Mastic bituminous: consumption per 1 m2, application technology

Bituminous mastic is a very plastic material with sufficiently high binding and waterproofing qualities. To the ingredients in the manufacturing process, all kinds of fillers in the form of asbestos dust, limestone dust powders, mineral water, and quartz and brick elements are added in the plant's conditions. Among other things, in the process of manufacturing bitumen mastic, combined ash is used, which is formed during the combustion of fuel containing mineral additives. All these components contribute to improving performance, they increase hardness, resistance to low temperatures, and density. The special composition positively influences the material consumption parameters. Fibrous fillers provide the ability of the material to reinforce, increasing resistance to any bending, which increases the scope of use.

General description of the material

Mastic bitumen, the consumption per 1 m2 of which will be mentioned in the article below, is divided according to the principle of curing on cured and non-curable species. There are species that contain water and organic solvents. In the open air, the material solidifies within an hour after application, forming a smooth, elastic surface that has a resistance to negative external influences like precipitation.

If we consider the advantages of this composition, we should highlight its high adhesive ability, resistance to biological processes, as well as water-repellent qualities, which makes it possible to successfully use the material in the open air. Mastic bitumen, the consumption per 1m2 of which is very important for the master, is widely used for waterproofing concrete and concrete surfaces, as well as metal structures in the process of repair and construction works. There is one limitation that must be taken into account: inside buildings, the use of the mixture is prohibited.

Consumption of the formulation

Mastic can be a hot or cold variety. The latter option is made on the basis of solvent or water, and the application to the surface is carried out without preheating. Consumption will depend on the type of material. If it is a hot composition, it guarantees the creation of a non-shrinkable layer, which does not change its thickness when applied. If you use bituminous mastic, the consumption per 1 m2 should be known to you. On average, it is from 0.8 to 1 kilogram. These parameters are correct when gluing surfaces. If there is a need to waterproof the base, the consumption can be increased to 3 kilograms per square meter. In this case, the thickness of the layer should be equal to two millimeters. To achieve a layer of 2 millimeters in a dry residue, it will take 3.5-3.8 kilograms per square meter.

For reference

In most cases bitumen mastic has a dry residue in the range of 20 to 70%. With a minimum indicator (20%), the expenditure will be 3 times more than the higher number (70%). The higher the dry residue, the less is the cost and laboriousness of the work performed.

Consumption of mastics brand "Tehnonikol"

Recently, the bitumen "Technonikol 24" has become very popular among consumers. This material is ready for use, it is modified with artificial rubber and has additives in the form of mineral fillers. Among the ingredients you can find organic solvents and technological additives. The coatings formed with this mixture guarantee high-strength adhesion to the roughing surface. Among the additional features can be distinguished quality of moisture resistance, elasticity and low thermal conductivity. If you are interested in such a bitumen bitumen, the consumption per 1 m2 should be known to you in order to calculate the required amount of material. Thus, for this area will be enough 3.5 kilograms. This indicator is the maximum, while the minimum is 2.5 kilograms. This is true for work that involves the installation of waterproofing. For gluing materials, the composition will consume a volume of 1 kilogram per square meter.

Characteristics of mastic "Technonikol"

Mastic bitumen (GOST 26589-94) can be used for waterproofing works in the field of reinforced concrete, wooden, concrete and other building structures. The range of application temperatures is limited to -20 to +40 degrees. Before application, the material must be kept in a warm room for a day. Mastic bitumen, GOST which guarantees the quality of the material, can be stored at a temperature of -20 to +30 degrees for 18 months. The water absorption by mass for 24 hours is 0.4%, while the heat resistance is 80 degrees.

Application technology

Liquid bitumen is used for priming. The surface is then treated with a liquefied emulsion paste, after the mastic is applied, and at the final stage a protective layer is formed. This can be painting, lining, the use of gravel or coarse sand. Some varieties of bitumen mastic are used as an adhesive base for the installation of web material. If you decide to use latex roofing material, then you can make it a color that will match the exterior of the structure. In this case, experts advise not to use those dyes that contain water.

Whether the liquid bitumen will exhibit all its best technical characteristics during operation depends on the correctness of the preparation work. One-component mixtures are quite convenient and easy to apply. After opening the tank, you can immediately start work. If you have purchased a two-component mastic, you will need to mix. The last version of the mastic provides for a more thorough adherence to the instructions.

Application of bitumen mastic on foundation

Bituminous mastic for the foundation can be applied to the surface only after it has matured. The master must cleanse of dirt, dust and sand, and to improve adhesion, it is necessary to treat the substrate with a bitumen primer. If a larger volume of emulsion has absorbed, then repeat the bearing. The degree of coating thickness should be determined by the saturation of black color. Priming composition should be applied with a roller or a mackerel. After the primer has dried out, which will happen a maximum after 24 hours, the main layer can be applied. If the mixture is excessively thick, then it can be diluted with white spirit. Stirring is best done with a drill with a mixer. If the manipulations you perform on a frosty day, the mastic should be heated to 45-50 degrees in a metal container.

Conclusion

Bituminous mastic, the characteristic of which was detailed in the article, should be applied using a roller, spatula or a construction brush. The layer should not be too thick and have streaks. However, it is also not necessary to spread the mixture over the surface. If it is necessary to apply in 2 layers, you should wait for the drying of the previous one, as for the third layer. More than three layers are applied quite rarely.