The junction of the roof to the chimney pipe is a rather complex roofing element from a technical point of view, the correct execution of which largely determines not only the service life of the rafter system, but also the comfort of living in the building. If you don't have any personal experience roofing and tin work, it is better to use the services of professionals - mistakes become the cause big problems, eliminating them requires a lot of time and money. In the most severe cases You will have to do unscheduled repairs to the premises and rafter system.

There are a great many options for solving the problem of roof abutment, each professional master makes changes taking into account specific features and his skills. But there are several factors that have a critical impact on the technology of work.

The passage of the chimney through the roof - the main nuances of the arrangement

Roofing type

To cover roofs, soft roofing materials, profiled sheets, piece natural or artificial tiles, and asbestos concrete sheets are used. Each coating has its own nuances in the manufacture of junctions; both standard components produced by coating manufacturers and home-made ones from galvanized steel can be used for them. steel sheets or rolled soft materials.

Roofing material	Minimum slope angle, degrees
Corrugated sheet	20
Ruberoid	3-4
Metal tiles	25
Asbestos cement slate	20-35
Ceramic, concrete tiles	25
Euroslate (ondulin)	6
Bituminous soft tiles	11

Roofing materials - types and photos

Prices for metal tiles

Metal tiles

Type of rafter system

Depending on the architectural parameters, the roof can be flat, inclined, domed, etc. Depending on the type, the slope of the rafters, the type of base and sheathing for roofing materials, and the location of load-bearing elements designs. All these features must be taken into account when choosing materials and technology for connecting the roof to the chimney pipe.

Chimney parameters

Chimneys are made of brick, concrete blocks, metal or asbestos-cement pipes. Structural differences affect not only the technology for carrying out adjoining work, but also the choice of materials. Additionally, during the manufacture of the junction, the location of the chimney must be taken into account.. If it is close to the ridge, then you need to use one technology; if it is closer to drainpipes, then you should work taking this factor into account. This applies not only to the method of water drainage, but also to the materials used for sealing.

There is one more feature. Brick chimneys can have smooth side planes or with special steps for water drainage. Depending on the method of laying the chimney, a specific algorithm for making the roof connection is selected. Some types of brick chimneys do not require gating.

Connection installation time

Work on waterproofing the junction can be carried out during the installation of the roof or after. There are ways to seal a chimney without the need to dismantle the installed coverings; all elements are laid on top of the existing roof.

As an example, consider three options for manufacturing junctions on various types roofing materials: brick chimneys over soft tiles and metal tiles, and round over finished roofing. These are the options that are most often encountered during the construction of private houses. The algorithm for performing the work allows you to perform it yourself without the involvement of expensive specialists. But only under one condition - you have experience covering roofs, necessary materials and tools.

Important! All work on roofs should be carried out only in good weather; the temperature cannot be lower than +5°C.

Step-by-step instructions for connecting a chimney to soft roofs

To create a joint, you will need pliers, a medium-sized flat spatula, a mounting knife, a hammer, a screwdriver, scissors for cutting metal, a hair dryer, measuring instruments and devices. A mastic based on modified bitumen is used as a waterproofing agent; for the sealant, you can use a special mastic in a tube or any other material based on impact-resistant external environment polymers. If you have an air gun, great, it will be easier to work. If for some reason you do not have special device, then the nails can be driven in manually.

Practical advice! There is no need to buy expensive tools to make one or more connections. They are used only professional builders on an ongoing basis.

Installation technology flexible tiles involves installing a fillet, plinth or diagonally spread 50x50 mm beam near the chimney. The elements are fixed to the sheathing, pressed tightly against the planes of the chimney and screwed in this position. A waterproofing layer (underlayment) is installed on top of the elements, and individual pieces are glued with bitumen. Chimneys made of piece masonry materials must be plastered, allowed to dry and primed with any bitumen-based material. It is advisable to install the junction unit simultaneously with the installation of the soft roof - this not only simplifies the work, but also guarantees tightness.

Prices for underlay carpet

Underlay carpet

Step 1. Install the shingles in the usual manner until they meet the fillets. If one edge extends onto the surface of the element, then it must be cut off assembly knife. Make a vertical cut along the corner of the chimney, and a horizontal cut along the bottom line of the fillet. To prevent damage to the underlayment when cutting soft tiles, always place a piece of plywood under the knife blade. Guide the tip of the knife exactly along the fold line of the roof. Cutting soft tiles is quite difficult; use strong and sharp knives.

Step 2. Additionally, seal all corners of the chimney with patches. How it's done?

It is recommended to seal the chimney passage unit using patterns from the remaining pieces of the valley carpet. In terms of its performance indicators, it better meets modern requirements. In extreme cases, it is allowed to use patterns from the lining carpet.

Step 3. Place a piece of carpet at the bottom of the chimney and mark it the width of the chimney. The length of the pattern must correspond to the sum of the height of the sealing on the chimney and the length of the material under the soft tiles. Practitioners recommend taking it with a reserve; a longer length will not cause problems for further work, but a too short pattern can cause leaks. Put it in place, bend it and use your finger to find the connection points of the fillet with the slope and the chimney. You need to cut the pattern at these points.

The height of the establishment beyond the vertical must take into account the climatic conditions of the location of the house and the maximum height of the snow cover, but be at least 30 cm, the establishment beyond the horizon - at least 20 cm. To these dimensions you need to add the length of the fillet. The width of the pattern depends on the parameters of the pipe; the length of the side parts of the envelope is at least 20 cm.

Practical advice! If it is difficult for you to immediately make a pattern on the valley material, then prepare a template on thick paper. This will make it possible to get practical experience and avoid annoying mistakes in the future. You will find out in which places you need to make bends and which ones to cut off completely, you will see optimal width hems, etc.

A more accurate pattern can be made on a flat surface, transferring the location of the points of the cutting lines and bends using a square and an ordinary nail.

Step 4. Gently coat reverse side each pattern with a special mastic, do not leave gaps. Layer thickness is approximately 0.5–1.0 mm. Modern mastic will reliably glue the pattern to the chimney pipe, allow it to withstand wind loads, and prevent water from coming under protection.

Prices for mastic for tiles

Mastic for tiles

Patterns must be glued taking into account the direction of water flow. The front one is installed first; its lower part should cover the top of the shingles. All the water from the chimney will subsequently flow onto this element. Next, the side patterns are fixed; later they will be covered finishing coat. The last thing to cover is the back surface of the chimney.

Important! To improve the quality and reliability of gluing, professional roofers recommend using a hair dryer. All joints are carefully bent, heated and re-glued; due to this operation, adhesion between surfaces is significantly increased, the mastic hermetically covers the stone chips located on the material.

Step 5. Insert the upper metal strip into the chimney groove to fix the position of the pattern. The planks are sold complete with the roof; if you don’t have them, the elements can be made independently from any galvanized and color-painted coating metal profile. The strips are fixed with dowels; they not only increase the tightness, but also eliminate the possibility of the patterns being torn off from the surface of the chimney.

Step 6. Carefully seal the junction of the strip with one-component polyurethane sealant. Try to fill the cracks to the full depth; remove excess with your finger.

After gluing all the parts to the chimney, you can continue laying the flexible tiles. The shingles are cut evenly at a distance of 5–8 cm, not reaching the lower edge of the fillet. The side cut of the tiles must be coated with mastic, the same operation must be done in all places where there is no self-adhesive layer. The edge of the cut shingles serves as a groove that guides rainwater in the right direction. The last tiles to be laid are on the back side of the chimney, then work continues on the entire roof.

Bypass of a chimney pipe on a metal profile roof

Initial data: unplastered chimney sand-lime brick, galvanized steel is used for the work.

Practical advice! For the connection, it is better to buy a standard sheet profile for the groove with dimensions of 15x23 cm, the width of the shelf for the groove is 2 cm, the width of the bend of the drainage grooves is 1.6 cm. The profile is galvanized, the zinc thickness is at least 20 microns.

Step 1. Place the profile against the pipe with the side on which there is a curved shelf for entering the groove. Using a construction marker, draw lines around the entire perimeter of the chimney.

Step 2. Using a grinder with a diamond blade, cut a groove at least 2 cm deep. Work carefully, try to make the cuts as even as possible.

Important! Follow safety precautions when working with a cylindrical grinder. Never remove the protective cover and wear glasses. Remember that the disk should rotate towards the worker, and not vice versa. If the direction of rotation is not observed, then during biting the tool will be thrown onto the worker, this can cause very serious injuries.

Step 3. First install the galvanized sheet from the bottom junction of the chimney and the base of the metal tile deck to the eaves. It will drain all the water around the perimeter of the pipe. The chimney can also be lined at the bottom; if this is difficult to do, then place it close to the brickwork.

The first element is galvanized sheet

Step 4. Place the bottom joint on top of this sheet. This order must be observed for any method of draining water from the chimney. When installing sheets along the perimeter, one sheet is folded under the other, which prevents moisture from entering the junction areas. How to take sheet dimensions and prepare a pattern?

This completes the cutting process.

Step 5. Place the cut piece in place, bend its side tabs so that they are pressed as tightly as possible against the surface of the pipe. To do this, you need to bend the profile shelves on the folded tabs, which are inserted into the groove. Make sure that the metal fits as tightly as possible to the surface of the chimney, and do not allow gaps to appear. The reason for their occurrence is wrong taken dimensions. If the gap does not exceed 2–3 mm, then there is nothing to worry about, just take into account errors in the future. If the gap is large, you will have to repeat the measurements and cutting the profile.

Step 6. Proceed to form the side junction. Align it with the bottom one, make similar markings for bending and cutting the sheet. Remove excess areas.

Step 7 Place the finished part against the pipe and secure with dowels. Dowels must have rubber gaskets for sealing.

Step 8 Carefully bend the protruding elements onto the lower part of the outlet, and use a wooden or metal hammer to press them together as firmly as possible.

Practical advice! Experienced roofers coat the joint line with sealant before bending. This operation does not take much time, and the reliability of sealing increases significantly. We recommend that all beginners use this technology; they do not yet have enough practical skills in working with metal sheets. As a result, the joints are uneven and water can flow into the cracks.

Install the connection on the opposite side of the chimney in the same way.

Step 9 Proceed with the installation of the closing upper abutment element. It is done according to the same principle as the first one. The only difference is that the bend angle of the profile must be reduced, and in the side bends at the angle of the roof, the upper part, rather than the lower part, must be cut off.

At this point, the fixation of the metal abutment elements is completed; proceed to filling the grooves with sealant. Make sure that the kinks along the edges of the metal sheets fulfill their function and direct the flow of water downward.

Connecting a round chimney to the finished roof

We have already mentioned that this is not the best option construction, but life often dictates its own rules, you have to solve problems as they arise. Initial data: pitched roof with bitumen shingles th, chimney of circular cross-section.

Step 1. Find the exact location of the chimney pipe exit on the roof. To do this, you need to attach a plumb line to the flooring, align it with the center of the stove pipe and make a mark. Drill a through hole according to the mark; working from the roof is much easier.

Step 2. Using a spatula, carefully pry up the shingles and unscrew the screws. If soft roof fixed with nails, the work will become somewhat more complicated. Dismantle the roof using the same method; the dimensions of the freed section of the roof should be 30–40 cm larger than the diameter of the pipe. Soft tiles fold carefully in a free place, all of it is reusable.

Step 3. Proceed with installation of the passage element at the chimney outlet; it must be fireproof and airtight. The elements are sold in specialized stores; it is much more profitable and reliable to use factory products than to invent various devices yourself. The kit includes a pass-through element made of high-strength polypropylene, heat-resistant rubber and metal clamp.

Step 4. Cut a hole in the heat-resistant rubber to fit the diameter of the chimney. To facilitate work, rings with the indicated diameters are cast on the upper surface of the element. Pierce a small hole with a knife, and then you can cut it with scissors.

Step 5. There are special lines on the penetration that indicate different roof slopes. Find the mark with your slope and cut the hole. The plastic is very hard; use metal scissors for cutting. Due to this placement, the chimney will be in a vertical position.

Step 6. On the base of the roof, find a hole pointing to the center of the chimney, place the penetration on continuous sheathing and install it in such a way that the centers are located on the same vertical line. Mark the diameter of the hole to be cut for the pipe using electric jigsaw cut out the slab.

Step 7 Place the passage element in place and secure it with self-tapping screws to the continuous sheathing.

Step 8 Install the chimney, put a rubber sealing casing on it. Pay attention to the location of the technological mark; it should face forward. Place the metal clamp and tighten it. There is no need to apply much effort; the rubber compresses easily, and too heavy loads can cut it. Assemble the chimney and install all the special elements on it.

A strip of lining layer is inserted into the gap

Step 10 Replace the shingles and trim off any excess. To guarantee, coat the joints with a high-quality compound.

Prices for popular models of screwdrivers

Screwdrivers

On this installation work finished. To check the reliability of the seal, it is recommended to pour several buckets of water onto the roof.. If leaks are detected, they should be repaired immediately. Doing this in a timely manner is much more profitable than later dealing with unscheduled repairs to the rafter system or roof.

Video - Joining flexible tiles

Video - Chimney. Adjacency

Video - Bypassing a chimney pipe on a metal roof

The parapet is an integral part of the roof of many houses, complementing their design. It has a certain height, which may vary depending on the situation. At the junction of this protective border with the roof, the roof is connected to the parapet, which must be followed according to all the rules.

Although the parapet is not one of the main parts of the house, it performs well the protective and aesthetic functions. This is a small wall that is installed around the perimeter of the roof and looks like an enclosing structure. This design is suitable for both pitched and flat roofs. In the first case, the parapet is built above the cornice and is clearly visible from below. In the second case, a small barrier completely blocks the roof from view. So that the parapet is not damaged by precipitation and air currents, this elevation is covered with an apron, which can be made of galvanized or copper sheet metal. Structurally, it is equipped with special drips that drain water from the building. Drip pipes prevent water from entering protected areas of the parapet.

There are options for brick or concrete parapets, covered not with metal aprons, but with concrete slabs.

Principles of connecting the roof to the parapet

To ensure that aprons made of galvanized metal sheets are securely attached to the fence, grooves and niches are created in the parapet structure. The upper edges of the aprons, which are curved into profile products, are inserted into these grooves metal sheets. Aprons can also be used from black steel for roofing, but it must be painted on all sides using heated drying oil. Niches and grooves are provided for construction-necessary construction. It is known from practice that a single roofing sheet is not enough. This is due to the fact that vertical sections are not always level. In addition, the fastening is negatively affected by unstable temperature regime and precipitation. Due to these negative phenomena, the apron may not fit tightly to the curb. With the help of grooves these problems are solved.

• When the edge of a sheet made of one material or another is inserted into a niche, its height must be at least 0.1 m.
• If grooves are used to install the apron, the latter is sealed cement-sand mortar, which protects the structure from precipitation.

At a distance of 1 m from each other along the length of the parapet, install wooden corks, impregnated with antiseptic. Bars having a triangle shape in cross-section are attached to the plugs. The top of this structure is covered with an apron.

• The apron fragments are laid in the direction in which precipitation will flow, with an overlap of at least 0.1 m.
• If the roof is flat, then its junction with the fence is covered with waterproofing in several layers. Mastic waterproofing requires reinforcement. Geotextiles or glass-based materials are best suited for these purposes. During installation, an overlap of 0.15 m is made. The material is pressed against the vertical surface. Then the resulting structure is coated with emulsion or mastic. After the fastening agent has cooled, a second layer is laid on top of the first one. To prevent the “layer cake” from slipping, it is secured with a metal apron, which, among other things, serves protective function. The drawing clearly demonstrates how the junction of mating surfaces is arranged.

Connection device with soft roof

When connecting to a roof parapet roll type Special attention it is necessary to pay attention to waterproofing - it must be reinforced. During installation roofing the material must be placed on vertical wall. When laying the material at the junction of the surfaces, there must be a special support.

In the absence of an auxiliary side, a vulnerable cavity is formed at the junction of the roof and parapet surfaces. In this place, the flooring can be easily damaged under mechanical stress, resulting in depressurization of the coating.

• To avoid problems associated with damage to the roofing material, the joint between the surface of the roof and the parapet is laid with a supporting side, which has 2 angles of 45º in cross-section. Its construction is made from a mixture based on cement and sand. Instead of this support, you can place it impregnated with a bio- and fire-retardant agent. wooden block, which in cross-section has the form of an isosceles triangle. Thanks to this side, the coating material will adhere tightly to the entire adjacent surface.
• If the waterproofing material is roofing felt, then using hot bitumen mastic roll material it must be glued to the entire surface of the roof, starting from its base and ending with the parapet wall, including the side. After some time, the operation must be repeated, covering the roof with a second layer of roofing felt. During the construction of the parapet in its inner surface a special groove is installed. When connecting two surfaces, the edge of the roofing material with outside is inserted into the groove made. It is possible to have an adjoining unit with roofing felt placed on the upper section of the parapet.
• If the edge of the roofing strip extends into the groove, the material must be secured with a metal strip, which will press the roofing material against the wall using dowels. This part and the joint are sealed with sealant. The next layer will be paint, protecting the structure from precipitation. At the end, a metal apron is put on the parapet, which can be attached to the bar.
• In the option of installing roofing felt at the top of the parapet, the roofing material is first fixed with heated bitumen and then covered with an apron or slabs.

There are technologies for joining these surfaces using mastic agents that have hydrophobic characteristics. With this treatment, the coating is created without seams, and the junction is reliably sealed.

Video

Installation of the junction to the parapet, if a ventilated facade is made:

As is known, the most susceptible negative impact moisture in those areas of the roof where the coating is in direct contact with the wall. Therefore, precisely in the place where the roof meets the wall, the sealing of the joint and its protection must be carried out at the highest possible level.

It is customary to distinguish two main types of junctions - top and side, and the construction of each of them requires the use of joint strips PS-1 and PS-2.

The need for roof connections

It is very important that all elements of the structure that are in one way or another adjacent to the roof (ventilation and chimneys, canopies, walls, awnings, etc.), were arranged according to a special plan. As you know, these places are most susceptible to the active accumulation of any moisture.

Inconvenience is also often caused by debris, branches and tree leaves that accumulate in places where the wind blows the strongest. IN winter period Over time, the junction of the roof and the wall experiences severe loads under the influence of snow.

After the installation of the roof truss system is completed, it is only necessary to equip the roof with the necessary covering.

Metal tile flooring must be laid while maintaining a small gap near the walls. This is done in order to provide the entire structure with normal ventilation, while doing the right thing. After this, a groove having a depth of approximately 2.5 centimeters must be created in the wall canvas by gating. The joint strip is equipped with a special seal, and then tightly fixed in the groove and secured with dowels. Then the gating site is treated with a special silicone-based sealant. The abutment strip is fixed on high points tile waves using self-tapping screws or self-tapping screws.

If the roof covering is a rolled material, for example, a coating made of bitumen or bitumen with polymers, then the junction of the roof to the wall should be processed according to the following principle:

1. Pressure strips are applied to the areas where the coating meets the wall.
2. The applied slats must be firmly fixed using self-tapping screws.
3. The joint areas are treated with silicone-based sealant.
4. As an option, apply elastic mastic along with reinforcing geotextile, and a second layer of mastic on top. This method is called flashing. It has gained quite wide popularity due to the good final result of the work - the seams are elastic, durable and perfectly sealed. This method is relatively inexpensive, and it can also be done with your own hands, without involving extra labor and without spending money on paying specialists.

The mastic should be applied to the joints using a brush or roller. This material hardens quickly, but the necessary elasticity is nevertheless preserved. The mastic adheres to almost any material without any problems.

Thanks to the polyurethane included in the material, the coating acquires additional plasticity and withstands impacts of absolutely any kind. The service life of such flooring can reach more than 20 years, and the quality does not suffer even at temperatures as wide as from -40 to +75 degrees.

For the flashing method, joints are prepared in different ways depending on the materials used to construct the roof joints, as well as their configuration. This is done as follows:

On average, about 1 kilogram of mastic is required per 1 m² of joints. The volume of primer consumption is approximately 0.3 kilograms per 1 m². It is necessary to calculate the consumption of geotextiles before purchasing it.

Installation of junction strips, detailed video:

Roof connection to other elements of the structure

If you need to seal the joints of the roofing with other surfaces of the entire structure, then the technology must be slightly different. For example, if the roof is adjacent to a parapet, then this element must be insulated.

Insulation of walls with such sealing is carried out using mineral wool. In the area where the roof connects to the parapet, another layer should be fused.

Thermal insulation sheets must be covered with particle-cement boards or slate, usually flat. Dense slab mineral wool serves as the basis for creating an inclined side, which is glued directly into the corner on top of the hot bitumen. The very first layer of roofing should bend onto a horizontal surface at a distance of 15 centimeters, and the second layer should overlap the previous one by a distance of 5 centimeters.

After this, you should begin arranging a steel apron, the main function of which is to drain rainwater. After this, the junction of the roof and the wall will have a reliable and long-term seal.

Thanks to the wavy shape of this material, it is able to repeat the shape of the coating itself, that is, the tiles, and the subsequent pouring of bitumen will finally give the joints complete tightness. Tapes of this kind can also be used on bitumen shingles. Another advantage is their rich range of colors, so choosing the right shade to match the color of the roofing will not be difficult.

If you have any questions regarding how the roof should be connected to the wall or other surfaces, detailed information Photos and videos of all works can always be found on the Internet.

The point of connection or transition of one type of surface (roof) to another type (wall) in construction is called the junction or transition to a wall or parapet. The importance and quality of execution of this unit is evidenced by the fact that it is in such places, in most cases, that rain or melt water gets under the roof, where it accumulates, initiating the process of rotting of the roofing materials and is then impregnated into the living quarters.

Installation of the wall connection unit

In order to mount the junction of the roof to the wall, we may need the following tool:

• hammer drill for drilling holes;
• waterproofing materials (waterproofing);
• screwdriver;
• self-tapping screws, anchors, dowels and screws of various sizes;
• connecting strips or profiles with a seal, depending on the type of roof chosen;
• various sealing mixtures and materials (sealant);
• roller, spatula or brush.

After creating the rough surface of the roof (installing the rafters), it’s time to think and refine the junction points various surfaces. Before installing the sheathing, a layer of hydrobarrier is laid on the upper surface of the rafters, which does not allow water and dampness to pass through from the outside, and creates a space between the insulation and the roofing material. air gap, which increases the thermal insulation characteristics of the roof. Waterproofing must be laid with an overlap. The overlap is made both on the wall to which the connection is made, and under the sheathing. This should be taken care of before installing the roofing material.

After the roof sheathing has been completed and the metal tiles are fixed with self-tapping screws, using joining strips or a profile, the edge of the waterproofing material is fixed, and the joint between the strip and the wall is sealed. The sealant can be applied with a spatula or directly from the can, depending on its consistency, coverage area and operating requirements, and some sealants can be applied with a roller or brush.

Surface requirements

The surface of the wall must be primed, cleaned of dust and dirt and have flat surface. Using sealing mixtures, usually bitumen-based, the waterproofing is glued to the surface of the wall and the joining strips are secured over it. The planks are secured to the wall using anchors, dowels, screws or other fasteners. The choice of profile for the joining strips depends on the type of profile of the existing roof.

Often, roofing material manufacturers offer big choice connecting profiles for organizing the junction of the roof to a wall, parapet or other surfaces. The connecting profile can be with or without a sealant already applied. It is advisable that a layer of sealant be laid between the docking strip and the roof, which prevents water from being “blown” under the docking strip in strong winds.

If the roofing material is a so-called soft roof (bitumen or bitumen-polymer coating), then the sequence of installation of the junction is much simpler: the joints of the surfaces are fixed with slats, which are fixed with screws or anchors, and the joints are coated with a thick layer of sealant, followed by laying a layer of reinforcing material (geotextile). The number of layers of combining reinforcing cord and sealant can be increased, depending on the width of the gap being sealed, until a smooth surface is obtained.

In both the first and second cases, insulating materials, be it sealants or bitumen mastic, can be applied in several layers, depending on the required thickness.

Connecting the roof to the parapet

If it is necessary to create an abutment of the roof to the parapet, then care must be taken to securely fix the roofing material (bitumen or bitumen-polymer) to the vertical parts of the parapet. Due to comparatively high altitude Simply gluing the roofing material onto the parapet wall is not enough here.

Firstly, all surfaces must be thoroughly cleaned of dust, dirt, etc.

Secondly, all materials that have a coating (roofing felt or bitumen-polymer coating) in areas of future processing are cleaned of loose elements. Polyvinyl chloride membranes are cleaned and degreased.

Thirdly, all concrete surfaces are coated with primers to improve adhesion; the surface must first be leveled, brickwork plastered. Large cracks, chips and holes are filled with putty or plastered. Transitions from a vertical surface to a horizontal one must be smooth and with a rounding radius of at least 100 mm in order to prevent breaking of the roofing material.

Fourthly, a layer of mastic or sealing agent is applied to the base. glue mixture. In accordance with the manufacturer's recommendations, the required temperature is maintained, a certain amount of time is maintained and a layer of rolled roofing material (roofing felt or bitumen-polymer coating) is applied. If necessary, the procedure is repeated with the sheets overlapping each other and the top layer of material overlapped with the previous one.

Fifthly, a metal frame (an apron for water drainage) is installed on the top of the parapet, for which galvanized or painted metal sheets are used. It is fixed to the parapet in such a way that the upper edge of the roofing material is higher than the lower edge of the metal and is fixed together with it using anchors, dowels or other fastening materials. This apron also performs the function of fixing the edges of the glued roofing material to the parapet.

The content of the article

Places where the roof meets the wall, chimney pipes, etc. structural elements roofs are areas increased risk for leaks and is often the cause of water penetration into the under-roof space.At the junctions, debris blown by the wind accumulates to a greater extent; a large layer of snow most often accumulates here, resulting in rafter system pressure increases and the sealing of the roofing may be disrupted.

Such problem areas are sealed in several ways, depending on the type of roofing. Even at the project development stage, the junction of the roof and the wall should be provided. In the case where the wall is made of brick, during the laying of the walls a protruding canopy of half a brick is made, which should subsequently cover the junction of the roof and the wall and protect it from precipitation. Or a recess is left in the wall for a quarter of a brick so that roofing material can then be inserted into this recess.

Connecting a metal profile roof to a wall

Any profiled metal covering in the area adjacent to the wall, skylights, parapets are made leaving minimum clearance, necessary for ventilation of the under-roof space.

If the vertical surface to which the connection is made is concrete or brick plastered, then a recess 2-3 cm deep is made on it, parallel to the roof.

The processed silicone sealant apron made of steel of the same type as the roof covering. There are special ready-made strips or aprons. The underside of the strip is attached to the roofing using self-tapping screws .

The junction of the roof to the wall can be made of two aprons using the overlay method. In this case, the wall is not grooved; the upper apron is attached to the wall with dowels. A lower strip is placed under it, which engages with the upper lock connection. There are special clamps on the bottom strip, which are screwed to the roofing with self-tapping screws. All joints are coated with silicone sealant.

When installing connections tiled roof A tape made of corrugated aluminum is used to the wall. It allows you to repeat a profile ceramic tiles, and hot bitumen poured into the joint will create reliable waterproofing. Aluminum tape can be used for soft tile roofs.

Soft roof connection device

The junction points of a roof made of rolled materials are made in several ways. In one case, the rolled material is pressed against the wall wooden slats, which is fastened with self-tapping screws.

The height of the roofing felt on the wall is approximately 15-20 cm. The junction of the strip and the wall is coated with silicone sealant. To prevent a depression from forming at the junction of the roofing felt and the wall and subsequently a gap to appear, a triangular block is inserted into the corner between the wall and the roof surface or an additional layer of thermal insulation is made.

Thus, a roller is obtained that protects the roofing material from breaking through and promotes better insulation junction points. When an insulated roof is made, all layers roofing pie, in addition to insulation, are installed on the wall along with the finishing coating.

There is an option for connecting the roof to the walls using the flashing method. The essence of this method is to apply elastic mastic, a reinforcing layer of geotextile and another layer of mastic. This method is distinguished by obtaining a strong and sealed joint between the roof and different surfaces. Using these materials, anyone can make airtight joints themselves.

Before connecting the roof to the parapet using the flashing method, the surface is cleaned of debris, dust and dirt. If roofing felt with a coating is used, it is cleaned off in those places where the mastic will be applied.

PVC membrane materials are cleaned of dust and degreased. Brick walls if necessary, they are plastered, after which the layer of plaster should dry. Concrete surface Before use, mastics are treated with a bitumen-based primer. All irregularities on surfaces to be covered with mastic and geotextile must be removed, chips and cracks must be sealed with sealant.

Connections to chimneys and pipes

When connecting the roof to the pipe, a layer of mastic is applied to the prepared surface using a brush or roller, after which the geotextile is immediately laid. A second layer of mastic is applied on top of the geotextile. Drying time for each layer is from 3 to 24 hours depending on the ambient temperature.

If necessary, you can apply several layers of mastic, but each previous one must dry.

The mastic contains polyurethane, which is a plastic material that is resistant to both high temperatures, and to low. The range of application of such mastic is from -40 to +75 degrees. The durability of waterproofing mastic is estimated at at least 20 years.

The connection of the roof to a chimney or parapet occurs using a slightly different technology than to a wall. The chimney pipe passes through ceiling and the roof itself. Therefore, in each case it is necessary to seal the pipe passages. Connecting the roof to the chimney pipe is probably the most complex, responsible and painstaking task in roof construction and therefore requires special care.

1- soft roof, 2 - lining carpet, 3 - base, 4 - sheathing, 5 - timber 50 to 50, 6 - waterproofing, 7 - rafters, 8 - insulation, 9 - timber 50 to 50, 10 - vapor barrier, 11 - edged board, 12 - hemming, 18 - junction strip, 19 - pipe, 23 - valley carpet

• On the upper side, the sheathing near the pipe is laid horizontally.
• fits on it waterproofing material, both edges of which extend onto the pipe on one side and under the roofing on the other.
• In addition, at the junction of the sheathing block or board to the pipe, a triangular wooden block is placed under the waterproofing material.
• Where the waterproofing extends onto the vertical surface of the pipe, its edge is coated with sealant and covered with a metal wall strip on top.
• The strip can be attached with dowels to the pipe or go into the groove and be filled with sealant.

Features of repair work

It is easier to repair roof junctions with roof structural elements using the flashing method, the technology of which is described above. The basis of this method is the one-component mastic Hyperdesmo - RV-1K, consisting of bitumen-polyurethane substances. Its advantage is that it can be applied to any surface of a wide variety of shapes, creating reliable waterproofing everywhere that will serve for many years.