Complex construction roofing makes the house more attractive, adds respectability to the exterior of the building. When installing a hip or hip roof, structural element called endova. It is located at the junction of two slopes and is a place for snow accumulation and water drainage. That is why the device of the valley assumes tightness and high strength.

Definition and types

Endova is a functional part of the roof, it is a gutter formed at the junction of the slopes. Like any junction, it experiences an increased load, therefore, from strength and a competent device roofing element the reliability of the entire roof depends.

There are two types of valleys: the lower one, which protects the joint from precipitation, and the upper one, which, in addition to the protective one, also performs a decorative function. The installation method determines the type of element:

• Open valley - it is arranged on gentle slopes, it is simple option... The slope joints have a gap in which the gutter and waterproofing are placed.
• Closed valley - used for a roof with steep slopes that fit tightly to each other.
• Interwoven valley - with this method, the roofing sheets are intertwined with each other, waterproofing is required.

Preparation

Roofing schemes are developed at the design stage, at the same time the type of valley is selected, which depends on the angle of the slopes and the material used for the covering. The lower valley is installed on the rafters, therefore it should be marked in the roof plan. Depending on the selected roofing material, the structural element at the junction is made of metal or soft tiles.

Note! Cink Steel - practical choice, it ensures reliable operation of the valley for a long time.

Installation of the valley

The first step in the device of the valley is the installation of a solid crate, it can be made of strips stuffed with a number or from edged boards, which are treated with an antiseptic to protect against moisture. The width of the battens should be about 20 cm on each side. A solid surface will increase the strength of the knot, which has a high snow load.

A layer of waterproofing is laid, it is not worth excluding this component, because the roof valley must ensure complete waterproofness. For a sealed base, it is better to use roll material bitumen-based with basalt dressing for strength. If the waterproofing consists of several parts, the canvases are laid with an overlap.

The open type of valley is used more often than others; for its construction, you need to make a special gutter. The material for it is a strip of galvanized steel bent at an angle greater than the valley.

The lower valley has a bend in the edges to prevent overflow of water; it is wound with the lower part to the cornice. At this point, an overhang of 8 cm is left for secure attachment. A seal is placed at the point where it joins the ridge. Fastening is done with self-tapping screws to the crate, the drilling step is 30 cm. Laying occurs from the bottom up, if the groove consists of separate parts, then they are superimposed one on top of the other with an overlap of up to 15 cm. The joints are protected with silicone sealant.

Features of the device

When they are cut, leaving up to 10 cm to the center of the valley. Fastening takes place with self-tapping screws, which are tightened without approaching the center of the corner closer than 25 cm. The self-tapping screws pass through the metal and the valley strip, holding the structure together.

The upper valley is made of roofing material, it is fixed after laying the main covering and covers the sections of the laid sheets. It is attached at the top points of the metal tile abutment.

To install a valley on a roof with corrugated boarding, you will need a continuous crate and waterproofing, which is 10 cm wider than the valley strip. With a small angle between the slopes, the size of the lower valley should be maintained by 50 cm in both directions. The overlap of the parts on each other is at least 20 cm. The lower valley extends under the ridge by 25 cm. After fixing the corrugated board, the decorative strip is laid.

For soft roof the valley is settling open way... End carpet is laid on bituminous mastic and is nailed down. The overlap of the canvases is up to 30 cm and must be glued. Ordinary shingles are fixed 30 cm from the axis of the corner, their edges are fixed with bitumen.

1. A closed valley is more complicated and costly, but it looks more attractive.
2. For effective protection use multiple layers of waterproofing.
3. In buildings with a large roof area, the valley can be up to three meters in size.
4. The frame for a structural element subject to high loads must be strong.
5. Do not work in wet weather.
6. Roofing works require compliance with safety rules.

Endova is a complex and critical element of the roof, you should approach its installation, armed with the knowledge of installation. Numerous photo and video tutorials will help in the work.

Video

This is how the lower plank of the valley is installed:

Where to start installing the valley, what needs to be foreseen - about this and much more below:

It is important to build the valley in such a way as to withstand the natural elements, as well as to protect the roof of the house from leakage and, possibly, tearing off the roof by gusts of wind.

What is endova?

If you end home construction, then one of the most important things is the installation of the roof valley. Endova or groove is the junction of the roof slopes, which takes on the lion's share of the roof load:

• heats up in summer to high temperature;
• rainwater flows down to this joint;
• the snow load is the highest here.

A natural disaster to a home can be prevented or mitigated if the valley holds the corner kick firmly. correct calculation construction of a house or its individual parts, you can contact the specialists of the company "InnovaStroy". In order to order a free rendering, you can fill in the contact information and leave a message on the rendering parameters on the main page of the company's website. By going to home page, you need, having scrolled the page one row from the top, press the button "Order a construction miscalculation - free!"

The bottleneck of the whole house

What is the need correct device valleys? The weakest point of any design is the place where there is a connection. It is here that all the negative external influences for the construction. Endova, which connects two, three, and, sometimes, more parts of the roof, is the bottleneck in the design of any structure, both in the private sector of construction and in commercial buildings.

An incorrectly constructed or incorrectly calculated valley can cause the roof to begin to collapse, under certain circumstances, the entire roof, and sometimes the entire house. If we approach laying the valley unprofessionally, without calculations and certain knowledge, we can get the most negative consequences. If we know in advance what it is necessary to protect the house from, then we can make long years the junction of the slopes was a reliable connection. The specialists of the "InnovaStroy" company have extensive experience in successfully carrying out the most difficult roofing works, including the device of the roof valley. The company can also order a comprehensive service, including house design, roof and roof repair, as well as design of a new or reconstruction of an existing roof, assembly or full cycle roofing works performed by professionals.

How to build a valley correctly?

Whatever the roof is built from, whatever material you choose for the roof, there is general rules laying, a diagram of the device of the valley:

1. First, a solid wood lathing is attached at the junction of the two roof slopes.

2. The valley bottom is reinforced with roofing sheet or other suitable building material. It must be waterproof, resistant to temperature extremes. This can be, for example, one of the options for waterproofing carpets.

3. The battens are first assembled from a solid plank flooring.

4. The deck is covered with an asbestos-cement (slate) tray or galvanized steel tray. This is also called the lower valley. The edge of the tray should protrude forward, beyond the border of metal tiles, sheets of slate or corrugated board. This will ensure the rigidity and reliability of the structure.

5. The last step in building a valley is laying above all. roofing sheets, the upper valley. Usually the upper valley is a piece of the same material from which the entire roof is made. The upper valley is not a necessary element of the roof, but it gives the building complete aesthetic appearance .

Sometimes they may refuse to lay the upper valley for the following reasons:

• it is necessary to organize a large drainage capacity;
• the skipping of melted snow, which often gets particles of branches, leaves and other debris, goes better with open type valleys;
• it is necessary to improve the flow of thawed or storm water for a roof with a low slope angle.

We talked about the basic rules for arranging a valley, but besides this, they have many features. Most important factor, influencing the technology of laying the valley - this is the material of the roof. Endova is, in fact, a part of the roof, therefore it must be a continuation of it and be combined in color and material of manufacture. technological features important when completing roofing work, which we will talk about further. If you carefully read all the tips, then you may well try to install a valley on the roof on your own. If you are not confident in your abilities or you do not have consultants with experience in construction, nevertheless the best option will appeal to those who know how to build this important part of the house. Our advice will help you understand how the valley is arranged and how to build it correctly, even if you are not a builder, but a customer of the service.

How will the endova save the house?

The principle of operation of the valley is based on the drainage of water under the influence of the angles of the slopes:

• along grooves, gutters or roof profile, moisture, snow or a stream of water flows down to the valley gutter;
• the gutter receives the flow and directs it down the roof;
• independently or with the help of a drain, the water stream is drained to the ground.

Endova should be, based on the tasks set by the front roof structure:

• strong enough to hold water flow or creep snow, ice
• additionally waterproofed to eliminate possible leakage of the roof near the gutter.

To take into account all the features of laying the valley, you should know simple rules, worked out by professional builders.

Metal roof valley device

Metal roofing is the modern queen of roofs, as it has a beautiful appearance and excellent characteristics. When it comes to installing metal roof valleys, the roof is formed according to general scheme that we described above. First, a crate is arranged, and then a standard sheet of metal tile is placed, specially prepared in the form of a gutter. From above, after the installation of all roof sheets, the upper valley is also attached.

During the installation of a valley made of metal tiles, it should be remembered that wooden crate it is required to do:

• solid, without voids at the junction;
• lathing material - boards not less than 150 x 25 mm;
• the width of the lathing from the center of the joint must be at least 300 mm on both sides.

After the formation of the lathing, it is required to lay a waterproofing - a special mat or any other resistant to moisture and stress, building material. The lower valley is fixed with self-tapping screws with a pitch of at least 300 mm. The edge of the valley is fixed on top of the cornice, since this is necessary for high-quality drainage of water. two edges of the slopes, the overlap should be at least 10 cm. Between the lower valley and the metal tile, it is recommended to lay a seal that will expand under the influence of heat and seal the connection.

Slate roof valley device

Slate is a classic roofing. These corrugated sheets made of asbestos cement are cheap and easy to work with, although they are more fragile than metal tiles.

The device of the valley on slate roof retains the main stages of installing a valley with metal tiles. On the finished wooden frame-frame, a sheet of slate is laid, which is specially prepared at the factory for the lower gutter. The upper valley is laid after the entire roof has been installed. The lining for the slate valley is made of beams with a cross section of at least 60 by 60 mm. If the roof lathing can pass with pauses in laying, then the valley requires a full lathing. On top of the formed wooden gutter, a slate part, usually factory-made, is laid. Slate blanks begin to be fastened with thick and large slate nails from the bottom to the top of the roof.

If there is no such slate figure, you can use a metal base for the lower valley. Slate sheets should overlap the edge of the lower valley by 10-15 cm. Sometimes, in the slate version, the upper valley is not performed, in order to increase the flow of melted snow or a large flow of water during heavy rains. This scheme is practiced in places with high humidity and specific climate.

The device of the valley from the corrugated board

Roofing sheeting has been used for a long time, although such a covering is not fashionable for houses - it looks too simple. But the corrugated board is not losing ground, since it is inexpensive and easy to process, which is very important indicator... There are no differences in the installation of the valley in comparison with metal tiles and slate, although there are some peculiarities. For the lathing, you can use a continuous row of boards with a cross-section of at least 32 by 100 mm and a distance of at least 50-60 mm from the center of the valley. The plank of the valley should go under the main cover of the corrugated board by at least 250 mm.

Other ways to build the valley

The roof is not always made from popular materials. Sometimes it is required to make a valley for a soft roof, for example, from rolled modified bitumen or other synthetics. In this case, the valley is made either open or by the "undercut" method. Under underlay carpet the carpet of the valley is laid on top. This carpet is coated with bitumen mastic to enhance waterproofing. The carpet is nailed down with roofing nails, which are driven in at a distance of no more than 2-5 cm from the edge of the carpet and at a distance of no more than 25 cm from one another.

If the valley is laid using the undercut method, flooring parts are not required. tiled roof... A tiled roof is complex in design and technique, therefore it requires special attention builder. It is important not to allow any gaps in thermal insulation or insufficient insulation. In this case, the valley must have snow cleats. The valley is laid in a tiled roof in two ways:

• on wood flooring from boards
• on a thick wooden crate.

The width of the plank flooring must be at least 30 cm from the axis of the groove. The groove is laid on the flooring before the lathing is filled. The grooves are built from the bottom up.

Important results

The device of the valley is very important point at the end of the construction of a house, cottage or outbuilding. The principal thing is that its device has many technological moments that should not be overlooked:

• high-quality waterproofing of the lower valley to preserve the integrity of the roof and durability of operation
• compliance with the structural strength of the lathing to prevent sagging or breakage of the valley

• the correct selection of materials for installing the gutter, the choice of this material, taking into account the highest quality and reliability, waterproofness;
• installation of valley elements by specialists or amateur builders with sufficient knowledge.

If all these points are observed, you will get a roof where the valley will perform its main function - to protect from the destructive power of water and keep warm and cozy in your home for many years without costly and troublesome unscheduled repairs.

Help to conduct correct installation Roof valleys will help you with a video.

• The roof is considered to be the main functional element of any structure. Moreover, this is a rather complex constructive element, and the more complex it is, the more careful approach it requires. A complex configuration, on the one hand, makes the roof look more beautiful and interesting, and on the other, makes it more vulnerable due to the formation of bends.
  The roof is considered to be the main functional element of any structure. Moreover, this is a rather complex constructive element, and the more complex it is, the more careful approach it requires. A complex configuration, on the one hand, makes the roof look more beautiful and interesting, and on the other, makes it more vulnerable due to the formation of bends.

  Endova are practically invisible, but they can both spoil the appearance of the facade and emphasize its dignity. The rafter system of the roof valley, thus, not only allows to solve functional problems, but also provides a unique design.

  Endova is called the place of convergence of the roof slopes forming the inner corner. It is an indispensable element of buildings that have a T-, G- or cruciform shape, or have pronounced slopes. To this list, you should also add bends that form on or protruding.

  It provides a uniform drainage of sediments collected at the corner, a kind of analogue of a gutter, that is, they are under a significant influence of moisture. This is why the rafter system of a complex roof requires special attention.

  The inner corner of the structure forms two strips, and each of them has an important function:

  • bottom (PEN) is a special plate that is bent in accordance with the mating angle of the roof slopes. It is attached to the underside of the eaves board with self-tapping screws. PEN protects and protects against precipitation from flowing into the place where the slopes meet. Installation of the bottom valley is carried out before and laying the roof covering;
  • upper (PSV)- carries an artistic and aesthetic load and is installed after laying the coating.

  On a note

  As a rule, the same material is used for manufacturing as for the roof. It is often replaced by metal sheets, preferably made of galvanized steel, as it extends the service life of the roof. And so that the finished roof does not lose its attractiveness, you need to choose the right shade of the material.

  Types of valleys

  

  Any, even small, error in the calculation or error in the installation of the truss system with valleys is fraught with irreparable consequences, including the collapse of the structure. In winter, they are under the influence of colossal loads for a long time.

  Depending on the installation method, a distinction is made between:

  • Closed and articulated designs- typical for roofs with steep slopes or for certain roof coverings, where the elements of the roof are intertwined, as, say,. For these structures, an additional layer of waterproofing is required.
  • Open... In this case, the slopes are adjacent to each other. This is also taken into account when the rafter system is installed. The gap between the slopes is closed with a special trough, through which sediments are effectively drained. Additional waterproofing in this case it is not required.

  Installation for soft roofs

  Let us dwell on the basic principles of the design in the case of a soft roof.

  Preparatory work

  A negative kink can be issued in at least two ways:

  • open;
  • undercut method.

  The base is prepared depending on the option chosen.

  • Open. Along the length of the valley, the valley carpet (KE) is laid on the lining barrier, shifted horizontally by 20–30 mm. From the inside out, along the entire perimeter, it is coated with, say, TechnoNicol bitumen with a strip 100 mm wide. The thickness of the layer is selected in accordance with the consumption rate. By front side the carpet is fixed with roofing nails with a pitch of 200–250 mm with an indent from the edges of 20–30 mm.

  If it is not possible to lay it with a continuous sheet, which is very desirable, then the laying is performed with a longitudinal overlap of 300 mm, carefully gluing.

  • When using the "undercut" option, KE is not needed.

  Open method installation

  

  • ordinary tiles are laid on the KE to the central axis;
  • all the tiles that cover the inner corner between the slopes are additionally secured to the upper top using nails for this.
  • the distance from the axis to the fastener must be greater than 0.3 m;
  • then, using a coated cord, beat off two lines, along them they will cut through ordinary tiles;
  • the waterproofing carpet can be damaged when trimming, therefore, a plank is placed under each tile in the process;
  • before final fastening, bituminous mastic is applied to places without a self-adhesive layer;
  • if the difference between the slopes of the slopes is large and, accordingly, the water flow also differs markedly, the trough is shifted in the direction of the smaller water flow. V otherwise water will wash away the joint between the valley carpet and ordinary tiles;
  • the width of the gutter ranges from 50–150 mm. The choice depends on the characteristics of the location of the object. If it is built in a thicket, it is recommended to increase the width of the gutter so that the foliage can wash off without hindrance.

  Installation by the "undercut" method

  

  • laying of ordinary tiles begins with a slope having a smaller angle of inclination. In this case, it is supposed to approach the second steep slope. It should not be less than 300 mm.
  • similarly to the previous case, it is necessary additional fixation each panel in the upper corner.
  • after the first slope is covered, at which the angle of inclination is less, on the other, at a distance of 70–80 mm from the axis, the chalk line is “beaten off”. This is the place of the future shingles undercut.
  • this applies to each tile, and before they are finally fixed, mastic is applied to the places where there is no self-adhesive layer on the seamy side.

  On a note

  The intertwined method involves performing the same steps as in the "undercut" with the only difference that ordinary tiles are interlaced when laid on an adjacent slope.

  Device
  

  

  The rafter system of the valley most often consists of nesting rafters. Moreover, since it is assumed that they have the same height, then the slant rafters in the structure of the valley with the lower part will abut against the Mauerlat, and the opposite - against the ridge run.

  To form different types roofs: and half-hip, it is necessary to provide a different geometric shape and height of the ridge, and not only the main structure, but also the secondary one.

  Rafter system with valleys of the L-shaped roof

  

  • The racks of the main roof truss structure and the secondary roof girders are interconnected. In this case, the latter are supported by the decks.
  • Roof purlins of secondary roofs are connected.
  • Whatever the height of the purlin at the main roof, the connection is made through a nail break.
  • Along the slant rafters, in a staggered position, the beads are installed, which are connected to each other in the ridge knot. They, like a hip roof, rest on bars that are pre-sewn onto the rafters.
  
  

  Diagonal rafter legs, depending on the device, can work both spacer and non-spacer. As already noted, the women run into a diagonal rafter. In doing so, they transfer significant compressive stress to it. The rafters, in turn, resting against the lower end

Make a gable or pitched roof pretty simple. Although it will fulfill its main function, from an aesthetic point of view, it does not differ in attractiveness. Recently, designs with several slopes and protrusions have gained great popularity. At the junction of the two slopes, a knot is formed, which is called the valley. This part of the roof requires special care in design and installation. From the article you will learn the features of the valley and how to make it yourself.

Endovaya is called only the inner corners of the roof. Without this element, you cannot do on buildings that form a T or G shape. In addition, similar angles are formed at the points of output dormers, protruding parts of the attic and other architectural delights.

The main purpose of the valley is to protect attic space from moisture penetration. The fact is that in this place the roof is experiencing increased loads due to the fact that it accumulates there a large number of precipitation. In winter, snowdrifts form here and the structure can sag under increased loads.

The inner corner is assembled from two planks, and each is designed for a different purpose:

• Lower. In accordance with its name, it is located under the roof covering. Fastened with self-tapping screws to the cornice board. It performs the main protective functions of keeping moisture in the place where the slopes mate.
• Upper. In the inner corner, it is difficult to beautifully arrange the convergence of the roofing material. Therefore, a second bar is mounted on top, which has only a decorative function.

The material of the valley is usually the same as the base covering on the roof. In some situations, it can be replaced with galvanized steel sheet. In this case, it is important to choose a metal with protective coating, since he will often have to come into contact with aggressive environments.

When constructing a valley, it is important to follow all the rules for the construction and construction of rafters. If one of them is neglected, then there is a threat of collapse of the frame. At the same time, the norms differ for different types of construction. Depending on the roofing material used, one of two types of frame is used:

• Articulated and closed... They are used on slopes with a large slope and for roofs made of flexible materials, for example, soft tiles. This type requires the installation of additional layers of waterproofing.
• Open. Here the slopes are connected to each other at a shallower angle. The junction is closed with a special chute, through which precipitation flows down. This design does not require special expenses for the device of excess waterproofing.

Features of the rafter system and lathing

Depending on the slope of the slopes, wooden rafter legs are attached to the valley at a certain angle. Moreover, for each side, this indicator may differ from the other. Where the beams converge, a thicker rafter is installed. The method of attachment to this place depends on the length of the rafters. If it is less than two meters, then nails are enough, otherwise metal pads will be needed for reinforcement. Before installing the valley, the place of greatest load is calculated, a retaining jib is installed there.

Where the slopes converge, it is required to strengthen the roof sheathing. How much reinforcement will need to be done depends on the type roofing:

• Metal tiles. In order for the angle to withstand the load between the strips of the main crate, additional ones are fixed. Thus, in a responsible place, the step is halved. In this case, it is important that the length of the lathing is greater than the width of the valley plates.
• Professional sheet, ceramic tiles and slate. For these materials, boards with a width of more than 100 mm are mounted along the mating axis. The number of boards depends on the width of the backing, you may need two or three on each side.
• Ondulin. 75 cm recede from the central axis of the valley and fasten one board less than 100 mm wide. A special groove should be placed in the resulting space.
• Soft roof. For this material, the crate is made solid and somehow it is not necessary to strengthen it.

The main part of the valley on the roof is attached to the roof rafter, which rests against the ridge on one side, and on the Mauerlat on the other. In some cases, for example, when installing a light window, the attachment points may change. Depending on the type of roof, the height and shape of the ridge changes. This applies to both the primary and secondary structures.

For change geometric shape roof structure, it is enough to lengthen or shorten the girder. Along with these manipulations, the slope of the valley will change.

The rafter system of the valley is assembled as follows:

1. Attach a purlin from the secondary roof to the rafter of the main roof structure. For the connection, use instruments.
2. The rafters are fastened with nails hammered at a slope. Such a connection meets all safety requirements and can withstand a sufficient load.
3. Install an inclined rafter from the girder attachment point to the Mauerlat.
4. The rafters are attached to the inclined rafter. For connection, at the points of contact, support bars are fixed in advance.

The reluctant wives transmit diagonal rafter high compressive stress. Because of this, the beam heavily loads the Mauerlat joint. To reduce the pressure from the inclined stopline to the pillar, to which the secondary roof purl is attached, a connecting tie is pulled. It works in tension and does not allow the valley stop to squeeze out the Mauerlat. If the roof is hip, then the tightening is connected between two diagonal rafters.

In addition, if, under some circumstances, the main skate loses its fulcrum, the puff will act as a thrust. So, it can prevent the emergency destruction of the roof.

The tightening or grappling should be placed at the base of the valley, as in a high position it will cease to work in tension. In this position, the beams work in compression and are called crossbars.

As you can see, in rafter system for the valley there is no particular difficulty and you can install it yourself. At the same time, it is important not to be mistaken in choosing the section of the timber and the reliability of the fastening. Then you will assemble a unique roof and it will last several decades without leaks.

Many people think that the roof consists of a pair of beams, planks and nails, but this is not the case, the structure is very complex with many parts and fasteners. We propose to consider what a roof valley is, as well as how to make it yourself.

What is endova

End roof gutters are gutters that are used to facilitate water drainage where two slope sections (roof joints) meet on the roof. The gutters on old houses are often made of corrugated cardboard, because slate is very difficult to bend and install to create an internal corner, sometimes DIYers bent sheet metal or aluminum, which are known for their strength qualities.

Photo - Endova

This design is mandatory for a building with a multi-gable roof. Roofs with pronounced slopes do an excellent job on their own, but if there are several joints on the roof, or if the hollow angle retains water on the surface, you need to use this technology to extend the durability of the structure.

Photo - Installation of the valley on the frame

Benefits of using a valley:

1. Slate elements suffer greatly from the influence of rainwater, the material collapses, crumbles, if you do not organize drains, then the roof will break and begin to flow faster than the agreed time;
2. The design increases safety during heavy snowfall and rain, snow falls in small layers. Without lingering or freezing, the water pours in an even stream;
3. Installing the valley does not take much time and effort, especially if you work in several hands;
4. It is desirable to connect the slope to the roof drainage system. This will help improve the performance of the valley.

Video: device and installation of the valley

Valley construction

The roof valley structure is quite easy to install. We propose to consider the plan of the rafters for gable roof with valleys, step-by-step structure:

1. Attach a high, stable ladder to the roof, preferably supported on the ground. Then clean the place of work with a brush, brush or damp cloth;
2. The device of a valley roof made of metal tiles requires accurate measurement of dimensions. A typical gutter fold should be approximately 14 cm wide;
3. We start from the top, you need to go under the ridge and remove the tiles or roofing sheeting. Remove 15 centimeters of shingles on each side of the slope (where the valley will be located), the optimal removal length is 20-30 centimeters. To quickly dismantle, you need to insert a bar under the nails. Pry it off, and then pull out the fasteners with nail pullers or pliers.

Photo - Endova on metal tiles

Installation technology

Material connection

The basic rules for installing a roof valley are to work with special tools. It is advisable to buy 100-200 nails, construction screws, head pads. We do not recommend using metal-plastic or polyvinyl chloride for the construction of gutters. These materials are short-lived. The assembly of such drains, of course, is carried out faster, but repairs are more expensive, in addition, in this case, you are not insured against possible troubles:

1. Fracture of the central part of the valley, as the most loaded area;
2. Crack along the entire length of the gutter;
3. Break off the upper part (at the root).

You need to know how to carry out the termination correctly inner corners gutters. To do everything right, you need to bend the sheets in the direction of the roof, but act very carefully so as not to break them off. In this case, the roof unblock is connected to the joint. It is not necessary to part, so you reduce the support functions of the cover.

Photo - Endova for the roof

Roof endowment is a must-have structure for almost every house, you can buy ready-made structures or materials for individual construction in any building hypermarket or on the market.