Seam roof lock. Installation instructions for seam roofing

LLC "RSK 24" performs roofing work for private, administrative and industrial buildings in Moscow. You can order installation of seam roofing from us at affordable prices in the region.

The company has been providing roof construction and repair services for more than 10 years. We provide a guarantee for the entire range of work.

Seam roofing is a metal flooring in which individual elements (pictures) are connected using seams. The material is made from rolled or sheet steel with galvanized and polymer coating, as well as from aluminum and copper.

Structurally, the roof consists of the following elements:

• picture - a sheet of steel or non-ferrous metal, the edges of which are prepared for folding;
• fold - a way to connect pictures. There are several types of seams - recumbent, double, single, standing, self-latching.

The main advantages of a seam roof include low weight of the structure, reliable protection against leakage, ease of repair and operation, and durability.

Materials used for installation of seam roofing

• Cink Steel. For work, material with a thickness of 45–79 mm is used. Service life - 25–30 years.
• Galvanized steel with polymer coating. The roof surface is more resistant to corrosion and has a more attractive appearance. Service life is about 30 years.
• Copper in rolls. A fairly durable coating that retains its properties for 100 years.
• Aluminum. The material retains its characteristics for a long time and can last more than 80 years.
• Zinc-titanium. An expensive material, characterized by the complexity of installing a seam roof. He has an attractive appearance and long service life.

Estimated cost per m² and linear meter:

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Preparatory work for installation of seam roofing

To lay the rebate covering you will need the following tools and Consumables: wire, nails, clamps, bolts, plumbing and wooden hammers, measuring instruments, metal scissors. If you plan to install a roll-type seam roof, then special machines are needed.

Before installing the flooring, you should preparatory work. First of all, you need to install the sheathing. In cases where the roof has many angles, it is better to make the sheathing continuous. When preparing for the installation of a seam roof with self-latching joints, it is recommended to make the sheathing not from wooden blocks, but from metal.

The distance between the beams should not exceed 25 cm. Otherwise, dents will form on the roof. The roof angle must be at least 140 degrees. If it is less, then a continuous sheathing should be made to avoid deformation of the flooring when ice forms.

Sequence of work when installing a seam roof

The roofing technology includes two main stages.

1. Preparing paintings. Before starting work, it is necessary to cut the blanks according to existing measurements. After this they are marked flange connections adjacent sheets and bend the edges up. Holes are also cut for chimney pipes and other roof elements. All work with sheets is carried out directly on the construction site.
2. Installation of seam roofing. The paintings are lifted to the roof of the building, laid and connected to a flange. After this, they are attached to the sheathing using clamps, while one end of the fastening is hammered in and the other is hidden under the seam. Holes for structural elements the roofs are covered with galvanized aprons. When carrying out this work, it is necessary to align the sheets mechanically using a wooden hammer and a block.

Seam roof installation technology

The work uses both traditional and modern technology for installing a seam roof.

Stages of installing a roof using traditional technology:

• production of paintings and roofing elements for subsequent assembly. At this stage, the drawing, cutting of blanks and preparing their edges for joining using the seam method are carried out;
• lifting paintings onto the roof and connecting them using folds;
• attaching paintings to the sheathing using clamps;
• installation of additional roofing elements.

Modern technology for installing seam roofing involves the use of material in rolls. Paintings in in this case are cut to the full length of the slope, so there is no need to make horizontal connections. This has a positive effect on the tightness of the roof. You can also use silicone sealant for additional protection against leaks.

Advantages of modern technology for installing seam roofing:

• production of paintings of any length;
• the use of a mobile rolling mill, which provides the most durable and tight connection;
• minimizing the total number of connecting elements when attaching paintings to the sheathing.

Installation of a seam roof is a rather labor-intensive process that requires special knowledge and experience. To install a seam roof covering quickly, efficiently and inexpensively, contact construction company"RSK 24".

The price for installing a seam roof is 240 rubles per square meter.

The total cost of installing a roof is determined by the volume of work and the complexity of the design, as well as the type of connection of metal sheets (pictures).

If the correct approach was taken to elaborating all the elements, then the house will turn out warm and visually attractive. Even the latest technologies and new materials will not bring positive results if the roof is of poor quality. This means that the roof must be done with special attention, entrusting the work to experienced professionals. Seam roofing has gained great popularity because it has a number of positive features, in particular, a long period of operation.

Features of seam roofing and installation

Seam roofing is so called because of the installation features. Fastening occurs using folds that fasten the roof to the base of the roof.

This type has many advantages, for example, its light weight, due to which there is no need to further strengthen the roof structure. In addition, there are also such advantages:

• perfectly protects against moisture, as it is well sealed;
• made from different metals: titanium, aluminum, copper, you can choose the appropriate one;
• mounted differently depending on the situation;
• the service life is quite long;
• suitable for different forms roofs.

The disadvantages include the excessive smoothness of the coating, which makes it dangerous to use in cold weather. Snow falling from the roof can cause harm to people and surrounding objects, so it is necessary to install snow guards.

Examples of our work

Installation of seam roofing

The preparatory stage also includes the installation of the sheathing. It is better to make the roof solid, this will not allow sagging to form. However, the use of lathing is also possible, only the steps between the boards should be minimal. The use of a solid roof option is required when there are many angles and shapes in the roof.

Laying is done in two stages. First, prepare the sheets, cut them according the right sizes, for such work it is used construction site. After this, mark the places where the flange will be fixed. With help wooden hammer the edges are folded, and markings are made for the chimney pipes.

The next step will be installing the roof. Using a rope or other device, the sheets are lifted onto the roof. Next, using clamps, they are attached to the sheathing. One side of the sheet is inserted into the flange, and the other is nailed.

Using galvanized metal aprons, edge the holes that were cut for different pipes. The main thing is to carry out correct installation the first sheet, which will become a guide for all subsequent ones.

Order installation of seam roofing

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Pay attention to.

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 roof operation.

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 of steel sheets, it is very important to observe the required design spacing of the sheathing during installation. The following can be used as sheathing: a galvanized metal profile PSH-28 produced by JSC INSI, a wooden beam 50x50, a 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:

• permanent device 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 with a complex roof configuration. 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 roof space, it is necessary to use a counter-lattice, under which a hydro-windproof membrane is attached, and only then the lathing.

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 at different slopes are recommended to be adopted 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. Maximum length 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 using 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 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 a 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 bottom part"lock" with 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 steps 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 deck. The upper part of folded pictures is folded upward by 25 mm. The ridge can be shaped (semicircular) or flat. During installation 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 at 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 silicone sealant. Attention! For better adhesion, the groove needs to be washed with water.

step 2 - Installation bottom sheet from pipe to 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 flat sheet Make bends to the sheathing 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 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, for a pipe 5 m long, 3 holders are needed, for a pipe 3 m long, two are enough).

With a catchment area of ​​less than 30 sq.m per drainpipe, gutters can be installed with a zero slope; with a larger 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. Total length divide the gutters 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 drainage funnel. Having determined for yourself the desired slope (up to 5%), mark the bending 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 120mm. 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, brand fastening element depending on the design of the seam roof and the snow-covered area of ​​construction, you can obtain it 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. All accessories are installed in accordance with SNiP standards.

For arranging exits from the roof of antennas, masts and ventilation pipes round section 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.

Use as ridge or valley seals polyurethane foam is strictly prohibited!

All products produced by the INSI facade and roofing plant are designed for use on pitched roofs according to 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.

As roofing It is very convenient to use metal - it is durable, non-flammable, highly resistant to atmospheric conditions, and in addition, it provides the maximum possible strength of the roof structure with its relative lightness in all its diversity. Among the materials used for waterproofing roofs are galvanized steel and copper, aluminum and steel profiles, both in the form and in combination with composites, imitating. In this article we will look at how to install a seam roof made of galvanized steel.

Installation of seam roofing. Cost of work

What is a seam roof made of?

Seam roofing gets its name from a special method of fastening metal sheets of roofing material to each other. A special joint system guarantees absolute tightness without using rubber seals, glue seams, and most importantly - through holes, which will cause leaks. In addition, the stiffening ribs obtained during the folding process give the roof additional strength and expressiveness. It is used on roofs with a slope of at least 30%.

Galvanized roofing steel , one of the most popular roofing coatings, differs from conventional cold-rolled steel by the presence of a thin anti-corrosion coating, a layer of zinc about 0.2 mm thick, which significantly increases the service life of the material.

Main parameters of galvanized roofing steel:

• length up to 2.5 m;
• width - 0.8 -1.25 m;
• thickness - 0.5 - 1 mm.

The best option for obtaining high-quality galvanized steel is considered to be the use of steel sheets grade ST 08PS, where the abbreviation PS means semi-quiet steel (a metallurgical term meaning steel containing a certain percentage of ferrous oxide, which causes the release of gases, without “boiling”, from the steel when it hardens after casting).

The hot-rolled billet used to produce galvanized sheets is pickled with acid to remove scale from its surface and cold-rolled to the required thickness. To give the workpiece the necessary strength characteristics, it is fired on a special bed.

Then the metal is immersed in baths with a zinc-based melt, the composition of which determines the main property of the future galvanized sheet - high stability to the destructive effects of corrosion.

For galvanizing, zinc grades TsO and Ts1 (sometimes Ts2) are used. Their use is dictated by GOST requirements.

What to look for when choosing a material for a seam roof?

The correct choice of material is the main requirement, observing which you can perform high-quality installation of a seam roof made of galvanized steel. The presence of defects in the material can lead to a significant reduction in the service life of the roofing covering. Therefore, when purchasing material you should pay attention to:

• presence/absence of cracking on the rolled surface;
• the zinc coating must be clean and uniform;
• the sheet of metal must have no “torn” edges;
• The continuous zinc coating should not be disturbed by sagging, dark spots, various grains, uneven crystallization of zinc, various types of roughness and scratches and other defects of this kind.

The minimum thickness of the material for installing roofing sheets should be 0.5 mm, for installing overhangs and slopes - at least 0.7 mm.

Pictures and folds

Seam roofing with a continuous covering covers the entire length of the roof slope, where individual sheets are joined into “pictures” with a seam lock, and the latter, in turn, are connected to each other. What do expressions such as “picture” and “fold” mean?

Painting – a sheet of roofing steel, the edges of which are prepared for seam joints.

fold - a type of seam formed when joining sheets of metal roofing material. Rebates are divided by shape into standing and recumbent, and by density - into single and double. Lying seams are used to horizontally connect roofing sheets located along the drainage of water from the roof. Standing - for fastening vertical (side) strips of roofing material, fastening pictures on ridges and ribs.

For slopes less than 60% of the roof, the lying seams in sheet steel roofs are made double and sealed with sealant. The bending value of the paintings for the installation of lying folds is 15 mm, standing folds - 20 mm for one and 35 mm for another adjacent painting.

In valleys, the folds of one slope should be at the same levels as the folds of the second slope

The folds are made (rolled) manually with a special tool or more in a modern way- electromechanical seaming devices. Self-locking seams hermetically connect roofing sheets without the use of tools. But the double standing seam is considered the most reliable.

Modern equipment for rolling seams allows you to make pictures of any shape: conical, radius and others, so the installation of seam roofing can be carried out on roofs of different configurations. In this case, the seam can have a thickness of 5 mm and a height of 30-70 mm, depending on the slope of the roof.

Installation of seam roofing. Step by step instructions

Installation of a seam roof made of galvanized steel begins with the creation of a strong and even frame. It is made in the form of a lathing made of wooden beams dimensions 50x50 mm with a pitch of no more than 200 mm and boards with a width of 120-140 and a thickness of 50 mm, laid every four bars with a pitch of 1390 mm (in places where the lying seams of joined paintings are laid). In this case, valleys, valleys and eaves overhangs are covered with continuous plank flooring.

At the same time, paintings are being prepared. Seams are folded along the edges of the roofing sheets. Roofing sheets can be pre-connected to each other along the short side using a standing seam. The folds are bent towards the roof slope. In this case, the picture will consist of several roofing sheets. Steel sheets are cut with scissors or a guillotine, but in no case with a grinder.

If covered low roofs, then the blank picture can be made for the entire length of the slope.

The next stage, continuing the installation of the seam roof, is the installation of pictures of eaves overhangs. Then the wall gutters are installed and the gutters are covered. And only after this, the pictures of the ordinary covering are lifted onto the roof and laid on the sheathing, securely joining each other, first along the short sides with a lying seam, and then along the long sides with a standing seam.

Installation of a seam roof does not involve fastening through a sheet of metal, so the roof is obtained without technological holes. The paintings are secured to the sheathing with clamps - strips of roofing steel 50 mm wide and 150 mm long, one end of which is inserted into the rebate, and the other is nailed to the sheathing bars. This is convenient if the width of the sheets from which the picture is assembled is 50-60 cm. The most common size of a galvanized sheet is 1 x 2 m, so it is cut lengthwise into two equal strips measuring 0.5 x 2 m. The fastening step of the clamps is 0.5 - 0.7 m.

On overhangs, the roofing elements are attached to T-shaped crutches, nailed to the boardwalk in increments of no more than 70 cm and extending beyond the edge of the boardwalk by 12 cm. The paintings are laid on the crutches from the axes of the funnels to the watershed, connecting the joint along the watershed with a double rebated seam .

Drainpipes are hung on the walls of buildings using mobile scaffolding or mechanical towers after the roofing work is completed. They are attached to the walls using pins and clamps so that the gap between the wall and the pipe is at least 120 mm.

Installation of seam roofing: scope of work

1. Construction of a rafter system, steel or wood;
2. Antiseptic and fire protection of rafter structures;
3. Installation of insulation, vapor and waterproofing (in case of installation of an attic roof);
4. Installation of lathing (counter lathing);
5. Installation of standing seam roof covering with installation of ridges, arrangement of valleys adjoining vertical walls and chimneys;
6. Installation of eaves gutters and overhangs, ridge and eaves vents, parapet coverings, ebbs;
7. Installation of safety railing, installation of fencing, drainage system;
8. Installation of hearing and skylights, walking ladders, snow retention systems;
9. Hemming of eaves overhangs.

Installation of seam roofing made of rolled material

When carrying out repairs or re-roofing industrial, administrative or multi-storey residential buildings, you should pay attention to seam roofs made of rolled materials: galvanized steel (including non-ferrous coating) or non-ferrous metals (copper, titanium-zinc, aluminum).

From rolls of galvanized (in the example under consideration) steel mechanized way blanks and paintings are cut with a width of up to 625 mm and a length of at least the length of the roof slope.

Seam roofing is a great option for roofs with a slight slope. German craftsmen invented the seam roof (you may have already guessed it from the name). In translation, “seam” simply means a gutter, and the installation of a seam roof consists of such simple connections - snapped or clamped, and that’s it. But why then, with such simplicity, seam roofing is not common?

The problem is that previously the fold was made from sheets only by hand. The process was labor-intensive, the joints were not very smooth and it was difficult to talk about the tightness of such a roof. And only with the advent of professional equipment did seam roofing rediscover itself: smooth connections, any length and speed of installation did their job. Want to know more?

The roof, which is made from individual metal sheets, is called seam roofing. Seam roofing appeared in Russia a little over 100 years ago, and quickly gained its popularity. And with the production of mechanical and electric seaming tools (previously, seams were connected only by hand), its installation became accessible to everyone. See for yourself:

Among the advantages:

• Light weight of the roof, which is valuable for any buildings.
• Excellent protection against leaks. All thanks to the tightness! There are no through holes anywhere on a seam roof that could become a source of corrosion or other problems.
• Seam roofing is also attractive due to its ease of installation, which almost anyone can handle.
• Such a roof can be done not only on ordinary pitched roofs, but also on more complex architectural objects.
• Seam roofing looks aesthetically pleasing and can be combined with any type of building materials.
• The main advantage of a seam roof is the 100% tightness of the roofing covering, under which neither snow nor rainwater can get under. The fact is that such a roof has a minimum of holes, unlike a metal roof, which means a minimal risk of moisture getting into the under-roof space. No corrosion!
• 20 years minimum service life. In principle, seam roofing is durable due to the fact that its connections are inaccessible to water. Plus, there are no transverse seams or open joints that would prevent water flow and snow melting.

And also quite simple installation:

Let us note right away that all the shortcomings that are usually attributed to seam roofing come precisely from improper installation.

• Thus, the most common complaints are about loud noise from rain, when drops simply drum on the seam roof. To avoid this, you need to use a perfectly flat sheathing, then the metal sheets will fit tightly enough to it and not create a noise effect.
• Repair of folds is periodically necessary. It depends on how they were made and with what.
• An avalanche of snow. Yes, on such a flat roof he has no choice but to quickly slide down, but what are the snow holders for then? In Europe, for example, they don’t even insure a house if there are no such elements on the roof.
• Simple design and lack of a wide choice of colors and textures. Yes, not everyone likes the minimalistic aesthetics of a standing seam roof. But a matter of taste is always a subjective matter, and someone just doesn’t want to see the ubiquitous metal tiles.

Now look at what else you can do to get rid of the noise:

Selection of design and material

To make it more convenient for you, we suggest that you first understand the concepts a little.

Paintings- these are rectangular metal elements with folds, which are mounted on the roof. Standard form– steel sheets in the form of a rectangle with cut-out corners. The seam roof is made from paintings.

fold- This is a specific seam that is obtained by fastening different sheets of metal together. The advantage is that with such a connection the density is quite high, and neither sealants nor adhesives are needed to ensure complete tightness. And, in addition to their main task, the folds also play the role of stiffening ribs for the entire roof.

Klyammer- This is a special fastener that is nailed directly to the base of the roof. A simple clamp has the same shape as the future rebate blank, and a movable one ensures the future thermal expansion of the metal (compression and expansion at different times of the year).

As you can see, everything is simple and you don’t need to worry about anything.

Material for making paintings

Seam roofing is made from both galvanized steel and various non-ferrous metals. Here are the materials that seam roofing is most often made from today:

Option #1 – steel

The most common option. Steel seam roofing can be galvanized, non-galvanized, or additionally coated with polymer. The advantages are corrosion resistance, low cost and durability (60 years of service).

But over time, steel, unfortunately, noticeably tarnishes. Therefore, to install a seam roof, steel paintings should only be taken that are covered with a colored multi-layer coating. And when purchasing these, make sure that they have a special protective film– this is the only way the material will not get scratched during transportation.

But in any case, even a high-quality polymer coating on the roof will not be durable: due to sunlight, acid rain and the most important enemy - the humid maritime climate.

Option #2 – copper

This is the most beautiful roof, which simply burns on a sunny day. Its main advantage is that no biological life will take root on it, especially moss. But there are also many disadvantages - such metal is soft, requires careful handling and is quite expensive.

Over time, copper also becomes covered with patina - a layer of oxides, and becomes dark brown. And after a while - green, and nothing needs to be restored. And it is precisely because of the oxides that copper cannot be combined with other materials on a seam roof.

Copper seam roofing is also valuable for its flexibility - it is easy to make roofing architectural masterpieces with it, not to mention simple roofs:

Option #3 – zinc

The zinc seam roof is additionally covered with a protective layer – zinc carbonate. Over time, such a roof acquires a chic silver-gray color. A zinc roof lasts for about 50 years, which is relatively short, and therefore in Europe such material is no longer used for making paintings.

Option #4 – aluminum

This type of roofing is the most resistant to mechanical damage and corrosion, and can last more than 100 years! And the pleasant silver shine will only please the eye.

In addition, this material is lighter than steel and more resistant to corrosion. But aluminum is bad because it expands and contracts much more strongly with temperature changes. That is why the installation of such a roof has its own characteristics:

Option #5 – zinc-titanium

This is a strong, successful alloy of zinc and titanium: zinc does not corrode, and titanium has both strength and ductility. This coating is also valuable for designers, because over time it becomes covered with a noble patina. The roof looks great!

Option #6 – aluzinc

Aluzinc is steel paintings with an aluminum-zinc coating, which has valuable self-healing properties and perfectly protects scratches and cuts from corrosion.

Option #7 - an alloy of three metals

Titanium-zinc-copper alloy. There is not much copper here, only 0.005%, but this is enough to give the roofing material plasticity, which makes profiling easier.

Special coating

If your house is located in a coastal area or an area with poor environmental conditions, or simply a hot and humid climate, then purchase folded paintings covered with pural. Only this polymer is capable of high level protect from sea air, rain with acidic impurities and scorching ultraviolet radiation.

Production technology

Seam roofing is also divided according to production technology - into cast and roll.

Cast roofing has long been used in Russia, and its reliability has already been tested. It is easy to install such a seam roof with your own hands and without special tools, there are no transverse seams, and the surface is complete and durable. But rolled seam roofing is already new technology with its advantages and disadvantages. These are metal strips for the entire length of the slope, and immediately with prepared edges using a special machine. The fold is formed double.

And according to the width of the patterns and the presence of stiffeners, seam roofing is divided into the following types:

• Double fold and two stiffening ribs. This type of roofing is most in demand in the industrial sector. It is used to destroy warehouses and large buildings with very different roof slopes. Standard width– 5.57 m, working – 5.45 m.
• Double fold and two stiffening ribs, but smaller width - 35.2 m (working 3.4 m). This type of roofing is used to cover the roofs of cottages, large residential buildings and historical monuments.
• Double fold without stiffeners. There are also two types of such roofs, based on the actual width - 5.57 m and 3.52 m. Both are quite suitable for residential buildings and ordinary private houses.

And folded panels can also be ordinary and starting, trapezoidal and parallel:

Market offers

If we talk about brands, in Russia, as well as abroad, the most popular Finnish seam roofing is from the Ruukki company, with self-latching seams.

More favorable prices are available for materials from the domestic plant “Insi”. It has been on the market for more than 16 years, and is quite pleased with the quality of its products. In production there are both ordinary glossy and matte paintings, as well as unique ones for creating a special roof design.

Seam roof installation technology

To install such a roof, you do not need any special supports, expensive lifting equipment, or additional consumables.

Stage I. Preparing the foundation

Seam roofs can be installed either on sheathing or on a solid base. Both bars and metal hat profile are suitable.

It is only important to adhere to the spacing between the rafters of no more than 2.5 meters - otherwise even the strongest steel sheets risk bending and the seams will immediately separate:

Here's how to fold the backing sheet yourself:

Stage II. Working with paintings

On workplace You can bring both finished paintings and rolled steel, which you will cut on the spot.

Once the steel paintings are ready, they are lifted onto the roof. Lay out along the cornice directly onto the sheathing and begin installation from the middle.

Stage III. We prepare additional elements

For roofing roof edges, valleys, ridges and elements such as chimney, roof connection and dormer window, it is necessary to make ready-made paintings from rolled steel in advance - but in a shaped form.

Here detailed master class How to make your own drip edge for a standing seam roof:

Stage IV. We bend the folds

So, we moved on to the most important technological question: how to make folds?

Types of connections

The folds in such paintings are single and double, standing and lying. To simplify, all horizontal folds are called lying folds, and vertical folds are called standing folds:

A single standing seam is the easiest to install:

A double fold is a double fold of the edge. It must be done in the most problematic areas of the roof, where snow and water usually like to accumulate - valleys, gutters and other complex joints. This is the strongest and most airtight, which is why it is also the most popular abroad.

Double standing seam is recommended for roofs with a slope angle of less than 25°. True, in Russia, double folding is still considered an unreasonably expensive technology. Although in fact the price is exceeded quite a bit, the reliability of such a connection is much greater. Here's how you can make it during the roof installation process:

But, if you want the seams between the paintings to be smooth and the entire roof to look even, then make rebated seams. And horizontally, the paintings are connected to each other only by lying folds - so that the coverage is maximum. If the captured steel strip does not reach the depth, such paintings will disperse over time.

The third type is a corner standing seam, which is also called L-shaped. It is recommended for roofs with a slope angle of more than 25°. It is simpler to perform than a regular fold - you just need to correctly bend the top edge of the seam.

Height of stiffeners

Now let’s talk about the height of the rebate, which also serves as a stiffening rib for such a roof. The fact is that this connection is absolutely waterproof unless it is exposed to standing water. But where on the roof can it come from in this form? Very simply - from the thickness of the snow. Therefore, the height of the rebate matters, and in especially snowy regions it is done quite a lot.

Additional sealing

Additionally, to prevent water from entering the seam, special sealing gaskets are installed in the seam during the installation process. A special material is used that can easily withstand high temperatures (up to 90°C) and compression, because rolling mechanisms for folds will also be used.

Another important point: all fasteners that you will use must only be anti-corrosion. Otherwise in a couple of years a new one beautiful roof will be covered with rusty streaks.

Folding technology

You can fasten the folds together using a hammer and wooden beams, special hand tools or using electromechanical machines. The simplest option is with a frame:

Before folding the folded fold, the picture must be attached to the flooring with a separate narrow strip to stabilize its position.

The fold is made from the front and back, and on the left and right there are vertical elements of the fold.

Using a clamp

The most common fastening method is clamps. They are bent back by 25 mm, and the paintings are nailed on the right side.

The clamp is a metal strip made of galvanized steel, 80-120 cm long and 0.5-0.7 mm thick. You can cut the clamp from a regular galvanized sheet using a simple hand tool. Next, place the clamps along the edge of the paintings every 60 cm and fasten with self-tapping screws (4.8x28).

So, first we put the picture on the crate, then we fasten it with a clamp and only then we cover it with another picture. You need to nail the clasps along the line connecting the two paintings: one sheet is placed on the clasp from above, and the second is slipped from below, and we wrap three layers of metal in one direction, after which we close the folds to the end. We press it, and we get a strong and reliable connection with the clamp, which is hidden inside and holds both sheets on the roof. This type of fastening is a 100% guarantee against leaks and cold air for many years.

Now let's figure out how the work of a professional differs from that of an amateur. Yes, for the usual home handyman With quite dexterous hands, one mallet, scissors and a hook bender are enough to install gutters. But an experienced person, an expert in his field, equips himself with at least a dozen expensive special scissors, not to mention frames, pliers and other tools. Moreover, the total cost of such a set may be more expensive than the folding machine itself.

To close folds today, a semi-automatic tool is most often used, the use of which provides many significant advantages:

• High performance.
• High quality seam.
• Safety polymer coating paintings
• Ability to work with metal of any thickness.

Recently, paintings have also begun to be produced, the folds of which easily snap into place when pressed - and no tools are required!