Do I need to treat the foundation with bituminous mastic. Bituminous foundation waterproofing. Requirements for mastics

- This is a homogeneous plastic substance made on the basis of bitumen and various additives that improve its properties. It has excellent physical and chemical characteristics, which make it an ideal waterproofing and adhesive material. After being applied to the surface, the mastic quickly hardens.

Bituminous mastics are used in any field of construction, covering most surfaces with them, including their use:

for the roof

With bituminous mastic for roofing, you can quickly and efficiently seal the surface, without the use of equipment. Mastic can be applied to any cleaned and even roof surface.

Brief instruction-reminder:

• Bituminous mastic is applied with a hard brush or brush in a thin layer. On a small damaged surface, it is better to apply with a spatula.
• When repairing soft roof the place of swelling is cut crosswise, the interior is cleaned and dried and then carefully treated with mastic.
• Mastic patches are sprinkled with sand to protect them from overheating.
• Cracked roofing material after cleaning is covered with hot mastic, when working with which you must be as careful as possible. Coating waterproofing is the simplest, most reliable and economical type of repair work.

Roofing with bituminous mastic:

Roofs treated with mastic have a long service life. If she still needs repairs, it will be very easy to repair the roof.

To repair the roof with bituminous mastic, the following work is carried out:

• Eliminate coating defects.
• Cut the bubbles present on the coating by making cuts in the form of a cross and dry them.
• The surfaces inside the incision are smeared with mastic.
• The edges of the incision are connected, aligned and fixed.
• A layer of mastic is applied to the cuts, fiberglass is laid in the form of a strip 10 cm wide and the mastic is reapplied.
• Large cracks and gaps are treated similarly.

For roofing material

Mastic for roofing material is one of the most reliable methods of its fastening. Mastic helps to securely fasten the roofing felt to the roof, remove air pockets. The surface of the roof is smooth and perfectly withstands loads. Suitable for hot and cold mastic.

For waterproofing

To protect structures in the ground from moisture, waterproofing mastic is used. She waterproofs bathrooms, pipelines, arranges seamless waterproofing coatings in basements, wells and pools.

Buildings treated with bituminous mastic for waterproofing acquire protection from fire.

For foundation

For all types of waterproofing, one cannot do without mastic made from petroleum bitumen, to which organic and mineral solvents and fillers are added.

This mastic is the best waterproofing material due to the following properties:

1. elasticity;
2. frost resistance;
3. good adhesion;
4. resistance to ultraviolet radiation;
5. ease of application.

The foundation is treated in several layers with bituminous mastic from all sides, making it completely hydrolyzed. The cheapest coating is with hot bitumen, but it is more difficult to work with it. To avoid difficulties, it is better to choose a cold bituminous mastic with organic solvents (polymer). To work with it, you only need brushes and a spatula.

To process the inside of the foundation, water-based mastic is used. It has a neutral smell and dries quickly. In industrial construction, bitumen-latex emulsions are applied mechanically.

Waterproofing the foundation with mastic is carried out using brushes, rollers, any tools that can be used to apply the composition to the surface. The mastic is applied in two layers, maintaining a technological pause between them. Its value depends on the characteristics of the composition.

On the video - how to properly waterproof the foundation with bituminous mastic:

For floor

For floor protection devices, modern bituminous mastic is often used. It is non-toxic and dries quickly. Bitumen mastic for the floor does not emit unpleasant odors. Most often it is used for waterproofing the bathroom.

For parquet

For fixing parquet floors on concrete or cement-sand screeds, cold mastics are used:

1. bitumen-cookersalt;
2. bitumen,
3. rubber-bitumen;
4. coumaron-cookersalt.

The use of cold mastics is due to the fact that their setting is slow, which allows you to accurately connect the strips into a ridge and groove. On bituminous mastic, you can lay parquet with an oblique edge.

For wood

Bituminous mastic MBU is used for wood processing. Processing is especially important wooden surfaces that are buried in the ground. If the mastic is very thick, it is heated with the lid open and thoroughly mixed after that.

For linoleum

Each type of linoleum is put on "its" mastic:

• Bituminous for a fabric basis.
• Dispersion - for a heat-insulating substrate.
• Mastics with the addition of synthetic resins and rubbers are suitable for baseless linoleum.
• Before laying linoleum on mastic, the floor is pre-primed. Mastic is applied to the floor with a notched trowel.

Gluing linoleum to mastic

For laminate

When laying laminate on bituminous mastic, the floor is warm, sound and moisture insulated. Equip it in the same way as when laying parquet.

For metal

For metal and automobiles, bitumen-polymer and rubber-bitumen mastics are most suitable. It perfectly protects the car, but before processing, the metal must be cleaned of dirt and rust, washed and dried.

For concrete

Although concrete is a monolithic product with increased strength, it always has microcracks and small pores through which water easily seeps through. Because of this, the reinforcement may rust over time, the foundation block may burst and sink into the ground. Therefore, concrete structures are treated with bituminous mastic, which reliably protects all cracks, pores and interpanel seams.

To do this, use various mastics made from:

1. solid bitumen;
2. liquefied;
3. waterproofing bitumen-rubber.

For expansion joints

Commercially available hot bituminous or cold mastics can be used to seal joints in concrete pavements. They withstand more than 200 defrosting and freezing cycles.

Bituminous mastic for bridge expansion joints:

For asphalt

For asphalt repair and sealing roadbed apply special mastics. They withstand strong compression and stretching, have good adhesion, and can be used at low temperatures. Already an hour after the work, the road surface can be exploited.

For ovens

To perform work on facing fireplaces and stoves, heat-resistant bitumen-polymer mastic is used. It withstands temperatures up to +1200 °C and above. It dries quickly, does not emit odor, and prevents the development of fungi and mold. It is a heat-resistant, reliable, durable, bactericidal adhesive material.

For the pool

To seal the pool, thiokols and rubber-bitumen mastics are most often used. Mastics harden right in the seam and eventually turn into an elastic black sealant. To fill the seams use a pneumatic syringe with replaceable cartridges.

Application of special mastic on the bottom and walls of the pool

For Styrofoam

Recently, bituminous mastic began to securely attach polystyrene sheets to metal, concrete, expanded clay, brick and wood. During work, vertical sheets of expanded polystyrene are fixed with temporary supports for a reliable connection, and a load is placed on the horizontal sheets.

How to work with mastic

To create an effective waterproof layer, the bituminous mastic is vigorously mixed using a drill or mixer.

For ease of application and increase plasticity, you can heat it. Since the layer is elastic, it is better not to apply hot mastic on surfaces that are often subjected to strong mechanical stress. A hot solution penetrates into the pores better, as it has an increased fluidity and, therefore, adheres more strongly to the material being processed.

The preparation of hot mastic must be carried out, observing safety precautions. more beneficial for large scale projects. cold mastic Sold ready for use, it is safe to use and more convenient. But it costs more than hot.

They work with bituminous mastic at air temperature from -10° to +50°C. The mastic itself should be heated in a water bath to +15 degrees and above.

When working with mastic, you need to be aware of its fire hazard and toxicity. It is forbidden to warm it up on an open fire, as well as store it near a source of fire. If work is carried out indoors, it is necessary to create ventilation.

Preparation of hot bituminous mastic:

Consumption and consumption rate

Consumption of bituminous mastic per 1m? depends on its type. The consumption indicator depends on the type of material. Hot bituminous mastics do not decrease in thickness after hardening, therefore they are considered non-shrinking. To apply bituminous mastic in one layer with a thickness of 0.2 cm, it is required from 2.0 to 2.4 kg / m2.

An important characteristic of mastic consumption is the indicator of dry residue content. This is its amount that remains on the treated surface after it has dried and hardened. With a small dry residue, the consumption of the original mastic increases in order to form a film of a given thickness.

In the dry residue, to create a layer 2 mm thick, 3.4-3.8 kg / m? bituminous mastic. Most ready-to-use mastics have a solids content of 20 to 70 percent.

Applying mastic

In order for the mastic to adhere well to the treated surface, it is necessary to carefully clean the treated area from all types of contaminants. After that, the finished surface is thoroughly dried and heated. Thanks to this approach, the mastic will be applied evenly and you can save on its consumption.

The most popular tool for applying it is a brush or roller. They apply mastic and apply it like ordinary paint, without rubbing strongly into the surface. After drying, re-processing is done.

Bituminous-latex compounds can be applied by machine airless spray. With this method, a uniform layer is obtained, and material consumption is low.

You can also apply the mastic using bulk application, for this it is poured onto the surface and leveled with scrapers, mops or long-handled rollers. Although with this method, productivity is higher, more material is consumed.

What can dilute the mastic

Bituminous mastic is diluted with white spirit, solvent, toluene or kerosene until the required consistency is formed. After that, it is thoroughly stirred.

A few more words about the basics of using bituminous mastics:

The construction of buildings, structures for various purposes and degrees of complexity always involves the implementation of waterproofing works to protect against the effects of groundwater. Materials for these purposes are special mastics or impregnations that ensure the watertightness of structures.

At the stage of the zero cycle, before driving metal piles, they are treated with anti-corrosion treatment. The use of bituminous mastic for the foundation is the most common method of waterproofing. The laying of sewer pipelines is often made of cast iron pipes with a protective layer of bitumen applied at the factory. It is indispensable for the installation of rolled roofing, underlying floor layers in wet areas of apartments and artificial reservoirs, when sticking heat-insulating plates on vertical surfaces.

Types and properties

There are many varieties of mastics on the building materials market, differing in preparation methods, application methods, and the properties of the additives used.

The use of bituminous mastic of cold application has a number of advantages: it does not require heating, it is more convenient to apply, resistant to ultraviolet radiation, and the choice of color. After applying such a material to the surface, the solvent included in the composition evaporates, the coating layer hardens and provides the required functional qualities. Hot-applied mastics require pre-heating before application, they are more flexible and allow work at low temperatures.

One-component mastics - such a composition is used without prior preparation; it hardens quickly, so an opened package should only be used at one time. Two-component products must be mixed with thickeners or solvents before use. Their shelf life is longer.

In the manufacture of mastics, various components are added to the base material - bitumen, obtained in the process of oil refining, to impart certain properties. These are modified latex, synthetic rubber, various fillers of mineral origin in a dusty state, fine-grained rubber. They provide good adhesion, elasticity, resistance to mechanical stress and temperature extremes.

Technology

Application of bituminous mastic by coating is carried out on previously prepared surfaces. They are cleaned of dust, dirt, sagging. Joints, cracks and chips of foundation structures are carefully sealed with cement-sand mortar. If necessary, primers are applied. After it has completely dried, the first layer is applied. waterproofing material in horizontal directions.

At manual way for applying bituminous mastic, ordinary paint brushes, rollers and brushes with a short pile are used. mechanized way possible with a special atomizer that provides sufficient pressure for viscous liquids.

The thickness of the protective layer can be from 3 millimeters to several centimeters. Vertical surfaces are processed in two layers. The next layer is applied after the previous one has dried with continuous vertical stripes without breaks.

The use of our own production of bituminous mastic for foundations will reduce material costs and obtain material of the required quality. For this, heating equipment or a simple brick hearth is needed at the construction site.

Bituminous briquettes are crushed and heated in a metal container to a liquid state. The liquids contained in it are evaporated during boiling and constant stirring, the resulting foam must be removed. When foam ceases to form on the surface, heating stops. The mastic of the required consistency is directly obtained by mixing in certain proportions the bitumen obtained during cooking and solvents - gasoline or kerosene. In this case, liquid bitumen is added in small portions to a container with a solvent and vigorously stirred until a homogeneous state. As a thickener, ordinary cement can be added in small doses.

During the manufacture of bituminous mastic with your own hands, strict adherence to the rules for the safe handling of fire and combustible substances is required. It is necessary to use personal protective equipment - shoes, glasses, gloves, a protective suit.

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When the foundation of any structure is erected, care must be taken to protect it from the influence of soil and atmospheric moisture, which can eventually destroy even the most reliable building materials. Therefore, from the choice protective composition depends on the long-term operation and strength of the entire building.

The most common and affordable protective agent is bituminous mastic for. This material, like all other types of waterproofing, has its own physical, technical and operational characteristics, application features, own virtues and disadvantages that must be kept in mind when choosing it for subsequent work.

"Pros" and "cons" of bituminous mastic

It should be immediately noted that the advantages of this material are much greater than the negative qualities. Of the "pluses" of such waterproofing, the following can be distinguished:

• Due to the high elasticity of bituminous mastic, excellent adhesion is provided between it and the surface of the foundation walls, and in this regard, the material reliably protects the building structure from moisture penetration and erosion caused by it.

• In addition, elasticity keeps the waterproofing layer intact during shrinkage of the structure and cracking of the material during a long service life.
• Bituminous mastic prevents the occurrence and development of corrosion processes of the metal elements of the foundation, which also significantly extends the life of the building.
• The composition protects the material of the foundation walls from the appearance of mold and other colonies of unwanted microflora.
• Mastic penetrates well into the pores of the wall material and fills its cracks.
• The ease of applying this composition to the walls allows you to do this work yourself, since the waterproofing process does not require special skills. The main thing is to make sure that even very small areas that are not covered by processing remain on the surface in the course of the work.
• The advantage of mastic over other waterproofing materials can also be called the speed of coating.
• Bituminous mastic can also be used as an adhesive for mounting rolled waterproofing material.
• At correct selection of this material, it is possible to work with it at almost any temperature.
• All bituminous mastics have affordable price, so you do not have to find large sums for their acquisition. In addition, the mastic is consumed quite sparingly, and it will not take too much.

Among the shortcomings of this waterproofing material, one can single out the duration of polymerization of the composition applied to the surface, which makes it necessary to transfer subsequent operations until the waterproofing layer has completely solidified. However, this factor can hardly even be called a disadvantage, since having provided for it, you can plan in advance the time for performing insulation and finishing at a later date.

Another possible “minus” is that some low-quality mastics can dry out and crack over time. Therefore, it is very important to choose the right material, guided by not only price criteria.

Varieties of waterproofing mastics

The main types of bituminous mastics

Bituminous mastics are divided according to various criteria, therefore, when choosing this material for waterproofing the foundation, it is necessary to carefully study the attached instructions, which contain information about its composition and application technology.

1. Mastics on a bitumen basis are divided according to the features of the technology of their application to the surface. There are two main varieties of this process - "cold" and "hot" application.

• On sale you can find many brands of "hot" bituminous mastics, but they are united precisely by the fact that before applying to the wall they must be warmed up, brought to a certain temperature. "Hot" mastics can differ in heat resistance, that is, in the maximum temperature to which they need to be heated to reach the desired state in order to be used as an adhesive for rolled material, or as an independent coating waterproofing. It should be noted that the manufacturers of this material are not recommended to mix mastics with different characteristics.

The so-called "hot" mastics are used mainly by professional builders, since it is necessary to adhere to a certain process technology and, in order to avoid serious injuries, strict adherence to safety regulations. If there is no experience with such compositions, then it is better to contact specialists or use the “cold” version of the coating material to create a waterproofing layer.

Goodhim bituminous mastic prices

Mastic bituminous Goodhim

You can also notice that this type of waterproofing is most often used when the building is being built in regions with harsh winter conditions.

• Cold bituminous waterproofing compounds are also produced in various options, but all of them are applied to the walls without much preliminary preparation of the mastic, except, perhaps, for its thorough mixing. However, for work in the cold season, at low temperatures, some variants of such mastics still require a certain amount of heating. In addition, it must be taken into account that only high-quality, preferably bitumen-polymer compounds produced by trusted companies are suitable for working in such conditions.

2. Bituminous mastics are produced both on the basis of organic solvents and water-soluble, depending on what components are included in their composition. In this regard, it is possible to dilute them to a more liquid consistency only with those liquids on which they were initially mixed.

3. Waterproofing mastics are one-component and two-component.

• The first option is ready for use, that is, it is enough to open the package, then mix the mixture well - and it can be applied to the wall surface prepared for this.

• Two-component mastics consist of two components that are combined in certain proportions immediately before application. Such compounds quickly set and harden, so after mixing them, you need to work with them quickly enough. Two-component mixtures have not only a longer shelf life in the closed state, but also high durability in operation. This option is convenient when work needs to be done quickly. But, I must say that, due to the high cost and complexity of use, such formulations have not won wide distribution.

4. Mastics are also divided according to the state of their hardening, since, after application, they can harden completely or remain in a semi-solid state.

5. Finally, bituminous mastics are also subdivided according to their constituent components. Today on sale you can find the following options for waterproofing compounds based on bitumen:

• Bitumen-mineral mastic includes substances such as chalk, cement, dolomite, asbestos, quartz or limestone, crushed to a fine powder - these substances make up to 20% of total mass mixtures. In addition to minerals, this mastic necessarily includes a plasticizer - according to the production technology, it must be at least 5%. In cold mastics, an oil solvent or lakoil is used as a plasticizer - this is a waterproofing composition that does not harden in air, which can withstand any mechanical, vibrational and hydraulic loads without damage. In this regard, such mastic is used to protect the recessed parts of the foundation walls.
• bituminous rubber the composition, in addition to oil bitumen, contains fine rubber powder or synthetic rubber, which make the mastic more elastic. In addition, mineral fillers are included in the mastic, as well as special mineral oil as a plasticizer. Such compositions are made on the basis of an organic solvent.

This type of mastic can also be sold in powder form, and its consumption, depending on the thickness of the coating, is 1.5 ÷ 2 kg / m². The dry mixture is heated to the temperature indicated on the package before application. To do this, it is poured into a container and put on fire. This type of mastic can be called one of the most affordable, and the service life of waterproofing is 15÷20 years.

• bituminous rubber the mixture has a good viscosity, due to which the material forms a dense, elastic and reliable protective coating against moisture. This version of the mastic, like the previous one, is diluted with a solvent if necessary. The drying time of each of the layers of this coating is from 6 to 12 hours. Material consumption depends on many factors, which can include the porosity of the base material, the thickness of the applied layer, humidity and ambient temperature parameters. In general, the consumption can vary from 0.75 to 1.5 liters per square meter. For better adhesion to the substrate and the formation of a high-quality film coating, concrete wall Moisturizing is recommended. Priming with a primer for rubber mastic is not required.
• Bitumen-polymer water-based mastic includes one or more modified polymers. It does not contain organic solvents, therefore it does not have strong odors and can be used not only for outdoor, but also for internal works. Compounds containing polymers are not only an excellent waterproofing for building structures, but also become an excellent protection for walls and interior spaces from the penetration of radon harmful to human health from the soil. The drying time of this mastic on the walls is 6÷8 hours.
• bituminous latex mastic is made on a water emulsion. Latex is rubber synthesized in industrial environment and with improved performance. In most cases, this type of mastics is used in a cold state and is sold ready-made, that is, they are a one-component composition. It is advisable to prepare the wall surfaces before applying bitumen-latex mastic by treating them with a primer that can be made independently by diluting the same mastic composition with water in a 1:1 ratio. Latex mastics can be used even at low temperatures without heating.
• bituminous oil frost-resistant mastic is excellent for waterproofing external and internal recessed structures, the walls of which can be built from any materials. This mastic is diluted with gasoline, white spirit or solvent. The consumption of the oily waterproofing compound is 1÷1.5 l/m².
• bituminous primer differs from mastic in its more liquid consistency, as it is used to prepare surfaces for applying the main waterproofing layer of mastic. The primer can be made from mastic by diluting it with a solvent or water, depending on the base, to the desired consistency. This surface preparation composition is applied with a roller, brush or sprayed using a special spray gun. The drying time of such a composition on the walls, depending on the base, can be from 1 to 5 hours.

Requirements for mastics

In order for the waterproofing coating to be strong and durable, the composition of the bituminous mastic must be of high quality, and the date of its manufacture must correspond to the warranty periods declared by the manufacturer.

Therefore, when purchasing this material, it is imperative to study the label on the package, where all the necessary characteristics and information about the date of its production should be presented.

In addition to these criteria, it is necessary to take into account the following qualities of mastic:

• The waterproofing mixture must have a uniform consistency without foreign inclusions, which can create air bubbles in the applied layer, which weaken the waterproof properties of the material.
• The mastic should be flexible and easy to apply.
• The mixture during application and during operation should not release substances harmful to humans into the environment, which means that it should not contain toxic components.
• The bituminous waterproofing composition used for waterproofing the foundation must have a heat resistance of at least 70 degrees.
• Complete water resistance is one of the main qualities for any bituminous mastics.
• High adhesion of the mixture is necessary not only for good adhesion to the base, but also for reliable bonding of waterproofing rolled sheets.
• The hardened waterproofing layer must have constant physical and mechanical characteristics that remain throughout the entire operational period, in the operating temperature range indicated on the packaging by the manufacturer.

The main technological methods of applying waterproofing mastic on the walls of the foundation

The process of creating a waterproofing protective layer on the walls of the foundation is simple, but it will take a lot of time if you work manually, that is, with a brush, roller or spatula, especially in cases where the structure goes deep into the ground, which means it has a large height and total area .

Illustration	Brief description of the operation to be performed
	Starting work on the waterproofing of the foundation, it is necessary to revise it for the formation of cracks. If such flaws are found, they must be repaired, and if necessary, tightened with metal ties, consisting of reinforcing brackets with a diameter of 10-12 mm or strips 3 ÷ 5 mm thick. If cracks are left on the base, then it is useless to waterproof it with a coating, since moisture will penetrate deep into the wall through these gaps, continuing to destroy the concrete.
	You need to start the repair by expanding the cracks and deepening them as far as possible. If the crack is small, then it must first be filled with a deep penetration primer, dried, and then filled with a sealant for outdoor use. If the gap is large, then tightening elements are fixed on the wall, and then, after treatment with a primer, the crack is filled to the full depth and width with concrete or concrete-adhesive mortar. If the foundation is made of brick, then it is recommended to reinforce the entire surface metal mesh, then plaster, and only after that proceed to waterproofing work.
	Further, before applying the waterproofing material, the cleaned walls are primed with a bituminous primer, consisting of bituminous mastic and a solvent. This composition can be purchased ready-made or made independently by mixing the two components in a 1: 1 ratio.
	The primer layer is necessary, first of all, in order to create good foundation for applying the main waterproofing material. The primer will strengthen the surface by binding the remaining dust on the wall surface. It will fill the pores and small cracks, eliminating the excessive absorption of the structure of the foundation material - this will reduce the consumption of bituminous mastic and create a smooth waterproof surface for its application.
	Since the primer has a liquid consistency, it is convenient to apply it with a soft brush or brush, mounted on a long handle for the comfort of work. The primer is applied to the surface evenly, and when it is completely treated with a preparatory composition, you need to give time for the primer to dry. This process will take from 3 to 12 hours, depending on the composition of the solution and the characteristics of the base.
	After the primer-primer dries, a waterproofing coating is applied with one of the selected mastic compositions. It can be applied in one or more layers. Waterproofing applied in four layers, between which fiberglass is laid, is called heavy, and it will not only protect the walls from any moisture, but will also become a kind of additional reinforcement for their surfaces.
	Bituminous waterproofing mastic often has a fairly thick consistency, so it is often applied with a wide spatula or trowel. The mass must be evenly distributed over the wall, creating an even layer. If it is planned to apply several layers, then each of them, before moving on to the next, must be well dried. The drying time of the mastic must be indicated on the packaging of the material.
	Another option for using bituminous mastic for waterproofing the foundation is to stick roofing sheets on it. In this case, one layer of mastic is applied to the primed walls, which is usually heated before applying the canvases to it for better adhesion of the materials to each other.
	Next, before proceeding further construction works waterproofed and dried foundation walls must be covered with thermal insulation material. It will fulfill both its immediate purpose and, at this stage of work, will become a good protection for the waterproofing coating from damage.

If there is a need to carry out such work in winter period, then for waterproofing a mixture is used that can withstand application to the surface at an ambient temperature of up to -30 degrees, for example, bitumen-nairite mastic. In order to work successfully during this difficult period, it is recommended to fulfill some requirements:

• When using bituminous mastic as the main waterproofing material, that is, without the use of roll materials, the surface of the treated wall must be heated to positive temperature. For this, they are usually used heat guns, although heating with a gas burner can also be applied.
• The mastic itself should be prepared in warm rooms located at a short distance from the place of its application.
• It is impossible to arrange the waterproofing coating of the foundation in high humidity, fog, rain or snowfall.
• If it is absolutely necessary to carry out these works in the cold season, it is recommended to arrange special structures - greenhouses, which will help to achieve a positive temperature of the foundation walls.

The teplyak is a structure erected at the place of work made of timber or metal, which is tightened with a dense plastic film. Inside this facility for air heating, heaters are switched on without open fire, in order to avoid creating dangerous conditions for the health and life of builders.

• When mixing mastic in equipped greenhouses, electrically heated mixers are used to heat the mixtures.
• Due to unfavorable winter conditions for work, the application of all layers of waterproofing is carried out by the so-called grips, that is, the process of applying all layers is completely carried out on one section of the foundation. Then, the greenhouse is moved to the adjacent section of the building, and the work is completely carried out on it - and so on, until the entire task is completed.
• The results of all work carried out in the winter period must be checked with the onset of the warm season, for the manifestation of certain defects that should be immediately eliminated.

The very process of creating a waterproofing barrier in this publication is considered briefly, but only for the reason that a separate detailed article is devoted to this issue on our portal.

Foundation waterproofing is important!

A big mistake is made by those builders who, after pouring the foundation, lose sight of the problem of creating protection for it from the effects of ground moisture. What is needed for, what requirements it must meet, and how it can be carried out on its own - read in a special publication on the pages of our portal.

Popular brands of bituminous mastics

A fairly wide range of waterproofing bituminous mastics from different manufacturers is presented on the Russian construction market, but still some of them are extremely popular.

Products of the company "Technonikol"

Mastics "TechnoNIKOL" are today, perhaps, the most popular consumers involved in private construction. These compounds are made from high quality products at the very modern equipment and meet all international quality standards.

Prices for TechnoNIKOL bituminous mastic

TechnoNIKOL bituminous mastic

Bituminous waterproofing mastics are made on the basis of solvents and water emulsions, for hot and cold application, as well as for application using special equipment and by hand.

This table lists the physical and technical characteristics of the compositions of the TechnoNIKOL brand:

Physical and technical indicators of bituminous mastics "TechnoNIKOL"	№20	№21	№24	№31	№33	№41
Adhesion strength with the base, MPa:
- with concrete	0.6	0.1	0.45	0.6	0.2	0.6
- with metal	0.9	0.1	-	-	0.25	0.9
Flexibility on a bar with a radius of 5.0 ± 0.2 mm 0С	-15	-35	-5	-15	-25	-
Elongation at break, %	100	500	-	700	900	1100
Moisture absorption during the day,% by weight	2	0.4	0.4	1	0.4	1
Water resistance during the day at a pressure of 0.1 MPa	+	+	+	+	+	+
Mass fraction of non-volatile substances, %	73÷93	50	65	50÷70	53÷65	100
Thickness of one layer, mm	1.5	1	1	1	2	2
Consumption per layer, kg/m²	2.5÷5.7	2.5÷5.7	2.5÷5.7	2.5÷5.7	3.5÷5.5	2.5÷5.7
Drying time of one layer, h, at +20°C and 50% humidity.	24	24	24	5	5	4
Temperature range of application, °C	-20 to +30	-20 to +40	from +5 to +30	from +5 to +30	-20 to +40	-20 to +40
Humidity of the base by weight, no more than, %	4	4	8	8	4	4

More detailed information about TechnoNIKOL mastics is presented in the table below:

Illustration
	Bitumen "AquaMast" is produced by Technonikol for use in various areas indoors and for outdoor construction work. The packaging indicates the purpose of a particular composition - it can be waterproofing the foundation, pools and floors in bathrooms, roofing works and other operations. AquaMast mastics contain oil binder bituminous substance, mineral fillers, industrial oils and solvent. Waterproofing bituminous mass for the treatment of foundations is a ready-to-use composition used for application to structures built of concrete, metal, reinforced concrete, wood, brick, buried in the ground and in direct contact with moisture.
	To create good adhesion between the waterproofing layer and the foundation material, the manufacturer recommends impregnating the surfaces with the AquaMast bituminous primer before applying it, and this is especially true if the porous construction material. Moreover, following this advice, you can significantly save on mastic and facilitate its application. The drying time of one layer of mastic is from one hour to one day, depending on some factors, which include the material for building the foundation, the temperature and humidity of the environment, as well as the thickness of the applied layer. The mastic is considered dry if its surface is no longer sticky. So that during further construction work, the waterproofing layer is not damaged, immediately after it dries, it should be covered with protective boards or heat-insulating mats. This mastic is packaged by the manufacturer in metal buckets of 3, 10 and 18 kilograms. The mastic consumption is 1 kg/m².
	"TechnoNIKOL No. 20" is a bitumen-rubber mastic, ready for use. The waterproofing material consists of several components - modified crushed rubber, petroleum bitumen, mineral fillers, processing aids and an organic solvent. After final drying, this mastic creates a coating of high strength, capable of operation in a wide range of operating temperatures, in different areas, ranging from the application of protective layers to roofing material and ending with waterproofing of various building structures, including foundations.
	The consumption of "TechnoNIKOL No. 20" for the roof varies from 3.8 to 5.7 kg / m², and for waterproofing the foundation from 2.5 to 3.5 kg / m². It is possible to carry out work on applying this composition at temperatures from -20 to +40 degrees, the drying time of the waterproofing layer is 24 hours at temperatures above +5 degrees. It is impossible to carry out work close to sources of open fire, contact with the mass on the skin and mucous membranes should be avoided. Storage of bitumen-rubber mastics should be carried out at a temperature of -20 to +30 degrees, in a place protected from light. The shelf life from the date of production is 18 months. Sold mastic "TechnoNIKOL No. 20" in metal buckets of 20 liters.
	"TechnoNIKOL No. 21" ("Technomast") - this mastic is designated as roofing, but is successfully used not only for repairing any type of roofing in combination with rolled coatings, fiberglass and as an independent waterproofing, but also for protecting all building structures from moisture . Such areas include basements, piles, foundations of houses and other parts of buildings buried in the ground and in direct contact with water. In addition, this composition is suitable for anti-corrosion treatment of surfaces made of metal - these are car bodies, pipes and other components and structures. Technomast is a ready-to-use mastic consisting of modified artificial rubber, mineral fillers, processing aids, organic solvent and petroleum bitumen. Coating layers of this material have high elasticity, heat capacity, adhesion strength, resistance to moisture.
	You can work with Technomast mastic at an ambient temperature of -20 to +40 degrees. If the air is heated to a temperature below +5 degrees, then before applying the composition must be kept warm for at least a day. Under favorable conditions, the drying time of the mastic layer is no more than 24 hours. You can not work with this composition if there is an open fire nearby, and also when applying mastic, it is imperative to protect your eyes and open areas body. The solution is sold in metal buckets of 20, 10 and 3 liters. The consumption of mastic when used for roofing is 3.8 ÷ 5.7 kg/m², and for protection against moisture of foundations 2.5 ÷ 3.5 kg/m².
	"TechnoNIKOL No. 24" ("MGTN") - this waterproofing mastic is a mixture consisting of bitumen, mineral fillers, solvent and technological additives. This type of mastic does not contain polymers, therefore its elasticity is somewhat lower and there is no relative elongation, therefore the mastic belongs to rigid waterproofing coatings and is not suitable for working with metal. Mastic is designed specifically for the protective coating of wooden, concrete and reinforced concrete surfaces. Other data on this material are given in the table above.
	"TechnoNIKOL No. 31" is an aqueous emulsion of petroleum bitumen, technological additives, modified artificial rubber, and mineral fillers. The material has high adhesion to any surfaces, resistant to moisture, elastic and heat resistant. Since the composition is made on the basis of water, it does not contain mineral solvents. In this regard, such mastic can be used for indoor waterproofing works - balconies, bathrooms, pools, basements and others. However, the material is also used for the repair of roofing, as an independent waterproofing, and in combination with roll sheets or fiberglass.
	TechnoNIKOL No. 31 is also excellent for protective coating of foundation walls and other structures buried in the ground. This waterproofing mastic, ready for use, has some application features. The solution must be mixed well before starting work, and then applied to a dry or slightly damp surface cleaned of contaminants - the main thing is that it is not wet. Coating surfaces can be done with a spatula or a wide brush. An aqueous solution is applied at an air temperature of +5 to +30 degrees, and drying of one layer of waterproofing takes no more than 5 hours. The final coating will gain strength after seven days. The consumption of the composition "TechnoNIKOL No. 31" is 3.8 ÷ 5.7 kg / m² when waterproofing the roof, and 2.5 ÷ 3.5 kg / m² when applied to the foundation walls. The mastic goes on sale in metal buckets of 18, 9 and 2.7 kg.
	"TechnoNIKOL No. 33" is a bitumen-latex mastic made on the basis of an aqueous emulsion, which also includes modified polymers. The composition does not contain mineral solvents. This type of material is also suitable for waterproofing both foundations and roofs, as well as for indoor floor areas. Mastic does not require preparation before use and is suitable for manual and mechanical application. When deciding to use special equipment for surface treatment, spraying is possible only in conjunction with a 10÷12% solution of calcium chloride, which means 4 kg of crystalline substance per 25 liters of water, which is added to the mastic in proportions of 1:8. Mastic is sold in barrels of 200 liters, and its consumption is 4.5 ÷ 5.5 kg / m² for roofing, and 3.5 ÷ 4.5 kg / m² for waterproofing foundations.
	"TechnoNIKOL No. 41" - this "hot" waterproofing mastic is considered roofing, but it is quite possible to use it to seal potholes and cracks in concrete screeds and reinforced concrete slabs, coating foundations made of concrete, metal, various blocks, as well as to protect pipelines. This version of the mastic is made from modified polymers, mineral fillers and petroleum bitumen. When applied, it creates a durable one-piece coating, providing reliable waterproofing of the structure.
	Before starting work, "TechnoNIKOL No. 41" must be prepared. To do this, dry mastic is placed in a container and heated to 160 ÷ 180 degrees, after which it is applied to the surface primed with a bituminous primer with a brush. Application works are carried out at air temperatures from -20 to +40 degrees. This product is sold in paper bags with a siliconized inner layer inside. The net weight of the bag is 30 kg. The shelf life of the material from the date of manufacture is 18 months.
	Bitumen-polymer mastic MKTN is a composition used in a cold state. It consists of petroleum bitumen, modified artificial butadiene styrene thermoplastic elastomer or its modifications, solvent, filler and technological additives. Mastic is used for arranging and repairing roofs, as well as for waterproofing basement walls and foundations, as well as other building structures that are buried in the ground and are constantly exposed to moisture. The material has not only waterproofing qualities, but also anti-corrosion, so it is often used for protective treatment. metal structures and details not only in construction, but also in car repair. Mastic consumption is 3.8 ÷ 5.7 kg/m² for roofing, and 2.5 ÷ 3.5 kg/m² for foundation waterproofing. The material is designed for use in the temperature range from -200 to +300 degrees, and its drying time under normal conditions is no more than a day. The warranty period of mastic from the date of manufacture is 18 months. It goes on sale in metal buckets and barrels of 20 and 50 liters.

Bituminous mastics from other manufacturers

In addition to the well-known domestic brand TechnoNIKOL, other manufacturers also present their products on the Russian market, which include Oil Bitumen Plant, GidroLux, Icopal, DonIzol, Grida and others.

The characteristics of some of them will be presented in tables.

Physical and technical indicators of bituminous mastics	"MGH-G"	"MGH-K"	"MGH-T"	"Darkie"	"MEBIS"
Moisture absorption during the day, no more,% by weight	0.5	0.5	1	0.2	0.5
Conditional viscosity, not less than, seconds	21	15	15	20	14÷28
Adhesion strength with concrete, not less than, MPa	0.3	0.4	1.5÷3.0	0.15÷0.1	0.4
Softening temperature, ° С	70	130	100	80	100
Drying time of one layer, hours	24	12÷24	24	12÷24	12÷24
Depth of needle penetration at 25ºС, 0.1 mm	15:20	12÷20	15:20	15:20	12÷15
Mastic consumption, liter / m², with a layer thickness of 2 mm	1	0.8÷1.0	0.8÷1.0	2.5÷3.0	0.25÷0.5

And about the same compositions - a little more:

Illustration	Brief description of material features
	Mastic MGH-G "Grida" is a composition that is ready for use and does not require heating. The homogeneous mixture consists of petroleum bitumen, mineral filler and organic solvent. A similar composition is intended for external waterproofing of various building structures, including those buried in the ground, except for those that will be exposed to a thermal effect exceeding 70 degrees during operation. Work on applying this composition is carried out at an air temperature of at least +10 degrees, on a surface that has been previously cleaned and primed with a bituminous primer.
	MGH-G mastic is quite thick, and is often applied with a spatula. If it is planned to work with a brush or roller, then the mixture must be diluted with an organic solvent, the amount of which should not exceed 25 ÷ 50% of the mastic volume. As a solvent, you can use petroleum solvent, white spirit, turpentine, xylene and similar organic compounds. If the mastic for waterproofing is used without additional materials, such as roofing material, then it is recommended to apply 2 ÷ 3 layers of the composition to the foundation walls, allowing each of them to dry from 6 to 24 hours if the ambient temperature is at least +20 degrees. Complete drying of the coating occurs one day after the application of the last layer. If the work is carried out at low temperatures, then the drying time increases. Mastic goes on sale in metal buckets of 20 liters.
	MGH-K "Grida" is a bitumen-rubber composition, ready for use, which consists of crushed crumb rubber, petroleum bitumen, resin acids, synthetic thermoplastic polymer and organic solvents. The ingredients that make up the mastic in the complex give it elasticity, which is not lost at temperatures from - 35 to + 130 degrees. Waterproofing material is used for application to the roofing surface, foundations, and other parts of the outer parts of the building. Due to its balanced consistency, the mastic penetrates well and covers various surface defects, such as chips, cracks and crevices. If the damage is wide, then the mastic is used in combination with a reinforcing fiberglass mesh. The strength and adhesiveness of this type of mastic is so high that it is used even for patching pavement. Full list jobs that can be done with this waterproofing material can be found on the packaging label.
	If it is necessary to obtain a more liquid composition, the mastic can be diluted with one of the organic solvents. It must be remembered that the solvent can be added in a volume of no more than 25÷50% of the total mass. To protect the foundation walls from moisture, it is recommended to apply two to three layers of mastic on their surface, and each of them is best reinforced with fiberglass or fiberglass mesh. Each of the layers must be dried for at least 6 hours at a temperature not lower than 20 degrees. The final drying occurs within a day after applying the last layer of mastic. This mastic is sold in metal buckets with a volume of 2, 20, 50 liters.
	MGH-T "Grida" is a rubber-bitumen mastic, ready for application, consisting of petroleum bitumen, mineral fillers, fine rubber crumb, solvent and synthetic rubber. Mastic has excellent adhesive ability, therefore it creates a durable, waterproof, elastic coating on the surface of concrete and metal, which can be operated at temperatures from -40 to +100 degrees, that is, it is inert to temperature extremes. The material is suitable for waterproofing any surface, from roofing to basement or pool floors. The mastic is applied with a spatula, brush or roller, but in the latter applications it must be diluted. The application of this waterproofing composition is carried out according to the same principle as MGH-K "Grida". If you have to work at low temperatures, then the mastic needs to be slightly heated in a steam bath to a temperature of 30 ÷ 50 degrees. Mastic is packaged in containers of 2, 20 and 50 liters.
	"MEBIS" is a water-based bitumen-polymer mastic used cold for waterproofing works. It is used to protect the roof, as well as other building structures, including those buried in the ground. This waterproofing composition does not contain organic solvents, so it can be safely used not only for external, but also for internal work. Mastic is suitable for protecting not only concrete and metal, but also materials such as drywall, brick, wood and plaster. In addition, this mastic is an excellent primer for preparing surfaces for further waterproofing.
	If "MEBIS" is used in this capacity, then it is diluted with water, in proportions of 1: 1. To prepare the surfaces, it is enough to apply a primer on them with a layer of 1 mm. Waterproofing is applied to the prepared wall in two to three layers, between which fiberglass is laid. Drying of each layer will take 3÷4 hours, and the final drying occurs after 12÷48 hours, depending on the temperature and humidity of the environment. The operating temperature of the material varies from -35 to +100 degrees. Material consumption depends on the quality of surface preparation, its porosity, structure and hygroscopicity. Sold "MEBIS" in plastic buckets of 5, 20 and 50 kg.
	The plant "MPK KRZ" in Ryazan produces mastic "Smuglyanka". This waterproofing material consists of bitumen, fine rubber crumb, organic solvent and technological additives. The presence of rubber in the composition of the mastic makes it more elastic, increases the adhesive qualities of the material and its resistance to temperature extremes, ground and atmospheric moisture. Therefore, this type of material is suitable for waterproofing various areas of the building, including roofs, buried foundations, and pools. If necessary, the bituminous mixture can be diluted with such solvents as gasoline, nefras, solvent, white spirit and other similar ones. This process will have to be carried out if the work is supposed to be done with a brush or roller. The consumption of such a mastic when applied to the walls of the foundation with a layer of 2 mm will be 2.5 ÷ 3 kg / m². It goes on sale in a metal container with packing of 18 kg.

Video: bituminous mastic "Bitumast" - reliable waterproofing from the foundation to the roof

At the end of the topic, it must be emphasized once again that when choosing a material for waterproofing, it is worth giving preference to well-known proven manufacturers who comply with the established quality standards for the manufacture of their products. However, no matter what mastic is chosen to protect the foundation, the waterproofing coating will be truly reliable only if all technological requirements for applying the material to the surface are met.

Learn about the various new article on our portal.

Using bituminous mastic as a waterproofing material is a time-tested way to protect the underside of the foundation from water exposure. Bitumen is applied seamlessly and allows you to protect reinforced concrete, wood and other types of base from moisture, the consumption of waterproofing material is not large.

Advantages and disadvantages

As with any waterproofing material, the bituminous mixture has its advantages and disadvantages.

• Processing with bitumen makes it possible to make a seamless layer;
• The consumption of waterproofing material is negligible;
• Any type of base can be treated with bitumen;
• Processing is possible without assistants;
• Usually processing does not take much time;
• Bitumen has a long service life;
• Work can be carried out at any time of the year;
• The protective waterproofing layer is resistant to aggressive environments;
• Mastic can be bought at any major building market;
• The waterproofing layer does not swell from exposure to moisture and does not crack;
• Special components in the composition protect the base from mold and mildew.

The disadvantages of such waterproofing include the complexity of the work when processing a large base. Sometimes you have to wait until the waterproofing hardens.

As a result of processing the foundation with bituminous grout, you will receive:

• Increased building durability.
• foundation reliability.
• Excellent protection against penetration of mold and mildew.
• No high humidity in the rooms.

Mastic for the base: composition, types and features of work

Bituminous waterproofing- this is a homogeneous mass, consisting of modifiers, acetone (or other solvent) and a base. Components that protect the base from corrosion, mold and fungi can also be added to the composition. The main component of such waterproofing is bitumen - a viscous composition of natural origin.

There are several types of bituminous waterproofing:

• Bitumen-polymer waterproofing;
• Bitumen-emulsion waterproofing (used in preparatory processing, other types of mastic are applied on top of it);
• Construction bitumen (for work, bitumen is heated to 300 degrees. The consumption of such material is much higher.);
• Bitumen-rubber waterproofing (the mixture is applied heated).

Now bitumen-rubber (bitumen with the addition of crushed rubber) and bitumen-polymer mastics are especially popular. They have an increased service life (the service life is 25-30 years longer than that of conventional mastics).

Consumption of bituminous waterproofing

• For an accurate calculation required material you need to find out the area of ​​\u200b\u200bthe base, to know what material was used for its construction.
• The presence of chips, holes and microcracks increases consumption.
• If bitumen is used as link between base and roll waterproofing, then the consumption will be insignificant (1.5 kg per 1 sq. M.).
• If bituminous mastic is used as the main means of waterproofing, then the layer must be at least 3 mm (3.5 kg per 1 sq. M.).
• If you use hot mastic, then its consumption will be greater.
• On the mastic label, the manufacturer indicates the approximate consumption.

Stages of waterproofing with bituminous mastic

Stage 1

To carry out waterproofing work, you need to properly prepare the base. This will help reduce consumption, and increase the adhesion of the layer to the foundation surface.

If the surface to be treated has many holes, chips and cracks, it must be rubbed with a concrete solution (thoroughly mixed). If you do not prepare, the bituminous layer may burst and then additional application of mastic will be required, and this will significantly increase its consumption.

If the base to be processed has sharp scallops, then they must be removed with a grinder with a grinding nozzle. The sharp corners of the base should also be processed (cut and rounded).

The entire surface of the base must be free of cracks, recesses and protrusions, sharp corners must be rounded. With the help of simple preparatory work you can reduce material consumption by about one and a half times!

Having made the surface smooth, the base should be cleaned of dirt. Then dry the entire surface to be treated with a building hair dryer. This will protect the mastic from swelling and cracking.

A simple test can be performed to ensure that the substrate has dried sufficiently. Take a plastic film and put it on the foundation for a day. If the next day moisture does not appear on it, then you can start working, and if moisture appears on the film, then the foundation needs to be dried.

Stage 2

To reduce the consumption of bituminous mastic, and improve the adhesion of the material to the surface, primer treatment with a primer is required. The primer must be selected according to the mastic you have chosen.

The primer is applied evenly over the entire base and in one layer. A roller can be used to apply the primer with primer. After completing the application of the preparatory layer, it needs to dry (from two to five hours).

Layers of mastic should be continuous and without breaks. Bituminous waterproofing is applied with a roller or brush from the bottom up. Subsequent layers of waterproofing are applied after the previous ones have completely dried.

After finishing the application of the last layer, the surface should be sprinkled with soft turf. This will increase the life of the waterproofing.

• To reduce the consumption of waterproofing mastic, you need to carefully monitor the thickness of the layers. A thickness gauge can be used to accurately control the application.
• When applying bituminous waterproofing mastic in several approaches, each of the layers should not be more than 1.5 mm.
• For regions with high humidity and frequent rainfall great solution there will be waterproofing from polymer-bitumen mastic.
• The bituminous waterproofing layer can be applied using airless units.
• solidification different types mastics may take different times. If you doubt whether the mastic has dried, just touch it. If the finger sticks, then you should wait for some more time. On average, complete freezing takes five hours.
• On horizontal and vertical surfaces, the consumption of waterproofing material may vary.
• The purchase of bituminous mastic should be approached responsibly: buy material only from trusted suppliers and in large construction hypermarkets.

Bituminous mastic for foundation waterproofing updated: February 26, 2018 by: zoomfund

The foundation is a reliable and durable foundation of any structure. Concrete, being its main component, can simultaneously be a strong, strong and brittle material. It is water and humidity that affect the main indicators of concrete.

An important role is played by the use of mastic so that the foundation of the house is a really reliable, solid foundation. The treatment of the foundation with bituminous mastic waterproofs the concrete, thereby extending its service life, maintaining all technical characteristics.

Main advantages

The advantages of using this material make it an indispensable product when performing waterproofing of the base of the building.

The benefits of using it include:

• High adhesion with any kind of surface;
• Ability to create an elastic and seamless layer;
• Affordable cost;
• Ability to work in any weather;
• Uniformity and stability of the composition;
• Increased resistance to influence various conditions environment;
• Possession of antiseptic qualities.

The advantages of treating the foundation with bitumen mastic can also include its practicality, reliability, environmental friendliness, frost resistance, heat resistance, durability of the coating (up to 30 years), ease of application to any surface.

Results of use

The use of this technology for waterproofing the base guarantees a positive result.

Namely:

• Reliable protection against the influence of moisture of the entire structure of the building;
• Corrosion prevention;
• Extending the service life of all elements of the structure;
• Preservation of the functionality of building elements.

This type of waterproofing material is one of the oldest, but reliable methods of protection. These indicators serve as confirmation of the need to treat any base with mastic.

Types of mastics

Mastic is homogeneous organic mass, which contains modifiers, a solvent, bitumen (a by-product of oil distillation), an antiseptic. Depending on the method of preparation, two types of it are used for the base: cold and hot.

Hot - prepared directly at the construction site two hours before use. When preparing it, personal safety precautions must be observed. Most often, this type is used in the construction of large facilities, since its cost is much lower than the cold one.

Cold look - when cooking does not involve the use high temperature. It is commercially available ready-made, so it is much more convenient to use and safer than hot. The only drawback is the high price.

Preparation for processing

When carrying out waterproofing work, it is necessary to prepare special tools.

Namely:

• Bulgarian;
• Building hair dryer;
• cement mortar;
• primer;
• Putty knife;
• Roller or brush.

You can start coating only on a properly prepared base surface. It is necessary to carefully examine its surface, and if bubbles, cracks or chips are detected, it is necessary to rub them with a fine-grained cement solution.

If such work has not been carried out, then the applied layer of material will burst after a while. As a result, the quality of the waterproofing will deteriorate sharply, and the work will have to be carried out again. The presence on the basis of "scallops" with sharp protrusions is also unacceptable. They are necessarily removed by the grinder.

The corners of the base are being processed. They are slightly cut or rounded. Transitions to a vertical surface are equipped with "dumbbells" to make the connection of elements smooth.

Do not forget about removing debris and dirt. Then it is necessary to reduce the humidity of the treated surface. For this, a building hair dryer is used. If the surface is not sufficiently well dried, then the applied mastic may swell or completely peel off.

Important! To be completely sure of sufficient drying of the base, you can conduct a small test. For a day, cover part of the base with a film. If at the end of this time no condensation forms on it, then the foundation is well dried. You can start processing it.

Primer treatment

To reduce the consumption of mastic and improve the quality of its connection with the surface, it is necessary to prime the entire base. Priming with a primer is carried out taking into account the type of the selected mastic.

The primer is applied with a roller (brush) over the surface of the entire base. When smearing the foundation with it, it will be possible to apply only 1 layer. After completing the application, it is necessary to leave the primer to dry for several hours.

The application of its second layer is possible only at the points of attachment to the base of the building structure.

The process of applying mastic

The treatment of the foundation with bituminous mastic begins from its surface, where the magnitude of the water pressure is greatest (from its outer side). After opening the can, the material is thoroughly mixed. For its application, depending on the consistency, a spatula, roller, brush is used.

When applying it, it is important to remember that the layers must have the same thickness, be continuous, not have gaps, and the smearing itself is done from top to bottom. The next application should be carried out after the previous one has dried.

The thickness of the coating on average ranges from 2mm to 4mm. This value is affected by the depth of the foundation. If it is located at a depth of up to 2 meters, then the layer of applied material is 2 mm. If the depth of occurrence exceeds this value, then the thickness of the coating increases to 4 mm.

Determining the readiness of the surface for applying the next layer of coating is easy. It is enough to touch the first layer. If there is no sticking to the fingers, then you can safely apply the next layer. To extend the life of the mastic, after the completion of the application of the last layer, soft soil is poured onto it.

Useful video:

Subject to the technology of waterproofing with bituminous mastic, its correctly selected form, the process of processing the base of the structure can be done independently with high quality.