From this article you can find out what a water-based paint for walls is and what possibilities it has. The text contains information on all types of water-based finishing materials, their technical characteristics and application features.
Aqueous emulsion paint for walls: basic information about the group of compositions
Water-based paints are an extensive category of materials designed for the finishing of various surfaces. To study these mixtures in a more narrow sense, one should pay attention to their components, purpose and method of production. As part of water-based dyes, you can notice complex names for chemicals, but in simple language most of them sound like silicone, PVA glue, chalk, etc. Each type of dye from this category has its own advantages and disadvantages, which depend on the components.
The basis for these dyes is water, which contains tiny particles of polymeric substances. The nature of these substances depends on the type of paint. In addition, the composition contains additional components. Manufacturers use these elements to endow the finishing material with useful properties and improve its characteristics.
The composition of water-based dyes may contain such components:
- fungicidal substances;
- antifreeze substances.
Emulsifier or film former is the main component of water-based dyes. The type of emulsifier depends on the scope of the finishing material.
As emulsifiers used:
- styrene butadiene;
- polyvinyl acetate or, in other words, PVA;
- styrene acrylate.
Marking of the dye depends on the type of foaming agent. Additionally, the compositions are filled with mica, chalk, talc, barite. Each of these components may be present in the composition independently or together with others in a different proportional ratio. Carboxymethylcellulose is used as a thickener. This component has the second name – the adhesive composition of the CMC.
Helpful advice! Experts recommend when working with water-based paint to buy a spray gun for high-quality and uniform coating.
The percentage of components of water-based paint:
|Component||The percentage in the dye,%|
|Polymer in aqueous solution (dispersion)||50-60|
|Coloring pigments and fillers||35-40|
|Thickeners and plasticizers||5-8|
White water-based paint is produced by adding white pigment to the composition, for example, zinc oxide or titanium dioxide. All existing types of water-based dyes are labeled depending on the type of emulsifier.
There are the following types of materials:
Many buyers are interested in the difference between acrylic paints from water-based compositions. The usual mixture of water-based completely unsuitable for finishing metal surfaces. For these purposes, it is better to take acrylic material that has thermal and water resistance.
In the shops you can find an extensive selection of paints from different companies. Therefore, before you buy water-based paint, you must carefully study the technical characteristics and labeling. These marks allow you to get an idea of what the components include a mixture, what are its properties and scope.
The first value is marked with the type of composition:
- VE – water-based paint.
- VD – water dispersion.
Next, the manufacturer publishes information about the type of polymeric substance used as the basis for the production of the dye.
By type of polymer, the following types of markings on the packaging are distinguished:
- CN (butadiene-styrene);
- BA (polyvinyl acetate);
- AK (acrylate or styrene-acrylate);
- Sun (polyvinyl alcohol).
The number “1” marks the front water-based paints, the price of which is much higher than that of ordinary compositions. These mixtures are resistant to all atmospheric phenomena: precipitation, low temperatures, climatic changes, the influence of ultraviolet radiation and microorganisms. The average cost per volume of 2.7 liters on the example of Tikkuril products is 770 rubles.
The number “2” indicates the composition intended for internal use. Thus, interior water-based paints for the ceiling and walls are marked. A similar volume of Tikkuril mixture for internal use costs about 450 rubles.
Regulatory documents are also important when choosing a dye. According to GOST number 281960-89 dye made in full compliance with its requirements, is considered high-quality.
Important! Standards for TU significantly reduced. Therefore, the dye made in accordance with its norms, can not be considered quality.
Technical characteristics of water-based paint VEAK 1180
This type of dye is popular with consumers. Mark “VE” indicates that the composition of the water emulsion is. In the role of a polymeric emulsifier, responsible for film formation, acrylic or the substances that are its derivatives are used. This is evidenced by the label “AK”.
Technical indicators of water emulsion paint VEAK 1180:
|Degree of frost resistance, number of cycles||4-5|
|Conditional viscosity index, s||20-42|
|The drying rate of the coating, h||15|
|The amount of non-volatile substances,%||60|
|The amount of consumption of water-based paint on 1 m2, g||160|
Such indicators are more applicable to the internal painting work on the finishing of the ceiling and walls. Dye perfectly fits on a previously prepared base.
This composition allows the processing of the following types of surfaces:
- the plastered basis;
- metal (subject to pre-application of primer).
The basic basis of the color in WEAK 1180 is white. If desired, the buyer can add coloring pigments to the composition to obtain any desired color. The average cost of 1 kg of the dye is about 500 rubles.
In stores there are two options for coloring pigments: natural and artificial. When using natural pigment, the result will be more saturated, but there is a possibility that the shade of the coating will quickly burn out under the influence of ultraviolet radiation. For this reason, the use of a natural color scheme would be appropriate in areas where direct sunlight does not penetrate. Artificial pigments are not so bright, but they show high resistance to UV light.
To achieve the necessary shade at home is very difficult, so it is best to seek help from specialists. Choosing a favorite shade on the palette, which is in every store, you can perform tinting using a special machine.
If desired, the tinting composition can be performed independently. Most often, this procedure is resorted to in order to save. The cost of white paint and a set of pigments is much lower than the price of tinted composition. Experimenting at home, you can achieve the required color depth. In addition, in the photo color Kohler for water-based paint will not always correspond to what happens as a result of mixing in the car.
In order not to overdo it, it is necessary to introduce coloring pigments into the composition gradually until the color becomes uniform. At the same time the mixture should be stirred all the time.
Helpful advice! It is extremely difficult to achieve the same color again, so it is recommended to calculate in advance the estimated volume of consumption of water-based paint with a small margin and prepare the necessary portion at a time.
You can carry out a test tinting on a small volume to study the properties of the color scheme. After this, testing is performed on an inconspicuous area of the wall. You should wait until the composition is completely dry, so that the color appears. This requires 1-2 days.
For small rooms, it is recommended to select shades of light colors. They can visually expand the space. If the walls in the room are dark and the ceiling is bright, the room, on the contrary, will seem narrower. This method is used when you need to visually raise the height of the ceilings. It is better if the design will contain no more than three colors. This will avoid variegation. The exceptions are white and black, as well as shades of the same color.
Calculation of the required volume of water-based paint, consumption per 1m2
The consumption rate of the dye is usually indicated by the manufacturer on the package. These data help to approximately determine how much composition will be needed to finish a certain area.
General consumption rates of water-based dyes:
|Type of water-based dye||Consumption at the initial application, g / m?||Consumption on the second layer |
y / m?
On the consumption of water-based paint on 1 m? additional factors may also affect. For example, the structure of the treated surface. To paint a smooth plaster will require 10-20% less dye than for the treatment of textured material. When calculating the indicators for the first and second layer are summarized. In addition, you should consider the method of applying the composition and features of the tool to be used.
Climatic conditions can also affect the flow and quality of the result. In the heat, the water from the composition evaporates quickly, so the coating can be uneven. In this case, you will need to level the surface, and sometimes tint spots. Wallpaper for painting will require an increase in the rate of about 20%. The paper has a porous structure, so it will absorb some of the composition. About 5% of the paint is lost when processing the ceiling, draining to the floor.
It is not recommended to use a brush for painting surfaces of water-based paint. Using this tool will increase the flow. Most often for such work is taken roller with a tray. In this case, the dye consumption, as well as the decorative characteristics of the coating, will depend on the material and the coat of the instrument. Roller with a long nap is better to use for finishing stucco and rough surfaces. For dyeing a smooth base, you need to take a tool with short fibers.
Helpful advice! The use of the spray gun for water-based paint will significantly reduce the consumption of the composition. This tool is considered the most economical and suitable for this type of work.
Recommendations for painting walls using a roller:
- the size of the tray must be chosen so that the tool in it freely fit;
- the roller should be immersed no more than a quarter into the paint;
- during dyeing it is necessary to press the roller with the same force, passing over the entire surface in order to exclude stripes and stains;
- to dilute the thick paint, you can add water, but not more than 10%;
- the roller should not be dipped often, the coating should be thin and smooth;
- no need to try to apply the dye with a thick layer to reduce the work, it will lead to overspending and the appearance of cracks in the coating;
- it is necessary to take breaks between the layers (at least 2 hours) in order for the dye to dry.
Aqueous emulsion ink is a versatile type of material that combines with different types of surfaces. Often there is a need to change the design of a previously painted room, for example, pokleit wallpaper. This option of replacing the finish is possible, but subject to the preliminary preparation of the base. To this end, the surface of the wall is treated with a solution consisting of glue and soil. Components are mixed in a 1: 1 ratio.
Wall-paper can be pasted over water-based dye, provided that the previous coating is made with qualitative composition and without violating the technology.
Note! Before you start glueing wallpaper, you should check the adhesive properties of the dye (reliability of fixation of the coating). To do this, a regular newspaper is glued to the wall and after drying it comes off the wall. If it is difficult to detach it, it means that the coating is held firmly enough to withstand the weight of the wallpaper.
Sometimes there is an old coating on the wall, usually in the form of oil paint. These compounds used to be very popular, so they are almost universally used in homes as finishing. Since these materials are incompatible, you will need to remove the old coating.
How to remove the old paint from the walls:
- Mechanical removal.
- Chemical dissolution
- Elimination of coatings by thermal exposure.
With enamel is much easier. In order to water-based paint lay on top of the enamel, you should perform matting or apply a primer. The effect of matting is achieved by applying a drying oil, although this method also has the disadvantage of an unpleasant, pungent odor.
If the surface is flat and does not have serious flaws, it is recommended to apply a primer composition before painting. If the old coating exfoliates, the base should be well cleaned in problem areas. It is not allowed to apply a water-based dye over old lime white. In this case, you need to remove the coating and wash the base with an alkaline solution of water.
Aqueous emulsion formulations are the most convenient to use and practical types of dyes. Due to the extensive range of customers there are no problems with the choice of finishing material for interior or exterior works.