Wood is a natural, environmentally friendly and affordable material that brings warmth and comfort to the atmosphere, but is considered impractical due to the fact that it quickly collapses from the effects of the external environment. Stronger concrete and brick structures are less beneficial to human health and less decorative.
Alkyd paints for wood
But the problem of protecting wooden surfaces is quite simply solved by impregnation or painting with special compounds. It is important to choose moisture-resistant, wear-resistant paints - an alkyd paint for wood for outdoor use may be an ideal choice. Some formulations are able to protect wood not only from the effects of ultraviolet radiation and fungus, but also from damage by pests.
Application of alkyd paint
Alkyd paints are obtained by mixing a binder component - an alkyd resin, a coloring pigment and a solvent (kerosene, white spirit and others). Sometimes the mixture includes a desiccant, which affects the drying rate, thixotropic (avoiding spreading) and antifungal additives. Such a coating is water-resistant, dries quickly and does not turn yellow, unlike some other paintwork materials.
The composition of alkyd enamels and their properties
|Elasticity||Polymer film layer formed when the paint dries, it is able to withstand deforming effects, wear-resistant and resistant to mechanical abrasion.|
|Resistance to weathering|| The coating is resistant to ultraviolet light, temperature extremes and precipitation.
|Relatively fast drying||These compounds can dry from 4 hours to a day.|
|Versatility||Alkyd paint for wood can be used for exterior and interior work. It is easy to apply on your own with a brush, roller or spray gun.|
|Protective properties||The coating protects the wood from moisture, easy to clean with non-abrasive products.|
|Diverse range|| Alkyd paints and varnishes are glossy and matte.
They are favorably distinguished by the variety of shades, the possibility of tinting and retain their brightness for a long time.
Despite their versatility, such compositions are rarely used for interior work because of their specific odor, which persists even after drying.
Alkyd paints: advantages
The disadvantages can also be attributed:
Alkyd painted surfaces
Alkyd paints have their own classification, which allows you to better navigate when choosing products for various types of work.Each type has its own alphanumeric index, the letters in which denote binders:
The last numbers in the index reflect the position of the alkyd paint in the catalog.
Classification of alkyd enamels
The first number in the code indicates the area of application:
1. PF-115 - one of the most popular paints, it can be used for primed surfaces, including wood, outside and inside the premises.
It is applied in two layers, creating a durable moisture-resistant surface that does not turn yellow or fade. Its popularity is explained by its affordable price, good technical characteristics and a varied palette. There are more than 20 shades of this paint. PF-115 is diluted with white spirit or turpentine (you can use a mixture of them in a 1: 1 ratio). The layer dries from 8 to 24 hours.
The covering ability is not very high: 30-120 g per 1 m2.
Technical characteristics of PF-115 enamel
2. PF-133 - used for painting wagons, containers and other surfaces, with the exception of agricultural machinery. It is necessary to apply in several layers on the prepared (primed) surface. One layer dries up in 2 hours.
There are 15 shades. The properties are preserved for 5 years. Before use, it is diluted with a solvent, xylene. Coverage: 20 to 120 g per m2.
PF-126 is sold together with the NF-1 desiccant, which accelerates drying. It is used for wagons, metal, wood surfaces that are exposed to atmospheric influences. It is diluted in the same way as PF-133. Dries up in a day.
PF - 126
There is a special type of compositions - oil-alkyd, which are made on the basis of special resins.
These paints are less popular as they dry slowly and turn yellow over time, but due to their low cost they are often used as primers. For such use, they must be diluted with white spirit. The marking is the same as for alkyd - GF and PF.There are also varieties obtained using natural (MA 021) or artificial drying oil (MA 025).
Oil-alkyd paint Eskaro Veranda Primer
Wood has a porous structure and absorbs moisture strongly, therefore the consumption will turn out to be somewhat higher than when painting, for example, metal.
The required volume is calculated based on the surface area. You also need to know the hiding power of the paint and its dry residue - these indicators are usually indicated on the packaging. It is better to take a little more of what you need than to go back to the store for an extra can later.
How much paint is needed for 1 m2
Opacity is a parameter that shows how much material is needed to cover the main color, and dry residue - how much substance will remain after the composition dries. On average, for alkyd paints, the first parameter is in the range of 30-140 g per m2.
The formula for the calculation is as follows: the spreading rate is divided by the dry residue, and the result obtained is multiplied by 100. This will be the consumption per m2. To get the amount you want, simply multiply the flow rate by the surface area.
Paint consumption table
It is recommended to use alkyd compounds for painting frames, entrance doors, platbands and facades of wooden houses. When working with paints, you must use personal protective equipment: glasses, a respirator, gloves, and also observe safety precautions.
If the composition gets on the skin, you must immediately remove it by wiping with a rag, and rinse the contaminated area under a copious stream of water.
For painting you will need:
Thinner for alkyd paints
Putty for wood
Primer for wood to be painted - tips for choosing
Before using the alkyd compound:
Important! Alkyd paints are highly flammable, therefore they should not be used near open fire.
Impregnation for wood
There are many ways to remove old paint, including using a building hair dryer or a special compound, after processing which it softens and is easily removed with a spatula.
The latter option requires the mandatory use of protective equipment, since most of these formulations are toxic.
Three ways to remove old paint
Even if the package states that the composition can be applied to old paint, you still have to remove flaky particles. For filling cracks with a depth of more than 1 mm, wood putty will be required, uneven places also need to be sanded.
How to putty a wooden surface
Then a primer is applied to help reduce paint consumption, improve adhesion and extend the life of the wood.
Brush primer application
Important! It is necessary to dry the primed parts well (preferably within a few days), since alkyd compounds do not tolerate application to a damp surface.
It is not recommended to paint the wood after rain, as the coating may crack. The moisture content of the material can be measured with a special device. It should not be higher than 17%. Optimal - 14%. In the presence of a fungus, the affected areas are dried and treated with special compounds.
Before opening a can of paint, it is recommended to shake it up and stir it before application. White spirit or kerosene is used for dilution, but usually the composition is sold ready-to-use. If this is necessary (for example, when using a spray gun), then some of the paint must be poured into a separate container and, stirring constantly, add the solvent to it in small portions.
How to mix paint with solvent
Stir the paint until smooth
White paint works best for windows, as it reflects sunlight and heats up less, resulting in longer life.
When painting a window, stick masking tape on the glass
When painting windows, stick masking tape on the glass so as not to stain the glass.
A wide spatula can be used. In order not to scratch the glass, it is moistened with water.
For flat surfaces it is more convenient to use a roller, rough ones are painted over with a brush.
With a roller you can achieve a high-quality and effective result
Painting with a roller
The next layer is applied only after the previous one is completely dry. Drying speed depends on the type of paint.
To make the coating last longer, a top coat can be applied to the surface after painting.
Construction finishing varnish
Alkyd paints are suitable for a wide range of jobs, wear-resistant and affordable at a price, because they will be among the leaders of paintwork materials for a long time.
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