a protective layer of patina; this technology will extend the life of the roof and protect the original color, and protect our solid dome from damage and corrosion.

In other words, a layer of patina has turned the copper roof in the photo below into an almost invulnerable material.
Because of this feature, copper is the most popular among roofing materials.

In practice, there are cases where a copper seam roof, protected by a patina (a special machine was used during installation), has served for more than a hundred years.

In addition to its long service life, a copper metal roof is popular for the following reasons:

• The seam surface will absolutely not need operating costs. After the work is completed, there is no need to paint or clean the surface using expensive devices and construction equipment; the roofing cake will be protected from exposure to adverse weather conditions;
• Copper is harmless to the human body, the material does not emit harmful substances;
• Thanks to the high ductility of copper, repairing a seam roof is quick and easy; the metal can be melted.

Along with copper, folding is done using polymer materials, while observing SNIP (shown in the photo below).

The seam surface consists of several layers: steel, zinc, primer, a layer of paint and the polymer itself.

This combination of layers was selected using many years of experience and practice, all components perform their specific functions, repairing a seam roof, the instructions for which are available to everyone, is quite simple.

It should be remembered that not all polymer coatings have the same properties, according to SNIP.

Each material has its own indicator of the impact of ultraviolet light on the coating, its tensile strength at different temperatures.

Next in popularity is profiled coating.

Using a machine, giving metal sheets a wavy shape is determined by decorative purposes, making the coating look beautiful (you can see an example in the photo below).

Such sheets can be produced using polymer products, but they are not always included in the composition.

The technology of polymer profiled coating will allow you to create the following roof shapes:

• Trapezoidal seam roof;
• Regular, rounded metal roof;
• Sinus-shaped seam roof.

Corrugated sheets differ in the width of the finished profile, the conditions of use, and the shape and height of the corrugation.

This type of roofing pie can be suitable both for large production and offices, and for arranging private housing; you can even create a dome for an urban building in compliance with the requirements of SNIP.

Among non-standard shaped buildings (an example is a dome), builders most often use aluminum.

This element has a flexible base and excellent resistance to weather conditions and corrosion, which is important for urban buildings.

If the required amount of this flexible metal is available, construction organizations can repair the seam roof and install it using a machine; depending on the requirements, you can make, for example, a dome. Also, the roofing pie can take any other shape (the most common ones are shown in the photo below).

Also, using folding technology, you can achieve different reliefs.

Aluminum performs equally well in any form; even decorative figures will look neat and elegant if all the work is done by qualified professionals.

The aluminum seam coating itself forms a special protective film, protecting the material from environmental influences.

In this case, special attention should be paid to free access of air to the material.

In addition to good corrosion protection, aluminum does not transmit ultraviolet radiation and does not burn. A high-quality DIY aluminum seam roof will last for several decades!

The video below shows the installation of a seam roof.

Recently, the technology of seam coating using clamps has become in demand.

A clamp is a special curved device with which a sheet of steel is attached to the sheathing.

The convenience of the clamp is that it is attached to the sheets with ordinary self-tapping screws, which compensates for the lack of special holes in the roofing material.

How to properly lay a seam roof?

The list of works is as follows:

• To begin with, a rafter system is installed in compliance with the requirements of SNIP. The system elements are treated with an anti-ignition agent, as well as an antiseptic. On at this stage the areas of greatest and least load planned in the future are calculated;
• A soundproofing and waterproofing membrane is installed;
• It is necessary to create a system of easy access of oxygen to the layers of the folded surface. For this purpose, special holes are created in the cornice and ridge;
• The sheathing is laid under the seam roof, which will subsequently provide a ventilated space;
• The comb is installed;
• Sheets of metal are laid overlapping, and a self-latching seam roof is installed. In this case, the sheets are joined on the roof itself, using a special device;
• Aprons consisting of material identical to the rest of the coating are installed in open areas.

It should be remembered that seam roofing can be installed if the roof slope is at least 7 degrees, in accordance with the requirements of SNIP.

If the degree is even lower, then the material can be deformed, and leaks form at the junction of metal sheets.

When cutting part of the coating, the corners of the cut must be coated with a substance that protects against corrosion.