Do-it-yourself flat roof repair. Flat roof repair: an overview of possible damage and how to fix it. Roof leak detection

The coatings used in the construction of flat roofs are characterized by a high service life. However, most roll and membrane materials have to be changed before the expiration of the declared service life. This is largely due to the occurrence of various types of damage that form on the roof during the operational period.

Types of damage to roofing

The main cause of damage to the roofing carpet is the poor quality of installation work and the use of cheap materials, the quality of which does not correspond to current operating conditions. Lack of regular maintenance also results in both minor and critical damage requiring immediate repair.

The most common types of damage flat roof include the following:

In order to prevent the condition roofing It is recommended to conduct a scheduled inspection of the front surface of the roof. When problems are found, a decision must be made on how to carry out repairs in order to prevent further damage from occurring.

Flat roof repair methods

Depending on the type of defects and the area affected by damage, it is customary to divide works on the restoration and repair of flat roofs into the following groups:

current repair - local work performed when small defects and damages are found in the roof system. Basically, a partial replacement of the damaged roofing is carried out, the removal of delaminations and blisters;
overhaul- represents a complete replacement of the current insulating layer and roofing material, including a full cycle of preparation working surface for further laying of a new coating.

The basis for a major overhaul is the presence of various types of damage on more than 40% of the total flat roof area. Unlike local works, capital repairs require a significant investment, which is comparable, and in most cases exceeds the cost of laying a new roofing.

What material to use for repair

The technology of installation and repair of flat roofs involves the use of various materials. The use of a particular material is determined by the current state of the roof and the coating that was laid or applied earlier.

Capital repairs of a flat roof are carried out in all cases when more than 40% of the total roof area is damaged

In general cases, the following technologies are used to repair flat roofs:

screed repair - used in cases where the concrete floor slab is badly damaged and a full-fledged heat-insulating cake is required. In this case, a vapor barrier membrane, mineral or foamed insulation, fine expanded clay, concrete mortar, primer and insulating coating are used for repairs. For mixing the solution, it is recommended to use sand concrete M300, produced under the trademarks "Polygran", "Master Garts" and BESTO;
repair using roll coatings - used for the restoration of flat roofs of various configurations. Various analogues of roofing material or PVC membrane are used as roll coatings. Among the bituminous roll coatings, one can note the products of the TechnoNIKOL corporation under the brands Stekloizol KhPP-2.5, Technoelast KhPP and Uniflex EPP. As a roofing polymer membrane, it is better to use a coating under the trademark Ecoplast V-RP or Logicroof V-RP. To work with derivatives of roofing material, it is necessary to have gas burner, and for laying PVC-membrane - adhesive composition and building hair dryer;
repair using liquid rubber - most often performed when servicing multi-storey residential buildings, since the applied material is lightweight and does not weigh down the floor slab. For use, it is possible to recommend waterproofing under the trademark "Technoprok R", Euromast Plus and Tremproof 250. Liquid rubber is applied using a special industrial spray gun. Apart from insulating material vapor barrier, heat-insulating coating and ramping are used.

When repairing a roof with a screed, it should be borne in mind that in order to mix a sufficient volume of concrete, a concrete mixer and a large number of containers for transferring the concrete mixture will be required. To distribute the concrete, it is necessary to set the linear guides. Alignment of the solution is carried out using a steel rule.

In order to understand the technology of working with various materials, consider the process of repairing each type of flat roof separately. A more general technology describing the process of maintenance and overhaul will be discussed below.

Roll roof repair

Roll coatings under the trademarks "Stekloizol KhPP-2.5", "Technoelast KhPP" and "Uniflex EPP", which were mentioned above, are modern bituminous roll materials. For their manufacture, a binder based on bitumen and filler is used, which is applied to the fiberglass on both sides. Asbagal is used as a protective front layer - a coarse-grained dressing applied to a special polymer film.

Corporation "TechnoNIKOL" produces a wide range of roll-bitumen coatings for roofing

As a rule, "Stekloizol", "Technoelast" and other bituminous roll coatings are used to protect flat roofs with a preliminary arrangement of a concrete screed. The main problems of this coating are the formation of local damage in the form of cuts and cracks resulting from improper operation of the roof. In case of violation of the technology of work, the formation of air and water bubbles is possible.

To eliminate local defects, patch repair is used when the damaged area is completely covered with a new canvas. The size of the patch depends on the area of damage.

Repair of cracks, breaks and other surface damage is carried out as follows:

If it is necessary to eliminate swellings and bubbles on the surface of the roll coating, which occur due to seasonal temperature fluctuations, then it is necessary to carefully cut the damage crosswise.

Next, you need to bend the corners of the coating so that you can dry the inner surface. After drying, the surface is cleaned and treated with bituminous mastic, and the bent edges are pressed back. Then, patch repairs are performed according to the technology described above.

Repair of membrane roofs

PVC membranes are a specialized waterproofing coating designed to protect roofs and concrete foundations. In the production of membranes, the extrusion method is used. This ensures that the final material will have zero water absorption.

Mechanical damage and depressurization of the seams are the two main problems that arise during the improper operation of a flat membrane roof. For example, with inaccurate snow removal with an iron shovel.

A special welding machine is used to lay the PVC roofing membrane.

To repair mechanical damage, you will need to perform the following work:

The area of the membrane web with damage is cleaned and treated with an organic solvent.
A patch is cut out from a single piece of the membrane, the size of which will cover the gap or other damage on the surface of the roofing carpet by 5–10 cm.
The patch is placed on the prepared section of the roof and soldered using a welding machine. During heating, the patch is gradually smoothed out with a roller.

The depressurization of the seams occurs due to a violation of the technology of laying PVC membranes. As a rule, the membrane is not warmed up well or placed “in tightness” to hide irregularities.

For repairs, it will be necessary to treat the inner surface of the peeled seams with a solvent. If required, they should be cleaned with improvised means. Next, the seams are soldered with a welding machine. If the length of the unstuck seam exceeds 5–7 m, then it is additionally glued with Eternbond repair tape.

Video: installing a patch on a membrane roof

Repair of mastic roofs

Liquid rubber, unlike bituminous roll coatings and roofing membranes, allows you to create a seamless roofing carpet. This is especially true for flat roofs of old buildings, where the preliminary arrangement of a concrete screed is impossible due to the load that it exerts on the bearing elements of the building.

Liquid rubber for roofing is a two-component composition that is mixed before application to the surface.

The main damage to the mastic roof is cracks that occur during long-term operation of the roof. For their repair, liquid rubber of a similar composition is used, which was applied earlier. For example, liquid rubber "Slavyanka" for roofing is a two-component composition, which is applied using a unit high pressure and spray nozzles.

Roof repair technology using liquid rubber is a combination of the following operations:

If extensive damage is present on the roof surface, then first of all it is necessary to eliminate local holes on the roof. After the repaired areas have dried, a second layer 3–4 mm thick is applied. If necessary, fiberglass is laid and the finishing layer of liquid rubber is arranged.

Video: spraying liquid rubber on the roof

How to draw up a budget

Before carrying out any repair work, an estimate of their cost should be carried out. To do this, you will need to prepare an estimate in electronic or paper version. This will avoid shortages or overruns. building materials required for repair work. Especially if a major overhaul is planned.

In the presence of swelling of the roofing, a cross-shaped incision is made with further processing of the damaged area

In order to make an estimate, you must perform the following steps:

measure the work surface - using a tape measure and other tools, the work surface is measured and inspected. Based on the data obtained, the total surface area in need of repair is calculated;
calculate quantity and cost Supplies- based on the current state of the flat roof, the type of repair that is planned to be carried out is selected. With this in mind, consumables and tools necessary for these works are selected;
calculate the roofing - according to the measurements and technical condition, the roofing is selected, with the use of which the repair will be carried out. Based on this, its quantity and cost are calculated;
draw up a work plan - at this stage it is necessary to consider how the material will be delivered to the site and in what sequence the repair activities will be carried out;
adjust the amount of consumables - the previously obtained amount of consumables must be increased by 15 to 20%. This will allow you to make a margin for errors in cutting and accidental damage during repair work;
choose a hardware store - prices are monitored in the construction markets and in stores represented in your region. If possible, you can contact the store directly with the estimate. The cost of delivery and unloading of the material should be added to the final cost.

If repair work will be carried out by skilled workers, then the corresponding item should be included in the estimate. It is not recommended to purchase a specialized tool for performing work for personal use. It's better to rent it. Especially if it is planned to carry out a major overhaul in compliance with the technology.

Maintenance of a flat roof

The current repair of a flat roof includes work aimed at eliminating local damage in the form of cuts, breakthroughs, cracks and blisters. In fact, these works allow you to quickly eliminate local damage without affecting entire sections of the roof.

Basically, current repairs are carried out in case of damage. soft roof, for the device of which bitumen or membrane coatings were used. Current repairs can be performed independently without contacting specialists - a minimum of tools is required here.

For the installation of a soft roof, bitumen-based roll material is most often used, which is called "Stekloizol"

As an example, we can consider the current repair technology for various local damages. To perform the work, you will need a bituminous waterproofing material (stekloizol, euroroofing material, bikrost), a gas or gasoline burner, a sharp knife, a rolling roller, cold bituminous mastic.

The general technology for repairing extensive damage to a flat roof surface is as follows:

When using rolled coatings with built-up surface, the laying technology is similar to that described above, except that a building hair dryer is required to install the patch. The working surface of the cut patch is heated with a hairdryer until the bituminous layer becomes soft. Then the canvas is carefully laid on the hole and ironed with a roller.

The technology for eliminating cracks and minor damage to the canvas (15–20 cm) is similar - the damaged area is cleaned of protective dressing, after which mastic is applied and an overlapping patch is glued. In this case, it is not necessary to cut the damaged canvas.

Video: Installing a weld metal patch

Flat roof overhaul

Major repairs, as specified in the section above, are appropriate when damage and defects are present on more than 40% of the total flat roof area.

The essence of the overhaul is the complete replacement of the current roofing material. If necessary, a complete replacement of the roofing pie can be carried out, including steam and heat insulation, as well as a screed.

Dismantling of the roofing is carried out using special equipment

As an example, consider the overhaul of a flat roof with the further laying of a welded roll coating. To complete the work, you will need a seam cutter, a chipper, a concrete mixer, a gas burner, a shovel, a laser level, metal rule.

The overhaul technology consists of the following:

A complete dismantling of the damaged roll coating, PVC membrane or liquid rubber is carried out. For this, a grinder, a wall chaser and a sharp ax with a metal handle are used.
The working surface is cleaned with hard brushes, shovels and grinders. The removed roofing material is cut into small sheets, after which it is stored in a separate place. If possible, the dismantled material is transported to a landfill.

After dismantling, the old roofing must be taken to a specialized landfill.
A visual inspection of the working surface is carried out, during which its technical condition is determined. If the surface is represented by a concrete screed, then in most cases it must be dismantled.
The concrete screed is being dismantled. To do this, the concrete surface is marked with a seam cutter. To remove the concrete layer, special chippers are used.
Construction debris is being cleaned and the roof surface is being prepared for pouring concrete screed. For this, shovels, brooms and other equipment are used. After cleaning, the surface is wetted with water.
Linear guides are being installed. For this, special steel beacons are used, which are mounted on dowels or a cement-sand mixture. When installing, a slope (3–5%) is observed from the center to the edges of the roof or vice versa.

Roof screed is carried out according to pre-equipped guides
A concrete mixture is being prepared based on cement grade M300. If possible, it is better to use ready-made dry mixes from the manufacturer. As reinforcement, in order not to weigh down the concrete floor slab, microfiber is used, which is added to the mortar during mixing.
Concrete screed is being poured. To do this, the mixture is fed in portions starting from the center of the roof. For distribution, a steel or wooden rule is used. During work, the screed is checked by level for compliance with the required slope.
After pouring and distribution, the concrete screed is covered with polyethylene. In this state, the roof surface must be moistened with water 2-3 times a day for 7 days. The total drying time of the concrete layer is 28 days.
After 2 weeks from the moment of pouring, the linear guides can be dismantled. The resulting voids are cleaned and overwritten with a similar composition concrete mix.

Laying a roll or membrane coating is carried out only after the concrete screed has completely dried.
After the screed has dried, the surface is cleaned of abrasive particles. After that, the vapor barrier is laid diffusion membrane. The vapor barrier is laid with an overlap of 10–15 cm relative to the adjacent row.
Laying in progress thermal insulation material in the form of mineral or basalt slabs. If it is planned to install an operated roof, then it is recommended to lay cotton wool in slabs with a density of at least 50 kg / m 3.

A mineral or basalt wool insulation is laid on a concrete screed
Thermal insulation boards are laid end to end. If necessary, the second layer is laid in a run-up so that the joints of the first layer do not coincide with the joints of the second.
A thin-layer concrete screed (3-4 cm) with fiberglass is poured. The technology of preparation and pouring was described above (see paragraph 8). After the second layer of concrete screed has dried, the laying of the roofing begins.
2-3 layers of lining roll material are being laid. To do this, the canvas is gently rolled out as the working surface warms up using a propane or gasoline burner.

A gas or gasoline burner is used for laying welded roofing.
Roofing material, as well as lining, is mounted in a run-up with an overlap on the sides of the roof. If a roll coating is used, which is laid on the mastic, then the surface is first smeared with a primer, and only then the material is laid.

At the final stage, set roof aerators, gutters, junctions, cornices and other accessories and devices.

It should be borne in mind that the overhaul of a flat roof in each case may have certain features. This is largely due to the operational state of the roof, previously laid waterproofing material, etc. But in general, any overhaul consists of dismantling, cleaning and preparing the old surface, laying the underlying and roofing material.

Video: laying roofing on a flat roof

Repair of a flat roof storm drain

Gutter system private or apartment building designed and calculated long before the construction of the house. During the construction of private buildings (garages, one-story houses), as a rule, an external organized drainage system is used. During the construction of apartment buildings multi-storey buildings design and construction of an internal drainage system.

Before repairing the roof of private buildings, it is recommended to perform a preliminary dismantling of storm sewers. After repair, the storm drain is mounted back. If its repair is required, then during installation, damaged funnels, gutters, brackets and other products are replaced with new ones.

The roof funnel is mounted during the installation of the roofing pie

Repair of the internal storm drain is carried out in the following sequence:

The internal channel is cleaned using a flexible cable with a nozzle in the form of a metal brush.
At the stage of installation of linear guides for the screed, a slope is formed towards the technological hole in the roof structure.
After the concrete screed has dried, installation is carried out roof funnel into the technological hole on the cement mortar.
After the mounting solution has dried, the surface near the funnel is treated with a bituminous primer.
Next, the laying of rolled waterproofing in 2 layers is carried out. After that, a compression ring is mounted and a hole is cut in the funnel.

Features of repairing a flat roof in winter

Maintenance and overhaul of flat roofs in winter is carried out only in exceptional cases, when repair work is necessary to maintain the integrity of the ceiling.

Laying the roll coating in winter should be carried out with extreme caution.

When working in the winter period, the following rules must be observed:

it is advisable to carry out repair work on a clear day - this will avoid problems when laying roofing material;
when laying materials, moisture should not be allowed to enter between the various layers of the roofing cake;
if the winter is snowy, then frame-tent shelters are used for repairs, which make it possible to avoid rainfall on the roof surface.

To provide thermal regime gasoline or gas heat guns are used. Roofing material must be kept at room temperature for 24-36 hours.

How much does a flat roof repair cost?

Flat roof repairs are complex works, so their final cost consists of the cost of the material, the cost of its delivery, labor costs, etc. At the same time, the cost of a major overhaul is difficult to estimate without a preliminary inspection of a flat roof.

On average, the cost of current repairs, which you can do yourself, will cost no more than 200 rubles / m 2. The total costs mainly consist of the cost of the material and the rental of the tool, if one is not available. Capital works cost about 2–2.5 times more than local repairs of minor damage. If the repair is carried out with the involvement of specialists, then the final cost increases by about 2 times.

To estimate the cost of repairing a flat roof, you can use the table below. The data in the table is based on price lists from three specialized repair companies in the central region of Russia.

Table: Cost of Repairing an Existing Flat Roof

Name of works	Unit rev.	Price (work + materials), rub./m 2	Price (only works), rub./m 2
Repair of an existing flat roof with welded-on materials
Roof repair in 1 layer, including repair of the old roofing carpet (opening and gluing swellings and other defective places)	m 2	500	350
Repair of the roof in 2 layers, including the repair of the old roofing carpet (opening and gluing swellings and other defective places)	m 2	800	530
Roof repair in 2 layers, including the complete removal of the old roofing carpet and repair of the screed	m 2	900	560
The device of a flat roof during capital construction and repair
Roofing device in 2 layers on the finished base	m 2	750	430
Installation of a new lightweight roof (vapor barrier, mineral wool insulation 150 mm, 2 layers of built-up material)	m 2	1700	570
Installation of a new roof (vapor barrier, mineral wool insulation 150 mm, reinforced cement-sand screed, 2 layers of built-up material)	m 2	2400	800
Installation of a new roof with screed and rake (vapor barrier, mineral wool insulation 150 mm, keramzit rake with an average thickness of 100 mm, reinforced cement-sand screed, 2 layers of deposited material)	m 2	2700	910
Repair of an existing flat roof made of polymer membranes
Repair old roof using a PVC membrane coating (eliminating bubbles on an old carpet, laying geotextiles, installing a 1.2 mm membrane coating)	m 2	850	350
The installation of a roofing carpet made of PVC membrane on a finished base with mechanical fastening	m 2	750	250
Installation of a new lightweight roof (vapor barrier, insulation with mineral wool boards 150 mm thick, installation of a roofing carpet made of 1.2 mm PVC membrane)	m 2	1750	420
Installation of a new roof with a screed and rake (vapor barrier, insulation with mineral wool boards 150 mm thick, expanded clay rake, cement-sand screed up to 50 mm thick, installation of a roofing carpet made of PVC membrane 1.2 mm)	m 2	3000	1000

Overhaul of the roof is an expensive work on the quality of which depends on the comfort and coziness inside the living quarters of the house. Therefore, when building a house, you should do all the work with high quality and not save on materials. In order not to bring the roof to a critical condition, it is recommended to perform a scheduled inspection and local repairs, if necessary.

That's why she's so popular.

Its ease of use lies in appearance additional meters floor space.

As well as reducing the amount of material for coating, ease of installation, ability to retain more heat and much more.

Repair of a flat roof, if necessary, it is possible to carry out without the help of a special team, but you should know all the nuances of the process.

When covering the roof with bituminous materials, you should be aware that it requires regular check-ups. In addition, minor damage to the coating is much easier to fix and repair than more serious repairs.

In the case of rotting of the base of the material, water begins to leak inside the roof, which is very unpleasant for living in such a house. It is important to detect a leak in time.

To determine the need for repair, surface should be examined. If the roof is pitched, then in addition to the material itself, it is better to check from the side of the attic and the truss system.

Basically, flat roof coatings are vulnerable to long-term exposure to ultraviolet radiation, can begin to rot and are damaged when exposed to high temperatures, therefore during the inspection, attention should be paid to:

The presence of delaminations or blisters on the surface;
The presence of cracks, scuffs, cracks, in general, any violations of the integrity of the material;
Violation of the tightness of joints and seams;
Existing recesses in the plane, which serve as a source of moisture accumulation.

There are two repair options that may be required for soft roofing:

Minor repairs;
Capital.

The need for major repairs arises if:

Parapet minimum height violated. This becomes an obstacle to providing the necessary overlap on the layer of waterproofing materials. As a result, the tightness of the roofing is broken;
Ventilation device broken, which leads to the accumulation of vapors under the surface of the coating and the accumulation of moisture in the layer;
Roof material displacement. Such a problem must be eliminated as soon as possible, the roofing layers, moving, lose their functions.

ATTENTION!

If there is a few visible damage on the roof surface, in most cases the problem is solved by minor repairs.

Common defects

Material selection

After the roof area has been inspected and the scope of future repairs has been determined, it is worth compiling a list of materials that will be required for the work.

How good will the restoration of the coating be, largely depends on right choice material for this.

You should choose it, guided by the following points:

Choose brands of manufacturers that are already have proven themselves;
The materials have positive feedback from consumers;
Price range should be available all segments of the population;
The material is easy to use;
Characteristics of strength and reliability at a high level;
They have a long period of use.

Of more popular materials, which are used in the repair process, we can distinguish:

Bitumen-polymer material;
Flat type of membrane tiles;
Roll material;
Flexible tiles.

In addition to the main variety of materials, you will need additional, they include:

Soft rubber;
Nails;
crate;
plywood;
Cement for screed;
Bitumen;
Thermal insulation and;
Reiki;
Rubber seals;

Bitumen-polymer material

Flat type of membrane tiles

Flexible roof tiles

Minor repair process

The process of minor repairs also has its own installation features, depending on the size of the damage areas. When installing a flat roof, the material is laid in layers, fastening them together with a bituminous mixture or mastic.

When bubbles form on the coating, this indicates that the middle of the coating began to delaminate and this problem needs to be fixed urgently.

Pre very importantthoroughlyexamine the area for moisture. If moisture is present in it, then it is very important to find the area through which moisture seeps and replace it with a new one.

If there is no water on the site, then it is enough to attach a patch. According to this principle, the nature and method of minor repairs in the case of any damage are determined.

Damage in a small area is eliminated as follows:

Calculate the distance first from the material that protects the roofing material from sunlight.
Thereafter the swollen surface is cut crosswise with a knife so that it is in the center of the problem area.
Thereafter inspect the surface covered for moisture.
If the surface is dry, then carry out the procedure for attaching a patch, if not, then leave to dry or use a building hair dryer for such purposes.
After the surface has dried, use a spatula mastic is applied under the edges of the material. A ruberoid is attached from above with pressure movements, after which a similar manipulation is repeated with the second layer and the material is fixed with nails.
Further cut out patch to the right size, on the outer side of which mastic is applied and applied to the problem area.
For reliability, the patch is nailed with plaster nails and apply mastic on top.

Mastic in the last stage of the process should be applied to the nail heads.

If the surface of the leaky roof is large enough, then the repair of an apartment building is carried out as follows:

The surface area is completely cut out, capturing all problem areas along the perimeter, while counting the number of layers that need to be laid.
Thereafter cut out a few patches(depending on the counted layers), equal in size to the cut out area.
Further carry out the laying of the material in layers, applying mastic along the contour of each of them. Laying is carried out end-to-end, pressing on the roofing material with the maximum possible force.
It is necessary to lay layers until they are equal in height with the rest of the coating, after which another patch is cut out, but already exceeding the size of the repaired part of the roof.
On the last patch, mastic is also applied around the perimeter, applied to the roof surface and fixed with slate nails.

Minor repairs

Overhaul process

Overhaul also has its own differences depending on the type of repair.

Repair could be next:

Replacing the roof covering completely;
Renovation of roofing material and equipment of the roof with additional insulation materials;
Re-equipment of the roof structure and the creation of a different angle of inclination of the slope.

The option for a major overhaul depends on the problem encountered and the type of construction of the entire roof. The overhaul process is as follows, taking into account the need for a complete replacement of the material and supplementing it with a heater:

Dismantling of a flat roof. Dismantling the roof begins with all its constituent elements and layers. To make it easier to navigate the process, it is worth imagining the reverse sequence of mounting the structure. Initially, ebbs, aerators, aprons, etc. are removed. After that, they begin to clean all layers of the roof covering. Remove concrete screed and insulation.
Installing a new roof.

The process of installing a new roof is carried out in the following sequence:

First installing beacons to be able to lay the concrete mixture;
Thereafter line the insulation;
For insulation material lay out reinforced mesh, after which the screed is poured, the thickness of which should be approximately 4 cm;
carpeted in several layers;
Attach: parapet, belts.

Additional equipment with insulating materials is necessary in case of unsatisfactory heat saving, low level of insulation.

ATTENTION!

If it becomes necessary to add insulation material, then after dismantling the coating, the insulation material is removed and panels with a wedge-shaped profile are attached. On top of the insulation, a flooring of a waterproofing film is carried out.

If it is decided to provide the roof with additional insulation, laying it on top of the surface, then the process is as follows:

Initially put a waterproofing film on top of which polyurethane foam is laid;
To ensure secure attachment to the roof, equip a pillow of gravel on top, which is not only a load, but will also provide protective properties to the coating from exposure to ultraviolet rays.

Roof dismantling

Repair of a flat roof in winter

In some cases, it may happen that repairs need to be done in the winter.

Of course, if the situation is such that you cannot do without urgent repairs, then you need to do it.

But if the reconstruction of the coverage can wait, then it is better to abstain until more favorable conditions. In winter, deciding to make repairs, Keep in mind the following features of the process:

The biggest challenge is the weather. It is necessary to carefully and competently approach the implementation of each stage. so as not to end up with a poor-quality repair.
Starting the reconstruction of coverage areas, it is necessary to keep them dry and prevent moisture from getting between the layers of roofing material.
In light of the above, better to have on hand heat gun . It will make it easier to maintain the desired level. temperature regime and install the roofing correctly.

Roof repair in winter

Conclusion

The process of repairing a soft roof, if necessary, is easy to carry out on your own. It is worth carefully approaching this issue from the first stage, choosing the right material and a quality result is guaranteed.

Useful video

In this video you will learn how to repair with mastic:

In contact with

Flat roofing is the most common type of roof construction. However, it also has a limited lifespan. Atelier Krovli provides a wide range of services for the maintenance of the roof carpet, including maintenance and overhaul of a flat roof in Moscow and Moscow Region at a bargain price.

Repair types

In the case of a local nature of the work, a partial replacement of the defective coating is carried out, as well as the elimination of delaminations and blisters.
During the overhaul of a flat roof, a complete replacement of the insulating layer and carpet material is assumed, including surface preparation for the subsequent installation of a new coating. The reason for the overhaul may be damage to more than 40% of the total roofing area. Due to high labor and material costs this species work is much more expensive than the current one.

What does the cost depend on?

The repair begins with the visit of a specialist to inspect the current state of the flat roof and assess the necessary labor and material costs. After that, the terms and the estimated cost of materials and other consumables are agreed with the customer.

The final price for the repair of a flat roof is formed from the following items of expenditure:

costs for the purchase of basic and draft materials;
fare;
masters' time.

The final estimate is drawn up only after a thorough inspection of the flat roof, the choice of an effective technical solution to the customer's problem and taking into account all third-party factors.

How we are working

Leave a request on the website or by phone

At a certain time, meet our specialist

Coordinating technical details

We conclude a contract with a guarantee

We carry out installation work within the stipulated time!

Ready! You accept and pay for work

When is a repair needed?

Roof covering problems flat type, as a rule, arise due to water stagnation on the surface, wetting of the heat-insulating layer or evaporation of moisture from the roofing carpet. For the reasons described, the following coating damage may occur:

swelling of the surface;
layering of the roofing cake;
formation of depressions and funnels with rainwater;
formation of bubbles or cracks;
germination of various vegetation through the inner layers;
destruction of the coating around the chimneys.

Periodic preventive inspection will help you limit yourself to current local repairs only. Otherwise, after a while, you will not only have to completely replace the coating, but also spend money on restoring the premises. It is recommended to carry out work only on warm days and in dry weather.

Our services

To repair a flat roof was of proper quality, our specialists perform all work according to a specific plan:

the specialist goes to the site;
the coating is inspected, all the necessary measurements are taken and the required calculations are performed;
if necessary, the old coating is dismantled;
a project for the future roof is being prepared;
installation of the base and roofing material;
final work on the installation of the drainage system is being carried out.

The main function of a flat roof, like any other, is to provide reliable protection for the house, and therefore everything that is in it, from atmospheric influences. Of course, over time or due to defects that may have been made during its construction, leaks may form in the roof. In such cases, it is required flat roof repair.

When pronounced wet spots are found on the ceiling and walls, this means that the roof is leaking somewhere. It is clear that in similar situation it is necessary to urgently identify the cause of the leak in the roof structure and immediately eliminate it.

It is quite possible to find trouble spot it will not succeed immediately, since it may be away from the place of leakage. Therefore, to find "weak spots" it is necessary to carefully examine the surface of the roof. It must be admitted that it is not so difficult to find minor defects in a soft roof on bituminous material, for example, bursting bubbles or cracks. It is much more difficult to find the source of a leak on a roof covered with a layer of gravel.

According to the nature of the damage to the roof, there are current repairs (up to 40% of damage) and capital repairs. In the first case, a “patching” local repair of simple damage is assumed, while in the case of a major one, a thorough repair of damaged structures is carried out.

How to repair a flat roof on your own

Such simple defects as, for example, cracks, swellings, parted seams of roofing laid in strips, can be quite simply eliminated by yourself. For this, cold-curing bituminous mastic is most often used, that is, during repairs, you can do without the use of a special boiler in which bitumen is heated.

Flat roll roof bulge repair

This defect, as a rule, is a consequence of the delamination of the roofing. If the place of swelling is dry, a patch is applied to it. If moisture is found, first find the leak and completely replace the area affected by dampness. The need for special equipment to perform the current flat roof repair, No.

The elimination of swelling is schematically as follows.

If the roof is covered with a layer of fill (gravel, marble chips or pebbles), then it is removed from the swollen part.
The bituminous coating at the site of swelling is well heated with a blowtorch or a building hair dryer. When the material has already softened sufficiently, the swollen area should be pressed, for example, with a suitable wooden block.

If there is water in the swelling, it is opened with a knife with a cross-shaped movement and the edges are turned away. The incision is deepened until the base is reached and the coating is dried. To speed up the drying process, use a building hair dryer.

The repair is carried out with the help of cold mastic. Using a spatula, it is applied to the sides of the incision, the edges are again folded, pressed down to the base and nailed with 20 mm roofing nails at a distance of 15 mm from each other.
To cover the damaged area, a patch of roofing material is used. It should protrude beyond its borders by 50 mm in any direction. Cold mastic is laid on the damaged area, a patch is applied and pressed down to the roof surface. The patch is fixed with nails, its edges and nail heads are treated with mastic.

Repair of cracks on the roof surface

Any self-adhesive repair material can be used to cover cracks in the soft floor.

The surface of the crack is thoroughly cleaned of dirt and a special primer is applied to the surface.

After waiting about an hour, the protective layer is carefully separated and adhesive material is applied to the surface of the defect. If the size of the crack is small, the required length can be cut off immediately. If the damage is long enough, the adhesive tape must be unwound gradually. Then the tape should be pressed well so that the edges lie firmly on the base.

Patches on the roof, of course, do not give it aesthetics, so it is advisable to decorate them by applying paint or bitumen to the entire surface.

Flat roof overhaul

The need for major repairs arises when flat roof structures are damaged. They can be caused by its incorrect device. Let's look at a few examples.

If the minimum parapet height on a flat roof is violated , it is not always possible to provide the necessary overlap on the surface of the parapet layer of waterproofing. This, as a rule, leads to a violation of the tightness of the roof.

The insulation layer must have a vertical overlap of at least 25 cm.

If the ventilation of a flat roof is disturbed , this is a direct road to the accumulation of moisture vapor from below, which will lead to moisture condensation in the insulation.
If there are no compensating layers , structural elements can shift, which will lead to their uneven "work". Of course, in this case, an additional sealing layer can be applied to the damaged areas, but this will only solve the problem for a short time. At any time, damage can occur in a new location.

The list of cases where a major repair may be needed could be continued, but for all of them one thing is common - the need for certain costs, which depend on the method of solving a particular problem. Among them are the following:

renovation of the entire roof;
simultaneous renovation of the roof and additional insulation;
installation of a new metal roof with a small slope.

The choice of a flat roof repair option depends on the specific conditions and family budget.

The arrangement and repair of a flat roof is done by two types of materials: soft or self-leveling. They provide excellent sealing of roofing layers, protecting the house from damaging effects. environment and long service life. There are typical soft roof damages that occur periodically regardless of the quality of the materials used.

Types of damage

You can find out if there is a need for reconstruction of the roof by carefully examining its surface. You can detect defects in the roof of a house if you just walk along it. Damaged areas can make a crunch, bulge and swell.

Roof Condition Assessment

Types of Flat Roof Damage:

stratification of the "pie": full or partial;
swelling of the coating;
the occurrence of bubbles;
the appearance of cracks;
the formation of depressions and funnels filled with rainwater;
peeling of the coating around the chimney pipes;
germination within the layers of cover of all kinds of vegetation.

If you periodically conduct a preventive inspection of the roof of the house for defects, then a small current repair of the surface can be done by hand. But if this is not done on time, the defects will gradually progress, and the roof may begin to leak. In this case, it may be necessary not only to overhaul the roof of the house, but also to restore interior decoration premises.

Roofing defect

The consequences of untimely roof repairs:

growth of moss and other vegetation;
the appearance of mold;
deformation wooden walls and floors of the house;
violation of interior decoration;
the occurrence of leaks;
icing of the walls of the house and ceilings in the winter;
the appearance of multiple cracks,
detachment finishing materials, their accelerated destruction due to decay.

Deformed coverage area

in early autumn, so that there are no problems with a leaking roof;
in the spring, after the snow melts - to eliminate damage after the winter;
in summer it is necessary to remove leaves and clean the roof of moss;
In winter, you need to clean off the snow in time.

This will help reduce the cost of ongoing home repairs.

How to repair a flat roof

Depending on the size and nature of surface defects, two types of repair can be noted.:

small current;
capital.

Partial roof replacement

There are two effective methods repair flat roof:

sticking on mastic;
fusing with high temperature exposure.

Membrane roof device

PVC membranes are soft material for roof repair, with which you can carry out repairs quickly and easily. A big plus of such coatings is that laying is possible in one layer directly on the previous coating of roofing material. The only requirement is that the surface must be clean (no stones, debris, old grease stains, puddles of water).

Membrane roof structure

To carry out the work you will need:

Work technology

The rolls are rolled out on the surface of the roof and the necessary pieces of canvas are cut off. The canvases are overlapped by 12 cm. The edges of the canvases are fixed with dowel-nails every 40 cm. The edges are connected with heated air from a welding machine. At the same time, a stream of hot air is directed under the canvas and immediately rolled with a roller. This method is justified when repairing large areas..

The use of euroroofing material

This repair technology is much more economical, but the surface must be perfectly cleaned.. The flooring of the material is made in two layers. The first is the main, and the second is decorating. Thanks to a special powder, decorative roofing material is not afraid of the sun, frost, does not crack or dry out, is chemically resistant and has a long service life (about 30 years). The material is produced in rolls.

Welding material

Materials and tools for work:

Two types of euroruberoid;
Gas-burner;
Special scissors;
Hook.

Fusion technology

Strips of the desired length are measured and again twisted into rolls for convenience. Each canvas is heated with a gas burner and rolled out, holding it so as not to get burned, with an iron hook.. In this case, the material is firmly attached to the surface. A decorative one is placed on top of the bottom layer according to the same algorithm. The two layers are then melted at the same time, providing reliable adhesion and durability of the coating.

other methods

A small repair of the soft roof of the house can be done using an ordinary roofing material. It certainly doesn't have all the virtues. modern analogues, but with small defects in the roof, you can use pieces of roofing material, laying them on molten bitumen. The material can even be laid on top of iron or slate surfaces.

Elimination of small defects

With small cracks in the slate plane, fabric flaps will help in oil paint- they can repair minor damage.

Large fragments of damage are subject to replacement or complete overlapping of the roof with new material.

How to correctly calculate the cost of reconstruction

The technology for carrying out minor current repairs does not require such preparations; it can be carried out spontaneously without any preliminary preparation.

When planning a major overhaul of the roof, it would be quite reasonable to make a preliminary calculation of the cost of repairing the roof from roll materials.

First you need to calculate the consumption of material

Procedure for planning repairs:

1. Measurement of the territory within which it is planned to replace the coating.

2. Compilation of a list of all required materials, taking into account the nature of the defects.

3. Adding to the list of materials for the manufacture of cement-sand mortars, if it is planned to update such sections of the roof.

4. To the result obtained, add 10-20% overrun of materials.

5. Consider the offers of various building materials stores, take into account promotions and conditions for the delivery of materials.

Overhaul

The overhaul of the roof requires large expenses and a lot of time, but the procedure itself can be done by hand, provided that you have some skills.

Complete replacement of the old coating

Event technology:

Disassemble the roofing cake and check the condition of all insulating layers.
If damaged coatings are found, they should be replaced over the entire area.
Make a cement-sand screed, guided by the instructions on the packaging of the mixture.
Pour the solution with a layer of 2-4 cm and wait for the surface to dry.
Make a primer with a bituminous emulsion.
Treat the entire section of the roof with mastic.
Lay the pre-heated parts of the solid sheet on the roof surface, pressing with a stick. The procedure is easier to do with two people.
Lay all strips with an overlap, maintaining 15-20 cm of the lining.
Seal seams, joints and hard-to-reach places.
If desired, you can make an additional layer of soft roofing by rolling the roll in a perpendicular direction.

In order for the overhaul of the roof to give a result and for the next ten years to save from such events, all the rules should be followed when laying the coating. It should also be taken into account that the condition of the coating will depend on the quality of the selected material. It is better to choose products from reputable manufacturers.