Additional elements for metal roofing. Description and characteristics of metal roofing elements

Additional elements for roofing made of metal tiles are mandatory components of the roof covering. They serve to give the junctions the necessary tightness and prevent atmospheric moisture, dust, all kinds of debris, insects, etc. from entering under the roof. Components (additional) parts are used to decorate the ridge, cornices, edges of gables, valleys, internal corners, and pipe passages. For complex roofs you may need a large number of accessories, but for simple ones - only a few items. For example, for a small gable roof, a ridge, gable and eaves strips are sufficient.

Let's look at the types of additional parts for metal tiles, their functions and installation methods.

Extensions (components) are galvanized strips that are installed at roof joints and transitions. The length of the products is usually 2 m, the thickness of the steel sheet is 0.4-0.7 mm. The width may vary, depending on the dimensions of the mounting shelves used.

Extensions can have a polymer coating in the color of the metal tile, which slightly increases their cost, but increases their decorative effect.

As a rule, when designing joints that are “in plain sight”, for example, ridges or upper ends, products with a polymer layer are used. They fit perfectly into the overall appearance of the roof, matching the color of the tiles. But decorative value does not matter when covering joints located under sheets of metal tiles.

For example, for lower valleys it is more practical to use ordinary galvanized strips without a colored coating. This will save money and at the same time achieve the necessary tightness, but not overpay for decorative elements, which will one way or another be hidden under the sheets of tiles.

The following types of additional elements are used for metal tiles:

cornice strip;
end (wind) strip;
skate;
valley (upper and lower);
junction strips;
snow retainers.

Let's take a closer look at each of them.

Element #1. Cornice strip

Cornice strip is a steel corner designed to decorate the lower part of the roof along the cornice. Serves to protect the frontal (eaves) board from moisture and to drain water that has entered the under-roof space into the gutter. Another function is to give the cornice line a finished look.

Installation of the strip is carried out before the installation of metal tiles, but after attaching the drainage system. The mounting shelf is fixed to the sheathing on top of the gutter holders. Fastening elements are galvanized self-tapping screws, screwed in every 300 mm.

To decorate the entire length of the cornice, as a rule, several cornice strips are used. They are connected to each other by inserting one strip into another with an overlap of 50-100 mm.

How to fix the eaves strip and bring it into the gutter, watch the video:

Element #2. End strip

The end (pediment) plank also has the form of a corner with mounting shelves. It is installed along the overhangs on the gables to protect the ends of the sheathing and the under-roof space from water, litter, insects and birds, and wind exposure.

The end strips are fixed at the final stage of roofing work, on top of the metal tiles. Installation is carried out along the overhangs of the gables from the bottom up, while overlapping the end edges of the roofing sheets. The planks are secured to the end board with self-tapping screws in increments of 0.5-0.6 m. The overlap along the length is 100 mm.

It is necessary that the end strip is in contact with the upper ridges of the metal tile, overlapping them. This blocks the access of moisture under the sheets of tiles, and also eliminates metal rattling during gusts of wind. To ensure a tight fit, it is possible to bend the edges of the tiles upward.

The classic method of attaching end strips is shown in a short video:

Element #3. Horse

The ridge strip covers the joint between the sheets of metal tiles formed along the ridge line connecting the slopes. Serves to protect against moisture, debris, insects and small birds getting under the roof. It is also part of the ventilation system, starting air movement in the ventilation gap under the tile sheets. Due to this, the roof elements are ventilated.

Ridge strips can be straight or round. Straight ones have a triangular or trapezoidal cross-section, and round ones have a semicircular cross-section. Round planks require the installation of plugs - flat semicircular or conical.

When installing a ridge strip, gaps are formed between its mounting flanges and the ridges of the metal tile. Manufacturers of metal tiles recommend covering them by filling them with a sealant (universal, profile with holes or self-expanding). However, this solution worsens the ventilation capabilities of the ridge, partially blocking the exit of air from the under-roof space. The problem can be solved by installing additional pitched or ridge point aerators.

The sealant is glued (as a rule, most of them are equipped with a self-adhesive surface) to the ridge strip or sheets of metal tiles. Then the bar is mounted, fixing it with self-tapping screws through the wave into the upper ridge. Fastening can be done through the lathing (this option is the most reliable) or only to metal tiles.

Extension of a straight ridge is carried out by overlapping by 100 mm. The round ridge strips are joined along stamping lines.

Principle of installation of ridge strips:

Element #4. Valley planks

The endow is a kind of gutter-tray formed in the inner corners of the roof, along the line of connection of the slopes. During the operation of the roof, it is subject to a huge load associated with accumulations of snow masses and storm flows. Therefore, to seal the internal corners of the roof, two valley strips are used - lower and upper.

The lower valley plank is a corner with wide shelves bent at the angle where the slopes meet. Its installation is carried out before the installation of tile sheets.

Mount the plank on a continuous sheathing of 150x25 mm boards, packed on both sides of the joint of the internal corner to a width of 300 mm. First, waterproofing is laid along the sheathing, then the lower valley strip is secured by screwing in self-tapping screws in increments of 300 mm. To join the planks, they overlap by 100 mm.

If the junction of the slopes forms an almost flat angle, it is more difficult to seal it. In this case, it is advisable to use an additional layer of waterproofing.

For sealing purposes, a porous sealant is also laid between the lower valley strip and the tile sheets.

After installing the metal tile sheets, the joint of the internal corner is covered with another plank - the upper valley. It serves not only to drain water from the inner corner of the roof, but also gives the joints a decorative appearance. Therefore, the upper valley strip, as a rule, has a polymer coating that matches the color of the metal tile used.

The upper valley is placed at the joint of the inner corner and secured with self-tapping screws so that they do not pierce the middle of the lower valley plank. If this happens, the sealing of the joint will be broken, and accordingly, the roof will leak at the point of the breakdown. The gaps between the top strip and the metal tile profile are filled with a porous sealant.

The sequence of installation of the upper and lower valley strips and the nuances of their fastenings are shown in the video:

Element #5. Junction strips

They are used at the junctions of the roof with other surfaces, for example, with a chimney, wall, ventilation shaft, parapet.

The junction strips, depending on their location relative to the roofing sheets, can be upper or lower.

The bottom strip has the shape of a corner with bent longitudinal edges, which allow you to securely fix the part in a brick or concrete wall. The edges of the top bar are rolled.

Both options for junction strips are used when joining metal tiles to a chimney (bypass). To completely seal the joint, internal and external “aprons” are formed using these strips. The bypass arrangement is performed as follows:

Apply a layer of waterproofing 50 mm (minimum) to the walls of the pipe, the sections are fixed to the pipe with adhesive tape.
Installation of the internal “apron” begins from the bottom of the pipe. The lower junction strip is applied to the pipe wall, and the line of its upper edge is marked.
A groove about 15 mm deep is cut along the intended line so that it turns out to be slightly beveled upward (to create a barrier from moisture). Act carefully so as not to catch the seams in the brickwork; cutting grooves in the seams is strictly prohibited!
The bent edges of the internal junction strips are inserted into the groove and the connection is sealed with a heat-resistant sealant.
A “tie” is placed under the inner apron from below - a kind of trough made of a steel sheet with curved edges (flanging). It is led either to the valley or to the cornice. This detail will allow water trapped between the flashing and shingles to flow down the slope.
The planks are fixed to the sheathing and pipe wall with self-tapping screws.
In the same way, the junction strips are mounted first to the side walls of the pipe, and then to its upper part.
Metal tile sheets are mounted on top of the inner “apron” of the contour.
The upper joint strips are secured in the same order as the lower strips. And they are mounted in the same way, with the exception of placing the upper edges into grooves. The outer apron is, to a greater extent, a decorative element that masks the cuts of the tile sheets.

More details on the diagram:

The connection to the wall is done in the same way:

Place the waterproofing on the wall 50 mm upward.
Place a top strip on the wall and mark its top edge. A groove is cut along the line.
The upper edge of the junction strip is inserted into the groove, and the groove is sealed with sealant.
The bottom shelf of the plank is secured to the sheathing and wall with self-tapping screws.
The gaps between the plane of the strip and the profile of the metal tile are filled with a sealant - universal or self-expanding.

You can learn how to install abutment strips from the video:

Item #6. Snow guards

Snow guards are barrier products that serve to prevent snow layers and ice from falling off slopes. They retain snow masses, which can become dangerous for people and animals, and also lead to damage to property (cars, for example).

The following types of snow retainers are used for metal tiles:

tubular;
lattice;
corner.

Tubular barriers consist of brackets fixed to the roof, through the holes of which 2 rows of pipes are passed. This is the most common type of snow guard.

Lattice products also consist of brackets, between which there are not just pipes, but lattice sections made of pipes or angles.

Corner snow barriers are rigid barriers in the form of corners made of bent steel sheets. They are used for roofs with a small slope angle – up to 30°.

When installing tubular systems, proceed as follows:

Determine the position of snow retainers on the roof. This is done first, at the stage of installing the sheathing, since reinforced sheathing is required under the brackets.
The brackets are fixed in the deflection of the tile waves and secured with long screws to the sheathing. The distance between the brackets is 0.5-1 m.
Pipes are installed in the holes of the brackets, the ends of which are closed with plastic plugs. To set the required length, the pipes are connected to each other with bolts.
If the length of the slope is more than 5.5 m, a second row of snow stops is installed, at a distance of 2.5-3.5 m from the first.

The installation of lattice systems is carried out in a similar way, only lattice sections are inserted between the brackets instead of pipes.

To install corner snow guards:

A lining corner is mounted on the metal tile, fastened to every second crest of the wave, which serves for a more durable fit of the snow stop.
The corner barrier is installed on top of the backing corner and fixed to the metal tiles and sheathing with long self-tapping screws. The fastening is carried out through the wave, into every second ridge.
If necessary, install a second row of snow guards.

We invite you to watch a video on installing snow guards:

It remains to add that, despite the high cost of most components for metal tiles, it is not worth saving on them. The use of high-quality additions ensures a decent appearance and durability of the roof, which allows less frequent repairs during operation and simplifies maintenance.

Additional elements for metal tiles allow for correct and reliable installation of the roof and reliably ensure the tightness of the roof. All additional elements can be divided into 3 groups:

Flashings: molding elements for arranging various types of connections.
Passage units: shaped elements for hermetically sealed passage through roof structures of ventilation ducts, antennas, as well as various hatches and light elements.
Products to ensure the safe operation of the roof: snow guards, walking bridges, ladders, etc.

The first group is flashings, running products of various types, made of galvanized steel sheets with a thickness of 0.5 to 0.7 mm and a length of 2 meters.

Additional elements are used mainly with a polymer coating of the same color as the profile sheets of metal tiles. The number and types of flashings depend on the complexity of the roof configuration, on how complex the metal roofing units are, on the presence of a drainage system and the conditions of use of the under-roof space.

Eaves part of the roof

For the correct installation of the eaves of the roof, eaves strips and drip edges are used. The eaves strip is attached to the sheathing under the waterproofing layer and on top of the brackets for attaching the drainage system. A necessary condition for a long-lasting roof without ice and icicles is to ensure an air flow to ventilate the roof and remove condensate.

The first problem in the cornice part is solved by a special ventilation perforated tape and perforated sheets of cornice lining (soffits).

Protecting the intake openings with breathable materials allows you to protect the eaves of the roof from the penetration of birds, leaves, and snow sweeping.

The second task - condensate drainage - is solved by the drip strip.

Ridge part of the roof

Additional elements for roof ridges are represented by ridge strips of three types: Straight ridge, figured ridge and semicircular ridge. The straight ridge is designed for roofs of a simple configuration and to protect the joints of metal tile sheets on the ridges and hips of the roof. The figured skate has additional stiffening ribs and an air chamber for ventilation. The semicircular ridge also allows for ventilation of the roof and is more durable. The ridge element must cover the joint of metal tile sheets on the outer edges of the roof, be it the main ridge or the hips. When choosing and installing skates, you should pay attention to the need to remove air vapors. Ridge strips are laid over the joints of metal tile sheets and over the end strips. Installation of ridge elements should begin from the light side with the prevailing wind direction in order to position the open joints of the ridges in the direction of the wind. This will reduce noise and increase the life of the roof. Joints of simple ridge strips should be made with an overlap of at least 150 mm, and joints of semicircular ridges should be made along stamped grooves. The ends of the skates are covered with special end caps.

Additional products for the construction of valleys

In the valleys (internal corners on the bends of the roof, also called valleys), additional sheathing is installed, glued with double-sided tape, and then a valley apron is made of galvanized sheet steel with a polymer coating. The overlap of steel sheets is 150 mm. The total width of the gutter is 1000 mm, 500 mm from the axis in each direction. The overhang of metal tile sheets over the gutter is 80 mm. The end sections of the valley junction sheets should be protected with special synthetic gaskets. In order to obtain a neat appearance of the valley and prevent the accumulation of leaves and debris, the valley is protected with an additional top cover.

End (wind) strip

This type of flashing protects the end part of the metal tile roof from direct precipitation, blowing leaves and snow into the under-roof space, and also prevents deformation and tearing of metal tile sheets under the influence of wind. The end strip experiences a large wind load, so the shelves have several bends - stiffeners. The end strip should be attached on top of the tile sheets every second or third wave. On the gable side, a fastening pitch of about 700 mm should be observed, since this side is clearly visible. On top of the ridge, the end strips of the slopes need to be connected to each other.

Junction strips

The junction of metal tiles to wall structures and the passage through the roof of ventilation shafts must be protected with aprons. The upper part of the apron must extend onto the wall by at least 150mm. The junction strips have different profiles and are selected individually for the assigned tasks. Other shoulder straps. When creating roof slope fractures, a sloping strip with a drip is used. The bend angle of the bar depends on the angle of the slope fracture. The length of the shelves of such a strip is not less than 150 mm on the side of the tile sheets and not less than 80 mm on the drip side.

Passage nodes

The second group of additional elements are parts for the passage of communications. The use of these elements allows antennas and ventilation outlets to be hermetically passed through the roof. The advantages of use are the durability of the connections, since under the influence of wind load the elements become loose and a home-made connection is more susceptible to destruction and leaks. Instructions for installing communications passage elements are given in the accompanying documentation.

Roof safety devices

The most commonly used safety devices are snow guards. Snow melts off metal tiles like an avalanche, and in regions with stable snow cover, snow retainers should be used. There are two types of snow guards. Tubular and sheet. Tubular snow guards consist of two brackets and two pipes. Products are made of galvanized steel, both with and without polymer coating.

A more economical option for a snow retainer is a sheet one, made from a bent sheet.

Installation of snow retainer brackets should be carried out in the second or third wave of metal tiles from the eaves. Fastening is carried out in the existing sheathing on top of the metal tile wave. Installation of snow retention elements should be carried out using synthetic gaskets, which are included with the snow retention system. Roof fencing elements that prevent people from falling are required when the eave height is more than 7 meters and the slope is more than 12%, or when the height is more than 10 meters and a lesser slope. The fencing brackets are attached to the existing sheathing on top of the metal tiles through a universal gasket at the intervals specified in the product instructions.

Stairs are necessary when there is a difference in roof heights and in some cases for public buildings and apartment buildings for climbing to the roof. The design and fastening of stairs should be selected with the assistance of professionals.

Transitional bridges installed on the roof allow you to safely service the roof, but are not mandatory for use. Mounting kits and mounting instructions are included with all industrially manufactured products.

Additional elements can become a significant part of the budget for a roof, but the use of these elements will ensure the durability of the roof and save on its subsequent maintenance and repairs. We also recommend watching videos on the topic:

In order for a roof made of a modern metal profile to have a neat and finished look, it is necessary to purchase components for metal tiles in advance. These are all kinds of corners, skates and other elements. The components not only make the covering a single whole and perform a decorative function, but also as a result prevent moisture, debris and dust from getting between the profile sheets, forming strong metal roofing units. This means they prevent the destruction of the entire roof over time. About the types of additional elements and their purpose on the roof in the material below.

Types of additional components for metal tiles

Horse

If you are interested in metal roofing elements, then it is worth knowing that the very first of them is the ridge strip. This element is designed to join two roof slopes at an angle and in the same plane. That is, the ridge forms a logical completion of the roof at its very top.

Modern profile manufacturers offer ridge strips in the following shapes:

Radius ridge (semicircular). In most cases it is used on metal tile roofing. Can have a radius from 70 to 125 mm.
Trapezoidal skate. It is universal and can be used on any roof.
Figured horse. It also harmonizes perfectly with any other roofing material.

Important: for a figured and trapezoidal ridge, the offset of one wing can vary between 150-300 mm depending on the roof configuration and the slope angle of the slopes. Moreover, regardless of the shape of the skate, its length is always 2 m.

However, the ridge is not the only main element of the peak part of the roof. To completely complete the ridge assembly, you need to purchase the following components:

T-shaped and Y-shaped adapter. The first one is necessary for connecting the ridge strips on a hip roof, and the T-shaped one is intended for perpendicular connection of the hip roof strips.
Cap for ridge strip. This element applies only to the semicircular ridge. In this case, the plug can have a flat, conical or tent-shaped appearance. Such mesh plugs prevent birds, as well as debris or dirt, from entering the existing space under the roof.
Sealant-backing for metal tiles. Provides a tighter fit of the metal profile to the roof and prevents it from rattling in the wind. In addition, it performs a waterproofing function.

Endova

Such an element of metal tiles is necessary if the roof has a broken configuration. Valley planks are laid in the inner (negative) corners of the roof. Such a fragment of the roof is designed to absorb the flow of precipitation from two adjacent roof slopes and drain it freely into the drainage system. The valley looks like a plank curved at an angle inward. There are the following types of valleys:

Internal (lower). Designed for laying directly on the sheathing before installing the profile sheet. That is, it needs to be placed under the metal tiles. After installation of the roof it will not be visible. At the same time, it is important not to forget that when fixing the lower valley, a substrate for metal tiles should be used.
Outer (upper) valley. It is installed on top of an already installed roof and performs a decorative function. It has the same configuration as the internal additional element for metal roofing.
Figured valley. Acts as a top bar, but at the same time has an attractive appearance. Precipitation flows along it to a lesser extent than along the lower fragment.

Important: like the ridge, the valley strip has a standard length of 2 m.

End strip

It is often also called a wind bar. Such a fragment is attached to the gable part of the roof at the ends. As a rule, the wind strip has the form of a profile sheet bent along the length. The main function of the end strip is to protect the roofing material from possible disruption under gusts of wind. In addition, the wind strip protects the under-roof space from birds entering it and at the same time performs a decorative function. The length of the overhangs of such a plank can vary from 10 to 25 cm. At the same time, the length of the plank itself remains unchanged - 2 meters.

Tip: to visually complete the roof space, you can buy either a smooth wind strip or a more attractive embossed one.

Kapelnik

This fragment, together with the cornice strip, forms a complete cornice assembly. The drip line is mounted along the gable board of the rafter system/sheathing in order to prevent drops of water from entering the tree when rainwater drains into the drainage system. The standard dimensions of the drip are 40-50x100-110 mm with a length of 2 meters.

Cornice strip

This fragment for a metal tile roof is also indispensable in the overall roof structure. In its form, it is a kind of ebb with a bend on it. This strip additionally protects the eaves boards from excess moisture and is mounted on a drip film. As a rule, the cornice strip has the following parameters for the cornice wing - 70x100 mm or 100x150 mm. The length of the product is also 2 meters.

Junction strips

Such roofing components allow you to combine the roofing covering and elements protruding on the roof, such as chimneys, protruding turrets, etc., into a single structure. The abutment strip prevents water from getting between the metal tiles and protruding roof fragments. In addition, such an element performs a decorative function and forms a roof space that is uniform in color and shape.

Snow guards

It is worth knowing that the components for metal tiles do not end with the above. Such a fragment as a snow retainer is no less important. Its main function is to delay the sudden sliding of layers of snow along the tiles to the eaves during its seasonal icing over time. Since the crust of snow can turn into a slightly icy crust under the sun, its sudden descent from the roof with some melting can cause damage to both the profile itself and the drainage system. That is, roughly speaking, if a block of ice slides off the roof, it will not benefit the roof.

According to the form of execution, such elements for metal tiles can be:

Pointed. They can be placed on the roof in a checkerboard pattern over the entire surface of the roof.
Lattice. Simple lattice parts, snow guards, are mounted at the bottom of the slope.
Tubular. They are placed in one line in the lower third of the roof slope.

Advice: you shouldn’t skimp on additional elements for metal roofing. Coating components that are not technically completed will eventually lead to the destruction of the entire coating. And these are more significant costs than purchasing components for the roof.

September 5, 2017

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.

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 number 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

To ensure 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 for 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 gable 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.

From metal tiles. Its functional purpose is to protect the material from wind and moisture penetration under the wooden structure of the roofing pie, as well as to prevent fasteners from becoming loose. When , the end strip is placed over the edge of the waterproofing material secured to the end board.

The correct arrangement of the end strip involves its location from bottom to top (from the cornice to the ridge), followed by fixation with self-tapping screws at intervals of 50-60 cm (read: ""). The resulting difference in the heights of the material ensures that the planks are tightly pressed against the roofing, thereby eliminating the source of noise that occurs due to the contact of the panels with each other during gusty winds.

The overlap of the planks is 100 mm; if necessary, they can be trimmed slightly. To prevent water from getting under the sheets of metal tiles, the end strip must be used to cover the crest of the wave. To do this, you can slightly bend the edge of the covering sheet upward.

Installation of the upper valley

The upper valley strip ensures the drainage of water accumulating at the junction of the slopes in the inner corner. In addition, it is used as a decorative roof decoration. These metal roofing elements are fastened using self-tapping screws so that the fasteners do not damage the waterproofing - this occurs if the screws are screwed in very tightly and pass through the lower valley. A self-expanding seal is placed between the upper valley and the metal tile.

Installing abutment strips

The roof structure can consist of direct and reverse breaks, so special attention must be paid to the continuity of waterproofing in both options.

The gap between the sheathing beams on straight breaks should be minimal, and the break itself should be closed using a sheet of covering pulled forward. Coupling elements can also be used here, for example, . Regardless of the element chosen, a sealing layer is also placed between it and the tiles.

On reverse breaks, the mating element can be an abutment strip for metal tiles to a wall or pipe, which is laid by rolling closer to the lower slope. A layer of sealant is also needed here, which is available from every supplier of roofing materials.

The procedure for connecting to a wall is carried out according to the same scheme as connecting to a pipe, only the waterproofing needs to be removed and raised to the wall surface by 50 mm. To seal the junction, a universal or profile seal for metal tiles is used.

Arrangement of the ridge

Natural ventilation of the under-roof space is carried out by passing air through the eaves to the ridge and the sealant layer outward. Depending on the length of the ridge, the waterproofing film underneath breaks by 200 mm or more. For additional waterproofing, additional metal tile elements can be glued with a special compound. Fastening is carried out with screws to the upper crest of the wave and the sheathing; plugs are nailed to it at the ends.

Rules for installing accessories

If metal tiles are installed, accessories are used not only to create an aesthetic appearance, but also to perform a number of important functions. The main accessories include snow guards, which are attached to the roof slopes and above the attic window openings and provide. The purpose of these elements is to pass through a layer of snow and ice in portions. They can be fixed along one line (“joint to joint”) or in a checkerboard pattern. If the slopes are very long, then it is better to do it in several rows.

They can be fixed at the approach of the wall to the roof or closer to the ridge, as shown in the photo, but in no case on the eaves. As a support, a bracket is installed, a fixed and universal seal for metal tiles to wooden sheathing. The construction of crossing bridges and fences is carried out strictly according to the instructions provided by the manufacturer. For reliable and durable fastening, you need to build a continuous sheathing.

Performing additional roof grounding using a separate bus

The design of the simplest lightning rod system consists of three components:

lightning rod;
down conductor;
ground electrode.

The lightning rod is installed at the highest point of the roof using wooden supports. Making a lightning rod is very simple; you need to take a steel or aluminum rod with a round cross-section with a diameter of 12 mm and a length of 200-1500 mm.

Carrying out roof maintenance after installation

As soon as all installation work is completed, all debris must be completely removed from the roof surface, additional elements of the metal tile roof are processed, cuts, scratches and abrasions are touched up.

After 3-4 months, you need to check the fastening of the screws and, if necessary, tighten them. It is recommended to clean the roofing from leaves, branches and dirt twice every year. To do this, you will need a soft brush and a rag, or even better, direct a stream of water from the ridge to the eaves. After this, the drainage system and drippers for metal tiles are checked (more details: ""), if necessary, cleaned and repaired.

Remember that due to dirt, wood and metal shavings, leaves and branches, which accumulate in large quantities and retain moisture, rust appears on the metal, which leads to the destruction of metal tiles.

Additional elements for metal tiles allow for correct and reliable installation of the roof and reliably ensure the tightness of the roof. All additional elements can be divided into 3 groups:

Flashings: molding elements for arranging various types of connections.
Passage units: shaped elements for hermetically sealed passage through roof structures of ventilation ducts, antennas, as well as various hatches and light elements.
Products to ensure the safe operation of the roof: snow guards, walking bridges, ladders, etc.

The first group is flashings, running products of various types, made of galvanized steel sheets with a thickness of 0.5 to 0.7 mm and a length of 2 meters. Additional elements are used mainly with a polymer coating of the same color as the profile sheets of metal tiles. The number and types of flashings depend on the complexity of the roof configuration, on how complex the metal roofing units are, on the presence of a drainage system and the conditions of use of the under-roof space.

Eaves part of the roof

The first problem in the cornice part is solved by a special ventilation perforated tape and perforated sheets of cornice lining (soffits).

Protecting the intake openings with breathable materials allows you to protect the eaves of the roof from the penetration of birds, leaves, and snow sweeping.

The second task - condensate drainage - is solved by the drip strip.

Ridge part of the roof

Additional products for the construction of valleys

End (wind) strip

Junction strips

Passage nodes

Roof safety devices

A more economical option for a snow retainer is a sheet one, made from a bent sheet.

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 joining 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 cornice strip?

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, such strips are used to create internal and external aprons.

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.

When erecting a roof, you need to think not only about the roofing material itself, for example, metal tiles. You can't do without additional elements. These additions will not only better protect the entire structure, but will also give the roof a finished look. What additional elements are used for metal roofing? How to choose and install them correctly?

Cornice and end strip

Additional elements for roofing made of metal tiles are produced in a large assortment. Some of them play a more decorative role; without others, it is simply impossible to make a high-quality roof. It is the latter that include such additional elements as cornice and end strips.

The products are as follows:

The cornice strip is a steel corner with a slight bend on the outside. The additional element serves to direct wastewater from the metal tiles into the drain. The strip is also necessary to protect the eaves boards from moisture;
End strip. The additional element, like the previous one, is made in the form of a metal corner, only without a bend. Its main function is to protect the space between the metal roofing tiles and the sheathing. Not only raindrops and snow can get into such a gap, but also insects or small birds.

In addition, the described additional elements also play a decorative role. The eaves and end strips give the roof a finished appearance. The dimensions of the described additional elements may vary. The overhang, the outer part, is available in sizes from 10 to 25 centimeters. Moreover, the length of all planks is almost always two meters.

The installation of each element is carried out at different stages of roof construction. The eaves strip is installed even before the metal tiles. The additional element is attached to the sheathing. In this case, if a drain is provided, the strip is mounted on top of the holders of this system. Fastening is carried out using self-tapping screws, in increments of 20-30 centimeters.

The end strip is installed at the last stage of roof construction. These additional metal tile elements are attached on top of the roofing material. Work starts from the bottom up. The step between installation points ranges from half a meter to 60 centimeters. The fastening strip is inserted under the metal tile sheet. In both cases, the planks are laid with an overlap of 5-10 centimeters.

Endova

Many additional elements for metal tiles make installation easier and make the roof more reliable. This is exactly what the valley is considered to be. Similar products for metal roofing are composed of:

Inner or lower valley. The additional element is attached directly to the sheathing and covered with metal tiles on top. It will not be visible from the outside, but its installation should be taken seriously. The lower component is the basis of the entire structure;
Upper valley. The additional element is attached on top of the metal tile. It closes the gap between the sheets of roofing material and plays a largely decorative role;
Figured valley. These are optional elements of a metal roof. They are installed to improve appearance.

The valley is not used on all roofs covered with metal tiles or other materials. Their installation is necessary if the roof has internal or negative angles. In this case, an additional element is necessary to collect and drain runoff from two converging roof slopes.

Horse

This additional element is mandatory. The ridge crowns the entire roof and covers the joints of the metal tile sheets at the top of the roof. The product is available in different variations:

Simple triangular. This type of ridge is considered universal and is suitable for any type of roof. In addition, a simple triangular design is inexpensive;
Trapezoidal. This type of additional element has a large ventilation chamber in the upper part;
Semicircular. This option is most often used in combination with metal tiles. The semicircular ridge has an attractive appearance and provides better air circulation in the under-roof space. But its cost is the highest of all.

The additional ridge element is mounted loosely to the metal tile. There remains a gap between it and the roofing material, which ensures ventilation of the roof. Moisture and insects can get into such a gap. Therefore, the manufacturer recommends using a special seal. It is not advisable to choose a solid version of such a product. In this case, the ventilation of the roof will be disrupted, the rafter system and the metal tile itself will quickly fail. But there is a way out of this situation. If the seal does not have ventilation holes, then additional elements for metal tiles, aerators, are additionally installed on the roof.

Other Addons

To improve the performance characteristics of a roof covered with metal tiles, other additional elements are used. Among them are the following:

Dropper. This additional element is installed before the roof is covered with metal tiles. The main task is to prevent moisture from entering the eaves board and direct it into the drainage system;
Dymniki. The additional element is necessary to protect the pipes from rain and snow getting into them. In addition, it significantly improves traction;
. The additional element is not mandatory, but it can be found often. The snow guard ensures safety. It prevents snow mass and ice from avalanching from the roof slopes.

It’s worth talking in more detail about the last additional element for a roof covered with metal tiles. Snow guards are available in different types:

Spot. They are like a corner. The additional element is attached in a checkerboard pattern at the bottom of the slope. Such a snow retainer is inexpensive, but its holding capacity is lower. Therefore, this option is chosen in cases where there is little precipitation in the region in winter;
Lattice. The most “powerful” additional element for metal tiles of this type. It is a lattice with small cells. The element is installed at the very edge of the slope;
Tubular snow retainer. Also capable of holding large volumes. The additional element is made in the form of two or more pipes fastened parallel to each other. The element is installed at the edge of the slope.

In addition, other products are also used. To improve sealing, abutment strips are used, a special profile is used to protect walls from raindrops, and so on. If pipes are installed on the roof, then aprons are purchased. They provide a safe and reliable passage through the roofing pie. In addition, you can purchase and install various decorative additional elements that will give metal roofs a more attractive appearance.