Liquid rubber after 3 years of roof operation. What is the liquid waterproofing of a rubber roof and the rules for its use. Repair of a soft roof using liquid rubber

30.10.2019

Every roof needs some type of roofing material to serve as the building's front line of defense against the weather. Therefore, the construction industry constantly offers novelties on the coating market, and one of them is liquid roofing. Its operational properties and features will be discussed further.

Bitumen, like many years ago, is the basis for many roofing materials, especially for flat roofs, due to its specific chemical-physical properties.

Based on it, novelties are constantly being developed, and one of them is liquid rubber. It is bitumen-polymer containing one or more components in its composition.

Strictly speaking, "single-component" compositions can only be called as such conditionally, since they are ready-made mixtures of various substances, ready for use and not requiring mixing and other additional operations.

At the moment, liquid rubber for roofing is one of the most technologically advanced materials in the device and unpretentious in operation.

It is used both independently and as a waterproofing for other types of coatings - and, unlike classical films and membranes, it is applied over the base.

There are practically none on which liquid roofing could not be applied due to its high degree of adhesion (penetration and adhesion).

Among them:

Monolithic and precast concrete
Cement strainer
Wood
Metal
Tiling (including as a bottom waterproofing layer)
Slate
Old coatings from roll materials

At the same time, a special advantage of the material is that on the roof, where the liquid roof is applied, the roof, as such, can be of any shape, and with the most complex geometry.

The advantages of this mastic include:

Creation of a solid roofing carpet without seams
No connection problems at the locations of various over-roof structures
High elasticity
Durability (20 years or more)
Ease of application and fast curing
High water resistance even under extreme conditions
Chemical and biological resistance
Wide operating temperature range (-60 - +110 °С)
Ecological safety (can be used even indoors)
Low material consumption (1-3 kg/m2)

The material is also applied in almost any way:

brush
Roller
Spatula
rubber squeegee
spraying plant

At the same time, high fire safety is ensured, since this roof is arranged in a cold way, without the use of open fire.

Hardening occurs almost immediately after application. You can walk on the coating, and full readiness comes in a day.

Minimum preparation is required, similar to a conventional screed or surface painting: cleaning from dirt, degreasing, if necessary - a primer

Important information! Degreasing and priming work must not be carried out using substances based on petroleum products.

A particularly effective area of application of the material is the repair of the roof with liquid rubber. As a rule, it is performed on the old coating of rolled materials.

It is noteworthy that in this case, both when completely covering the old roofing carpet, and when applying repair patches, the removal of the old coating is required only in places of chipping. Even bubbles, after cutting them, can be filled with mastic.

Advice! In order to save money, when installing a roof covering, you can use rolled material as the main material, and process it with bitumen-polymer mastic. difficult sections– junctions, vertical and inclined surfaces, etc.

Of course, no material is without flaws, and liquid roofing also has them.

These include:

Relatively high price
Sensitivity to solvents and other petroleum products
Possibility of removing the coating, if necessary, only mechanically

However, the advantages still outweigh: the speed of the device, the possibility of applying to vertical surfaces (without subsequent slipping under the influence of heating by sunlight) - this material has no equal. Separately, it should be said about the high elasticity.

Thanks to her, when the temperature changes environment, even the sharpest - the roof will work together with the base, which will not allow damage to occur either in the coating itself or in the places where the carpet adjoins various elements of the roof.

When installing additional protective layers (substrates from below and a hard coating - screeds, cement tiles etc.) on such material as, for example, Reinforced liquid roofing can be exploited.

Although mastic is usually produced in black, there are also color options. It can also be tinted with organosilicon or water-based dyes.

The remarkable properties of liquid rubber (although it's not actually rubber, it doesn't have the obligatory rubber in it) make it a versatile and very practical coating.

And if you additionally cover it with protective paint from ultraviolet radiation, such a roof will last much longer than the 20 years stated in its characteristics.

The performance of a flat roof is largely dependent on quality.

Experts in the field of advanced roofing technologies, having set out to significantly increase the turnaround time for the roof, received an innovative material as a result of research - liquid rubber.

It meets all the necessary requirements and is considered the most effective and reliable way to ensure water tightness.

Due to its excellent adhesion, liquid rubber is suitable for any type of substrate: it is applied to concrete screed, wooden flooring and even on the old roofing material.

Moreover, the roof can be with the most complex relief, a large number of complex nodes - the method of applying waterproofing allows you to create a seamless monolithic surface of any shape.

Flat roofs can be:

. Waterproofing such a roof is the most important part of the arrangement, allowing you to use the space to the fullest;
lightweight. Ensuring complete watertightness contributes to the growing popularity of lightweight flat roofs, which give the building a modern look. There are a huge number of projects of such houses - the variety of styles is most clearly represented in private buildings.

For many years, a waterproof barrier should provide comfort and coziness to the inhabitants of the last floor, protecting it from moisture penetration. And on the roof, in the meantime, you can equip sports ground or recreation area.

What is a material?

Liquid rubber is obtained without the use of solvents.

To produce a bitumen-polymer emulsion, the smallest particles of molten bitumen are mixed with water and polymers, as well as various plasticizers.

A coagulant is also needed - a hardener.

Bitumen-polymer water emulsion is applied cold.

In the process of spraying onto a flat roof with the help of special two-channel equipment, two solutions (emulsion and hardener) are mixed, and immediately the liquid mass hardens, forming a reliable waterproofing membrane - a rubber-like seamless coating.

Strictly speaking, there is no rubber in the composition of the material, therefore sprayed waterproofing is not rubber in the usual sense and got its name due to properties such as elasticity and stretchability.

one-piece cover provides absolute tightness. Seams - the most vulnerable points of any waterproofing - are absent here;
adheres well to almost any surface, including old waterproof coatings;
has excellent elasticity;
has high tensile strength;
does not crack, does not crumble, does not become brittle at low and high ambient temperatures - this makes it possible to use bitumen-polymer emulsion in regions with difficult climatic conditions;
provides anti-corrosion protection;
can be used on inclined surfaces;
work is carried out quickly - according to experts, two people can cover up to 1,500 square meters in one day. m.

Disadvantages of liquid rubber:

certain installation difficulties - application is carried out according to special technology and also in certain weather conditions;
not solvent resistant.

It is possible to apply a coating that protects against water only in the absence of precipitation and temperatures from +5 degrees - the composition of the two-component waterproofing includes water that can freeze.

After hardening, negative values, as well as temperature changes, will not be terrible for the coating: without loss of quality, the material will last 20 years or more.

The thickness of the sprayed layer is only 2 mm, but it will be a mistake to believe that several layers of roofing material are more reliable than a modern membrane.

A slope-forming layer is formed on the roof - it can be small, 2 or 3 degrees - this is enough so that water does not accumulate in the center.

Waterproofing process flat roof using liquid rubber includes several mandatory steps: cleaning the surface of the base from all kinds of debris, applying a primer and directly spraying liquid rubber.

Roof cleaning and priming

The compressor cleans the entire surface of a flat roof.

The method of cleaning with pressurized water is also effective, however, after such cleaning, the roof base must be thoroughly dried.

Freshly poured concrete is polished to remove the top layer.

The spraying of the waterproofing layer is carried out:

in a mechanized way - with the help of special equipment;
manually - all the necessary components are mixed, and the liquid composition is applied with a brush, roller or spatula.

Roof repair

The material is also indispensable in the reconstruction of the roof. The old roofing carpet made of rolled materials can not be dismantled if it is in a satisfactory condition.

For junctions, it is necessary to reinforce liquid rubber with geotextiles.

In order for the waterproofing layer to last longer, it is recommended to cover it with a special water-based or organosilicon-based paint - for additional protection against ultraviolet radiation.

Liquid rubber is popularly called a popular material used for, based on petroleum bitumen. Professionals know how versatile this is, but inexperienced craftsmen often underestimate bulk waterproofing. Liquid rubber can be used to build a flat roof, repair old ruberoid coatings with your own hands and protect the roof and foundation from moisture. In this article, we will dwell on its composition, properties and methods of use.

Liquid rubber is a popular do-it-yourself roof waterproofing material made from bitumen emulsion. It is a thick, viscous, fluid liquid that solidifies 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 the bitumen emulsion, this waterproofing material includes:

polymer additives. They improve the properties of liquid rubber, making it more resistant to temperature changes and mechanical damage.
plasticizers. The task of plasticizers is to make the consistency of the bitumen emulsion more fluid and elastic, as well as to increase the adhesion of the composition.
hardeners. The hardeners are responsible for setting this do-it-yourself roof waterproofing agent after application.

Important! The composition of this waterproofing agent does not resemble real rubber in any way, it is so called because it retains elasticity and ductility even after hardening. In production, this waterproofing material is poured into metal barrels of 200 liters or into smaller containers.

Properties

Liquid rubber is a versatile roof waterproofing agent 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:

Solidity. After the composition has hardened, a monolithic waterproofing layer is formed on the roof surface, which does not allow moisture to pass through, and also does not have joints or seams where leaks can occur.
High adhesion. This waterproofing material is able to penetrate into small cracks and pores in the base of a roof made of wood, concrete or even metal without additional priming.
Weather resistance. The temperature range in which liquid rubber can “work” is from -75 to +95 degrees, which is quite enough for trouble-free operation throughout Russia.
Ease of application. This waterproofing material can be used for vertical and horizontal surfaces. The composition can be applied with a brush, roller or spray gun.

Please note that the disadvantages of this waterproofing agent are considered to be a rather high price and low resistance to ultraviolet radiation. In order to protect the roof covered with liquid rubber from direct sunlight, it is recommended to treat it with water-based or silicone-based paint.

Possibilities of use

As already mentioned, liquid rubber can be used in a wide range construction operations. It differs fundamentally from other waterproofing agents in its consistency, which allows it to be applied to vertical and horizontal surfaces, as well as to cover up narrow cracks and joints. It can be used for the following purposes:

For flat roof waterproofing. The waterproofing material is evenly spread over the roof surface until a uniform layer of the required thickness is obtained. This technology is called self-leveling roofing.
For priming the roof base before laying rolled and piece roofing materials.
To protect the foundation and other structural elements of the house from moisture. Bitumen gives the composition bactericidal properties, so liquid rubber retains materials well, protecting them from corrosion and decay.
For repair soft roof with your own hands. With the help of liquid waterproofing, you can repair cracks, tears, holes, or glue a patch on the surface of an old roofing felt.

Experienced craftsmen believe that the high price of the material pays off with the excellent performance of liquid waterproofing. It has been experimentally proven that a two-millimeter layer of liquid rubber is equivalent in efficiency to an eight-millimeter layer of rolled waterproofing materials.

Technology of use

Since the price of liquid rubber is quite high, it is necessary to carefully prepare the surface of the roof in order for it to work effectively. From quality preparatory work depends on the service life and waterproofing qualities of the material. Surfaces must be thoroughly cleaned of dirt, dust, and then dried, primed with mastic and laid a reinforcing layer of geotextile. After such preparation, you can apply liquid rubber with your own hands using one of the following methods:

Please note that in order to effectively protect the surface from moisture, do-it-yourself liquid rubber treatment is performed not once, but immediately 2-3 times. Re-application begins after the previous layer has set, which takes 5-9 hours.

Video instruction

Liquid rubber has recently become increasingly popular as a material for waterproofing roofs. Most often, liquid rubber is used to coat a flat surface. The use of liquid rubber on surfaces with a large area is one of the most convenient options, since working with this material, it is very easy to apply a coating even on complex details of the roof topography.

What are the advantages of liquid rubber

It is worth noting that liquid rubber has a number of undeniable advantages. These include, in particular:

ease of application with high labor productivity;
chemical resistance and environmental friendliness;
Fire safety;
reliable roofing;
high elasticity;
lack of seams;
resistance to various kinds of atmospheric influences and to ultraviolet rays;
complete protection against moisture;
durability.

It is more convenient to use than roll and membrane coatings. It is currently 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 main advantage of this material is its versatility. The connection with the base takes place at the molecular level, thanks to which a very high reliability of fastening is achieved, regardless of the texture or the material of the roof.

However, in fairness, its shortcomings should also be pointed out. Firstly, the cost of liquid rubber is quite solid. Secondly, it has a rather high sensitivity to solvents and to 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.

When covering the roof with liquid rubber, you should take into account the features of the use of this material.

The coating of a roof with liquid rubber can be most clearly seen when such a coating is applied to roofs that have a complex slope structure, or when working on large areas. A feature of liquid rubber is a very wide scope of its application, and it is possible to apply this material even on an old coating: it only needs to be cleaned of debris.

Roof coating with liquid rubber is carried out in one of three ways:

bulk;
staining;
cold spray.

However, regardless of which method is used, before starting work, it is necessary to thoroughly clean the substrate on which the liquid rubber coating will be applied. Remember that the preparatory stage is very important, since the final result largely depends on it, so the old coating should be cleaned as much as possible from granular dressing and completely remove the exfoliated roofing material. You need to remove all the dirt, all the debris, and then get rid of the dust. The application of liquid rubber over the old roofing material requires the mandatory installation of deflectors that pull out roofing cake moisture. In addition, in some cases, it is recommended to strengthen the waterproofing layer with geotextiles.

Let's move on to a more detailed consideration of how to apply a coating of liquid rubber on the roof.

One of the methods of its application is the bulk method. After cleaning the surface of debris, you need to impregnate the base with a bituminous emulsion. The thickness of this layer (it is also called a primer) should be from 1 to 2 millimeters. After that, liquid rubber is immediately applied to the base. It should be applied in certain portions, evenly distributed over the surface with the help of special rollers.

The thickness of this layer should be from 2 to 3 millimeters. It should be noted that the bitumen-latex mastic needs only a few seconds for it to begin to set, but in order for the work to be done efficiently, the applied layer should be allowed to stand for at least 5 minutes. After waiting for the required time, you can start applying the next layer - in most cases this is already finishing layer. The bulk method is used for flat surfaces, helping to level the roof itself as much as possible. For pitched roofs This option is generally not used.

The next step is to apply the main layer - on this stage rubber mastic is no longer diluted with water. We apply the composition to the surface with a spatula, so that in the end we get a layer with a thickness of 2 to 3 millimeters - a wide brush will also work for this work. The applied layer will dry completely after at least 48 hours. To ensure the uniformity of the application of the second layer as high as possible, it is recommended to apply it perpendicular to the direction in which you applied the primer - in this order of work, liquid rubber will fully comply with all declared characteristics. Note that this method is best suited for pitched roofs and small surfaces, when, from a financial point of view, it is simply unprofitable to use mechanical equipment.

And finally, the last of the methods is the spraying method. As mentioned above, first of all, the base is carefully prepared, after which you can proceed to the direct surface treatment with liquid rubber by spraying. To do this, a special apparatus should be connected to 2 containers. One of them contains a polymer-bitumen emulsion, the second contains calcium chloride, which acts as a hardener. Both of these components must be fed into the nozzle at the same time, they are mixed before spraying onto the surface.

Surface treatment with liquid rubber by spraying is in most cases used on large areas or on sloped roofs. The advantages of this method include, first of all, the speed of work and the quality of applying a layer of rubber. The applied material hardens almost immediately, so there is no need to wait for the rubber to harden. In addition, you can use the spraying method on any surface. The material here is applied using a sprayer, which means that you can process even the most bizarre designs without any problems.

Any building needs waterproofing, which is used for the base, walls, roof and other elements. It is the roof that requires special protection, for which liquid rubber is increasingly being used.

Peculiarities

Liquid rubber is modern material, which has excellent waterproofing characteristics. Such material is created on the basis of latex and bitumen emulsion. Liquid rubber can be used for roofing as a protection or self-covering.

After applying the rubber a short time begins to solidify, turning from a liquid material into a solid, elastic membrane without seams and joints. Such material can be used in various areas and roofs with complex structures. Liquid rubber cannot be compared with other types of waterproofing. This can be easily verified by examining its advantages.

Advantages and disadvantages

Roofing liquid rubber has a number of advantages and disadvantages. Acquaintance with this material will not be complete if you do not study these two sides.

The list of pluses consists of the following points:

uniformity and solidity of the coating, the absence of seams and joints;
achievement of maximum adhesive characteristics regardless of the coating material: concrete surface, wood or metal;
filling with liquid material of small surface defects simplifies the preparation stage;

elasticity allows the liquid rubber coating to increase in size and return to its original parameters. This advantage becomes relevant with temperature changes and changing seasons. Cracks do not form on such a coating, which makes it possible to call it durable and hardy;
the use of a mechanized application method reduces the time installation work and improves the quality of application. Fast and quality installation especially relevant when processing convex and complex elements;

environmental safety and the absence of toxic substances in the composition;
extensive scope of application includes residential facilities, industrial and commercial complexes;
the possibility of using a finishing coating and creating a base area that can be used for further operation;
a large number of shades and textures opens up huge opportunities for aesthetes and designers;
easy repair, requiring a minimum of time and finances. The possibility of repairing a small area without affecting the main area.

To this impressive list of advantages, the following disadvantages are added:

the need to use special equipment for applying liquid rubber to the roof;
high requirements for the surface preparation process;
the presence of requirements for environmental conditions that must be maintained throughout the installation work;
the difficulty of dismantling a coating created from liquid rubber.

Varieties

The market for liquid rubber for roofing is actively developing. Already now there are many varieties of this material, which makes roll materials no longer relevant.

Classification can be based on various principles.

One-component material has a liquid consistency, low viscosity. The color palette is varied, which opens up great opportunities for choice.
A two-component mastic liquid roof, in addition to the main components, also includes a hardener. The components are mixed immediately before application to the surface.

The sprayed material is still recognized as the most promising due to its high quality and quick installation. Definitely requires the use of special equipment.
Painted rubber is available in a wide range. It can be liquid and pasty. After hardening, it forms a film on the surface. Installation is carried out using a hand tool.

Self-leveling roofing is an economical option and is usually used before installation of the coating. The material is simply poured onto the prepared surface and leveled with a special hand tool, resembling a mop.
Hot rubber is more suitable for bituminous surfaces. The seamless surface provides reliable protection for the roof and the building as a whole.

cold material contains a solvent, is more mobile and convenient for installation. With such material you can work independently. On hand you need to have gasoline or kerosene, which may be required to dilute the rubber.
Ureplen was developed recently by the military-industrial complex. Initially, such material was used exclusively for the military and defense industries, so its characteristics are at a high level. It can be used equally on flat and sloped roofs.
Liquid rubber can have a different base, bitumen and polyurethane foam are most often used. The second option is more innovative, durable and hardy. Although bitumen is not going to go by the wayside yet, as it is a proven, affordable and high-quality option.

How to choose?

At the time of purchase, you must carefully study liquid material. Large elements cannot be present in its composition, waterproofing must be uniform, homogeneous and smooth. Otherwise, when laying the surface will not be smooth and of high quality. The packaging label must have a stamp corresponding to GOST. It is necessary to pay attention to the expiration date and the integrity of the package. If there is even the slightest doubt, it is necessary to refuse the purchase.

Miscellaneous materials can be applied different ways. Each manufacturer puts on the packaging recommendations for use and the required thickness at which the material will provide adequate protection. Do not deviate from these recommendations.

To determine which rubber is the best, it is worth studying the market offers. It is better to give preference to well-known companies that have managed to earn the respect and recognition of the consumer.

Manufacturers

Many companies are engaged in the production of liquid rubber. There are both domestic and foreign representatives among them. It is easy to get lost in such an assortment, so you should pay attention to the most popular and worthy manufacturers, whose products will not be a disappointment.

You should start with a Russian manufacturer, or rather, with a whole group of companies "Partner-Story". It supplies the market with several products at once: Euromast, Euromast Plus and Euromast Color. These products are chosen for high quality, reasonable cost and a large assortment.

At the company's production facilities "Rise" high-quality liquid one-component rubber is produced "Blockade". Such material fully complies with international standards that apply to waterproofing materials of this type. Pleased with an acceptable cost, which overshadows the products of many manufacturers. The company offers discounts for bulk orders.

Another worthy domestic manufacturer is the company "LKM USSR". It is engaged in the production of a wide range of polymeric protective materials, including liquid rubber. These products are widely used in the construction of the industrial and civil sectors of Russia. Waterproofing is produced on the basis of developments that were created for the military-industrial complex of the USSR, and long time remained secret. Liquid rubber is based on bitumen, which is ideal for waterproofing protection of various types of surfaces.

Organization "Synthetic Polymer" is part of the company Nippon Ace, which is engaged in the production, development, promotion and sale of polymer compounds. These materials are off-season water-displacing compositions that have a wide range of applications. There are no analogues of this product, none of the existing manufacturers yet produces such material.

Application equipment

For high-quality application of the material, it is necessary to use special equipment. As such equipment, a mobile spray gun is mainly used. Its preparation is the first stage from which rubber spraying begins. The pulverizer mechanism consists of a dispenser and a mixing device. In most cases, gasoline is used as fuel, not electricity. This feature ensures mobility, compactness, autonomy and ease of use. With this set of features, work is possible even in hard-to-reach places.

And also the mechanism includes a long hose, the length of which can reach 150 meters. Due to this, during the installation process there is no need to constantly move the device around the roof area. The environmental friendliness of the material allows you to do without individual means protection even when working indoors.

Instructions for use

When processing the roof with liquid rubber, it is necessary to strictly adhere to the application technique.

Otherwise, the end result may be disappointing.

For work, you need to choose dry weather with an air temperature above +5 degrees.
The base must be carefully prepared for further work. The essence of this stage is to clean the working surface. There should be no pollution left, not to mention rubbish. In the process of purification, a powerful pressure of water or burning can be used. The latter method is applicable for greasy and other difficult stains.

Priming is the next stage, the essence of which is to create a primary layer of waterproofing on the prepared surface. The device of the future roof directly depends on the quality of priming, so you need to take this stage seriously. The result of this step will be the elimination of the smallest particles of dust, contaminants invisible to the eye and ensuring maximum adhesion between the surface and liquid rubber.

The installation technology is completed by applying liquid rubber by spraying. It is necessary to strive for uniformity of the layer. It will be easy to do this if you observe a right angle between the base and the atomizer. And also you need to adhere to the same distance that will be maintained between the base and the extreme point of the atomizer.
The constituent materials of the solution are mixed directly during spraying. For this, the equipment has a special compartment. The width of each strip should be within 1–1.5 m. The transitions should be cross-shaped.

On the flat roofs several layers are sprayed, their number can reach three.
Armature must be present. For this purpose, geotextiles or fiberglass can be used.

Consumption per 1 m² with a layer thickness of 2 mm is 3 liters of liquid rubber. The solidification of the material depends on external conditions. At an air temperature of +20 degrees and a humidity of not more than 50%, it takes three days to completely solidify. Liquid drops may appear on the surface, which is normal. The reason for this phenomenon is the work of the catalyst.