How to paint a tree: make a choice
What to paint a tree, it is worth choosing according to its breed and environment. Indeed, for external surfaces, only material that does not respond to temperature changes and high humidity is suitable.
What paint is better to paint a tree, we will deal with you today. Also on video and photos you can get additional information you need.
The content of the article
The choice of paint and varnish material (LKM)
Before choosing a paint for processing wooden surfaces, it is worth considering the aspects:
- The breed of wood from which the surface for painting is made. For example, hardwoods are used for interior work. Bearing structures are usually made of conifers.
- The conditions in which the operation of wooden structures will be carried out. Will, for example, the processed product be in conditions of high humidity, or constantly in contact with the ground.
- The ability to prepare the surface for painting, pre-treatment methods.
- Whether it will be realistic to re-process.
- Whether finishing coatings are compatible with primers or coatings applied previously.
Attention: How to paint a tree on the street is significantly different from internal surfaces. It is better to choose a dye that does not have a water base.
Types of paints
Paintwork materials are conditionally divided based on their scope, as well as appearance. Materials for the processing of wooden products include not only the paints themselves, but also a variety of impregnations, primers (see Primer for wood and the rules for its selection), varnishes, putties.
Using paint alone, it is difficult to achieve a coating that will delight with its reliability and long service life. Only by choosing the right impregnation, paint, primer, as well as properly combining them, you can achieve the desired results.
It is not for nothing that most manufacturers present whole complexes of coatings - various primers, primers, enamels, the instructions for which indicate what the surface should be treated to prepare it for painting.
Based on the externally visible signs, paintwork materials can be divided as follows:
- transparent coatings;
- dispersion paints;
- opaque enamels.
Transparent dyes
Transparent coatings include protective glazes, various impregnations and transparent varnishes.
So:
- The composition may include a variety of components that determine the future color of the product, emphasize the natural wood structure, as well as substances that protect the treated surface from ultraviolet radiation.
- The advantage of these coatings is their high vapor permeability, which allows moisture to naturally evaporate from the painted product. The material coated with transparent varnish receives additional protection against damage and ultraviolet radiation; it ages more slowly and wears out. After one or two years of operation, it is desirable to re-paint the treated surface, while removing the previous layer is not required.
Attention: Such paint in cans for wood is sold quite often, but its price is much higher than in the can version. Therefore, for large volumes of painting spray can is not profitable.
Dispersion coatings
The popularity of dispersion paints is gaining momentum, today they are in great demand.
Attention: The solvent in such paints is water, and acrylates or their copolymers act as binders.
- By coating products with such dyes, their high water resistance and long-term preservation of the acquired color can be achieved. In addition to everything, products painted in this way have absolute vapor permeability and frost resistance (since the aqueous solvent evaporates after drying).
- An important requirement for the storage of acrylic paints: it is unacceptable to store dispersion dyes at low temperatures. The fact is that the water that is part of the composition freezes, which leads to delamination of the paint or the loss of the main important properties.
The binding components in dispersion coatings are often the following:
- Acrylates - esters of acrylic acid or its salt.
- Alkyd resins - highly viscous sticky products synthesized through the interaction of polyhydric alcohols and monobasic higher fatty acids in the presence of carboxylic acids.
- Synthetic latexes - emulsions of dispersed polymer particles in an aqueous solution.
Caution: Acrylic is widely used for all types of work. Such paints can be easily mixed, tinted, obtained with their help an extensive color gamut - at least two thousand shades.
In addition, they are easy to use, they can be applied in several layers. For drawing it is admissible to use a brush, roller or spray.
Good acrylic paints are very durable, the average service life is 5-9 years, but cheap (less than $ 2 per kilogram) dispersion dyes, as a rule, do not have this advantage and their use is not economically justified. Re-painting is done as the wood products age.
Opaque enamels
After the appearance of the main competitor - acrylic dye, the use of traditional opaque enamels has greatly decreased. But the demand for them is still quite high due to the good quality of the coating, as well as ease of use.
Despite these advantages, opaque enamels are quite toxic and, moreover, are highly flammable. Alkyd coatings are in high demand due to their low price.
Features of alkyd coatings include:
High hydrophobic properties | Protection from water is due to the appearance of a thin but strong film covering the processed product: due to quick drying, the dye practically does not penetrate the wood. But such a film is not durable. |
Low vapor permeability | Products coated with alkyd enamel practically do not react to changes in humidity. For this reason, for painting elements that should not be deformed under the influence of moisture, they are painted with alkyd paints. |
Application Feature | Enamels are applied only to well-dried surfaces. If enamel is applied on untreated, non-dried wood, then bubbles will soon swell on the product, and the paint layer will subsequently peel off. |
Acrylic and polyurethane varnishes and enamels are based on an organic solvent.
They are characterized by:
- Elasticity and durability. The materials are resistant to bloating, peeling and flaking, to pollution and washing, they adequately tolerate mechanical influences. The service life of processed products is increased by several years. Especially these properties are possessed by dyes based on polyurethane.
- The toxicity of the feedstock (isocyanins). For this reason, many prefer to use alkyd or acrylic enamels and varnishes. After all, they also retain color brightness perfectly and are not toxic.
Well-known types of coatings
Paints and varnishes in their composition are complex substances and are a mixture of several basic components: a binder (forms a film), filler, pigment-forming dye, solvent.
In addition to the listed components, the composition also includes additional:
Nitro lacquers | They are made on the basis of colloxylin nitrates (cellulose).
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Nitro enamels | They are made on the basis of nitrovarnishes.
Highly flammable |
Acrylic paints | Solutions of polyacrylates or their derivatives in organic solvents or in water.
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Alkyd varnishes | They are based on alkyd resins, solvents and desiccants. Often alkyd varnishes include additional impurities that are included to form a film. |
Alkyd Enamels | They are made on the basis of alkyd varnishes, are distinguished by their versatility, high wear resistance, abundance and brightness of colors in the palette. Alkyd enamels are universal, they protect products well, increasing their service life. |
Oil paints | The main components of an oil-based paint are a binder (drying oil) and a color pigment. They often include desiccants and surfactants. When applying such a paint to a product, a quick-drying film is formed, which gives the product additional moisture resistance.
But despite all the advantages, oil paints lose their former popularity, become less competitive. For example, foreign manufacturers, oil paints practically do not produce. |
Adhesive paints | Adhesive paints include water-based organic polymers.
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Water-based (water dispersible or latex) paints | An emulsion that consists of water and pigment. Often, in addition to the main two components, acrylates, alkides, vinyl acetates and other compounds are included. The peculiarity of such paints is the complete absence of pungent odors, and often do not have them at all. |
Polyurethane paints and varnishes | This is a large group of polymers. The main components are polyols and hardeners.
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Polyester paints and varnishes | Obtained from linear polyester resins.
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You can do all the painting work with your own hands and the instruction will help you in this matter. If you have a large area, then it is worth using a spray gun. Then you can apply the coat more evenly and quickly.