Liquid rubber is popularly called a popular material used for, based on petroleum bitumen. Professionals know how much it is universal remedy, but inexperienced craftsmen often underestimate self-leveling waterproofing. Liquid rubber can be used to construct flat roof, repairing old roofing felt coatings with your own hands and protecting the roof and foundation from moisture. In this article we will dwell in detail on its composition, properties and methods of use.
Liquid rubber is a popular material for do-it-yourself roof waterproofing, made from bitumen emulsion. It is a thick, viscous, flowing liquid that hardens on the roof surface at a temperature of +5 degrees. After hardening, liquid rubber forms a durable, monolithic layer that does not allow moisture to pass through. In addition to bitumen emulsion, this waterproofing material includes:
Important! The composition of this waterproofing agent is in no way reminiscent of real rubber; it is so called because even after hardening it retains elasticity and ductility. In production, this waterproofing material is poured into metal barrels 200 liters or smaller containers.
Liquid rubber is a universal product for roof waterproofing with a wide range of applications. It is characterized by high water resistance, elasticity and ease of application by hand. The advantages of this material are considered:
Please note that the disadvantages of this waterproofing agent are its rather high price and low resistance to ultraviolet radiation. To protect the roof covered liquid rubber, from straight lines sun rays It is recommended to treat it with water-based or silicone-based paint.
As already mentioned, liquid rubber can be used in wide range construction operations. It differs fundamentally from other waterproofing products in its consistency, which allows it to be applied to vertical and horizontal surfaces, as well as to be covered over narrow gaps and joints. It can be used for the following purposes:
Experienced craftsmen believe that the high price of the material pays off with excellent results. performance characteristics liquid waterproofing. It has been experimentally proven that a two-millimeter layer of liquid rubber corresponds in effectiveness to an eight-millimeter layer of rolled waterproofing materials.
Since the price of liquid rubber is quite high, it is necessary to carefully prepare the roof surface for it to work effectively. From quality preparatory work The service life and waterproofing qualities of the material depend. The surfaces must be thoroughly cleaned of dirt and dust, and then dried, primed with mastic and a reinforcing layer of geotextile laid. After such preparation, you can apply liquid rubber with your own hands using one of the following methods:
Please note that for effective protection Surfaces from moisture are treated with liquid rubber with your own hands not just once, but 2-3 times at once. Re-application begins after the previous layer has set, which takes 5-9 hours.
Soft roofing has a multi-layer structure and is made from flexible roofing materials. Thanks to its advantages, it has rightfully taken a leading position among other types of roofs. However, along with all its advantages, it also has a lot of negative sides. Defects quite often form on soft roofs, the cause of which can be both physical influences and environment. To eliminate them, special materials are used for repairing soft roofs. Most often, repairmen use liquid rubber, mastic or waterproofing.
First of all, you need to determine the condition of the coating. After all, how damaged it is depends on what repairs will be. And depending on the type of repair, the choice of materials will depend. In this regard, the first point is to determine the type of repair needed, which can be:
The first type is also called current. If there is minor damage to the coating that cannot lead to serious (global) consequences, then after a preliminary inspection, Maintenance. Wherein complete dismantling old coating is not produced. Everything is limited to simply correcting deformations with liquid rubber. Bituminous mastic is also often used for such repairs.
Important! Major repairs are carried out in cases where the damage is sufficiently extensive and can lead to serious consequences. IN Lately The waterproofing repair method has proven itself well.
This material is increasingly used when carrying out repair work. Liquid rubber creates a completely seamless coating that does not allow water to pass through. It can be used both for sealing small gaps, cracks, and other damage, and for a solid coating.
When repairing with liquid rubber, you should remember its composition. The basis of this material is a bitumen-latex emulsion, sprayed with calcium chloride powder. The advantages of this type of material are:
Elimination of deformations is carried out in the following ways:
When using mechanical method The time spent on work is significantly reduced. This reduces consumption. Compared to him, manual method longer. With it you need to apply rubber in layers. Each layer must dry for at least 7 minutes. Naturally, the speed of application with a roller or brush is significantly lower than with mechanical spraying.
Repairing with liquid rubber has many advantages. First of all, it does not need to be heated or prepared in any way. The only thing that is necessary is to clear the roof of debris. Secondly, it is extremely elastic and very durable. In this regard, carrying out restoration work liquid rubber is gaining increasing popularity. Coating a flat roof with liquid rubber https://www.youtube.com/watch?v=iNCZQYehhG8
Mastic can be applied in two states: cold and hot. The application temperature depends on which type was chosen. For cold application, mastic containing a special solvent is suitable. Hot type do not contain this component.
Depending on what chemical composition, this material divided by:
But regardless of this, any of them has a number of advantages:
What you need to know about mastic https://www.youtube.com/watch?v=5E4PuZKf6AU
Mastic is the most common material that is used not only to eliminate cracks or other defects. Hot mastic is applied a year after laying the roofing material. The grease performs protective functions. To eliminate a defect (for example, bloating), the following technology is used:
Cracks near walls and ceilings are treated in the same way as regular swellings. The only difference is the size of the patch. IN in this case the mastic is secured with a patch bigger size. Flat roof repair bitumen mastic https://www.youtube.com/watch?v=anf-LBGJydU
This material, unlike liquid rubber and mastic, is used more often for major renovation. With this type of work, it is necessary to completely dismantle the old waterproofing coating.
Hydroisol has the following structure:
Features of roof waterproofing https://www.youtube.com/watch?v=2_94FfG5cmY An example diagram looks like this:
Repair various roofs using waterproofing https://www.youtube.com/watch?v=1t1dJC6vqhI Roof repair depends on several points. First of all, they take into account how badly the coating is damaged. If there are not many deformations and they are not large, then current renovation work, in which liquid rubber or mastic is used. For more serious damage, resort to waterproofing.
IN last years Liquid rubber, or seamless insulation, is becoming increasingly popular for roof waterproofing work.
It is used to create waterproof, chemical, weather and heat resistant waterproofing coatings on the most different surfaces regardless geometric shape and inclination angle.
Most often the material is used for flat surfaces. This is explained by the large area of objects with a flat roof - up to several thousand square meters. Such scales significantly complicate the waterproofing process.
When using liquid rubber, the picture changes fundamentally: as the area to be treated increases, the work becomes easier, since this material easily covers even the most complex details of the roof topography: pipes, canopies, various parapets, protrusions.
The big advantage of liquid rubber is the possibility of better and faster implementation. necessary work than when using rolled waterproofing materials.
Today, a huge variety of roofing mastics are produced. According to their composition they are divided into two main categories:
The first group includes materials that are arranged in the proportion required for application and further hardening.
Multicomponent mastic can be represented by several components. It must contain at least two ingredients: a base element and a curing catalyst.
Mastics consisting of two elements are called two-component. Liquid rubber is one of the types of materials in this group.
It should be noted that the name of the material does not convey its essence. This term is erroneous and was chosen for only one reason: it is the most convenient for consumers.
In appearance, this coating resembles rubber: it is black, has a viscous consistency, and is waterproof. The resemblance to rubber is limited external signs. The base of this material is not rubber, like rubber, but bitumen.
Israeli manufacturers - the creators of this substance - are categorically against the term “liquid rubber” and propose calling this type of coating seamless sprayed waterproofing. The proposal is not accepted, since the name is quite difficult for the average consumer: for most potential buyers it is puzzling. This is the reason for using the slightly incompetent but completely understandable designation “liquid rubber”.
By the way, a material of this type was created in the seventies in the USSR, but due to the low quality of the bitumen used, it was not widespread.
Liquid rubber is a cold applied mastic. The basis of the substance is a water emulsion of polymer-bitumen type.
A distinctive feature of rubber is instant curing. Since it is produced on water based, then the evaporation of toxic substances is reduced to a minimum.
The waterproofing seamless coating “Liquid Rubber” not only has a high degree of environmental safety, but also allows you to cope with construction work in as soon as possible and provide a durable coating with a long service life.
Some types of mastic are applied by spraying. Thanks to this, joints and seams do not appear. Spraying makes it possible to use rubber for structures of any shape. Since the substance has low fluidity, it can be used to treat even vertically located surfaces.
The material does not deteriorate under the influence of ultraviolet irradiation and retains its qualities at elevated temperatures.
Depending on the used polymer additives, bitumen, specific brand and manufacturer, the lowest bending temperature on a beam can be 20 degrees. There are special types of liquid rubber developed for particularly cold regions (for example, Yakutia); they can be used at temperatures down to minus 60 degrees.
Since bitumen contains essential oils, over time they can evaporate. In this case, a special reaction is observed - bitumen aging effect. This process can be avoided thanks to the polymer contained in the mastic, which creates a film that prevents evaporation and prevents the aging of the bitumen contained in it. As a result, the service life of this coating is 20 years or more.
Liquid rubber is very elastic (its KPU is more than 1000%) and at the same time durable. Thanks to these qualities, it does not peel off even after sudden changes in temperature, humidity level, pressure, and surface vibration.
The membrane surface retains its properties even after complete hardening and does not lose them for a long time.
When using liquid rubber, you can do without further maintenance of the treated surface. If necessary, the material can be easily restored and repaired.
The created coating is resistant to mechanical stress, it is fireproof, does not deteriorate under the influence of most used construction work chemical substances.
Rubber combines perfectly with water-based (solvent-free) paints. This quality allows you to choose the color according to the customer’s wishes.
There are three types of liquid rubber:
– manufactured and formed right on the venue waterproofing works.
– installation of waterproofing is carried out by applying liquid and paste film-forming materials using conventional paint brushes, brushes and spatulas. The work is done manually.
– application is carried out by cold spraying, using special equipment RX-27. This method is distinguished by the ability to quickly complete all work and the high quality characteristics of the resulting coating.
Sprayed liquid rubber is classic version liquid material for carrying out waterproofing work, and it occupies one of the first positions among the materials used for waterproofing.
When applying the substance to the surface to be treated, use a special spray bottle. The material hardens almost instantly. There is no need to preheat the surface, which means the process is completely fireproof.
Application by spraying allows you to use the substance sparingly and obtain a uniform layer. The thickness of the coating should be 2 mm.
When applying a layer, a special mobile dosing and mixing device is used on gasoline engine weighing 68 kg. The equipment is very convenient to use, since there is no need for power supply. It can also be used in hard to reach places, since it is equipped with 150-meter hoses, allowing you to dispense with moving the entire device.
Liquid rubber has been tested for compliance with the safety regulations.
When working with material both in open and in indoors There is no need to use personal protective equipment as it is odorless and does not emit toxic substances.
Liquid rubber can be applied even to a damp surface, although it is still recommended to dry it first.
Applying mastic is a very easy and quick process. Thanks to its exceptional qualities, up to 2000 square meters can be processed. meters of surface per day.
Liquid rubber has a number of undeniable advantages:
Among the disadvantages of the material are the following:
Liquid rubber can be used for application to the following materials:
Liquid rubber is more practical and easy to use compared to membrane and roll coverings thanks to the cold application method. It represents the most modern method surface protection. The material is used both in the construction of new facilities and during the repair and reconstruction of old buildings.
The main advantage of liquid rubber is its versatility: since its adhesion to the material occurs at the molecular level, it provides a strong hold on a material of any quality and texture.
When applying a coating to old waterproofing, the moisture accumulated during the period of use of the old coating is removed using special deflectors. If necessary, geotextile reinforcement of the coating can be carried out. 
The use of liquid rubber is very convenient when processing surfaces with big amount adjacencies. For such roofs, roll-type materials are simply useless. A high degree of vibration resistance makes it possible to use liquid rubber for roofs with ventilation outlets.
The material provides protection from vibration of the ventilation system, and it does not in any way affect the properties of the insulating material. In addition, rubber reliably isolates joints and junctions from moisture.
The low level of sensitivity to temperature changes makes it advisable to use this mastic in both very cold and extremely hot weather conditions.
Liquid rubber is used on all types of buildings: in the construction or repair of private houses, industrial facilities etc.
Due to its universal properties, rubber is used not only as protective covering, but also as an independent roofing covering.
When applying liquid roofing rubber, as already mentioned, an airless two-channel dosing and mixing element is used.
Work must be carried out at a temperature of at least plus 5 degrees and dry weather. Rubber is best applied to a clean, dry surface, although it can also be sprayed onto a damp surface.
Before applying the material, the roof must be thoroughly washed using water washing machines operating under high pressure. After this, the surface must be dried. In the presence of greasy stains they must be disposed of by burning.
Before waterproofing begins, the following activities must be carried out:
Liquid rubber is applied to the roof in strips 1 to 1.5 meters wide. The layer should be uniform, with cross-shaped transitions. There should be no gaps on the roof surface. In areas where the roof is flat, a slip layer must be included. It is placed between the protective layer and the membrane. It is obtained by laying two layers, including geotextiles, fiberglass and polyethylene film.
Liquid rubber is often used to waterproof flat roofs. Features of the work are determined by the specific type of roof.
To obtain a waterproofing coating good quality, liquid rubber should be applied to a fairly smooth substrate. It is possible that the surface will not be perfectly smooth - the main thing is that there are no unnecessary objects or significant defects on it.
Only under this condition, during spraying of the material, the layer is distributed evenly and turns out to be approximately the same height. The degree of smoothness of the created liquid roof depends on what device was used.
When a high-pressure unit is used and the surface to which the coating is applied is sufficiently smooth, a seamless membrane is obtained. In this case, the spraying method is used.
When using devices operating under low pressure, the likelihood of obtaining a smooth surface is low. Most likely, bumps of different heights will appear on it, which will significantly spoil the appearance of the roof. If it is impossible to level the surface before spraying, it should be leveled using a screed. 
When applying liquid rubber to roofing slabs, the amount of polymer-bitumen emulsion consumed may increase. If there is a primer layer, it is necessary, as far as possible, to reinforce all connections located in the spaces between the insulating boards. It is necessary to put strips of geotextile in them.
The best way to apply liquid rubber is to coat the already applied screed layer with the compound. In this case, a smooth surface and an attractive appearance are guaranteed. appearance roofs.
The cost of liquid roofing rubber is influenced by several factors, the main ones being the specific type of material, its quality characteristics, price policy manufacturer and seller.
You can navigate prices based on specific examples.
Liquid roofing rubber CBS for installation and waterproofing of roofs on concrete base, roof repair soft type from deposited roll materials and PVC membranes and restoration of pitched roofs based on metal sheets, soft tiles and slate can be purchased for 97 rubles per kilogram.
ARCTIC roofing rubber CBS, which has increased frost resistance, is suitable for waterproofing roofs in the Far North. Using this material you can carry out installation and waterproofing soft roofs on a concrete base, as well as waterproofing and repair work of the roof from PVC membranes and fused rolled materials; repair and waterproofing of pitched roofs based on slate, metal sheets, soft roofing tiles. It can be purchased at a price of 108 rubles per kilogram.
Universal liquid rubber GI, used for waterproofing vertical and horizontal retaining walls on a concrete base, as well as for corrosion protection metal structures sells for 89 rubles per kilogram.
How the process of applying liquid rubber to the roof occurs can be seen in the video.
Liquid rubber has recently gained increasing popularity as a material for roof waterproofing. Most often, liquid rubber is used to apply a coating to a flat surface. The use of liquid rubber on surfaces with a large area is one of the most convenient options, since when working with this material, it is very easy to apply a coating even to complex details of the roof topography.
It is worth noting that liquid rubber also has a number of undeniable advantages. These include, in particular:
It is more convenient to use than roll and membrane coatings. Currently it is one of the most modern species roof waterproofing. Liquid rubber can be used both in the reconstruction of old buildings and in the construction of new construction projects. The most important advantage of this material is its versatility. The connection to the base occurs at the molecular level, due to which very high reliability of fastening is achieved, regardless of the texture or material of the roof.
However, to be fair, its shortcomings should also be pointed out. Firstly, the cost of liquid rubber is quite substantial. Secondly, it has a fairly high sensitivity to solvents and substances that include petroleum products. Thirdly, it will be possible to remove liquid rubber already applied to the surface, if such a need suddenly arises, only mechanically.
The most obvious way to see the coating of a roof with liquid rubber is when applying such a coating to roofs that have complex design stingray, or when working on large areas. The peculiarity of liquid rubber is its very wide scope of application, and this material can be applied even to an old coating: it only needs to be cleaned of debris.
Roof coating with liquid rubber is carried out in one of three ways:
However, regardless of which method is used, before starting work, you should thoroughly clean the base on which the liquid rubber coating will be applied. remember, that preparatory stage is very important, since the final result largely depends on it, so the old coating should be cleaned as much as possible of grainy coating and the exfoliated roofing material should be completely removed. You need to remove all the dirt, all the debris, and then get rid of the dust. Applying liquid rubber over old roofing material requires mandatory installation deflectors pulling from roofing pie moisture. In addition, in some cases it is recommended to reinforce the waterproofing layer with geotextiles.
Let's move on to a more detailed look at how to apply a liquid rubber coating to a roof.
The thickness of this layer should be from 2 to 3 millimeters. It should be noted that bitumen-latex mastic only needs a few seconds for it to begin to set, but in order for the job to be done efficiently, the applied layer should be allowed to sit for at least 5 minutes. After waiting the required time, you can begin applying the next layer - in most cases this is already finishing layer. The pouring method is used for smooth surfaces, helping to level the roof itself as much as possible. For pitched roofs The use of this option is, as a rule, not practiced.
Surface treatment with liquid rubber by spraying is in most cases used over large areas or on sloped roofs. The advantages of this method include, first of all, the speed of work and the quality of applying the rubber layer. The applied material hardens almost immediately, meaning there is no need to wait for the rubber to harden. In addition, the spraying method can be used on any surface. The material here is applied using a sprayer, which means that you can handle even the most bizarre designs without any problems.
