Wooden surfaces look great, and well-chosen varnish on wood for outdoor work will make them even more beautiful and also protect them from the mass of external influences. Due to the enormous variety on the market, there is often a problem with choosing the right composition. Let's look at the requirements that apply to him.
In fact, wood varnish for outdoor use is a solution of substances that are capable of forming a protective layer in the form of the thinnest film on the treated surface. However, not every varnish is able to protect wood. So, you can consider the main criteria for his choice. First, talk about wear resistance. At the moment, on sale are compositions that are distinguished by an increased strength indicator. They are usually used as protection for floor coverings, which experience significant loads from constant friction and walking. The second important point is the time of complete drying. And here you have to choose a varnish for wood for outdoor work among the traditional compositions that can dry up to 30 hours, and quick-drying, which will allow you to complete the work in one evening. Nitrol varnishes dry faster than water-based formulations.
Another parameter is toxicity. At the moment, most varnishes have an unpleasant odor, which is associated with the presence of solvents in their composition. Their use in a living room can cause severe headaches. In this case, it is better to choose a water-based composition. The degree of gloss is that parameter, the choice of which depends solely on your preferences. Varnish for wood for outdoor use can give the surface a beautiful shine or make it matte. Fire safety - a parameter that depends on how much the treated surface is exposed to high temperatures. Heat-resistant composition should be purchased if there is a high risk of fire.
It is worth paying attention to the method of applying varnish: is it possible to apply the coating directly to the wood, or should it be pre-treated with a primer. This criterion cannot be called the main one, since most often the first option is found on sale, but it is still worth paying attention to it.
The degree of influence of external factors is the main selection criterion. If the wood is in the open air, is exposed to intense UV radiation, is not protected from precipitation and other phenomena, it requires a special varnish. A high-quality composition will allow the material to withstand numerous moisture-drying, as well as frost and heat. Acrylic varnish for wood in this case will not work, as it will quickly crack, turn yellow, and its surface will lose its attractive gloss. Experts say the need for the presence in the composition of the varnish components that protect against ultraviolet radiation.
So, now you know how to choose a varnish for wood, the colors of which can be quite diverse.