How to make a quality repair of a roof made of soft materials. How to properly repair a soft roof Repair of a soft roof with modern methods

We are glad to welcome you on the site of the roofing company "Stroy-Alliance"
The main and priority activity of our organization is the high-quality performance of work on the installation and repair of flat roofs. We will reliably carry out the following works:

Laying gasket and built-up vapor barrier.


Each type of these plates has its own advantages and disadvantages. Call us and we will offer you the brand of insulation that is right for you.


We will perform work on creating slopes from expanded clay or using wedge-shaped thermal insulation.


Installation of cement-sand and prefabricated screeds.


Reliable brands of roofing waterproofing. No fiberglass as the basis of the rolls. Only fiberglass and polyester. The traditional technology for the repair of soft flat roofs includes the fusing of roofing roll materials using gas burners. This method of installing and repairing flat roofs is intuitive and has been used for over 30 years. The practical experience of performing such work by the specialists of our organization is 17 years. As a roofing we use high-quality materials of the TechnoNikol company.


Polymer-bitumen grades with a thickness of more than 6 mm (with two-layer laying) The service life of the roll coating is from 15 years. Strict adherence to the technology of work.


Domestic and imported polymeric membranes. All accessories for installation are available. Three automatic welding machines. Crews with 10 years of experience in PVC membrane roofing.


Operational visit to the object. Reliable troubleshooting. The roofers of Stroy-Alliance are certified by TechnoNikol.


We will draw up a commercial offer according to the technical task or defective statement within 1 working day. If necessary, we will calculate the cost at state rates.



In our activities we use only proven technologies and use materials that have passed many years of testing in real operating conditions. In principle, we do not work with materials that have low technical performance and a short service life. We supply the main materials to the object, directly from the manufacturing plants, bypassing intermediaries.
We offer potential Customers various methods of work performance. This also applies to the optimization of grades of materials, and technologies used in the installation of roof structures. We know how to save money without losing quality!

Do you want the repair or installation of a flat roll roof to be carried out with high quality, without violations of technology and in a short time?
Call now or leave a request and our roofers will get down to business!

Benefits of cooperation with Stroy-Alliance

Stroy-Alliance is proud of its team. Due to the fact that we do not have a "staff turnover", over the years of our existence, the company's employees have gained invaluable experience, trained in Russian and foreign companies. All this guarantees that our specialists will prevent errors, take into account every nuance in the work and provide a high-quality product as a result. Stroy-Alliance specialists clearly fulfill their obligations under the contract, so our company is considered a reliable partner. Expensive modern equipment that we use for installation, repair of flat, soft, built-up, bituminous roofing, laying of rolled roofing, roof waterproofing is the advantage of Stroy-Alliance, as this allows us to minimize the time of work without loss of quality.

  • More than ten years is our experience with PVC membranes. We provide our services at a wide variety of facilities: shopping malls, warehouse terminals, private homes;
  • Installation of membrane roofing is carried out in the shortest possible time (from 500 square meters per day);
  • Quick budgeting, preparation of a full package of documents when putting the object into use (acts of acceptance of work performed, acts of hidden work, etc.);
  • Installation of a rolled roof made of PVC membranes, repairs, installation of a built-up flat roof are carried out by us throughout the Central Federal District of Russia;
  • The work of Stroy-Alliance fully complies with tax legislation (when concluding a work contract, VAT is deducted);
  • Installation, repair of a flat roof is carried out using a variety of methods (modern and traditional);
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  • Brands of materials used are agreed with the Customer;
  • When providing services, we use the latest foreign equipment;
  • Citizens of the Russian Federation work in the brigade.

Leave your roof repair worries on the shoulders of our specialists!

Our article is devoted to the description of such an issue as the overhaul of a soft roof and its technology. This topic is of great interest among people seeking to repair the roof on their own, therefore here we will touch on the topic of types of repairs and the features of its implementation.

There are several ways to repair a soft roof, and they all depend on the amount of damage to the roof and the level of their complexity.

There are two types of repairs:

  1. Current. This is when roofing failures are less than 40% of the total roof size.
  2. Capital. When the total component percentage of errors from the roof area is more than 40%.

It may seem strange, but the main reason for the leakage of a roof consisting of soft roll material is the destruction of the bituminous layer. It is he who provides protection for this material with the help of its waterproofing properties.

Experienced experts advise every two or three years to check the roof for various cracks and blisters, and not at all (as many do!) Moisture seeps into the room. If you adhere to this rule, then you will not have to make major repairs to the soft roof for a long time. By checking and detecting problems in time, you can limit yourself to the usual “micro-repairs” and in this way save both time and waste.


As for the process of repairing soft roofs, it is not so complicated in its implementation. Of course, if there is a need to repair the roof of the house on your own, then the technology for repairing a soft roof will be somewhat more complicated and will require more of your time and effort than repairing a roof, for example, a garage.

And a few words about the material: the most simple in terms of installation (especially with your own hands) are considered to be rolled roofing, since they just do not require special skills and installation equipment.

Roofing materials and their device

We found out that the repair of a soft roof begins with determining the amount of damage to the roof. To do this, you need to do a simple thing - go up to the roof and carefully inspect the entire coating.

By doing this, you can find the following problems:

  1. Delaminations located at the junctions of the material webs, as well as in overlaps.
  2. Various pits and depressions in which water is retained.
  3. Rotting of material in places of water accumulations.
  4. Moss and fungus (in the same water places).
  5. Penetration of moisture. You will find out about this if you find swellings on the surface of the roof cover.
  6. Visible mechanical problems: tears, cracks, abrasions.

So the inspection was done. Now we draw conclusions and determine what type of repair the roof of the house needs.

Then we move on to the next stage - budgeting. An estimate for the repair of a soft roof does not have to be drawn up by specialists. This can be done on your own, but only if you are completely confident in the correctness of your roof repair decisions.

What does the estimate include

We will provide a list of works that are compiled by specialists in the repair of soft roofs and which must be completed first:

  1. Completely or partially remove the old roof.
  2. Prepare the surface for the installation of the roof covering.
  3. Carry out work on the installation of the top layer and coat the seams of the roof.
  4. Consider the cost of the top waterproofing layer.
  5. Prepare combustible materials for the burner.
  6. Consider consumables for repairs and their delivery.

If you decide to do the repair yourself, then the estimate for the repair of a soft roof may include only the price and delivery of the material that you plan to use.

If you are in doubt whether to do the repair yourself or hire workers, there is a third option - contact a roof repair company.

How much will the repair cost?


This question occupies those who wish to repair a soft roof with their own hands no less than the correct way to repair the roof itself. The information provided will help you find out approximately how much you will need to spend on repairing a soft roof.

The first is drawing up a roof plan with its exact dimensions. This is necessary in order to calculate the amount of material required.

The second is to find out the parameters (length, thickness, height) of the parapets and adjoining walls, as well as the length of the cornice overhangs.

If there are shafts on the roof, then you need to find out their number and their size. The same actions apply to pipes and other various elements, if they are present on the roof.

Another point is to find out the condition of the roof and it is desirable to take photographs at the same time.

To calculate the funds spent on repairs, you also need to draw up an approximate list of work required for repairs.

And the last - part of the costs depends on what kind of material you will use for repairs.

Overhaul stages

In order to repair a soft roof with their own hands, masters with experience advise you to learn a few immutable rules that many self-taught masters do not follow and, as a result, regret about it. But it's not always their fault. The fact is that most of the rules for SNiP, which are observed during the repair of roofs, were developed in Soviet times. But, as you may have guessed, a lot has changed since that time - new materials have appeared, modern technologies have been developed.

And therefore, we hasten to assure you that if you have knowledge and confidence in what you are doing, these rules will not be useful to you at all. And if the repair is carried out by specialists, then it will be completed efficiently and quickly without peeping into the “cheat sheet” of SNiP.

So, repair, as well as the installation of a soft roof from scratch, must begin with the preparation of the base, since the material will be laid on it.

The current repair has several options. It is possible to perform partial replacement (patches) and repairs "in the old way", when one or a couple of layers of new material are laid on the old cover.

In the case of using patches, it is necessary to remove all defects in the places where they fit. After the surface is cleaned of dust, debris and filled with sealant or bituminous mastic.


Remember: the dimensions of the material must be larger than the dimensions of the surface to be repaired.

The edges must be well smeared with bituminous mastic.

It is worth saying that this method does not give a very high-quality result. But the repair "in the old way" is much more in demand among developers.

Repair of a soft roof, the technology of which consists in laying the material according to the old method, is easier - without removing the old cover.

Here you need to remember that the presence of two more layers will increase the load on the roof, so first you need to find out if the floor and wall supports are able to bear such a weight!

Example: the average mass of modern materials is 4-5 kg ​​/ m2, with a roof area of ​​​​1000 m2, the load on it will increase by 5 tons.

Soft roof: repair

First, the roof is cleaned of debris, dirt, etc. The new layer is covered in the usual way. But remember that it is better not to use this method in case of severe damage to the old cover or if there are already more than eight layers of material on the roof.

Capital repairs of a soft roof include the following processes:

  1. Replacement of roofing material.
  2. Repair of parapets, foundations (screeds).
  3. Replacement of cornice overhangs.
  4. Replacement of aprons adjoining and fencing.
  5. Repair and revision of drains and water intakes.

And if the roof of the house is too neglected, then you will not be limited only to repairs. It will have to be built practically from scratch, which in one way or another will affect the cost of the work.

Here's what the overhaul looks like:

  1. Removal (removal) of the old coating.
  2. Foundation repair.
  3. Waterproofing installation.
  4. Execution of a screed.
  5. Laying material intended for roofing.
  6. Laying a protective layer.

And here is a list of things that will be needed to complete these works:

  1. Gas-burner.
  2. Roofing material.
  3. Mastic bituminous or sealant.
  4. Knife (to cut roofing material).
  5. Broom (to clean the surface).
  6. Cement (for screed).
  7. Insulation.
  8. Overalls.

Do not confuse a gas burner with a blowtorch! According to professionals, using a blowtorch to heat the material, you will spend significantly more time than using a burner.

Now consider the overhaul of a soft roof in more detail.


To perform the first stage - the removal of the old coating - you can use special equipment that removes and immediately rolls the coating into a roll.

Another option is an ax, where the wooden handle is replaced with a metal one. At the same time, its length determines the growth of a particular person.

After cleaning the surface, you need to check the base for dents, cracks, etc. If they are absent, the screed does not need to be poured.

In some cases, the screed is preceded by a heat-insulating layer, such as foam or gravel.

When the cement has hardened, we proceed to laying the material for the roof. Despite the differences in the composition of the soft roof, it is better to use fiberglass materials. Unlike cardboard coverings, materials based on fiberglass are more durable and have high technical qualities.

Start laying from the bottom edge of the roof. Each next row is overlapped - from 10 cm. The amount of overlap will depend on the angle of the roof slope.

Then the seams must be treated with bituminous mastic. After waiting a while, you can proceed to the next layer. It is laid in such a way that the seam of the previous coating layer does not coincide with the seam of the next one.

Ruberoid, glassine and roofing paper also require the installation of a protective cover, which is made from bituminous mastic. After it is sprinkled with crumbs of stone and rolled with a skating rink.

It is better, of course, to resort to materials of a new generation, which are already covered with protective dressing and allow you to refuse to coat the seams between the rows. Thus, less material is wasted.

Here, in principle, is the whole technology of repairing a soft roof - as you can see, it is not difficult. Two people can easily perform this work, and the choice of material for coating is completely up to you.

And one more thing - remember that the revision of the roof cover (at least once every three years) and the removal of minor errors will save you from problems such as complete overlapping of the roof, roof leakage during the rainy season, as well as from such an undesirable circumstance as urgent repairs soft roof in winter. Good luck to you!

Repair of a soft roof is necessary when the first defects are detected. Otherwise, leaking water will destroy the insulation, render the hydro and vapor barrier unusable, and you will have to spend more effort and money on restoration.

The final cost of restoration work depends on the type of soft roof. It is known that it is much cheaper to put in order a roll coating than to restore bituminous tiles.



The price of all events depends on the chosen repair option:

  1. Cosmetic restoration includes the elimination of minor defects - divergence of seams, holes, dents and swelling.
  2. Capital works consist in the complete replacement of existing material with qualitatively new components.
  3. Emergency repair is carried out when it is impossible to qualitatively eliminate the damage due to weather or other conditions. The main thing here is to fix the problem, and not to preserve the appearance.

The appropriate type of measures to be taken is determined on the basis of an internal and external inspection of the structure. This will allow you to identify the most problematic areas and focus on them.

cosmetic work

Cosmetic repair allows you to restore the beautiful appearance of the roof and at the same time eliminate the leak. They resort to it in cases where the water has not spoiled the "roofing cake".


Defects are usually eliminated in two ways, depending on their type:

  • cracks and holes are eliminated by applying patches and subsequent application of mastic or bitumen;
  • the separated joints are again glued with roofing glue on both sides - top and bottom.

It is more difficult to repair a soft roof with swelling. The reason for this phenomenon is the penetration of moisture into the insulation. To eliminate the defect, the heat is replaced and a new layer of waterproofing is laid. Air ducts are also constructed to circulate air and remove moisture.

Capital recovery

Major repairs are required in case of extensive damage to the roofing, when it makes no sense to partially close up the holes. Measures are also taken due to the aging of the material.



In this case, the work consists of several stages:

  1. Dismantling the old system - removing not only the roof, but also the "pie".
  2. Drying of all structural elements, processing of wooden elements with antiseptics.
  3. Laying a vapor-permeable membrane, insulation and waterproofing.
  4. Roofing installation.

Major repairs may be needed for extensive swelling. In this case, the work on laying ventilation ducts with the installation of aerators is included in the technological process, gaps are left for air circulation.


Here are the main aspects of repairing a roof from a soft roof. The number of activities and the complexity of the work depends on the type of roof truss, surface area. And if you want to save money and carry out a quality restoration, then contact a professional company.

The price of repairing a soft roof

Types of jobsUnitsPrices:
Complete dismantling of the existing roof (waterproofing coating, screed, insulation) with garbage disposalm2250 rub.
The device of a two-layer roofing carpet with welded roll material on a vertical surfacem2350 rub.
Thermal insulation device from slabs 150 mm thickm2200 rub.
Installation of a cement-sand screed up to 50 mm thickm2300 rub.
Reinforced cement-sand screed up to 50 mm thickm2350 rub.
Priming the base with a primerm2100 rub.
Deceleration device made of expanded clay with an average thickness of 100 mmm2200 rub.
Vapor barrier device built-up single-layerm2150 rub.
Dry vapor barrier devicem280 rub.
Installation of drain funnelsm22000 rub.
Installation of roof aerators, deflectorsm22500 rub.
Device for covering a parapet up to 500 mm wide with dry galvanized steelm2300 rub.
The device of an apron made of galvanized steel at the junction of the roofing carpet to vertical surfacesm30 rub.

The average service life of a soft roof reaches 10-15 years, but this is the case if all the features of the technological process have been observed. The “life” of a roof covering is the longer, the more carefully and regularly the maintenance of its surface is carried out. But it is worth noting that even with systematic care, from time to time there is a need to repair a soft roof, and there may be several reasons for this.

  1. Emergency.
  2. Current.
  3. Capital.

emergency repair necessary for the emergency restoration of a soft roof to its normal operating characteristics. Most often, at this time, the coating is replaced in places of actual and alleged leaks. Reconstruction is subjected to from 5% to 20% of the roof area. Repair is the installation of patches in critical areas, less often a part of the roofing material is replaced.

Current repairs cover from 10% to 40% of the entire roofing area. It is recommended to be carried out annually after a scheduled inspection of the surface of the roof of the house. The following activities can be carried out as works: replacement of part of the roofing or patching.

This roof is in urgent need of professional repair.

Overhaul necessary when more than 40% of the roof area needs to be restored. In order to fully normalize performance, the entire roofing or most of it is replaced.

The need for repair work is usually due to the destruction of the bitumen layer, which leads to a decrease in hydro and vapor barrier characteristics, which means that water from the outside begins to flow into the interior of the house. If you plan to repair a soft roof with your own hands, then it is worth studying the entire sequence of work, from assessing the condition of the coating to the final stages of restoration measures.

When repairs are needed

To understand how much work awaits the master, you need to climb the roof and assess the damage. During the inspection, you should pay attention to the following points:

  • the presence of delaminations at the junction of panels of soft roofing material;
  • the appearance on the surface of the roof of pits and depressions visible to the naked eye, in which water accumulates;
  • the appearance of blisters and bubbles on the surface of the roof: this is evidence that water has seeped under the layer of material;
  • assess the degree of damage to the roofing from stagnant water - the appearance of rot, mold or fungus;
  • check the roof for mechanical damage - cracks, tears, abrasions, deformations.

Important! Inspection of the roof should be carried out annually, and not once every 2-3 years, as is often the case. Early identification of defective areas will allow you to fix the trouble more quickly and cheaply.

The presence of bubbles on the roof surface indicates that it is time to start repair work.

An objective assessment of the damage will make it possible to draw conclusions - whether a major overhaul of a soft roof is needed or a small restoration can be dispensed with. To determine the sequence of operations, as well as to see the cost and the full scope of work, an estimate will help, the preparation of which should be the next step in repairing a soft roof.

Subtleties of budgeting

Sometimes you may come across information that it is necessary to draw up an estimate only for major repairs of the roof. This approach cannot be considered correct, because the estimate allows you to financially assess the amount of work, as well as systematize the data for the purchase of the necessary materials.

The estimate should take into account a complete list of repair activities, namely:

  • dismantling of the old roofing - completely or only in the volume of the damaged area;
  • preparatory work for laying new roofing material;
  • direct installation of a soft roof and sealing of seams;
  • creation of the upper waterproofing layer.

Also, the estimate should include the cost of purchasing consumables and combustible materials, and take into account the payment for the delivery of purchased products.

Photos of soft roof coating defects with a detailed description will greatly facilitate the calculation of the required amount of materials for repairs

If it is difficult to decide on your own how much the soft roof repair technology will cost, then you can submit an application for the formation of estimates to professional builders. To prepare the document, they will need the following information:

  • a complete roof plan with all measurements;
  • the thickness and height of the parapets, the location and length of the cornice overhangs and their junctions;
  • the location of shafts, pipes and other roof elements, indicating their number and size;
  • description of defects or their photos to assess the condition of the roofing;
  • list of planned works;
  • name of the roofing material selected for repair.

Having received a financial assessment of future repairs, you can start choosing specialists or plan to carry out the work yourself. It should be noted right away that the repair of a soft roof should be carried out taking into account the relevant regulatory documentation, which regulates both the work itself and the materials that must be used.

Important ! Often the experience of a team of craftsmen is adequately replaced by SNiPs, GOSTs and other rules. After all, regulatory documents do not take into account the rapid renewal of the construction market, its development and the emergence of new options for soft roofing with more successful characteristics.

Minor roof repairs

Depending on the type of defect, several options for work are possible:

  1. Creation of "patches" in places of damage to the material.
  2. Connecting broken joints.
  3. Refurbishment the old way.

Important ! If restoration work will be carried out by professional builders, then preference will be given to the latter option, since the first two are considered a temporary and poor-quality measure.

Repairing a soft roof requires professional skills and the ability to handle special tools.

The installation of patches involves local repair of the coating and is performed according to the following scheme:

  1. All visible defects are removed - cut out or pierced.
  2. The surface of the roof is cleaned of dirt, dust and debris.
  3. The damaged area is filled with sealant or bituminous mastic.
  4. A ruberoid is applied to the mastic with a larger area than the repaired area.
  5. Another layer of bitumen is applied on top, which is distributed with a roller over all surfaces with an emphasis on the edges of the patch.

Important! This method has poor efficiency, since soft roofing sometimes has hidden defects, which are very difficult to detect.

If the task of the masters is only to connect the divergent joints, then it is quite enough to perform the following work:

  1. raise and thoroughly dry the space under the roofing material;
  2. coat the damaged area with bitumen;
  3. lay the roof in place;
  4. re-treat the joint with bitumen.

Repair of a fragment of the roof, in which there is no need to dismantle a large section of the roofing

The method, which is called "the old way", is considered the most effective and high-quality for minor roof repairs. Its essence lies in the fact that a new layer of material is laid on the old roof, cleaned of debris and dirt, which is used as a base. It turns out an updated coating with a complete restoration of all operational characteristics of the roof.

However, there are limitations to be aware of when using this method. Repair is not carried out according to this scheme if:

  • the old roof is very badly damaged;
  • this is not the first roof repair and the number of layers of old material has already reached eight.

Important ! The fusing of a new layer significantly increases the load on the floor supports and walls of the house. Before starting work, it is necessary to calculate how much weight can be added without endangering the building structure.

Overhaul stages

In some cases, the roof is already in such a neglected state that local repairs do not help. Then it is worth considering other options, which are based on the removal and replacement of the old roofing carpet. The estimate for the repair of a soft roof in this case increases significantly, and the work itself is called capital. The activities are carried out in a certain order, but it is worth noting that the appropriateness of some stages is assessed by the masters on the spot. In the case of a good condition of any layer of the "roofing cake", some work may be skipped.

The overhaul of a soft roof is a certain sequence of works

The complete list includes:

  1. Dismantling of the old roof;
  2. Dismantling of the cement screed and removal of the heat-insulating layer;
  3. Restoration of the vapor barrier layer;
  4. Putting in order the internal drain;
  5. Installation of thermal insulation;
  6. Carrying out demolition when using sand;
  7. Installation of funnels for internal drainage;
  8. Installation of cement screed;
  9. Primer screed;
  10. Installation of the roof, taking into account all technological features;
  11. Roof coating with fire retardant or reflective composition.

If you have to perform all of the above work, then the cost of repairs may exceed the amount of the cost of a conventional installation. It will not be possible to avoid this, since in any case the work will be associated with dismantling and removal of construction debris.

Important ! The simplest overhaul includes: a complete replacement of a soft roof with a partial repair of the base, as well as revision and partial replacement of some elements of the roof.

Checking the quality of work

The main question that confronts the owner of the house after the repair of the roofing: how to check the quality of work. There is no single line of conduct, but you should pay attention to the following parameters:

  • Visual inspection of the repaired roof. Rolls of material should lie flat, without visible distortions, excessive overlaps and intersections.
  • Assessment of the state of the edges. They must be perfectly melted and fit snugly to the base, otherwise the sheets can be torn off during the first bad weather and strong winds.
  • The behavior of the roof during rain. This is the most important indicator, as it really demonstrates the quality of the work performed.

Important ! Do not forget about the guarantees that any handyman working for hire must provide.

Soft roof after a quality repair

In general, when accepting work, you can focus on the requirements of SNiPs and SPs, since in any case they should serve as a theoretical basis for any serious repair. Even if a roofing material not specified in them is used, the installation requirements remain unchanged for a long time.

Winter work

Repairing a soft roof in winter is a separate topic for conversation. Of course, it is not recommended to carry out any work on the roof during the cold season, but there are situations when it is simply necessary to carry out emergency repairs.

Important ! Repairs in winter should be carried out at an increased level of safety.

In winter, it is worth doing the restoration of the roofing if:

  • the roof of the house was seriously damaged (due to a snowstorm or when a large and heavy object fell);
  • the amount of snow that has fallen has caused the roof to sag;
  • the thaw led to the formation of leaks.

Clearing a soft roof from snow cover before starting repair work

Any of these situations can lead to deformation of the roof, as well as walls and ceilings; cause a short circuit or even a fire. To avoid this, it is recommended to restore the roof immediately, especially since this can be done at almost any air temperature.

Like any other complex repair, winter activities must be carried out in compliance with certain rules:

  1. The choice of roofing material. Low temperatures are bad for many types of coatings, so it is very important to choose an option that will not break in the cold.
  2. Among the materials recommended for repair, it is worth noting: soft tiles, corrugated board, metal tiles. For work, it is better to choose frost-resistant sealants that react neutrally to sub-zero temperatures.
  3. It gets dark quickly in winter, so you should think about lighting the roof in advance, otherwise you can interrupt work immediately after dismantling the roof at the site of damage.
  4. Security. It is worth considering in advance the clothes and shoes for work. In addition, you need to take with you everything you need to protect yourself from bad weather.
  5. Snow must be removed from the roof before repairs can begin. To do this, use a scraper with a rubberized surface.
  6. The patch material must be kept warm until the very last moment.
  7. Roof repair in winter should be entrusted to professionals, since in difficult conditions it will be difficult for an amateur to cope.

It is possible to carry out any roof repair work by working with a partner. However, you shouldn't do this on your own. You can still install a new roof yourself, but it is advisable to call professionals for repairs. Only in this case, you can be sure that the assessment of the condition of the roof will be carried out correctly, the estimate is drawn up taking into account all the features of the repair, the necessary materials have been purchased and all work has been carried out in accordance with the requirements of regulatory documentation.

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