Finishing wood - what and how to cover the material
The main enemies of wood are water and fire, the rays of the sun and living microorganisms, insects that gnaw the tree or choose it as a breeding ground (here we are talking about molds).
And wooden structures that are placed outdoors are especially in need of protection from aggressive opponents, which negatively affect the structure, strength and appearance.
For this reason, the question of how to cover the tree, and especially on the street, will be relevant for the owners of a country house. When you get acquainted with the whole variety of protective compounds, you can choose the composition that is suitable for your purposes, which will be affordable for you.
Any natural building materials are exposed to the external environment - they can expand when the temperature rises, absorb moisture, and also fade under the rays of the sun.
A tree with this plan is especially vulnerable. It is a living organism, and after cutting from the root it loses moisture. The drying process is accompanied by cracking and deformation, and at the same time, with an increased level of air humidity or even contact with water, the wood begins to actively absorb it, and, as a result, swell.
The accumulation of moisture in the wood will necessarily lead to the fact that mold and mildew spores will settle in it, which begin to rapidly develop and destroy the structure, penetrating deeper and seizing the surface. Signs of such a lesion will be visual differences - this is the heterogeneity of the wood texture, bloom of gray / white / bluish and black, stains that spoil the appearance of the wood structure.
Gradually, the tree becomes ordinary dust.
Please note, h that rot caused by fungi is dangerous not only with a destructive effect on wood, but also very harmful to human health. Fungal spores that are in the air penetrate deep into the lungs and begin to cause various diseases.
For many designs, this situation will be very dangerous, even if they do not have high aesthetic requirements. For example, if you do not think in advance what exactly to cover the porch of the barn or handle the wooden fence posts, then after a short time everything will rot and the fence will not be able to carry the load that was calculated earlier.
The second dangerous factor is fire, which the tree cannot resist without special treatment. In addition, woodworm insects, which gnaw many passages in it, will irreversibly destroy the structure of the material and deprive it of its former strength.
Moreover, after a certain time, the surface of untreated wood parts begins to darken and an ugly gray tint is obtained, while the material becomes covered with deep cracks.All this will not in the best way affect the appearance, and therefore it is worth deciding what to cover the wood with on the street, so that for a long time both the strength and beauty of the material are preserved.
The protection of wood material from adverse environmental influences must be of an integrated type, which means that it will not be enough just to paint or even soak with killing agents against fungi and bacteria.
First you need to carefully prepare for processing, and first of all, dry the wood as best as possible.
Please note, that only dry wood can be processed, and its moisture content should not be higher than 14%, since this very norm was established in accordance with GOST 17231-78 when carrying out outdoor works.
Therefore, before thinking about the best way to cover the tree, you should first let the raw wood stand so that the natural moisture from it evaporates (this works in cases where a building is made of raw material) ...
Drying time will largely depend on the initial moisture content and the cross-section of the elements.
For example, a log or a bar may even take a whole year. You cannot paint products on which traces of mold are visible, so first you have to get rid of it. But surface sanding, which is performed before you cover a wooden bench on the street or any other wooden structure, will make it possible to significantly reduce the consumption of impregnation.
Varieties of protective impregnations
The main purpose of processing wooden street structures is to protect them from moisture, as well as from biological effects .
.. For this reason, formulations with antiseptic properties should be used.
On sale you can find funds on different bases:
They can be applied only in the last layer, because no other composition is able to stay on such a film.
There are also special types of impregnations with certain functions, for example, compositions that are needed to process the ends of a freshly cut log house built from a log or bar. Due to the uneven evaporation of moisture, they crack strongly, and due to the duration of the process, which can last more than a year, they are affected by mold.
Anti-decay preparations that prevent shrinkage cracking will help get rid of this problem. Some structural elements do require particularly serious protection. These include the lower crowns of log cabins, boards from the subfloor, logs, support pillars and so on. In addition to atmospheric moisture, they can also be affected by soil moisture, which can cause rapid destruction of a biological nature. For this reason, strong preservatives are required here that will not wash out.
But before you cover a tree porch on the street or the first log crown made of rounded logs that will not be painted with covering compounds in the future, you should think carefully. The thing is that such products contain in their own composition compounds that can change the shade of the tree and give it a greenish tint. The funds include Prosept Ultra, Senezh Antiseptic, Cedar Bio Prof, Neomid 430 eco and others.
Good advice! For processing those parts of wood that will directly contact the ground (for example, we are talking about the lower part of the fence posts), it is worth using birch tar, and it is better to use bitumen or even tar.
Whitening compounds are a separate type of wood finishing.
They are able to help remove traces of fungus from the surface that stain the wood. Naturally, if it has not gone very far.
Among them are:
To clearly verify the effectiveness of bleaches for wood, we suggest watching a video.
When choosing a means for treating wood outdoors, to reduce the risk of wood fire, you should pay attention to fire retardant impregnations.
They will be required in order to protect gazebos with barbecues, buildings or even baths that come into contact with open fire.Like formulations with preservatives that do not wash out, they contain coloring agents for the material, but at the same time give the wood a pleasant, even beautiful pink hue. It is easier to change it with a subsequent decorative type coating.
Please note, that since outdoor structures in any case require protection against decay, it is worth choosing not a special fire retardant agent, but a composition that has functions of protection against bio- organisms and fire.
All compositions of decorative type for wood in outdoor works have certain protective properties. Some are due to the creation of a waterproof film on the surface, and the rest are due to special additives. But such a statement will apply only to those drugs on the packaging of which there is a note about external use.
If it is not there, then it is imperative to treat it with an antiseptic before coating the material. The decorative compositions include all the above-described means that have the effect of toning the material.
We are also talking about transparent impregnations with an ultraviolet filter - it will absorb the sun's rays and allow you to preserve the natural shade of the wood.
Various types of paints and varnishes should be attributed to decorative coatings:
It may take several hours to dry.
But such compositions are more durable, and after a while they will not change color due to exposure to sunlight.
In addition to paints, wood outdoors can also be protected with decorative varnishes. Like paints, they can be water-based or even synthetic.
Water dries quickly, creates a matte finish, and is used most often in areas that are protected from direct weather by canopies. Excellent performance characteristics of polyurethane varnish with a glossy texture, the most durable and durable is the coating with deck or yacht varnish.
Even in gentle conditions of use, wood must be coated with protective agents so that there is no cracking, discoloration and decay. Outside the house, it is worth doing this without fail. The best way to cover a tree outdoors will depend on the location of the structure, its type, purpose and appearance requirements.
A variety of decorative and protective products makes it possible to choose a composition for any occasion.
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