Treatment of surfaces with bitumen has always been considered the most effective and affordable waterproofing of not only concrete or brick structures, but also metal pipes and tanks, wooden beams and other building materials. Bitumen can be called universal insulation. If earlier way its application caused certain difficulties - it had to be melted over a fire and applied hot - but today this misunderstanding has been eliminated from practice by the use of solvents. Bituminous mastic for waterproofing has a consumption that is quite consistent with its price, it is produced ready for use and the work on its application does not require more than 1-2 people, so the total cost of the coating is very affordable. It is also worth noting that previously bitumen waterproofing low temperatures broke and cracked. Now this issue has been resolved with the help of various plasticizers and polymer additives. In general, with the development of chemistry, the use of bitumen for waterproofing work has become not only easier, but also much more effective.

Today a huge amount is used various types mastic for waterproofing. They differ in composition, area of ​​application, method of application, type of binder and solvent. There are purely polymer mastics, but they are quite rare and are inferior in their properties to bitumen-polymer ones. Therefore, we will consider different types of bitumen mastics.

Types of mastics:

• bitumen mastic with mineral fillers, which may include chalk, cement, dolomite, ash, asbestos and other minerals;
• bitumen-rubber mastic, which may contain rubber crumbs or dispersed emulsion, sometimes requiring hot application;

  Bitumen-rubber mastic has high elasticity and good heat resistance, has low viscosity, which allows good wetting concrete bases

• bitumen-polymer waterproofing, which may include various fillers: rubber crumbs, minerals, and also an obligatory component is polymer material, for example, polystyrene or polyurethane;
• bitumen-emulsion mastic or primer: is an aqueous emulsion of fine bitumen dust, used mainly for preparing the surface before applying other mastics or roll materials.

  

  The primer is intended for preparing the base

• hot applied bitumen mastic or simply construction bitumen: consists of bitumen; To impart the elasticity necessary for application, heating to 300 °C is required, which presents certain difficulties.

Scope and features of working with the material

Toluene, solvent, gasoline or white spirit are most often used as solvents. For this reason, work with bitumen mastics in enclosed spaces must be carried out in accordance with safety regulations - use respirators and goggles. When working on outdoors in hot weather it is also better to use a respirator.

Bitumen-polymer mastics are most often produced without the use of organic solvents, which is a big plus, because allows contact of these materials with thermal insulation boards made of polystyrene foam and expanded polystyrene, they also do not emit flammable and toxic fumes.



It is better to work with glasses and a respirator

Also, the composition of mastics (mainly bitumen-polymer) may include reinforcing elements: various fibers, fiberglass particles, etc.

According to their intended purpose, there are bituminous mastics for waterproofing, carried out independently, for gluing rolled materials, for repairs roofing coverings, for waterproofing and repair of road surfaces and universal formulations. Modern manufacturers most often produce universal mastics that are suitable for various types of work. However, it is better to select a material designed specifically for the conditions in which it is intended to be used. This could be roofing mastic or mastic for waterproofing the foundation, a composition for coating metal pipes or bricks, etc.

In terms of performance properties, bitumen-polymer mastics are considered the best; they have excellent adhesion to the surface of all kinds of materials (concrete, metal, wood, brick, stone, roofing felt) and form a durable elastic film that retains its physical and chemical properties in wide range temperatures Also, bitumen-polymer compositions are more resistant to mechanical stress and durable. They are correspondingly more expensive than other types bitumen waterproofing.



Bitumen-rubber mastics have excellent elasticity

Bitumen-rubber mastics and mastics with mineral fillers are intended for both self-application as a waterproofing layer and for gluing roll bitumen coatings. They are also used for repairs existing coverage. Can be applied without dismantling the old one roofing pie, which is an undeniable advantage. Generally speaking, mastics with mineral fillers form a more durable, but less elastic coating than bitumen-rubber compounds. Therefore, for roofs, mastic with mineral fillers is preferable, but mastic for waterproofing the floor must be elastic, i.e. With crumb rubber or polymer.

Bitumen emulsions are used as a primer or primer before applying the main waterproofing. Can also be used independently for light capillary waterproofing concrete walls basements. Due to the very small particle sizes, bitumen dust penetrates deep into the structure of the material through capillaries and ensures good adhesion to the surface.

Pure bitumen is used in the construction of large-scale structures due to its low cost and almost zero shrinkage. When applying, you must adhere to labor protection standards, work in protective clothing and follow the rules fire safety, since bitumen - flammable material.



Construction bitumen is solid blocks

How to calculate mastic consumption for waterproofing

An important indicator of the material is its consumption. You can determine this parameter by reading the label, and if the consumption is not indicated, but the recommended minimum layer, you can calculate the approximate consumption. Typically, the composition of the mastic includes from 30 to 70% volatile solvents, i.e. after application, the shrinkage of the material will range from 30 to 70 percent, respectively.

Most often, the mastic consumption is indicated on the label. On average, from 2 to 4 kg of mastic are consumed for waterproofing foundations, from 3.5 to 6 kg for roofing, and for gluing roofing felt - 1 – 2 kg of cold applied mastic. The consumption of hot mastic is slightly higher than the average values, but does not go beyond the maximum. The figures are based on square meter area.

To achieve required thickness coatings when applied to vertical walls and walls with a slope, the mastic is rolled out in two or three layers. Each subsequent layer is applied to the dried previous layer of mastic.



A new layer of bitumen mastic is applied to the dried previous one.

Technology of foundation waterproofing with bitumen mastic

After the concrete has matured, the surface of the foundation walls should be cleaned of sand, dust and dirt. Then, for better adhesion, the area where the mastic is planned to be applied must be treated with a bitumen primer. If a significant portion of the emulsion has been absorbed into the material, another layer should be applied. The degree of thickness of the coating can be determined by the saturation of the black color that the treated surface acquires. The primer layer is applied with a brush or roller.

After the primer has dried (maximum 24 hours), you can begin applying the base layer. Any bitumen or bitumen-polymer mastic for concrete waterproofing is suitable for the job. If the consistency of the solution is too thick, you can slightly dilute it with white spirit and mix thoroughly with a drill and mixer. If you have to work on a frosty day, the mastic should be heated to a temperature of 40 - 50 ° C in a metal container.



The mastic should be heated carefully, avoiding contact of vapors with an open flame.

Waterproofing mastic is applied using a construction brush, roller or spatula. The layer should not be too thick and create streaks, but it should not be smeared either. After applying the first layer, you must wait until it dries, after which the second layer and, if necessary, the third are applied. More than three layers are rarely used.



For convenience, the roller can be attached to a long handle

If you use bitumen-polymer mastic, which does not contain organic solvents, you can glue foam insulation or extruded polystyrene foam. The above-mentioned materials can be installed on bitumen mastic, which contains solvents, only after drying, otherwise the solvents will cause warping of the insulation boards and corrosion of its structure at the points of contact.



Foam can be glued to the mastic for insulation

Modern cold-applied bitumen mastics have a number of advantages: they are relatively inexpensive, easy to apply and long terms storage This material forms a seamless, integral, hermetic coating, which, with the help of plasticizers and other targeted additives, does not crack when the temperature drops and has sufficient elasticity, strength and durability. However, if everyone can apply bitumen mastic, then a specialist must determine its applicability in a particular case. The same applies to the type of mastic, layer thickness, its composition and service life. In such matters it is better to trust professionals.

The most affordable and effective waterproofing has always been bitumen treatment of both brick and concrete structures, as well as tanks, wooden beams, metal pipes and other building materials. This is a universal type of insulation.

Previously, there were frequent difficulties during application - the bitumen had to be melted and applied while it was still hot. Nowadays such problems are eliminated thanks to the use of solvents. Mastic consumption at waterproofing works is about 2-3 kg/m2, it is available in finished form. No more than two people are required for application.

It is also worth noting that this coating used to crack and break at low temperatures. Now this problem has been solved with the help of various polymer additives and plasticizers. Thus, the development of chemistry had a positive impact on the quality of the product and the performance of work.

Types of mastics

Bituminous mastic is divided into many different types. They differ in solvents, astringent components, application methods, composition and scope of use. Regular polymer options- are more rare and, in terms of their characteristics, are inferior to bituminous ones. Among the main types it is worth highlighting the following:

• Primer, or emulsion composition, is an aqueous mass of finely ground bitumen dust, the main application is to prepare surfaces for roll material or other type of mastic.
• polymer mass, which contains fillers various types, such as minerals, crumb rubber. Polymer elements are mandatory components, which can be polyurethane or polystyrene.
• Rubber mastic has high heat resistance and excellent elasticity with low viscosity, due to which it is possible to thoroughly wet the concrete base.
• Rubber insulation contains dispersed emulsion or rubber crumbs. In some cases, hot application is necessary.
• Construction bitumen requires heating to a certain temperature to impart the required elasticity.
• Mastic with mineral additives, it may contain asbestos, ash, cement or chalk.

Why is waterproofing necessary?

The house itself and the materials used must be protected from melting snow, dampness, capillary and groundwater, regardless of what foundation technology was used. Bitumen mastic will allow you to do this inexpensively and practically. This measure will help prevent moisture from entering the basement and extend service life.

The porous structure of concrete quickly absorbs water, which allows dampness to penetrate the building and cause mold and mildew. In addition, over time, the reinforcement also begins to corrode, contributing to the appearance of cracks in the structure. A high-quality foundation protected from moisture is a guarantee long-term operation the whole house.

Dampness can have varying degrees of influence on the foundation; it depends on the presence of a basement, the type of soil, and the water level. Special protection is required for structures in the following cases:

• when constructing a building on waterproof soil;
• if the foundation has a lower elevation at water level;
• if the distance to groundwater is less than one meter.

Bitumen mastic for foundation waterproofing: features of working with the material

White spirit, gasoline and toluene are the most common solvents. That is why in indoors When working with such products, safety rules must be observed, in particular the use of goggles and respirators. The use of the latter is also desirable outdoors in hot weather.

Bitumen mastic for foundation waterproofing is made mainly without the use of organic solvents, which is undoubtedly convenient, since this allows contact with thermal insulation coatings made of polystyrene foam and polystyrene foam. They also do not emit toxic or flammable fumes.

The material may contain reinforcing particles: elements of glass fabrics, various fibers. According to their intended purpose, you can find universal mastics, for roof repairs, for working with road surface, for securing rolled material, for waterproofing.

What you should pay attention to

The stores mainly offer mastics universal type, suitable for various works. But for optimal results, it is desirable to select a material that is created for the intended operating conditions. This can be waterproofing tape, mastic for coating bricks or steel pipes, composition for or foundation and others.

Distinguished by the best performance characteristics, they have excellent adhesion with various materials, be it roofing felt, stone or wood, and also form an elastic, reliable film coating that does not change its chemical and physical properties over a wide temperature range.

It is worth noting the durability and increased resistance to mechanical stress; because of this, such foundation waterproofing is somewhat more expensive. The price varies among different manufacturers, but on average starts from 360 rubles per package (17 kg).

Quantity of material required

Mastic consumption is one of the important indicators. This parameter can be found on the product packaging. If it is absent, the minimum recommended layer should be marked, which will allow you to calculate approximate quantity composition for work. Mastic usually contains from 20 to 60% solvents, accordingly, shrinkage after distribution will be a similar percentage spread. Consumption can reach up to 4 kg/m2; if the foundation is waterproofed, the price of the work increases because of this, especially taking into account the fact that hot mastic is consumed somewhat faster. To achieve the required coating thickness, the material is rolled in several layers, each of which is applied after completely dry previous one.

Sealing tape

Waterproofing tape is an elastic, water-resistant material that is not affected by negative temperatures and can withstand significant water pressure. The base is polyester knitted fabric coated with thermoplastic polymer. The mesh structure of the knitwear ensures reliable fastening.

Combination facing covering and the tape forms a surface that is not affected by salt solutions, acids and alkalis. The material is resistant to aging and has an excellent level of stretch. Can be used for both external and internal work.

Self-adhesive tape

The use of self-adhesive waterproofing tape is possible in bathrooms, bathrooms and other internal works. It consists of nonwoven fabric, having an insulating polyethylene coating, and an adhesive one-sided surface with acrylic base. It is also used together with compounds for waterproofing in places of possible cracks and stress concentrations, on seams, at the junction of the floor and wall, on external and internal corners.

Preliminary work

After the concrete has fully matured, the surface of the foundation is thoroughly cleaned of dirt, dust and sand. To improve adhesion, the site where the mastic is intended to be applied is treated with. It is necessary to add another layer if the main part of the existing composition has been absorbed into the material. The thickness of the coating is determined by the intensity of the black tone in which the treated surface is painted. Using a roller or spreader, the primer layer is distributed.

Processing technology

The main layer can be applied one day after using the primer. Any bitumen mastic for foundation waterproofing is suitable for use. If it is too thick, it can be thinned with white spirit using a drill and a mixer for mixing. If work is carried out at negative temperatures, the composition is heated in metal form up to 40-60 degrees. Extreme care should be taken to avoid contact with open flames and resulting fumes.

Waterproofing with bitumen is carried out using a spatula, roller or special brush. The layer should be moderately thick, without the formation of streaks. To make work easier, you can use a long handle for the roller.

When using a bitumen-polymer product that does not contain organic solvents, insulation made of extruded polystyrene foam or polystyrene foam can be fixed on top. The specified materials are glued to the mastic with solvents only after it has completely dried, otherwise the structure of the boards will be corroded and warped at the joints.

Advantages of cold application products

Modern bitumen mastic for foundation waterproofing, GOST 30693 2000, has a number of advantages, including a long shelf life, ease of application and reasonable cost. This material forms a hermetically sealed unit seamless coating, which, due to the presence of plasticizers and other additives, does not collapse when the temperature decreases and has sufficient durability and strength. But if everyone can apply the composition, then in each specific case only a specialist should determine the applicability. This also applies to the period of operation, layer thickness and type of material.

Coating waterproofing is one of the most common methods of foundation waterproofing, which is associated with the ease of applying mastics, the absence of seams, and the possibility of use on building elements complex configuration and mechanized application (sprayed waterproofing).

The main disadvantage in using these materials is shrinkage, which can lead to rupture of the waterproofing. The mastic is applied from the water pressure side (on the clamp), and before backfill coating waterproofing requires mandatory protection, which can be made in the form of protective walls, the use of flat drains (profiled membranes), thermal insulation (XPS), etc.

Coating waterproofing should be used mainly for protection against capillary (ground) moisture and soil water in draining and low-moisture soils, when groundwater is 1.5-2 m below the basement floor level. With hydrostatic head it can be used if the pressure does not exceed 2 m for waterproofing from bitumen mastic and 5 m for waterproofing from bitumen-polymer mastic.

Coating waterproofing made from pure liquefied bitumen is not recommended due to the insufficient durability of bitumen coatings.

Waterproofing thickness

Bitumen or bitumen-polymer mastic should be applied 2-4 layers. The total depends on the depth of the foundation (see table).

Due to the fact that they are applied in a liquid state, compliance with the designed thickness of the waterproofing layer plays a decisive role. In this regard, control should include measurements of the thickness of the coating in wet and dry conditions. The wet film thickness is controlled with a comb or disk; the dry film thickness is measured with universal thickness gauges.

The disadvantage of mastic coating is that it is difficult to achieve a guaranteed thickness of the insulating film, especially with large slopes and uneven surfaces. Therefore, it is necessary to either carefully prepare the surface or increase the consumption of material. Both of these lead to an increase in the cost of coverage.

Consumption per 1 m2

Consumption of coating bitumen waterproofing in 2 layers - 2.0-2.5 kg/m2

Interlayer spacing

Each layer of bitumen mastic is applied only after the previous one has completely dried or hardened. If the next layer of mastic is applied after the previous one has not dried, this may lead to peeling or lack of necessary adhesion of the mastic coating to the base.

Waterproofing layer made from mastic is considered dry if its surface is not sticky when tested. The drying time of the mastic layer depends on the composition of the bitumen mastic, temperature and humidity, both the surrounding air and the base.

Waterproofing device (technology)

Preparing the base

• The base for coating waterproofing must be strong and continuous, with rounded corners and edges (radii 3-5 cm) or chamfered. In places of transitions from horizontal to vertical surfaces, fillets should be made to ensure a smooth connection of intersecting planes.
• A concrete surface with a large number of holes from air bubbles in order to prevent the formation of bubbles that burst after 10-15 minutes in the freshly applied mastic layer is rubbed with fine-grained cement mortars from dry construction mixtures.
• Especially dangerous for mastic waterproofing are “scallops” with sharp and prickly protrusions that form at the joints of formwork sheets that must be removed.
• The surface of the base is cleaned of dust, dirt, and construction debris.
• The surface to be waterproofed must be dry.

Substrate moisture- the most important indicator of the readiness of the surface for the application of bitumen mastic. The presence of moisture leads to the formation of blisters or detachment of the mastic from the surface.

The permissible surface humidity for bitumen (bitumen-polymer) mastic should be no more than 4%. Water-based mastics can be applied to damp (up to 8%), but not wet substrates.

The simplest moisture test involves laying concrete on a prepared surface. polyethylene film size 1x1 m. If condensation does not appear under it within 4-24 hours, then applying bitumen waterproofing is possible.

Primer application

• To improve the adhesion (adhesion) of the mastic to the concrete surface, the prepared base is primed (with a ready-made bitumen primer).

The primer can also be prepared from bitumen (grades BN 70/30, BN 90/10, BNK 90/30) and a rapidly evaporating solvent (gasoline, nefras), diluted in the ratio
1:3-1:4, by weight or bitumen mastic with heat resistance above 80 °C, diluted to the desired consistency.

• The type of primer (primer) must correspond to the mastic used.
• The primer composition should be applied over the entire surface in one layer, in places where the grout joins cement-sand mortar- in two layers.
• The bitumen primer is applied to the surface using a roller or brush. The base, which has dried after priming, is ready to begin installing coating waterproofing.

Applying mastic

• Bituminous mastic is applied to prepared surfaces on the humidifying side (water pressure side).
• The mastic is applied in layers with a roller, brush, spatula, or pouring. Each layer must be continuous, without breaks, of uniform thickness, with parallel stripes. The direction of applying bitumen mastic is from bottom to top.
• The next layer of mastic should be applied after the previous one has hardened and dried (there should be no traces of astringent on the attached swab).

Waterproofing reinforcement

In places of abutments and interfaces where cracks may form, locations of cold seams, identified cracks in monolithic concrete and so on. defects, the coating waterproofing must be reinforced.

The fiberglass material is embedded in the first layer of mastic and rolled with a roller, which ensures a tight fit of the panel to the base without the formation of voids underneath. After the “bitumen mastic - reinforcing material” system has dried, a second layer of mastic is applied. Overlap of a strip of fiberglass or fiberglass on both sides of the axis problem area must be at least 100 mm.

The presence of reinforcing material in the waterproofing coating leads to the distribution of tensile load over the entire insulation strip, reduces the elongation of the material at the crack opening, which ensures the preservation of its continuity, reliability and durability of the waterproofing.

Backfilling of walls with coating waterproofing should only be done with soft soil, protective covering(screeds, walls) are not required in this case.

The Technoprok company offers special coating liquid rubbers that are easy to use,

bitumen mastics for foundation waterproofing

with your own hands or someone else’s, not very experienced, but easily and reliably, with “Hurray!”

To get it right do your own foundation waterproofing, we recommend paste mastics Elastomix and Elastopaz, as well as bitumen-polymer primer PazPrimer or Technoprok primer.

These are high-quality environmentally friendly materials produced in Israel at the Pazkar plant. In Russia, these materials are called one-component liquid rubber, in the West they are classified as cold bitumen-polymer mastic on water based.

Do-it-yourself foundation waterproofing video materials

To better understand how bitumen foundation waterproofing is done with your own hands and what are the rules for independent work with bitumen you need to know, look at 2 slideshows.

The first shows the repair of the foundation waterproofing (dug out a year later), and the second shows foundation waterproofing bitumen mastic at the construction stage.

The first slide show (70 photos) clearly shows how to properly waterproof a foundation with your own hands. You can see all the stages:

1. primer with bitumen-polymer PazPrimer;
2. waterproofing the foundation with bitumen mastic;
3. protection and thermal insulation of waterproofing;
4. installation of an insulated blind area.

The repair of the foundation waterproofing was shown here, since during construction for some reason they decided that the cottage was located on a dry site, with low level groundwater. But six months later in the spring, the owner of this house realized that he, too, needed waterproofing of the foundation.

The trench dug was narrow, so the option of automated application of liquid rubber was impossible. Decided:

waterproof the foundation with your own hands using bitumen mastic

Please note that not just bitumen is used, but water-based bitumen mastic, modified with polymers, and is applied cold, without heating.

Now look at another slide show, which shows the bitumen waterproofing of another foundation. Here, the option of automated application of liquid rubber was impossible due to large quantity formwork racks. Therefore, it was decided to waterproof the foundation with Elastopaz bitumen mastic. The work was carried out in the fall of 2014 by the dealer Technoprok in Kazan.

In the video, in both cases, paste-like mastic is used in buckets, which is applied by hand. For automated application, it is no longer mastics that are used, but emulsions. These are the materials under trademarks Rapidflex and TECHNOPROC, for the application of which special waterproofing equipment is used.

How to properly make bitumen foundation waterproofing with your own hands

Bitumen are tar-like products, which are a mixture of hydrocarbons and their nitrogenous, oxygenous, sulfurous and metal-containing derivatives. Already several thousand years ago, ancient people noticed that bitumens are insoluble in water, and this makes them good materials for waterproofing. Ancient Egyptians, Babylonians and Indians South America used natural bitumen for waterproofing structures for various purposes, including foundations.

But today the reserves of natural bitumen are mostly exhausted. However, humanity has long learned to produce artificial bitumen. These are residual products of oil refining, coal and shale. The composition of artificial bitumen is very similar to natural bitumen and they are widely used in the production of waterproofing materials.

Let's try to figure out, in relation to waterproofing the foundation with our own hands, what is the difference if bitumen or bitumen mastics Elastopaz and & Elastomix are used.

Bitumen - hard material, so it must be liquefied so that it becomes plastic and fluid. And then it can be used for waterproofing building structures. Traditional way involves heating bitumen with the addition of solvents.

Everything is much simpler and more convenient, faster and absolutely safer if you use not ordinary bitumen for waterproofing the foundation, but cold-applied water-based bitumen-polymer mastic. Waterproofing the foundation with bitumen mastic Elastomix or Elastopaz does not require heating or special skill or experience.

All you need to do is open the bucket, mix and apply with a spatula or roller or brush to the surface. This is elastic foundation waterproofing with mastic bitumen for cold use.

Another huge advantage of these materials is that they are environmentally friendly and do not contain solvents.

Instead of waterproofing the foundation with bitumen, Technoprok offers modern water-based bitumen mastics. The mastic coating is more elastic and durable than the bitumen itself. Accordingly, no evaporation of solvent vapors, no odors.

Thus, bitumen waterproofing of the foundation with liquid rubber mastic Elastopaz or Elastomix is ​​environmentally friendly and fireproof, elastic and with excellent adhesion, durable and seamless. All this guarantees reliable waterproofing for many years.

Therefore, if you decide to use bitumen for waterproofing the foundation, then it will be correct, convenient, safe, environmentally friendly, reliable and durable to use not just bitumen (or cheap solvent-based bitumen mastic), but to waterproof the foundation with bitumen polymer cold water-based liquid rubber mastic Elastopaz.

Technoprok offers not just bitumen mastic for DIY foundation waterproofing, A liquid rubber, i.e. cold water-based bitumen paste modified with polymers. Unlike conventional bitumen, Elastopaz and Elastomik, when dry, form an elastic, waterproof coating on concrete surface foundation.

Besides mastics for foundation waterproofing, we also offer profiled membranes. This is a film that simultaneously protects the waterproofing coating from damage and ensures drainage of the foundation.

Buy bitumen mastics for foundation waterproofing and others Construction Materials and equipment from the Technoprok company’s range can be purchased either directly by contacting the Moscow office or from Technoprok dealers and partners in Russia.

If you want to waterproof the foundation with your own hands 100% reliably, then there is a reason to learn more about liquid rubber from the Technoprok company. You will like our “bitumen”!

Waterproofing the foundation with bitumen or mastic, bitumen or liquid rubber

Consultations with Technoprok company specialists will help you figure out Is foundation waterproofing necessary? for a specific object and what it should be. We'll explain how to do it right reliable waterproofing foundation.

We will tell you what will be more profitable and rational: buy materials from us and do the waterproofing of the foundation yourself, or we can hire a contractor. In many cities of the country, the Technoprok company has authorized partners specializing in waterproofing foundations with bitumen mastic or bitumen emulsion.

In 2004, Tekhnoprok LLC was the first and only company supplying liquid rubber to Russian Federation, then still from Canada.

Since then we have mastered own production liquid rubber in Russia, and since 2008 began supplying bitumen mastic and emulsion from Israel to Russia.

By 2015, she had accumulated a significant amount of knowledge and skills regarding waterproofing with liquid rubber. We sell environmentally pure materials and provide technical support to our clients.

We will help and teach you how to properly use liquid rubber for do-it-yourself bitumen waterproofing of foundations and other building structures. Thousands professional builders and ordinary consumers throughout Russia have appreciated the quality of Technoprok products and know that on the website you can learn a lot about waterproofing with liquid rubber.

Their structures are treated with bitumen. Although this material is pure form there are certain disadvantages - the material is quite difficult to apply, and under the influence of external temperature changes its protective film may crack. Modern bitumen mastics contain substances that increase the hardness and durability of the waterproofing external coating.

Below we will consider in more detail the technical and operational properties of bitumen, as well as what technology must be followed when applying this material to the surface.

• mastic "Gidroizol";
• bitumen roofing mastic Technomast (21);
• waterproofing mastic (24);
• water-based mastic (33);
• hot mastic “Eureka” (41);
• bitumen-rubber mastic (20);
• TechnoNIKOL (31);
• aluminum mastic (57);
• hot mastic "Izhora";
• bitumen-polymer cold mastic “Slavyanka”.

Also in good demand are mastics from companies such as Remmers Elastoplast and Bitumast.

Calculation of bitumen mastic consumption

This indicator is usually indicated on the packaging. If the consumption is not indicated, then you can easily calculate it yourself based on the following recommendations:

1. The consumption of mastic will directly depend on the percentage of volatile solvents. This figure ranges from 25 to 70%. With a higher rate, the consumption of bitumen mastic will be several times less than with a lower rate.
2. When calculating mastic consumption, you should take into account the consumption rates for various jobs.
3. When applying mastic to vertical surfaces it is applied in several layers. Moreover, the second layer is applied only after the first layer has completely dried.

Having considered the classification, we can say that there are two main methods of applying mastic: hot and cold. And cold bitumen mastic is applied manually and mechanically. Below we will consider in more detail the methods of applying mastic:

1. At manual method use large paint brushes with short, stiff bristles. Usually these are flute brushes. You can also use a short-haired seaming roller. When processing horizontal surfaces, the emulsion is carefully leveled with a squeegee, and then rubbed with a roller or brush.
must be carried out in dry, clear weather, at a temperature not lower than -5°C.
2. All vertical surfaces must be treated in several layers.
3. Bitumen mastic is stored in a closed container, away from open flame sources.
4. Apply mastic from bottom to top in parallel strips of equal thickness.
5. To mix the mastic efficiently, use a drill with a special mixer attachment.
6. The bitumen primer is applied with a regular paint brush.
7. Upon completion of all work, wash all tools and brushes with white spirit or solvent.