Additional elements are an essential part of a metal roof. They are designed to ensure the tightness of adjacent parts, as well as to prevent any debris, dust, insects, etc. from getting under the roof. Additional elements may be needed for the ridge, cornices, gable edges, valleys, internal corners, and pipe passages. In this article we will talk about components for metal roofing, that is, additional elements.
What components are needed
Extensions are galvanized steel strips installed where the roofing material is joined, as well as in transition areas. These products most often have a length of 2 m, and their thickness ranges from 0.4 to 0.7 mm. The width varies quite a lot, and is determined by the dimensions of the mounting shelves used. The additions can be coated with polymers to match the color of the metal tiles, which leads to a slight increase in price, however, such material becomes much more beautiful.
Often, when connecting ridges or upper valleys that are in a visible place, it is polymer-coated products that are installed. They fit best into the overall picture, complementing the color of the tiles. Naturally, if there is an overlap of the joints under the sheets of metal tiles, then in this case we are not talking about decorativeness.
For example, for the lower crowns it is more advisable to install simple galvanized strips without coating. This way you can save some money and still ensure a sufficient seal.
There are the following components for a metal tile roof:
- cornice strip;
- wind bar;
- skate;
- valleys;
- abutment strips;
- snow retainers.
It is worth considering each component in detail.
What is a curtain rod
This product is nothing more than a steel corner used to decorate the lower part of the roof along the entire length of the eaves. The eaves strip is necessary to protect the eaves board from water, as well as to drain it if it is under the roof. One more point - it is necessary so that the cornice line takes on a finished look.
Install such a strip before laying the metal tiles, but after installing the drainage system. The mounting shelf is secured to the sheathing on top of the gutter holders. To do this, you will need galvanized screws, which are screwed in at intervals of 30 cm. For the entire cornice, you will need several of these strips, connected to each other with an overlap of 5-10 cm.
Pediment (wind) strip for metal roofing
This bar is also made in the form of a corner. are carried out along the entire length of the gable overhang to protect the ends of the sheathing and the space under the roof from moisture, various debris, birds and insects, as well as from the effects of wind.
The end strip is attached at the very end of the roofing work, onto the metal tiles. Installation is carried out from top to bottom, overlapping the ends of the sheets of roofing material. This one is screwed on with self-tapping screws, which are screwed in every 50-60 cm with an overlapping length of 10 cm.
It is worth making sure that the end strip touches the upper ridges of the roofing material, slightly overlapping them. Thus, by installing a windbreak on the roof, you can protect the bottom of the metal tile sheet from moisture. In addition, the material will stop rattling when exposed to strong winds. To obtain a tight fit, the edges of the roofing material can be slightly bent upward.
The purpose of the roof ridge
Another component for metal tiles is the ridge. A ridge strip is necessary to bridge the joint between sheets of roofing material. Such a joint is formed along the ridge line when connecting the slopes. The ridge is necessary to prevent the penetration of moisture under the roof, various debris, birds and insects. In addition, it is an element of the ventilation system - it supplies air through the ventilation gap under the sheets of metal tiles. This ensures ventilation of the roof components.
There are round and straight ridge strips. The first type requires the installation of conical or flat semicircular plugs.
During the installation of the ridge strip, gaps inevitably appear between the ridges of the roofing material and the fastening shelves. Manufacturers of metal tiles advise sealing them with insulation. However, this approach impairs ventilation. To eliminate this problem, you can install auxiliary pitched or ridge point aerators.
The sealing material is glued to the ridge strip or roofing sheets. Next, install the bar, securing it with self-tapping screws to the top of the wave. Fixation can also be done through the lathing.
The extension of a straight ridge is done by an overlap of 10 cm. The connections of the round ridge strips are made using stamping lines.
Some information about valleys
The complete set of metal tiles with valley strips is necessary to seal the internal corners of the roof. They are a kind of gutter-tray, which is formed inside the corner of the roof along the slope. During the operation of the roof, it will support very large loads resulting from the accumulation of snow precipitation, as well as during heavy rains.
The lower valley has wide bent strips, the angle of which is determined by the conjugation of the slopes. Its installation is carried out before laying the metal tiles.
The planks are fastened to a continuous sheathing assembled from 150×25 mm boards. First of all, waterproofing is laid on the sheathing, after which the lower valley strip is secured with self-tapping screws every 30 cm. In this case, the individual elements are joined to an overlap of 10 cm.
If at the junction of the slopes there is an almost flat angle, it will be somewhat more difficult to seal it. For sealing, you can use porous insulation.
After the sheets of metal tiles are laid, another plank is installed over the formed joint of the internal corner - the upper valley. It is necessary to get rid of water from the inside of the roof corner. The plank also makes the joints presentable. In this regard, the material from which the upper valley is made must have a polymer layer of the same color as the metal tile sheets.
The upper valley is placed on the end of the inner corner and secured with self-tapping screws so that they do not pass through the middle of the lower valley strip. Otherwise, the tightness of the connection will be compromised and the risk of leaks will significantly increase. The gaps formed between the top strip and the roofing are covered with porous insulation.
Junction strips are an indispensable accessory
Such components for Monterrey metal tiles are installed where joints between the roof and other surfaces are formed - a chimney, a wall, a ventilation shaft and parapets.
Based on the locations in relation to the sheets of roofing material the abutment strips will be installed, they can be upper and lower. The bottom strip is made in the form of a corner with inverted longitudinal edges, which makes it possible to qualitatively fix the element in a wall made of concrete or brick. The top bar has rolled edges.
Both types of junction strips are used in places where sheets of metal tiles meet the edge. To obtain maximum joint tightness, internal and external aprons are created using such strips.
The contour is made in this way:
- Lay a layer of waterproofing, making sure that it extends more than 5 cm onto the pipe wall. The sections are attached to the pipe using adhesive tape.
- Proceed to installing the inner apron from the bottom of the pipe. The lower junction bar is applied to it, and a line is drawn.
- Along this line, a slightly beveled upward groove is made to a depth of approximately 1.5 cm. At the same time, make sure that all actions are carried out with the utmost care so as not to damage the seams in the brickwork. Making grooves between bricks is strictly prohibited.
- After this, the curved edges of the internal abutment strips are inserted into the groove, and the seam is sealed with a heat-resistant sealant.
- From below, under the inner apron, a “tie” is placed. It can be connected both to the valley and to the cornice. This element will allow water trapped between the apron and the roofing to flow down the slope.
- The planks are fastened to the sheathing and pipe walls using self-tapping screws.
- In the same way, the abutment strips are secured to the side and top of the pipe.
- Roofing sheets are installed on the inner apron.
- The upper and lower abutment strips are fixed in the same sequence. The external apron, by and large, has a decorative purpose and is necessary to hide the cuts of metal tile sheets.
The connection to the wall is made in the same way:
- Place the waterproofing material on the wall 5 cm upward.
- Place the top strip on the wall and make a mark along its top edge. After that I make a groove along it.
- The upper edge of the adjacent strip is inserted into the groove, after which the groove is sealed with sealant.
- Take self-tapping screws and use them to sew the bottom flange of the plank to the sheathing.
- The gap between the plank and the roofing material is closed with a sealant.
Snow guards
Accessories for metal tiles such as snow retainers are barriers to prevent snow and ice from falling off the roof.
Snow guards come in tubular, lattice and corner types.
Tubular products are brackets that are attached to the roof. Two rows of pipes are passed through the holes in them. This type of snow retainer is used most often.
Lattice types also have brackets, between which there are not pipes, but lattice elements made of pipes or angles.
Corner barriers are made in the form of rigid steel curved corners. Used in places where slopes have a slope of up to 30°.
Installation of tubular snow retention systems is carried out in the following sequence:
- Calculate the placement of barriers on the roofing material. This must be done at the stage of installation of the sheathing.
- The brackets are fastened at the bottom of the wave using self-tapping screws. The gap between the brackets varies and ranges from 50 to 100 cm.
- Pipes are threaded through the holes in the brackets, after which they are terminated with plastic plugs.
- If the length of the slope exceeds 550 cm, then install a second row of snow barriers, maintaining a distance of 250-350 cm from the first.
The same method is used to install lattice systems.
Corner snow guards are mounted in this way:
- An underlay carpet is installed on the sheets of metal tiles, and the fastening is carried out at every second top of the wave.
- The snow retainer is attached to the lining corner using long self-tapping screws. They are screwed through the wave, at its highest point.
- If required, install an additional row of barriers.
Finally, it is worth noting that, despite the high price of a larger number of components for metal tiles, it is advisable not to save money on them. If you use high-quality additions, this will not only give your building an ideal appearance, but will also make the roof as durable as possible, so that during its operation you will spend a minimum of time on its maintenance.
Metal roofing is a modern and popular solution, easy to install and affordable. The material has good performance characteristics and can be used on roofs of various configurations. Compliance with installation technology allows you to create a durable roof that provides a high level of protection of the under-roof space and premises from wind, cold and precipitation. The installation of metal tiles should be carried out by qualified specialists to ensure the best results. The process of laying this material has some distinctive features. When arranging such a roof, you need to decide in advance on the type of material and insulation.
Metal tiles are most often used for roofing Source orgtorg.org
Online roofing calculator
To find out the approximate cost of different types of roofing, use the following calculator:
Cold or warm roof
There are two types of roofing using this material, which differ in their characteristics. Cold roofing does not use insulation; it is suitable for cases where insulation can be laid in the attic floor. Warm roofing is done in cases where the living space is located directly under the roof.
Cold roof.
Two layers of materials are used - waterproofing (to protect the interior from possible condensation) and metal tiles. Both layers are separated from each other by counter-lattice and sheathing, and ventilation is provided at the junction of the slopes. For waterproofing, PVC or a thick film is used; the material should not be fully tensioned; the film should sag by about 25 mm, which improves moisture drainage. The waterproofing layer is attached to the rafters and fixed under the sheathing.
It is used in houses where the attic space will not be used as a living space Source proroofer.ru
Warm roof.
The basis of this type of construction is insulation, which additionally performs the function of sound insulation. For this, various types of insulation can be used. The thickness of the insulation depends on the characteristics of the building and the climate of the region, generally its layer is at least 15 cm. Another important indicator of insulation is fire resistance. Thermal insulation is located in the space between the rafters; a vapor barrier layer is used below the thermal insulation and waterproofing. Small gaps are made between the layers to ensure ventilation. All layers at the same time must be sufficiently dense (so that there are no voids where moisture accumulates) and not thick (so as not to interfere with ventilation).
This scheme is used to arrange a warm room under the roof Source remoo.ru
When purchasing materials, it is necessary to maintain the cross-section of the boards so that repairs will not be necessary in the near future. To equip the roof, metal roof tiles, additional elements, boards, screws and other consumables are purchased. The price of the structure will depend on the type of coating chosen, insulation, size and shape of the roof. The average cost of one meter of roof is 1-1.5 thousand rubles. Counting the amount of materials should be left to qualified craftsmen.
The shape of the roof plays an important role in determining the price Source oooarsenal.ru
On our website you can find contacts of construction companies that offer turnkey roof design, installation and repair services. You can communicate directly with representatives by visiting the “Low-Rise Country” exhibition of houses.
Preparatory work and calculation of materials
At the first stage, all walls are measured and discrepancies are eliminated - the most even frame eliminates the need to adjust the rafters. The lumber must be dried well. Next is carried out measuring materials and amounts to roof plan:
accurate wall length, which will allow you to determine the area of the slopes;
location is determined placement of roof windows, ventilation, chimney and so on.
After this, the timber and sheets are calculated, the amount of this material is determined from the roof area, as well as the established slope angle. In most cases, they make a gable roof with a slope of 35 degrees. The boards for the rafters are determined by the pitch of their installation, the size of the planned roof and its height. Basically, the distance between the rafters is 100 cm. The number of rafters required is determined based on the length of the wall divided by the step, one is added and rounded up. A roof made of metal tiles can be made without additional reinforcement under the rafters. Next, you need to calculate the material for the sheathing, which is mounted with a distance between each other from 35 to 40 cm.
The main purpose of the lathing is to support the frame, which is formed using rafters. Also, metal tiles are attached to the sheathing, waterproofing, and creates natural ventilation.
The metal tiles are fastened to the lathing Source udec.ru
The sheathing can be:
sparse– a certain distance is made between the boards, the step between the mounted boards is determined by the interval of the waves of the tiles;
solid– the boards are attached to each other without gaps, the strength of the frame increases, but more money is required to purchase materials.
Basically, sparse lathing is used, since the metal tile itself is strong and does not require strengthening the frame.
Rafter system, hydro- and thermal insulation, lathing and angle of inclination
Installation of a metal roof begins with the installation of a rafter system.
The process is carried out as follows technologies:
for anchor bolts or studs attach the mauerlat;
are installed rafters on the support beam, fixed with corners, from above they are cut at an angle and connected in pairs by crossbars and steel strips.
If the roof is high or has a large area, then a ridge beam is installed, the rafters are attached above it and everything is pulled together with corners.
A high roof requires additional installation of ridge beams Source krsk.au.ru
Almost always, the roof is insulated with special materials, which increases its performance characteristics and functionality. The support for the insulation is the sheathing, and the top is covered with waterproofing. For the lathing, wide boards are used, the distance between the first lower strips is up to 15 cm. Fastening to the rafters using two nails to create the most reliable base for metal tiles.
The roof arrangement scheme is quite complex Source pinterest.com
The installation of metal roofing is carried out with acceptable standards for the angle of inclination. At the same time, the angle of inclination determines other indicators of the roof, such as the type of metal tile, frame design, and the weight of the roofing pie. The greater the slope, the more materials will be required due to the increased area of the slope, while the windage of the structure increases. The optimal angle is 22 degrees, the minimum is 14 degrees; if you make it smaller, then it is impossible to use the attic space and the necessary strength of the entire structure is not ensured.
Installation of metal tiles
The metal tiles are attached to the sheathing with special roofing screws, which have a soft lining; they are screwed into the cavities of the waves. Some types of tiles have hidden fastenings; in this case, self-tapping screws with a press washer are used. The screwing force must be optimal: if the screwing force is insufficient, moisture will get under the screw and lead to corrosion; if you screw it too tightly, then the gasket will deform and its seal will be compromised.
Video description
The video will show you how to install metal tiles:
There are mandatory roof installation rules:
before When fastening metal tiles, you need to check the reliability and symmetry of the installed sheathing;
screws must be screwed in in the bottom wave of the sheet, inserted only perpendicular to the board;
overlaps are connected using shortened screws in rising waves;
fastening of sheets begins from the lower left corner and rises up.
Self-tapping screws are screwed into all the waves around the perimeter of the slope, inside in a checkerboard pattern.
Additional elements and ventilation
Installing a metal tile roof over a wooden sheathing involves the use of various additional elements. These are special products that hold together different parts of the roof, making it as safe and easy to use as possible.
To make the roof look complete and not be afraid of moisture, it is supplemented with protective materials Source bta.ru
These include the following elements:
cornice strip– made from the same material as metal tile sheets, used to protect front boards from possible getting wet during precipitation;
snow holders– protect against falling snow masses from the roof;
junction strip– used to strengthen the joints of sheets with the surfaces of ventilation shafts and furnaces, parapets, walls;
end strip– protection of the outer parts from moisture, prevents breakdowns from high wind loads;
horse- is a bent sheet that connects metal tiles at the fractures of the slopes.
Given the design features, it requires good ventilation of the internal space. The type of ventilation depends on the type of roof chosen - cold or warm. Having installed a warm roof, you should prepare for the fact that there may be some problems with air exchange. The air will flow out in waves through the installed skates. In this case, air exchange may stop as a result of the formation of an ice crust in cold weather. It appears in the internal space due to strong temperature changes. Therefore, this option is considered not the best.
Video description
Preparing the roof for installation of metal tiles begins with sheathing:
When installing a cold roof, you can create better ventilation. Pipes are installed that lead from the attic through the roof to the outside, and dormer windows are made on the slopes. This type of ventilation entails additional waste, but is very reliable.
Conclusion
The installation of a metal roof has its own characteristics and advantages. The material is durable, light and hardy. But its installation requires experience and knowledge, compliance with technology and certain requirements. It is very important to adhere to all norms and standards, which will allow you to achieve high-quality results. For greater safety and convenience, special additional elements are installed on the roof.
Additional elements for a roof made of metal tiles are mandatory components for arranging the roof covering. They perform various protective functions, for example, preventing dust and moisture from penetrating under the roof and ensuring tightness of junctions. They are used to decorate gable edges, cornices, ridges, valleys, and passages for communications. For more complex roofing structures, a large number of additional elements are used, but for a simple gable roof you will only need cornices, gable strips, and a ridge.
In this article
Types of additions for metal roofing
Additional roofing elements made of polymer-coated metal tiles are usually matched to the color of the roofing itself. The types of additions and their quantity depend on the complexity of the structure, the roof components, its shape, the presence of a water drainage system, and the operating conditions of the under-roof space.
Additional elements of the cornice
For high-quality performance of the eaves of the roof, drip edges and eaves strips are used as additional elements. The eaves strip is attached under the waterproofing layer on the sheathing above the mounting brackets designed to fix the drainage system. In order for the roof to serve for a long period without icicles or icing, it is necessary to ensure ventilation of the roof structure with an air flow and be sure to provide high-quality drainage for condensate.
The main task in the eaves of the roof is solved by a perforated ventilation strip, and soffits are solved by special perforated sheets for filing the eaves. Equipped protection for the intake holes in the eaves of the roof, made of breathable materials, prevents snow, leaves, and birds from getting under the structure. A specialized additional element – a drip tray – is responsible for the removal of condensate.
Ridge knot
Ridge strips are installed on a metal roof at the very last stage of roofing work. During the installation process, it is imperative to maintain the necessary gaps for ventilation, and place sealing material between the tiles and ridge. The ridge strip is attached with an overlap, which should be about 10 cm, screws are also screwed in in increments of 10 cm.
A ridge beam is usually nailed along the top of the roof in increments of 50 cm. Sheets of metal tiles are connected underneath it, but loosely, leaving a gap of 20-25 cm. To protect the roof from precipitation, a mesh aero element is additionally mounted.
Chimney, ventilation pipes
Particular care must be taken to install roof windows on a metal roof and arrange an exit for the chimney and ventilation pipes. An “apron” is made around the pipes twice: the first time before laying the tile sheets, the second time directly on them - and a continuous sheathing is made.
Initially, a groove is installed along the perimeter of the pipe, in addition to the masonry joints. Sealing in the area adjacent to the pipe sheathing is carried out with thick tape. “Aprons” are cut out of a smooth sheet of roofing, their width should be more than 20 cm, and they are secured with self-tapping screws to the sheathing or pipe. The upper part of the strip is inserted into the groove.
Important! To prevent possible penetration of water into the roof structure, it is not recommended to install the upper “apron” into the cut of the metal tile.
Additional components for the valley
Additional sheathing is installed in the valleys, gluing is done with tape (double-sided), then an “apron” of the valley is made from sheet steel (galvanized) with a polymer coating. The overlap of the sheets is 15 cm, the width of the gutter is 100 cm (50 cm in each direction from the axis). The overhang of the metal tile sheets over the gutter is 8 cm. The cuts at the ends of the valley abutment sheets are cleaned with specialized gaskets on a synthetic basis. In order for the valley to have a neat appearance, as well as to prevent the accumulation of debris, the foliage of the valley is additionally provided with an upper protective cover.
This type of cover protects the end part of the roof, prevents precipitation, leaves, and snow from getting under the roof, and prevents deformation of the roofing and strong winds from tearing off sheets of metal tiles. The end strip is subject to quite strong loads from the wind, so the shelves are additionally equipped with several stiffening ribs. It is recommended to fasten the end strip to the tile sheets from above every second and third wave. The fastening step on the pediment side should be about 70 cm, because this side is clearly visible. On the top of the ridge, it is necessary to connect the end strips of the slopes to each other.
Arrangement of ventilation and passage components
Ventilation outlet
To ensure high-quality air exchange, ventilation outlets are installed in each span of the rafter system. If there is an uninsulated area under the roof - a “cold triangle” - then you can make one ventilation system outlet for every 60 square meters of roof. To install such extensions, holes are made in the metal tiles and secured along the edges of the holes using self-tapping screws. If the ventilation outlet package does not include silicone sealant, it must be applied.
Sewer outlet
The sewer outlet (a corrugated pipe is used) is connected to the riser. To install the walk-through component, a piece of shingle sheet is cut out on the roof. After laying a layer of waterproofing, sealant, and sealing material, the sewer outlet is installed in the passage component.
Output for electrical cables, antennas
To seal the joints of cables, antennas, and chimneys, specialized antenna outputs are provided. At such an outlet, a rubber cushion is pre-cut, its diameter is made 20 percent smaller than the diameter of the passing pipe, onto which it is stretched. The base of the exit is given the appearance of a metal tile profile. It is attached to the roofing using self-tapping screws, after being lubricated with silicone-based sealant.
Installation of additional components
The installation of a metal tile roof does not end with the installation of the roof covering. Additional work is carried out in the following order:
- The ridge profile is installed, which is attached with roofing screws along the ridge connection to the sheathing.
- Valleys and other valley products are fixed.
- Pediment and cornice overhangs are equipped with protective strips from wind and moisture. These structural elements are covered with soffits.
- The drainage system is being installed, lightning protection and snow holders are being installed.
Remember! If roofing work, in particular, the arrangement of the roofing pie, is carried out in accordance with all established rules using additional elements, the operational period of a metal tile roof can reach 30 years.
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In order for the roof to effectively serve for decades, the joints of its elements are covered with special metal parts. They not only protect the roof from leaks and premature wear, but also give its appearance a complete look.
Additional elements for metal tiles are considered an essential component of the roof structure. They are necessary to give the junctions proper tightness, prevent moisture from penetrating under the roof, etc. Thus, these elements solve the following problems:
- increase the reliability of fastening the material in places that are difficult to articulate;
- they decorate the roof, masking unaesthetic joining seams and hiding the ends, making it visually attractive;
- protect the house from moisture and dust from outside;
- provide the necessary tightness;
- give the roof the required performance qualities.
There is a wide range of these products on the market, which allow you to install a roof of any complexity. In addition, the cost is acceptable for almost any developer.
Types of additional elements
Components for metal tiles are quite varied. These are various strips designed to decorate the ridge, cornice, valley, internal corner, ebbs, etc. If the roof is complex in design and does not fit into certain standards, you can always order products specifically for this model and size range, simplifying the assembly of individual roofing components.
Additional elements for metal tiles are usually made of galvanized steel with or without a polymer coating, painted. They differ significantly in price, which allows you to save some money with the right approach without compromising the quality of the coating. For example, when decorating a lower valley, you can buy a galvanized product, which is much cheaper than one coated with polymer, since such a part is installed under sheets of metal tiles, and they are practically invisible. However, the part located on top must have an anti-corrosion polymer coating in the color of the base material. In this way, the seams will be securely and skillfully “hidden”, and the house will be airtight and warm.
The device of the cornice unit
Eaves strips or droppers for metal tiles are designed to protect the rafter system from moisture penetration and other external influences. The drip cap covers the lower part.Metal tiles and components for them of a certain brand are made from steel sheets with the same polymer coating. In practice, a cornice strip is nothing more than a metal casting with a special bend of a certain configuration. This form contributes to a more efficient fulfillment of their intended purpose - the safe removal of moisture that has formed under the roofing into the gutter.
Precipitation and temperature changes usually lead to the accumulation of moisture on the vapor barrier film. If you neglect the need to install a drip, then it will roll down and fall on the wooden supporting structure. Exposure of wood to moisture leads to the formation of fungus and mold, which over time destroy the structure of the wood.
Installation of drip line
The design of the cornice strip has two bends. When unfolded, the plank measures 10x4x1 cm, with each ebb having a length of 2 m.
Installation of the drip line begins after installing the gutter brackets.
- It is fixed to the front and cornice strips, increasing the ebbs with an overlap, starting from 20 cm. The overlap is necessary to prevent their vibration in strong winds.
- At the junction of two droppers, additional stiffeners are cut off.
- Fastening is carried out using self-tapping screws or nails in increments of 20 cm.
- If there is a protective film on the eaves strips, remove it before installation.
Attention
The drip cap must be fastened with tension to ensure a tight fit and prevent moisture from even the slightest opportunity to penetrate inside.
Along the eaves overhang, especially when using sheets with a high profile, it is also recommended to lay an aero element comb. Thanks to the lattice design, this element provides ventilation of the under-roof space and protects against the penetration of birds.
Ridge unit device
The ridge for metal tiles is one of those most important components of the roof on which its normal functioning depends. In fact, this is the main channel through which ventilation of the roof structure passes. On the one hand, it conducts excess moisture from under the roof, and on the other hand, it does not allow street dust and debris to pass through.
Types of ridge designs
Another function of the ridge strip is decorative - this is the “last point” in the aesthetic perception of the roof being built. Just as the roof has different shapes, so do the ridges differ in appearance. Let's note the most common ones.
- Semicircular. Basically, this ridge frames the joints of the slopes of two- and roofs. At the end parts of the semicircular structure of the ridge there are special plugs that trap precipitation and debris penetrating from the outside.
- Rectangular. This type is suitable for anyone. In this case, there is no need for plugs. This model costs less than the semicircular one.
- Decorative narrow. This element is more decorative than protective. Most often it is used in the construction of structures such as spiers and gazebos.
- T and Y-shaped. These are auxiliary parts for rectangular skates, through which they are fixed to each other.
Skate device
The ridge for metal tiles has two components:
- ventilation bar;
- seal.
The role of the protective layer is played by the seal. Its poor installation or deformation can lead to roof leaks. Seals also come in several types:
- Profile. Its main component, polyethylene foam, allows the use of a sealant for roof ventilation. It allows air to pass through perfectly, but not water. Another advantage of this material is its ability to adapt to the roof’s configuration, thereby providing excellent sealing.
- Universal. It is made of polyurethane film and works as a filter: it does not allow dust and debris to pass through, but creates barriers to air penetration under the roof. It is easily mounted on a self-adhesive base.
- Self-expanding. This seal is made of polyurethane foam, which is impregnated with a polymer, mainly acrylic.
Ridge installation
The construction of the skate is carried out by two people in several stages.
- Check the top edge of the junction. It should be fairly level with a height difference of no more than 5 cm.
- It is imperative to install seals in the ridge grooves.
- If a semicircular version is mounted, plugs are required on both sides.
- The ridge strips begin to be attached from the ends. The ridge is placed flush with the outermost sheet of metal tiles. Even the slightest distortions or deviations of the additional element in relation to the axis should not be allowed.
- The planks are installed with an overlap of 5–10 mm.
- For fastening, self-tapping screws equipped with a rubber washer are used.
The reliability and quality of operation of the future roof largely depends on the reliable fastening of the ridge strip.
See how it fitsmetal tiles and accessories for them in practice.