Any, even the simplest roof, involves the use of special elements that form its joints, kinks, junctions of slopes and areas of junction with walls and gables.

• She is protects from getting wet frontal board of the eaves during precipitation;
• Prevents moisture ingress under the roof and in the interior;
• Attaches completed attractive appearance the whole structure;

Sectional diagram

Device and principle of operation

Cornice strips form a metal protective edge with an anti-corrosion coating that protects the frontal or cornice boards from moisture.

Looking first at the roof, it may seem that this longitudinal element is brought under the edges of the roofing. In fact, its installation is carried out even before laying or. Only after it is strengthened on the frontal or cornice board, it will be possible to start laying facing materials.

Usually, made of the same material as the cladding, it is painted in a color similar to it and protects not only the cornice or frontal board from getting wet, but also prevents water from entering the under-roof space itself.

Cornice device

Drip and cornice strip - what are the differences?

Many mistakenly believe that the eaves and drip are one and the same.

In fact, these are two different bars that perform two different functions.

• The cornice strip protects the frontal board of the cornice from getting wet, and the drip is used to divert water, namely condensate from waterproofing, from essential elements roof structure into a gutter or directly onto the ground. It is especially important in autumn and spring when high humidity air and frequent rains;
• protects the facade of the house from the formation of fungus, mold and washout building mix from brickwork, as well as from rotting wood, while the cornice strip protects the roof itself;
• The dripper strengthens the roof and protects it from air masses , and the cornice strip protects it from aggressive external influences;

Both additional elements can be installed together or separately, but they can't replace each other.

Cornice strip: dimensions

Roof protection strips are made of galvanized steel profile. Manufacturers use for their production the same thin sheets of steel, whose thickness varies from 0.4 to 0.5 mm, as well as for the production of metal tiles.

They are covered in the same polymeric materials, for example, polyester or plastisol, which, in turn, covers the metal tile. In the case of using a composite metal tile, the planks are covered with basalt chips. The approximate length of the element is vaped within 50-60 cm.

Because the bar is, as it were, “planted” on the base of the roof, the required footage is collected from its individual parts.

Installation of the cornice strip

Installation of additional elements attached to the cornice, carried out on an already prepared frontal board, which is nailed with galvanized steel nails to the end parts of the truss system. If the front board is flat, the batten will be much easier to attach.

Installation of cornice strips is carried out in the following order:

• The frontal area of ​​​​the base of the roof is hemmed with a tongue-and-groove board. You can use siding or corrugated board for these purposes;
• Then on the wall of the house support bar installed, which serves as a safety support when filing the cornice overhang;
• Right before the event finishing works eaves the drainage system is equipped with brackets or hooks by attaching them to rafter legs or to the eaves board. In them, further, the gutters of the drainage system will be folded. If the distance between the rafters is the same, it is better to attach hooks to them;
• Lower the first hook or bracket below the continuation of the slope line by 2 cm in order to ensure that water from the roof is guaranteed to enter the gutter.
• Next comes the turn of fixing the cornice strip over the fastenings of the gutters to the frontal board. It is nailed with a step of self-tapping screws of at least 30-35 cm in a checkerboard pattern.
• You can not fasten the strips end-to-end or with gaps between them. Each subsequent bar must overlap, namely, go onto an already fixed element by about 1 cm. The last bar is adjusted in size with a neat cut.
• After completing the installation, you can proceed to the lining of the roof or. And having finished laying the roofing materials, it is worth starting the installation of other additional elements of the roof.

Photo installation of the eaves strip

Cornice fixing

Additional elements

We suggest you familiarize yourself with other types of additional roofing elements:

1. used as a decorative component to mask the joints of the roof cladding with corrugated board. They protect the ventilation gap of the under-roof space and joints from seepage and water retention;
2. end plate protects sheets of metal tiles or corrugated board, covering them at the ends, from strong wind, water penetration under the roof in the area where the roof adjoins the gables, and also prevents insects or birds from getting under the roof;
3. wall plank it is used in areas of adjunction to walls or other planes located vertically.
4. wall straight line protects the joint without strobing with additional sealing;
5. Wall bottom fastened under the facing material, metal tile or corrugated board in the area of ​​\u200b\u200battaching to the wall or to another surface located vertically. On one edge of the additional element there is a hem that prevents the drained water from overflowing over the edge.
6. directs the water flowing from the roof, mainly performing decorative role masking the internal areas of the junction of sheets of roofing material.
7. Lower valley- element used in joint areas negative angles. It protects the place of joining of sheets of metal tiles or corrugated board from seepage of water under the roof;
8. low tide- an element designed to protect the joints of the window and the walls of the building from water penetration;
9. used on various roof breaks. They protect the joint from the introduction of water under the roof space;
10. protect against unexpected avalanche-like descent of snow masses, as well as unintentional falls constituent parts roofing;
11. Corners inside and outside- decorative elements used to mask the joints of internal and outside corners facing material roofs;
12. Ridge aerator- a product used to get rid of excess moisture in the area under the roof;
13. Cap ridge- an important component that prevents the ingress of dirt and moisture under the roof.

Additional elements

The work of all additional elements of the roof together is aimed at maintaining the integrity of the roof and increasing its service life. The absence of any element can, albeit imperceptibly, but extremely negatively affect the design of the house as a whole.

Useful video

Do-it-yourself installation of a cornice strip in the video below:

In contact with

Roof covered with modern metal tiles - practical solution for a private cottage country house or townhouses. Contrary to the beliefs of homeowners, the durability of such a roof is not entirely dependent on the quality of the roofing material. Big influence durability, water tightness, reliability are provided by additional elements used for installation, despite the fact that their area is less than 5% of the roof surface. In this article, we will explain what is wind bar for metal tiles, what it is for, and how it is fixed.

Wind bar - one of the additional elements used for roofing from metal tiles. It is a corner made of plastic or galvanized metal and performs protective and decorative functions. There are the following types of wind bars:

Important! The wind bar is a corner with 2 mounting shelves, the wider they are, the more reliably this additional element for the roof protects the overhang from the penetration of moisture and wind. The installation of the end element is often performed in combination with seals that follow the shape of the waves of the coating for more efficient operation.

Materials, dimensions

For the manufacture of cornice wind strips, materials are used that are highly resistant to atmospheric phenomena, as well as mechanical strength. The service life of a roof made of metal is at least 20-25 years, which means that additional elements should serve no less. The following bars are most often used:

1. Steel. The most popular models of additional elements for protecting the ends and cornices are steel. Galvanized steel, which is coated with a layer of paint, pural or polyester during the production process, withstands water, does not corrode, while it is quite light and strong.
2. Plastic. Polyvinyl chloride is a thermoplastic plastic used for the manufacture of eaves and end strips. The advantages of this material - a light weight and diversity color solutions. However, plastic elements are subject to thermal expansion, in addition, it is not recommended to install a heat cable for roof heating on them.

Please note that the dimensions of the models of the cornice strip for metal tiles are very different. This additional element usually has a length of 1.5-2.5 m, the width of the mounting shelves is 15-30 cm. Steel products are made to order according to the buyer's size.

Functions

Additional elements in the composition of a roof made of metal, depending on the complexity of the design, make up 2-5% of the area, but their importance cannot be overestimated. Installation of roofing without wind strips leads to the penetration of moisture and wind into the rafter frame and, as a result, accelerated wear of the material. The cornice and wind bar perform the following functions:

• Protective. The main task of the cornice strip is to prevent penetration under roofing material atmospheric moisture and cold winds. because of high humidity wooden frame damp and rot, which negatively affects the life of the roof. blowing in attic room cold air increases home heating costs.
• Decorative. The installation of wind slats allows you to neatly and aesthetically sheathe the frontal board, as well as hide the “insides” of the truss system from the eyes. Additional elements are selected to match the color of the metal tile, so the slopes look holistic and harmonious.

Experienced craftsmen say that additional elements for metal tiles can be made by hand. Wind bars are made from sheet metal 0.4-0.5 mm thick. However, homemade trims will not look so neat.

Installation

Wind bars are elements that are simple in design, so the models different manufacturers differ only in the type of coating and the thickness of the metal used. The effectiveness of these devices depends on the correct use. Installation of eaves and end strips is done as follows:

1. Eaves strips are fixed on the eaves board to the flooring of the roofing material. Before installing this additional element, brackets for the gutter are fixed on the eaves. After that, the wind plank with an overlap of 10-15 cm is fixed on the cornice board using nails or self-tapping screws in increments of 30-50 cm.
2. Wind strips are fixed on the frontal board after the roofing is made of metal tiles. They must cover the roofing material for 1 wave. The overlap between these elements can be more than 50 cm. Each plank is fixed to the board with 4 nails or self-tapping screws to avoid deformation in strong winds.

Important! The joints between the windshields must be airtight and not let water through. To do this, they are treated with a silicone-based sealant.

Video instruction

If it seems to you that the roofing material is sheets of metal tiles and that's all, then you are deeply mistaken!
In addition to the roofing material itself, quite a lot is installed on the roof. a large number of so-called additional elements.
All kinds of valleys, planks, skates, which are designed for joining together various parts of the roof.

There are not so few such elements on the roof.
This can even be understood from their cost: the cost of a set of additional elements is 15% of the cost of the entire roofing cake.
And than harder design roofs on your building, the more you will have to use additional elements there.
For some reason, most developers believe that sellers of roofing material, reminding them of the need to purchase these elements, are trying to earn extra money.
This is not true.
The function of these elements is not only decorative.
They still reliably protect the rafter system and the roofing pie from water getting there.
Typical representatives of additional elements are eaves and end strips.
Cornice strip (drip) is one of the most important elements in the arrangement of roofing from sheets of metal.
In addition to the decorative function, this element also performs a protective function.
It is designed to reliably protect the frontal board of the cornice from atmospheric precipitation, to prevent this board from getting wet and moisture from penetrating under the roof when a strong side wind blows.

Water that flows from the roof, thanks to the drip, enters the gutter system.

Protective strips are made from the same metal and using the same technology as standard sheets of metal.
Thickness steel sheet 0.4-0.5 mm.
And in the same way, the cornice and end plank are covered with a layer of zinc and polymer protective coating.

In those houses where the roof structure does not provide for the installation of a cornice strip, or the tightness of its fastening is broken, smudges begin to appear on the walls, and on metal elements rust will form.
End plate Outwardly, it very much resembles a cornice bar, but only such a product is attached not to the cornice part roof slopes, but on their side ends.
Such an element performs the function of protection against wetting of the crate and protects the roofing from the wind load.
That is, with strong gusts of wind, it does not allow the roof to be torn off.
It is for this reason that it is often called a wind bar.

Mounting

1. Before you start mounting cornice plank, install the front board. To do this, the frontal board is nailed to the end parts rafter legs. Sometimes, instead of a frontal board, a cornice board is nailed, fixing it in special grooves previously made in the rafters.
2. The next step is the filing of the eaves. To do this, use a grooved board, siding or corrugated board. A support beam is attached to the wall of the house. This beam plays the role of a second support so that the roofing eaves can be hemmed.
3. Before starting the installation of the cornice strip, the brackets are fastened, into which the gutters will then be laid drainage system. Brackets can be fixed both on the cornice strip itself and on the ends of the rafter legs.
4. The eaves bar is installed in place. If the brackets of the drainage system are fixed at the ends of the rafters, then it is installed over the brackets and attached to the frontal board. Self-tapping screws are used for fixing. The distance between the screws should be 35 cm.
   The bar is mounted before the beginning of laying sheets of metal.

Important!
When building a cornice strip, do not overlap more than 100 mm.

End plate installation

Unlike the eaves, the end plank is mounted after after the roof is completely laid roofing carpet.
Install the end plate so that it covers the ends of the roof.
For installation, you must perform the following steps:

• an end plate is installed according to the height of the wave of the laid metal tile. It should completely cover the crate. At the same time, the surface of the end plate should be connected from above with the crest of the wave of the metal tile;
• when building up the end strips, an overlap of 100 mm is performed;
• all joints between the roof and the windshield in without fail should be sealed.

The end bar must be set so that the crest of the wave overlaps.
If this is not done, then with a high degree of probability water will get under the metal tile.
To block the crest of the wave, the metal tile sheet is flanged upwards.

A photo

Where do you buy accessories

If you want the roof on your house to look beautiful and sophisticated, then all roofing materials should be of the same style and color.
It is for this reason that it is recommended to buy metal tiles not end-to-end, but several sheets more.
If suddenly, for some reason, the sheet has to be replaced, then exactly the same tile, but from a different batch, may have a completely different shade.
And it will be very noticeable!
The same applies to additional elements.

If they are purchased elsewhere, the shade of their color may differ from the shade of the metal sheets.
Therefore, eaves and wind plates are purchased immediately in the same place as the sheets of material.
And it makes sense to buy self-tapping screws here.
Then the color of their hats will not differ.
And everything will be easier with delivery when all the material is purchased in one place.
By the way, you should know that most metal tile manufacturers give a guarantee on their material only if you install additional elements good quality.
To avoid problems with the warranty, buy everything at once in one place.
price of one running meter cornice strip for metal, depending on the coating is 100 - 200 rubles.
Believe me: save on wholesale (when buying everything for the roof, you will automatically turn into a wholesaler), save on shipping and nervous system save yourself!
Video about mounting the bar.

Cornice strips are an integral element of a metal roof. They belong to additional parts and are responsible for the integrity of the structure, joining each other separate sections roofs.

Advantages and disadvantages

The popularity and high consumer demand of cornice elements are due to a number of undeniable advantages of this material.

• Protection of the attic/ceilings from the negative impact of aggressive environmental factors.
• Ensuring a tight connection of the roof with vertical surfaces: walls, chimneys and ventilation shafts.
• Concealment wooden elements roofs. This eliminates the risk of spread open fire from neighboring buildings during a fire, and also generally increases fire safety building.

• A wide range of colors of cornice strips allows you to choose additional elements for metal tiles of any shade, providing the opportunity to use the technique of combining different colors.
• Proper use of all types of cornice strips in the construction of the roof, as well as strict adherence to the installation technology, will provide a stylish and aesthetic appearance not only for the roof, but for the entire building as a whole.

The disadvantages of the slats include the high cost of the material and the high labor costs during their installation. It also requires possession of certain building skills and a special tool.

purpose

The role of additional elements in the overall structure / arrangement of the roof cannot be underestimated. Despite the fact that they occupy a very small area on the roof, the strength of the structure and the duration of the service life of the coating depend on the correct installation of the strips. The decorative function of the cornice elements is to create a complete image, as well as the ability to give the roof an aesthetic appearance. Usually the slats are selected to match the overall colors metal tiles, but sometimes additional details are purchased in a contrasting shade, giving the roof individuality and style.

In addition to the decorative function, additional details provide reliable protection rafter system and roofing pie:

• from water penetration;
• from the rain;
• from melting snow.

Thanks to the installation of cornice strips, the frontal board of the eaves becomes completely protected from moisture penetration in strong side winds, and a special drip strip drains water flowing from the roof into the downpipe.

They produce cornice elements from the same steel and using the same technology as metal tiles. The bar is galvanized and coated with a protective polymer layer. As a coating, compositions of polyester and plastisol are used. In the production of planks for composite roof tiles basalt chips are used. The thickness of the elements is 0.5 mm, the cost of 1 linear meter varies from 100 to 200 rubles, depending on the quality of the coating. Functionally, cornice elements are divided into frontal, end, ridge, adjoining strips and drips.

Droppers and windshields

The dropper is designed to collect and drain water into the system downpipes, therefore, it should be mounted only from the side where the drain is installed. In addition to the drainage function, the dripper protects the lower part of the crate. Frontal bar protects the attic from rain and snow, and also covers the entire height of the front board. The correct installation of the cornice strip depends on how evenly the frontal board is installed. The frontal board should be fixed with galvanized nails to the end of the rafters.

Then you need to hem the cornice with siding or corrugated board. A beam should be attached to the wall, which will play the role of a second support, providing the possibility of filing roof overhang. On top of the board, it is necessary to strengthen the eaves strip with an overlap between two adjacent elements of 1 cm. If the drainpipe brackets are fixed directly on the end sides of the rafters, the strip is mounted on top of them. The step between the screws should not exceed 35 cm. After the installation of the cornice elements, you can proceed to cover the roof with metal tiles.

Skate

This type of cornice elements closes the joint between the roof slopes. He protects attic space from the penetration of precipitation and melted snow. Also, this material protects the edges of the sheets of metal tiles from bending during strong gusts of wind, and also prevents dust and small debris from blowing under the roof. The installation of the ridge is carried out after the installation of the under-roof ventilation system, and begins from the end of the roof. Ridge strips are laid on top of the end strips, making an allowance of 30 mm outward. If flat strips are used during installation, then they should be overlapped with an odor value of up to 10 cm. When laying semicircular models, the parts should be connected along the stamping lines.

The method of fastening and the shape of the ridge depend on the angle of the roof. They are selected at the stage of installation of the crate. If the angle of the plank and the joint of the roof do not match, the parts can be corrected using locksmith tools. After laying the semicircular ridge, the ends should be closed with special plugs. To reduce labor costs and reduce time installation work under ridge bar it is recommended to install a block of wood. This will help to quickly attach the structure to the wooden base.

end

This type of protective additional elements is fixed at the ends of the roof slopes. They protect the crate from moisture and wind. Due to these properties, the end bar is often called the wind bar. Similar item is a flat sheet having a length of 190 to 200 cm. geometric shapes elements depend on what type of metal tile is used. For example, for a ribbed roof, you should purchase elements with additional stiffeners - in this case, the roof will look organic (as a whole), and the bar will not look like something foreign.

The bar works as follows: the resulting moisture is removed from the edges of the side overhangs, the design of the roofing pie is securely closed from dirt and dust, and the fasteners do not loosen during gusts of wind.

The wind bar is installed after the installation of the metal tile is completed. Fastening should be carried out, focusing on the wave height of the metal tile sheet. At the same time, it should cover the roofing ends and the crate. On the sides, the part is fixed with self-tapping screws, and from above it is connected to the crest of the wave, which must necessarily overlap. To do this, flanging the edges of the sheet up. The resulting joints must be treated with a sealant. The overlap of the end strips should not exceed 5 cm, and the distance between adjacent self-tapping screws should be at least 40 cm.

Adjoining strips

When the laying of the metal tile is completed and the installation of the wind strip is completed, you should proceed with the installation of the adjoining strip. The functional purpose of this type is that it fixes the valley carpet on vertically located planes. In other words, they smoothly connect the roof to walls, chimneys and ventilation ducts, forming roofing unit. In addition to practical use, the junction bars act as decorative element and give the roof a finished, neat look.

Installation should begin with chasing the vertical surface of the pipe, and this should be done only in bricks, but not in the seams. Then heat-resistant waterproofing material at least 5 cm high. Then it is glued with construction tape. Then you should adjust the bar to the dimensions of the pipe, put it on the pipe, while leading upper part strips in the recess of the strobe. The joint should be treated with a sealant. The lower part of the junction bar must be fastened to the crate with self-tapping screws. To the walls and ventilation channels, the installation of the element is carried out according to the same scheme. The overlap of the material should be no more than 10 cm.

Strict observance of the installation technology and following some recommendations will help to form a beautiful and solid roof, which for many years will protect the attic from rain, wind and snow.

• First of all, you should make sure that all materials for the roofing device are of the same color and style. It is recommended to purchase all sheets from one batch, making a stock of the purchase: usually 2-3 additional sheets are enough.
• If by chance the sheet is damaged and it becomes necessary to replace it with a new one, then there is a high probability that the material from another batch will differ in shade, which will negatively affect the overall appearance of the roof.
• Self-tapping screws should also be purchased from the same batch. This will ensure the hats are the same color.

Installation of cornice strips takes the same time as laying metal tiles. This is a labor-intensive process that requires certain skills and abilities. From the correct and accurate installation of additional elements depends general form roofing and its tightness. The cost of the slats can not be called low. But only with their help it will be possible to form a reliable protection for the house, giving it an aesthetic appearance.

For the types and features of installing cornice strips for metal tiles, see the following video.

5959 0 0

Cornice strip for metal tiles and corrugated board - types of structures and installation techniques

Metal roofs made of metal tiles and corrugated board are now rapidly gaining popularity, but their arrangement has its own nuances. Without details such as cornice strip, wind strip and other additional elements correct installation impossible. Let's see what are the differences between these elements and where they are installed. And do-it-yourselfers will find instructions for installing these elements here.

Main additional elements

For metal tiles and for corrugated board, the assortment, quantity and installation technique of additional elements is practically the same. This is due to the fact that the materials are very close relatives, because they are made from the same steel, only the sheets are bent in different ways.

Illustrations	Recommendations
	eaves plank.
	End plate. The end or gable insert is installed along the side edges of the pitched roof. It is mounted on top of the wind board on the pediment and is designed to protect the inclined overhang from wind and precipitation, which is why it is also called the wind board.
	Skate pad. As the name implies, the installation of this element is always performed on top of the ridge. The configuration and dimensions of the structure may be different, but the purpose is always the same - to protect the roofing pie in the ridge area from precipitation.
	junction bar. These elements are mounted at the junction of the roofing to any structures, for example, chimney, adjacent wall of the house or the plane of the roof. The range of these structures is quite wide and they are used not only for roofing from metal tiles or profiled sheets. On any roofs where there are adjoining lines, almost the same models are mounted.

How dobors are mounted

The installation of additional elements is not a tricky business, the main thing here is not to make a mistake in what and where to nail, so I placed detailed instructions next to each diagram.

How to fix the cornice plate

Often people confuse a cornice bar with a drip. So the cornice lining is nailed over the crate and covers the entire structure from precipitation, and the dripper is designed to remove condensate from the roofing pie.

• The cornice plate is fastened after it is fully assembled rafter system roofs, a crate is stuffed over the rafters and a frontal board is installed;
• At this point, the dropper and the frontal plate covering the frontal board should already be installed and fully warmed up;
• If the hanging hooks on which the gutters are mounted are planned to be attached to the rafter legs, then they must also be installed;
• The only exceptions are models of gutter hangers, which are attached directly to the frontal board, they can be fixed after the roof has been arranged;

• The plate itself is nailed over the extreme horizontal board of the crate. It is not so important whether you nail it or screw it with self-tapping screws, in any case, the fixation step is about 300 mm;
• But the strip is quite wide, so it is nailed with two rows of nails, between themselves these rows should be offset, that is, the nails are beaten in a checkerboard pattern;
• After installing this design, you can proceed with the installation of a roof made of metal or profiled sheet.

The cornice overlay itself is a prefabricated structure, it is assembled from a number of identical elements and each subsequent element is nailed with an overlap on the previous one of the order of 50–70 mm.

Installing the end plate

The installation of the end plates is carried out after metal roof the end gable board was laid and nailed. There is no difference between the end plates for metal tiles and profiled sheets, they are also mounted in the same way.

• The design has L-shape and its horizontal part is screwed over the extreme wave of the roof;
• Self-tapping screws are supposed to be screwed into the upper part of the wave and they are located in increments of 300–500 mm;
• The vertical part of the lining is attached in the same way, only screwed to the windboard;
• The end cap segments are mounted from the bottom up and overlap each other by approx. 100 mm. During installation, the overlap between the segments must be coated with sealants.

Installing the ridge rail

• Mounting of the ridge trim segments starts from the edge of the roof. The first segment should extend beyond the roof by about 20–30 mm. After installation, it is immediately closed with an end cap;
• The segments are screwed with self-tapping screws with a press washer into the upper part of the wave of the roofing material. According to the rules, it is supposed to fix the plate in each wave, but often the masters fix it through the wave, which is also not considered too big a mistake;
• If the model is straight, then the overlap between the segments is 100 mm. AT semicircular models the connection is made along the transverse stamping line. But in both cases, the connection is smeared with sealants;
• The end plate is cut to length and a similar end cap is installed on it.

Junction nodes

Adjacency nodes are mounted in 2 ways, and the choice of method depends on the installation location of the structure:

1. If we are dealing with the connection of two roof planes, then the upper part of the insert should go under the roofing material of the upper sector and fasten through the sheet to the lower part of the wave, and the lower part of the plank is superimposed over the lower sector and fastened to the upper part of the wave;
2. If a connection to the wall is being arranged, then a groove with a depth of 20 - 30 mm is pre-cut in the wall with a grinder. The upper edge of the insert is inserted into this groove and filled with sealants. Further, the insert is screwed to the wall and through the roof to the crate.

Conclusion

Despite the fact that the eaves plank and related extensions are installed in a similar way, as you can see, there are still nuances and it is better to remember them. The video in this article shows interesting details in the process of arranging extensions. If you have any questions, write in the comments, I will try to help.

If you want to express gratitude, add a clarification or objection, ask the author something - add a comment or say thanks!