How to make the junction of the roof to the wall. Junction for roofing

After completion of the work on the metal tile or roll roofing, it is necessary to install a junction bar with a protective coating of zinc or polyester. This process is also known as the installation of pressure aprons.

The junction bar performs 2 tasks:

It does not allow moisture and rain drops to fall into the space under the roof, as a result, complete sealing of the coating is observed.

It securely fixes the edges of the roof, not allowing gusts of wind to lift the edges of the roofing

Master Listogib  manufactures contiguous planks of any complexity and configuration. The term of production of a product is from 10 minutes.

To calculate the price for manufacturing the junction planks, contact our manager, use or

Types and stages of the junction bar installation

Shaving method

When using the shaving method, one edge of the junction is inserted into the wall to a depth of -1.5-2cm (Tip: if you have plaster, you must increase the size of the edge of the product to the thickness of the plaster. Minimum value: 1.5 + plaster thickness \u003d length of the winding edge) Pay note that the edge of the product must enter the wall at an angle of approximately 110 °. The presser apron is attached to the wall of brick or concrete using dowels, with an interval of 0.3-0.6 meters. When installing a galvanized jogging bar, this element with a width of approximately 100 mm must have stiffening ribs at both edges. For shtrobleniya when installing the junction bar, you need to use a grinder, and in the process withstand the correct angle of inclination, then the raindrops will drip onto the belt and continue to flow onto the roof instead of going into the wall of the house.

Method of bitumen isolation of the junction joint

The clamping aprons, when connected to steel surfaces, or in those cases when the gouging cannot be carried out, are additionally insulated at the joints using bitumen mastic. When mounting the junction, the edge of the plank rests tightly against the wall surface, screwed with roofing screws, or use a dowel nails, then all joints are coated with a bituminous sealant trying to cover the joint with an even continuous layer (Tip: try to use a Skeleton gun to apply an even, non-crumbly for this purpose waterproofing layer).

This is especially important when mounting the junction on a horizontal roof, as well as fixing the pressure aprons in the ventilation system shafts, since it is in these areas that most often leak.

  Junction strips

Simple contiguity plank

A simple junction bar is divided into two types, for metal tile and for a bituminous roof.

For the installation method by the gate and for the method of bitumen insulation of the joint, a simple bar is made in different configurations.

(Advice: when using the shtroning method, be sure to fill in the strobe with bitumen mastic to prevent premature destruction of the structure from moisture ingress into the strobe.)

Double junction bar

The double junction consists of two parts:

1) Top bar (visor)

2) lower plank (outflow)

The double junction bar, as well as the simple one, is manufactured in two forms, for metal tile and for bituminous roofing.

But unlike simple planks, a mixed type is always used during installation. As shtrobleny and bitumen insulation.

After several tests, our specialists proposed a method for the most reliable installation of a double junction bar.

The installation manual for the double abutment plate looks like this:

1) To produce chipping using a grinder, at an angle of 110 to a depth of 1.5-2 cm.

2) Fill the strobe with bitumen mastic

3) Attach the bottom plate tightly (low water) into the gate and fasten the dowel to the wall with nails.

4) Fasten the dowel with nails to the upper bar (visor) above the groove and to lubricate the joint with the wall with bitumen.

Thus, we get double insulation of the joint between the roof and the wall, we close the not-always-smooth strobe and, most importantly, protect the strobe from moisture ingress, which is especially critical in the winter season, thereby significantly spilling the life of the entire structure.

Adjoining chimney

Apron adjoining chimney

Apron adjoining the chimney, a mandatory element of roof protection. It is the abutment of the pipe to the roof in most cases becomes the headache of the owner and the place of leakage of the roof covering. It is very important to install an apron in compliance with all the rules and subtleties of waterproofing. For waterproofing the joint of the chimney with the roof should not use soft materials on a flexible basis. Flexible materials, such as roofing, valleys and bitumen-based ribbons, are susceptible to drying, which leads to cracks and fractures at the joints, due to shifts of abutting surfaces. Give preference to aprons of sheet steel. They are well proven for use as a junction, are not subject to drying and cracking, with proper installation do not rust and are usually designed for the entire service life of the roof covering. (Advice: use a double junction for organizing a chimney apron, do not neglect the method of shaving, although it is more laborious than the method of bitumen insulation of the joint, but it will last much longer. Remember, shifting the chimney is much more expensive)

• Assembly of the junction bar
• Adjacent device for a soft roof

One of the types of additional elements - the junction bar for the roof - performs a protective function from the effects of the external environment, protects the roof from mechanical shocks and destruction.

Work on the installation of the junction bar must be carried out by specialists, as this is one of the most complex and important work.

There are 2 types of junction of the roof: the top and side. For their implementation, use docking strips having the following notation: PS-1 and PS-2.

Carefully follow the construction of the lines connecting the roof with a chimney, a visor, a canopy and a ventilation pipe. In these places rain and melt water may accumulate.

The bar is mounted, if it is necessary to adjoin the roof to the wall and in the places of joints with the pediment, in the places of the roof break. It seals the joints and acts as an element of the roof decoration. Levels of an adjunction are used for a roof from a professional flooring, a metal tile, a flexible tile.

The slats are made of metal painted to match the roofing materials used. They are mounted on screws using the seal.

Assembly of the junction bar

Fastening of the jogging bars is carried out using tools such as:

• roulette;
• hammer;
• screwdriver;
• bulgarian;
• rail;
• sealant;
• marker;
• self-tapping screws;
• pliers;
• sealant.

The process of mounting the top slats on a direct fracture of the roof is carried out in several stages:

1. In the place of a break, the elements of the crates are fastened as close as possible to one another.
2. Sheet metal is laid in such a way that its edge protruded slightly over the fracture, covering it.
3. The junction plate is laid on the lower ramp with the rolling side.
4. A universal seal must be laid between the bar and the metal tile sheet.
5. The plate is fixed with screws.

In places of reverse fracture of the roof, lower strips are used as a mating element. The installation of the reverse fracture according to the technology is the same with the device for hermetic connection to the chimney.

Works are carried out in several stages. First, perform the installation of an internal apron:

1. Put a marker marking the upper edge of the mating element on the walls of the pipe.
2. On the applied line with the help of the grinder, the strobe is pierced with a depth of 13-15 mm.
3. The resulting recess is thoroughly cleaned of dust and dirt, washed and laid a layer of waterproofing.
4. The bar is laid on the pipe along the bottom wall, leading the upper edge into the prepared shter. The mating element is treated with silicone-based sealant and fastened with dowels. The slats are overlapped, it is treated with silicone sealant, the overlap is 150 mm.
5. In the same way, an inner apron is installed on the other sides of the chimney.
6. For the flow of water is set flat sheet. This design is called a tie. It is placed under the lower edge of the inner apron.
7. On the edge of the tie with pliers and a hammer form a rim. Sheets of roofing material laid over the inner apron and tie.

Installation of the top junction is carried out before the completion of roofing work. With her perform outdoor decorative apron. Its upper edge is attached directly to the wall without piercing the grooves. The outer apron removes water from the roof and gives it an aesthetic look.

Experts of high qualification consider the work on arranging the places of junction of various elements of the roofing structure to the roof itself as the most difficult and responsible. This fully applies to the metal junction bar. On the basis of practice, one can confidently assert that it is precisely these places that are most often subject to leaks. Therefore, it is necessary to scrupulously comply with all the requirements of roofing technology.

The junction of the junction for the roof are divided into two types: upper and lower. Particular attention is paid to areas in which elements of the roofing system are connected to the ventilation channels and chimneys, canopies, canopies, etc. The reason for such attention is that it is in these areas that a large amount of moisture is observed due to precipitation in the form of rain and snow, followed by its melting.

Each type of roofing system requires a special method of sealing joints. Consider them in more detail.

The upper level of the junction is fixed in those places where the roof joins with various fragments of the roof - parapets, canopies, pipes, etc. The decorative role is assigned to it. For the manufacture of parts used galvanized steel, painted in the desired color.

Metal junction bar is designed for use with various types of roofing material:

• professional flooring;
• metal tile;
• shingles.

Assembly work

The junction bar is installed in problem areas. It:

• transition of the roof to the gable;
• docking with vertical partitions;
• connection with pipes and other decorative structures;
• docking with base and fencing (if siding is used).

At the same time, experienced roofing specialists recommend paying particular attention to joints with pipes, these are the areas that are most vulnerable in terms of moisture ingress.

To ensure reliable sealing of connections, it is necessary to create aprons - external and internal. To install the inner apron, the lower junction bar is taken, after which the roofing can be laid and fixed. This level is necessary for joining the sections of the roof. It is used both in order to seal the joints of the roof with chimney and ventilation pipes, other structures on the roof, and to divert water flows in the corners formed by the joints and gable.

The lower junction for roofing is used when materials such as metal tiles, various types of soft roofing and profiled flooring are used.

The upper and lower abutting strips differ in mounting method. The top is installed at the end of the work with the top layer of the roof, while one edge of the bottom plank is placed under it.

Assembly production procedure

1. The lower bar is applied to the pipe wall section with the upper edge removed. Using the grinder, the site is stitched, making sure that the strobe does not pass along the seam of the brickwork.
2. The gate is made to a depth of approximately 1.5 centimeters. After thorough cleaning of the dust generated during the shaton, the strobers attach a small slope to the top.
3. Install strips, fastening them with screws. At the same time, the dimensions of the self-tapping screws must be corrected, cut if necessary, directly at the place of attachment.
4. Arrangement of apron around the chimney pipe. The overlap should be at least 150 mm to prevent the ingress of water inside. Heat-sealant is usually used to seal the edges of the slats.

The company KrovlMarket offers high-quality elements of roofing systems at low prices. The price of the junction for the roof is low, but the rejection of its use is fraught with very unpleasant consequences. Under the influence of moisture, roofing structures will begin to gradually deteriorate, shortening the life of the roof and the building as a whole.