For arranging the roofing part in lately Metal tiles are increasingly being used. The material is supplied in the form of profiled sheets with a polymer coating. If you wish, you can install the metal tiles yourself. Step-by-step instructions will help you do this without serious mistakes.
Work on laying fragments roofing
The products are based on steel sheet thickness 0.45-0.55 mm. It is galvanized and has a special polymer-based coating. The cost of production may vary depending on the thickness of the metal and the type of protective layer.
List of advantages
First of all, it is necessary to highlight the following advantages:
- aesthetic appeal;
- resistance to atmospheric influences;
- affordable price;
- lightness of the main elements.
Pay attention! Polymer coatings perform not only a protective, but also a decorative function, since their colors can vary over a fairly wide range.
Few disadvantages
Since the sheets have a small thickness with sufficient large sizes, the risk of damaging them during careless installation still exists. If all the rules are followed, the integrity of the elements is difficult to violate.
Another disadvantage is the appearance of a noise effect when heavy rain during operation. However, with proper soundproofing of the living space, this disadvantage is completely eliminated.
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Tools for installation work
It is necessary to prepare in advance a set of tools and additional devices for the work:
Pay attention! It is forbidden to cut sheets using abrasive wheels, since high temperature exposure leads to the destruction of not only the polymer, but also the zinc layer.
Basic set of additional parts
IN step by step instructions for the installation of metal tiles, the main elements used in conjunction with the sheets should be mentioned. They are used depending on the roof configuration and operational features.
We suggest taking a look at the list of basic parts:
- a ridge is required to close the upper joint between two slopes;
- the end strip is necessary to decorate the edges on the side of the gable overhangs;
- the valley is installed in the places where the slopes combine;
- the cornice strip is attached to the side of the gutters;
- the junction strip is mounted in the presence of a pipe and other protruding structures;
- A snow retention element is needed to prevent snow from sliding off the roof.
Instructions for installing metal tiles: step-by-step execution of work
Loading and unloading of products can be done manually, but during the work a certain number of people must be involved. Usually 1 person is required for 1.5-2 linear meters sheet length. That is, when unloading metal fragments with a length of 6 m, 3-4 people should be present.
Waterproofing device and fixation of control bars
If thermal insulation is installed between the rafters, then waterproofing material must be present in any case. It is attached with brackets to the load-bearing part of the roof. The canvases are spread across rafter legs with an overlap of at least 15 cm on all slopes.
50x50 mm bars are nailed directly onto the rafters, providing a ventilation gap between the waterproofing and the roofing material. For fixation, nails of at least 90 mm are used.
Correct installation of sheathing under metal tiles
Typically used as sheathing edged board 25 mm thick and 100 mm wide, but the final choice will depend on the pitch of the rafters. The elements are attached to 50x50 mm bars using nails no less than 70 mm long. The distance between the boards depends on the wavelength of the metal tile used.
In the place where the ridge element is installed, it is recommended to install two planks close to each other. This will simplify the installation of the ridge on the metal tiles. The same should be done at the places where the valleys are attached. The bottom board of the sheathing should be higher than the others by the height of the wave. Usually the thickness of the lining is enough to compensate for the difference.
Installation of parts mounted to sheets
To protect the ventilated space under the roof from the penetration of moisture and street debris, metal tile eaves strips are installed. A ventilation tape must additionally be attached to the ends of the 50x50 mm bars.
When installing the valley, a universal seal is laid. The bottom edge of the element should be on the surface of the cornice board. When joining horizontally, an overlap of at least 30 cm is made.
Lining a brick chimney involves extending the waterproofing membrane by at least 50 mm. A groove is made in the pipe itself, the depth of which should be at least 15 mm. Water is discharged into the valley located in the immediate vicinity.
The process of laying and fastening sheets
All sheets must be aligned horizontally with an extension of 50 mm beyond the sheathing. When fixing metal elements, the following points should be adhered to:
- the self-tapping screw must be installed in the deflection of the wave, where the sheet is adjacent to the sheathing;
- fastening to the bottom board is carried out above the step directly through the wave;
- Along the edge of the slope, fasteners are screwed into each wave.
Installation of end strips and ridge
Elements for closing end joints are mounted in the direction from eaves overhang to the skate. The overlap on adjacent planks should be 10 cm. The recommended spacing between fasteners is 35 cm.
As for the skate, it is fixed to the upper crest of every second wave. When building up elements, an overlap of at least 15 cm is left. Self-adhesive sealing tape is attached along the entire length.
Additional instructions for installing snow guards on metal tiles
The number of elements to hold snowdrifts on the roof is selected taking into account the geometry of the roof. In areas of heavy snow scraping, two rows can be installed metal profiles. Pass-through type snow guards are optimal solution for individual buildings. They are attached using long screws to the sheathing itself through . The distance between fixation points usually ranges from 50-100 cm.
Metal tiles are produced using high-tech equipment from galvanized steel sheets. The sheets are coated with a primer and then a polymer coating. Polymer coating plays an important role in the characteristics of metal tiles - texture, color, resistance to corrosion and weathering. The strength and rigidity of metal tiles is ensured by the profiling method.
The main advantages of installing metal tiles:
- strength, reliability, resistance to temperature changes
- long service life
- light weight, easy to transport and install
- environmentally friendly building material
- fire safety
Diversity color shades and volumetric pattern give the metal tiles an aesthetic appearance.
Metal roof installation
The rafter system is load-bearing structure roofs. After installing this structure, the installation of metal tiles begins.
Construction of a house roof made of metal tiles.
DIY installation instructions for metal tiles
How to cover a roof with metal tiles? You need to start with calculations.
Calculation of metal roof tiles
First of all, you need to do roof measurement using a length tape measure. Complex roof structures are broken down into separate areas and are measured. The accuracy of calculating the required roofing material depends on the number of measurements taken.
Next, each measurement taken must be divided by the width of the roofing sheet. It should be remembered that the metal tiles are laid in an overlap. Therefore, only the useful width of the roofing sheet is taken into account.
Cutting metal tiles
To cut sheets of metal tiles must be placed on a flat, reliable base. Scissors that are suitable for cutting metal tiles:
- metal scissors
- electric cutting shears
- Lever metal scissors.
To avoid corrosion, the cut areas after cutting metal tiles must be treated with repair enamel.
Rules for fastening metal tiles
How to attach metal tiles? When installing metal roof tiles, the following are used: special roofing screws
up to 28 mm long. The self-tapping screw for metal tiles has a sealing washer and a hex head. Required condition When choosing self-tapping screws, the color and service life must be exactly the same as that of the roofing.
The screws are screwed in with a screwdriver. Very important stage- catch the torque of the screwdriver. If screwed in insufficiently, the sealing washer of the self-tapping screw will not create a certain degree of sealing. If the screw is screwed in too much, the sealing washer is deformed, which threatens to loosen the fastening.
Self-tapping screw must be attached to the bottom of the wave metal tiles. The rigidity of the upper part of the wave is not enough for a tight connection of the self-tapping screw with the sealing washer. At the top of the metal tile wave there is no area adjacent to truss structure. At this point, the self-tapping screw will simply crush the roofing sheet.
For one square meter metal tiles need to be screwed in 6-8 screws. Roofing sheets fastened together with shorter self-tapping screws.
Video instructions for installing metal tiles with your own hands will help you cover the roof.
One more thing detailed video on laying a metal tile roof with your own hands.
Installation of the valley
Functions of the valley when installing a metal roof:
- protection of the joints of two slopes from precipitation
- reduction in rainfall and snow loads for roofing
- improving the external aesthetic appearance of the roof.
The valley covers the space between two roof joints. There are lower and upper valleys.
The lower valley is installed before installing the metal tiles. Protects the under-roof space from moisture.
The upper valley is attached on top of the metal tile sheets. Serves mainly decorative element and gives the roof an aesthetic appearance. When fastening the upper valley with self-tapping screws, it is necessary to ensure that the middle of the lower valley is not damaged.
Valleys made of galvanized steel will extend the life of the roof.
Installing a ridge on a metal roof for ventilation
Warm air from interior spaces the house rises up. This contributes to the formation of moisture under the roof. To avoid such troubles, you need to install the board on ridge run. The board serves as a separator between the two halves of the roof. This is necessary so that the roof always gives ventilation air only on one side. This function is performed ridge for metal tiles.
Using a ridge and ridge board, the roof is constructed so that each ventilation area discharges air into a separate duct.
Installation of metal tiles with your own hands must be carried out, observing all the above rules. Then, for a long time, there will be no need to repair or replace the metal roofing covering.
Metal tiles are extremely popular because they have significant advantages over other roofing materials. Using metal tiles when covering the roof, you will provide your home with reliable protection from aggressive influence environment. Let's considerhow to cover a roof with metal tilesand what it will take.
The advantages of this material include:
- low cost;
- pleasant appearance;
- reliability;
- light weight;
- long service life.
What will be required at work?
Before starting work, you need not only to carefully study the instructions, but also take care of all the necessary materials and tools. First of all this:
- metal scissors;
- roulette;
- hammer;
- hacksaw;
- marker;
- stapler with galvanized staples;
- wooden slats of suitable length;
- screwdriver;
- drill.
Pay attention! It will be quite difficult to cut metal tiles with hand scissors. complex profile, so it is better to use a power tool for this (if possible).
It is also worth noting that the material is coated with a special polymer coating, which must not be damaged under any circumstances - it performs an anti-corrosion function. For this reason, you should exclude all cutting options that involve heating the area being cut. The optimal tool for cutting may be a grinder, but onlywith abrasive wheel.
Regarding necessary materials, then for work you will need:
- metal tiles;
- board for constructing sheathing, 2.5x10cm;
- wooden beam, 2.5x5 cm;
- mineral wool for insulation;
- waterproofing (any except bitumen).
Let us immediately make a reservation that this material is not suitable for all types of roofing. The fact is that the roof must meet certain requirements, namely:
- to be pitched;
- have a slope of more than 14°;
- have simple geometry.
If the roof has complex design, albeit straight, then during installation it will be necessary to make more than a dozen trimmings, which will increase material consumption(after all, most of it will simply go to waste). Consequently, this will greatly increase the cost of building materials and installation itself.
Preliminary roof measurement
You need to start work with a competent measurement of the roof, its length and width - this will allow you to calculate the required amount of materials. If the width of the slope is no more than six meters, the length of one sheet should be equal to this width (with a small margin for the cornice). But if the width of the building exceeds six meters, then the sheet is divided into two parts, which are installed with an overlap of approximately 10 cm.
The sheet of tile itself must be at least 4 cm longer than the slope. The fact is that the sheet is attached to the slope, slightly overlapping the cornice. This allows us to ensure good ventilation under the roof ridge.
After this, the roof needs to be measured diagonally. It is also worth making sure that the roof has the correct geometric shape. Moreover, at this stage all defects and distortions will be revealed that need to be corrected immediately.
Before you begin installing the sheathing and laying the tiles, you need to ensure that the roof good waterproofing. This will prevent condensation on the inside of the roof, and even after leakage, moisture will be retained by a special substance - absorber
The most accessible and therefore popular insulating material considered a vapor barrier film. Treated with a special absorbent substance, it is installed directly above the room.
The insulation must be laid on rafter system so that the initial overhang layer does not exceed 2 cm. The following layers are overlapped by approximately 15 cm. A small sag can be left between the rafters, but not more than 2 cm. To fix the film, galvanized nails or a mounting stapler are used.
In parallel with waterproofing, the roof should also be insulated. Insulation boards are placed between the rafters. If the material is made in the form of mats, then it must be secured with the same mounting stapler (in in this case it all depends on the chosen material; this issue has already been discussed in one of the previous articles).
Assembling the sheathing
To assemble the sheathing, it is necessary to attach it to a layer of waterproofing along the slope wooden beams. Then boards 2.5 cm thick and 10 cm wide are attached to the beams.
Pay attention! Installation of boards must begin from the bottom! The first board should be approximately 1–2 cm thicker than the others, because it is on it that the edges of the metal tile sheets will be installed.
The pitch between the boards can be different, from 30 to 45 cm, depending on the transverse profile of the roofing material. It is typical that the step between the first and second boards should be approximately 4 cm smaller than between other battens. Before starting work everything wooden elements should be treated with an antiseptic and (if possible) a fire retardant.
When installing the sheathing, you should special attention devote to auxiliary elements.
- On both sides of the roof you need to install additional bars on the rafters - this will increase the reliability of fixing the ridge.
- When installing waterproofing, you need to extend it a couple of centimeters onto the chimney pipe and seal it with reinforced tape - this will help hide the gaps that have formed. On the chimney itself, it is necessary to make grooves (small grooves) 2 cm deep. Upon completion installation work You need to install adjacent strips into these grooves and insulate the joints with silicone sealant.
- Valleys should be installed in the gaps formed between the slopes. For this purpose, it is mounted from boards continuous lathing with an additional layer of waterproofing. Each of the valleys should be installed above the cornice strip and secured with self-tapping screws every 25 cm.
- You need to install a cornice strip on the frontal board with self-tapping screws and secure it every 25 cm. Such a strip must withstand strong wind, so it is installed with an overlap of 12 cm.
Work on laying tiles is carried out in the following order.
First stage. Actually, we have already discussed it above - it consists of installing cornice strip to the frontal board of the sheathing. We remind you once again about the mandatory 12-centimeter overlap.
- In case gable roofyou need to start work from the end of the ramp. If it was decided to cover from the right slope, then each subsequent sheet is installed on the extreme wave of the previous one. But if the material lies on the left end, then the new sheet is installed under the extreme wave of the one in front of it.
- Hip roof you need to cover from the highest point, gradually lowering (it’s all about the features geometric shape hip roof).
All sheets must be laid parallel to the cornice, with a mandatory 4-centimeter plumb line.
Third stage . If the sheets are installed in one row , then the first of them needs to be aligned with the cornice and temporarily fixed with a self-tapping screw in the area of the ridge. The second sheet needs to be aligned with the first and temporarily connected. So it is necessary to install two more sheets, then align the formed block along the cornice and secure it to the sheathing with self-tapping screws.
In case multi-row layingmetal tiles, the first sheet must be installed at the bottom, secured with a self-tapping screw and aligned with the end and cornice. A second sheet of tile is installed on top, and a third one on the side. All of them are temporarily attached with self-tapping screws. Then you need to level the formed block and finally fix it on the sheathing.
Finally, if the slope hastriangular shape, then first you need to determine and mark the center line on it. The same line should be drawn on a sheet of tiles. Then both lines are combined, the sheet is fixed with self-tapping screws. Subsequent installation is carried out on both sides of the first sheet.
Fourth stage . Self-tapping screws should be screwed into the recesses of the sheetsin one wave. Each new row of screws should be staggered relative to the previous one. There should be 7-8 screws for each square meter of material.
Overlaps need to be strengthened in each wave.
When covering a roof with metal tiles, special attention should be paid to the reliability of fastening the sheets and the accuracy of their joining.
As a conclusion
All work must be carried out in accordance with the instructions given, ensuring that the wooden elements are thoroughly dried and there are no signs of rotting on them. This is the only way to achieve durability and reliability of the design, as well as an attractive appearance roofs.
Video - Installation instructions for metal tiles
A reliable roof that has high-quality waterproofing and insulation along the slopes is the dream of any dacha owner or country house. Today, such a dream is easily achievable if it is fulfilled.
Before making metal tiles with your own hands, you will need to think about the issue of removing the old roof, which may lack waterproofing. In this case, everything will depend on the technology used to make the roofing cake and its condition.
List of items you will need to install a new roof on your home:
- hacksaw for metal;
- anti-condensation films;
- waterproofing;
- galvanized nails;
- self-tapping screws;
- sealing tape.
The process of performing control measurements yourself
After the installation of the rafters is completed, you will need to re-measure the dimensions of the roof slopes. This is due to the fact that during construction any deviations could easily arise. It is worth paying attention to the rectangularity of the roof, because additional elements can hide only small defects (no more than 10 mm).
It is worth knowing that during overlap metal roofs cutting sheets should be done exclusively using a hacksaw, hand-held power saw or special scissors.
It is worth noting that technology that includes waterproofing can only be used if the roof slope is at least 14 degrees.
The choice of type of snow guards for the roof will depend on what material the roof is made of and how much snow falls in a particular region. The main size that will determine the length of the sheets is the length of the slope. This is the distance from the roof ridge to the eaves, which must be set taking into account the overhang of the sheet from the eaves (up to 40 mm).
In the case where the slope is longer than 7 m, the sheets will need to be divided into two or more fragments, which are overlapped (at least 150 mm). The disadvantage of long sheets that have fewer joints is that they are very inconvenient to work with.
It is worth knowing that when cutting sheets, you need to do it exclusively with a hacksaw, a hand-held power saw, or special scissors. All places where bare metal remains must be treated with a special paint that protects the steel from corrosion. At the same time, it is not at all recommended to use a popular grinder with an installed abrasive wheel in order to cut sheets. Its use is not justified.
How to install the sheathing yourself
The space under the roof must have good ventilation, therefore, sheathing and counter-lattice will be needed. Anti-condensation films will need to be placed between the rafters and metal sheets. The waterproofing should be laid parallel to the eaves.
For soft roof from roll materials continuous sheathing is required.
The material should sag slightly between the rafters. A small slack in tension (1-2 cm) will be enough. You will need to nail bars on top of it along the rafters small sizes cross section from 40x25 mm. This will be the counter-lattice, on top of which you will need to fasten the flat bars of the sheathing. The distance is equal to the wave pitch of the metal tile. The board that will go onto the cornice will need to be chosen 10-15 cm thicker than the rest.
It is worth noting that the bars for the sheathing and all other wooden elements must be in mandatory treated with an antiseptic. It is able to protect them from insects and rot.
The installation of a metal tile roof must necessarily include the use special materials for waterproofing. There are 2 types of waterproofing, therefore, it is important not to make a mistake here. The first is intended to protect the insulation and rafters from any penetration of moisture vapor from inside the room. The second waterproofing is waterproofing films, which protect from wind, moisture and condensation. They must be installed exclusively on top of the insulation. They allow water vapor to pass through, so it does not accumulate in the insulation. The slope of the slopes prevents moisture that flows from the metal tiles from remaining on the film for a long time.
Do-it-yourself installation of the valley and cornice strips
Installation correct roof made of metal tiles requires protection not only from condensation that forms on the back side metal sheets, but also from precipitation. They can pose a danger to the bottom edge of the sheathing, so a cornice strip may be needed here. It consists of a number of boards that are nailed to the sheathing, overlapping each other. In order to do the installation yourself, you should install galvanized nails in increments of no more than 30 cm.
Scheme of a valley roof.
Valleys should be used when the slopes are adjacent to each other. The bottom edge of the valley should be laid on top of the completed cornice strip. It is necessary to use a porous seal to get rid of the gap between the roof covering and the bottom valley strip.
A valley overlay can give the roof structure a complete look; it must be installed after installing the sheets. It is fixed at the top of the wave, the step being 30-50 cm.
Install end strip necessary using self-tapping screws. In this case, the step between them should be no more than 40 cm. The planks themselves must be mounted overlapping (10 cm) along the length.
How to install a metal roof with your own hands
Installation of the coating should begin from the end of one of the slopes after the preparatory work has been completed, which includes laying anti-condensation film and installing the sheathing.
If installation starts from the left end, the second sheet must be installed under the last wave of the first. When work begins on the right end of the roof, a new sheet must be laid on top of the last wave of the previous one. In case there is hip roof, installation will need to start from the middle of the slope, after which the installation is carried out evenly in both directions.
Each of the sheets has a capillary groove, which is located along its edge. This groove should be covered by the edge of the next sheet. The covering sheets must be aligned along the eaves strip.
The screws used to secure the sheets must be in the deflection of the wave.
The obvious fact is that it is not difficult, but there are some nuances that you need to know about. For example, the screws used to secure the sheets must be in the deflection of the wave. It is necessary to use only those self-tapping screws that have a special sealing washer. In this case, they will need to be screwed in strictly perpendicular to the sheathing material. The average consumption of self-tapping screws is not high at all. It is up to 8 pieces per 1 sq. m.
If you screw in the screws at an angle, they will not be able to press the sealing washer tightly, therefore, a potential leak will appear in the roof.
An important issue is the movement on the roof during construction or repair work. It is worth noting that movements around finished roof It is recommended to avoid it altogether, but if you follow all existing rules, it may cause only minimal problems.
It is recommended to use shoes that have soft soles. It is allowed to step only on the deflection of the wave and only in the place where the sheathing will be located under the metal layer. Under no circumstances should you step on the crest of a wave.
DIY ridge installation to ensure good ventilation
A correctly installed skate is the key to good, high-quality ventilation space under the roof.
This element needs to be given special attention when installing a metal roof with your own hands.
The sheets of covering should not converge towards each other, and there should be enough space between their edges under ridge strip. The skate should be fixed using self-tapping screws that are screwed into the top of every second wave. Will need to be pasted over sealing tape the edges of the sheets themselves.
If you need to make a semicircular ridge on hip roof, it would be best to use special elements such as Y-shaped overlays.
Even if the person who performs renovation work, will know that he may make a mistake when making a joint with such a vertical surface as a pipe or wall. In such cases, the contact area will be isolated using a junction strip and a self-adhesive seal. Additional sealing can be easily created using sealant.
The lower junction strips must be installed in a groove prepared on the surface (pipe or wall). To do this, you should perform a groove, after which you will need to remove dust and wash the groove. The abutment strip is trimmed, installed and fixed using self-tapping screws.
After the work is completed, you will have an internal apron, but you will also need to organize water drainage. To do this you should use flat sheet metal, the edges of which will form sides.
In addition to the internal apron, you can also use an external one, which is created from the upper abutment strips. Installing it is almost the same as the internal one, with the exception of gating. The edges of the planks are simply secured to the wall.
Some difficulties may arise when working on broken roofs. Such elements can be internal and external. In the first case, an abutment strip is used, which is installed together with the seal. If we are talking about an external break, you will need to use a cornice strip.
Do-it-yourself installation of a drainage system and snow guards
Systems should be used rectangular section. The gutters need to be mounted below the edge of the roof by 2-3 cm. The lower edge of the eaves strip should cover part of the gutter, and the waterproofing film should be placed on top of it.
Snow guards are installed on the mounting strip using self-tapping screws that reach the sheathing. They screw up every second wave.
Metal tiles are one of the modern roofing materials, characterized by high aesthetics and durability. In addition to the fairly significant cost of the material itself, considerable costs required for its installation - in Moscow from 500 to 650 rubles per m 2. Therefore, it makes sense to do this work yourself.
Covering the roof with metal tiles - material calculation
Do-it-yourself metal tile roofing will help you out when building new home or the time has come to replace the covering on the roof, but there is not enough money to pay for the work. The properties of the material distinguish it favorably from other coatings:
- everyone can choose their own color and profile from a variety of options;
- due to its low weight, it is not difficult to install the sheathing;
- the roof has an elegant look;
- the material lasts for decades without repair.
When installing a metal roof, we calculate how much material will be needed for installation. The documentation for the coating indicates two sizes - total width and working width. We take into account the working width, which is slightly less than the total. First, we find out how many rows will fit vertically: we measure the width of the slope, then divide it by the working width. We round the result to a higher value.
Then we calculate the length of the row vertically and find out how many sheets are needed. To calculate the length, we sum up the distance from the cornice to the ridge, the overlap of the sheets and the length of the overhang. The overhang is usually about 50 mm, the size depends on the thickness and rigidity of the metal. The overlap - from 150 to 250 mm - is determined taking into account the characteristics of the material and the angle of the roof; the thinner the tiles and the smaller the slope, the greater the overlap.
In this way, the material required for a rectangular gable roof is calculated. For designs with complex configuration the calculation is made for each slope separately, the results are summed up.
Waste is determined by the difference between the original and rounded values. The least waste can be generated if calculations are carried out before designing the roof. Then for regular roof the width of the slope is adjusted by increasing the length of the sheathing, which protrudes beyond the gables. By finished roof This cannot be done; you must proceed from the existing parameters.
When calculating the need for material when building a metal roof, we take into account the width of the ridge. If you use a wide ridge with 165 mm blades, then the sheets on opposite slopes can be placed with an interval of up to 50 mm. The slope can be adjusted with boards (fillies), which lengthen the rafters and create an overhang. The fillies are carried out on all sides to the same length.
Preparatory work - assembly of rafters and sheathing
Before you start covering your roof with metal tiles , rafters are made from beams with a section of 150 or 100 by 50 mm. The same distance of 60–90 cm is maintained between them; if you do more, the sheets will bend. We use dry wood with a moisture content of 22% or less. We pre-treat with antiseptics and impregnate with a fire-fighting solution. The roof slopes must form a flat plane and be rectangular, otherwise it is possible that the sheets at the joints will not meet and moisture will get under the roof.
We take two pieces of rope of such length that it is enough to cover the roof diagonally. They should lightly touch the rafters, not be far from them or supported by them, but simply lie on the beams. We measure the length of the ropes, the difference should not exceed 10 mm, which indicates the rectangularity of the roof. If defects are found, we eliminate them. For large distortions, it may be necessary to reinstall some rafters.
Next, we cut out grooves in the cornices, attach a cornice board to them, which gives the entire structure additional reliability and serves for installation on the gutter hooks. Even greater rigidity will be provided by the frontal board, which is installed at the ends of the rafters. We attach a block to the wall of the buildings, placing it at the same height as the front board. Between them we install crossbars that form the sheathing for the hemming.
We lay the sheathing along the rafters parallel to the cornice, the first two boards after 28 cm, the next - after 35. In places where the chimney, attic windows and similar elements are installed, we make the sheathing continuous at the junction of the slopes. The ridge should be securely fastened, so we attach additional boards on both sides.
We take care of long-term service - we provide ventilation and waterproofing
Proper ventilation and good insulation help ensure long-term use of metal roofing. Insulating elements are collectively called roofing pie: It prevents water and dust from penetrating under the roof. The type of insulation depends on the type of roof chosen. For cold weather we install waterproofing, for warm weather we install vapor barrier. We lay the film along the rafters along the roof, attaching it with a stapler. We install a counter-lattice on top.
For warm roof We install several layers, a vapor barrier - under the sheathing from the inside. The next layer is insulation, we fill it loosely so that the waterproofing sag between the rafters by approximately 20 mm. This ensures that the insulation is blown through and gets rid of moisture. We fix the waterproofing with 50x50 mm bars, and install the roof sheathing on top.
When we attach the cornice trim, we do not install the material tightly, leaving gaps. They will play the role ventilation gaps. We cover the cracks with fine mesh so that birds and insects do not penetrate through them. For effective ventilation the area of the holes should be calculated. It should occupy a hundredth part of total area stingray But holes are also needed on the ridge so that air can escape through them. We divide the area of the slope by 2 - half of the area of the ventilation holes falls on the sheathing of the cornice, the second - on the holes in the ridge.
Installation of metal tiles - covering the roof correctly
A roof covered with metal tiles can be durable and reliable if you follow some installation rules:
- 1. We carry out installation wearing soft shoes so as not to damage the top layer. We walk along the roof, stepping between the waves; in the transverse direction we walk along the fold.
- 2. Water may leak through the overlaps during rain. To avoid this, each sheet has a groove for water drainage. When laying, make sure that the grooves of the sheets match.
- 3. We always start installation from the side that forms a right angle, and there is no need to cut the metal tiles. It doesn’t matter whether it’s the right or left side, we lay it in any direction, as long as it’s convenient.
We install the sheets with our own hands according to the instructions in a single-row or multi-row method. With the single-row method, we temporarily fix the first sheet in the center near the ridge, focusing on the end and cornice. We lay down the next sheets, grabbing the previous ones on top of the waves, level them, and fasten them together. Lay out, align and connect no more than four sheets in a row. We align the resulting block along the cornice and attach it to the sheathing, except for the last sheet. It is attached after adjusting the next block.
Multi-row installation starts from the bottom; we align the sheets, focusing on the end and cornice. We lay the next sheets vertically, ensuring overlap and temporarily attaching them in the center. We level it from bottom to top and fasten it to the sheathing with self-tapping screws. We also mount the next rows vertically, align and fasten them together.
By mounting the tiles on a triangular slope, we mark the center line on the sheet. We draw the same line along the sheathing. We combine the lines of the sheathing and tiles, attach the sheet on top of the ridge. Next, we carry out installation similar to the previous methods on both sides. We cut the sheets on the roof using a dash - a device made of two boards 100 mm wide, easily fastened together by two others.
