From this article you can find out what water based paint for walls is and what capabilities it has. The text provides information on all varieties of water-based finishing materials, their technical characteristics and application features.
Water based paint for walls: basic information about the group of compounds
Water-based paints are an extensive category of materials designed for finishing various surfaces. To study these mixtures in a narrower sense, you should pay attention to their components, purpose and production method. In the composition of aqueous emulsion dyes, you can notice the complex names of chemicals, but in a 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, in which there are tiny particles of polymeric substances. The type of paint depends on the nature of these substances. In addition, the composition contains additional components. Manufacturers use these elements to give the finishing material useful properties and improve its characteristics.
The composition of aqueous emulsion dyes may contain such components:
- antiseptic agents;
- fungicidal substances;
- antifreeze substances.
The proportions of the components in the composition of water based paints for interior use
An emulsifier or film former is the main component of water based dyes. The scope of application of the finishing material depends on the type of emulsifier.
As emulsifiers are used:
- polyvinyl acetate or, in other words, PVA;
The dye marking directly depends on the type of film former. Additionally, the compositions are filled with mica, chalk, talc, barite. Each of these components can be present in the composition independently or together with others in different proportions. Carboxymethyl cellulose is used as a thickener. This component also has a second name – the adhesive composition of CMC.
Useful advice! Experts recommend buying a spray gun for high-quality and uniform coating when working with water-based emulsion paint .
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 obtained by adding to the composition of a white pigment, for example, zinc oxide or titanium dioxide. All existing types of water-based dyes are labeled depending on the type of emulsifier.
The following types of materials are distinguished:
Many buyers are interested in how acrylic paints differ from water-based compositions. The usual water-based mixture is completely unsuitable for finishing metal surfaces. For these purposes, it is better to take an acrylic material that has heat and water resistance.
Technical characteristics of VEAK 1180 aqueous emulsion ink
This type of dye is popular with consumers. The mark “VE” indicates that the composition is based on an aqueous emulsion. The role of the polymer emulsifier responsible for the film formation is acrylic or the substances that are its derivatives. This is indicated by the marking “AK”.
Technical indicators of VEAK 1180 aqueous emulsion ink:
|Degree of frost resistance, number of cycles||4-5|
|Conditional viscosity index, s||20-42|
|The drying speed of the coating, h||15|
|The amount of non-volatiles,%||60|
|The amount of consumption of water-based paint per 1 m2, g||160|
Such indicators are more applicable to perform internal painting work on the ceiling and walls. The dye perfectly lays on a previously prepared base.
This composition allows the processing of the following types of surfaces:
- plastered base;
- metal (subject to preliminary application of a primer).
The base color base for VEAK 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 dye is about 7,20$.
Application of water based paint: consumption, tinting, tools
In stores there are two options for coloring pigments: natural and artificial. When using natural pigment, the result will be more saturated, however, there is a possibility that the shade of the coating will quickly fade under the influence of ultraviolet radiation. For this reason, the use of natural colors will be advisable in rooms where direct sunlight does not penetrate. Artificial pigments are not so bright, but they show high resistance to ultraviolet.
It is very difficult to achieve the necessary shade at home, so it is better to turn to specialists for help. Choosing your favorite shade on the palette that is in every store, you can tint using a special machine.
Recommendations for the use of colorants for aqueous emulsion paints
If desired, the tinting of the 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. By experimenting at home, you can achieve the necessary color depth. In addition, in the photo, the color of the tint for water-based paint will not always correspond to what will result from mixing in a machine.
In order not to overdo it, it is necessary to introduce coloring pigments into the composition gradually until the color becomes uniform. In this case, the mixture must be stirred all the time.
Useful advice! Re-achieving the same shade is extremely difficult, therefore, 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.
It is possible to carry out trial tinting on a small volume to study the properties of the tint. After that, testing is carried out on an inconspicuous section of the wall. You should wait until the composition is completely dry, so that the color appears. This takes 1-2 days.
For small rooms, it is recommended to choose shades of light colors. They can visually expand the space. If the walls in the room are dark and the ceiling is light, the room, on the contrary, will seem narrower. This method is used when it is necessary to visually raise the height of the ceilings. It is better if the design will be present no more than three colors. This will avoid variegation. The exception is white and black, as well as shades of the same color.
Calculation of the required volume of water based paint, consumption per 1m2
The rate of dye consumption is usually indicated by the manufacturer on the package. These data help to approximately determine how much composition is needed to finish a certain area.
General norms for the consumption of water emulsion dyes:
|Type of water-based dye||Primary application rate, g / m²||
Consumption on the second layer,
g / m²
Additional factors can also affect the consumption of water based paint per 1 m². For example, the structure of the processed surface. For painting smooth plaster, 10-20% less dye is required than for processing 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 that will be used.
Climatic conditions can also affect the expense and quality of the result. In the heat, water from the composition evaporates quickly, so the coating may turn out to be uneven. In this case, you need to level the surface, and sometimes tint stains. Wallpaper for painting will require an increase in the norm by about 20%. The paper has a porous structure, so it absorbs part of the composition. About 5% of the paint is lost when processing the ceiling, flowing to the floor.
How to paint the walls with a roller: recommendations
It is not recommended to use a brush for painting surfaces with water-based paint. Using this tool will increase consumption. Most often, a roller with a tray is taken for such work. In this case, the dye consumption, as well as the decorative characteristics of the coating, will depend on the material and the tool coat. A long-nap roller is best used for finishing stucco work and rough surfaces. To stain a smooth base, you need to take a tool with short fibers.
Useful advice! The use of a 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 selected so that the tool fits freely in it;
- the roller should be immersed no more than a quarter in the paint;
- during painting, it is necessary to press the roller with the same force, passing over the entire surface to exclude strips and stains;
- to dilute thick paint, you can add water, but not more than 10%;
- do not often dip the roller, the coating should be thin and smooth;
- no need to try to apply the dye in a thick layer to reduce work, this will lead to overruns and cracks in the coating;
- between the layers it is necessary to take breaks (at least 2 hours) so that the dye dries.
Is it possible to glue wallpaper on water based paint
Water based paint is a universal 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, to wallpaper. This option for replacing the finish is possible, but subject to preliminary preparation of the base. To do this, the surface of the wall is treated with a solution consisting of glue and soil. The components are mixed in a 1: 1 ratio.
Wallpaper can be glued on top of the water-based dye, provided that the previous coating is made with a high-quality composition and without violating the technology.
Note! Before proceeding with gluing the wallpaper, the adhesive properties of the dye should be checked (coating fixation is reliable). To do this, a regular newspaper sticks to the wall and after drying it comes off the wall. If it is difficult to disconnect, it means that the coating holds firmly enough to support the weight of the wallpaper.
Is it possible to paint with water based paint on enamel
Sometimes an old coating is present 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 finishes. Since these materials are incompatible, it will be necessary to remove the old coating.
How to remove old paint from the walls:
- Removal by mechanical means.
- Chemical dissolution.
- Elimination of coating by temperature exposure.
Enamel is much easier. In order for the water based paint to lay on top of the enamel, matting or primer should be applied. The effect of matting is achieved through the application of drying oil, although this method has a drawback – an unpleasant pungent smell.
Alternatively, you can apply mechanical surface treatment with fine-grained sandpaper. Due to this, the degree of adhesion will increase. The primer performs a similar function.
Is it possible to paint the ceiling with water based paint on old paint
In order to determine the possibility of staining with water based paint on top of the old coating, it is necessary to assess its condition and prepare the surface. The dye will not be able to hide all defects, especially if defects are present on an obsolete paint layer. All bumps and damage, on the contrary, will become visible and catchy. As a result, all work, like the money spent on the purchase of paint, will be wasted.
If the surface is flat and does not have serious flaws, it is recommended to apply a primer before painting. If the old coating peels off, 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, remove the coating and wash the base with an alkaline water solution.
Aqueous emulsion formulations are the most convenient and practical types of dyes to use. Thanks to the wide assortment, buyers do not have problems with the choice of finishing material for indoor or outdoor use.