Many private developers have a question, why should this be done if each billet has already undergone appropriate processing in an industrial way? Moreover, a variety of advertisements that attract potential customers and promise them the erection of the house of any architecture "turnkey", rarely indicate the need for additional surface treatment. It would seem that he built it - and forgot. However, this is not quite true.
Why grind
- In the process of shrinkage, under the influence of temperature, humidity, the finest surface layer( bast) begins to separate( peel).The surface of the walls is covered with a barely noticeable loose crust, which eventually becomes visible. As it affects the appearance of the building, it makes no sense to say.
- To ensure good adhesion of the treated surfaces. After all, round logs are wood, and this building material needs high-quality protection from external influences( ultraviolet, moisture).Even if no painting is done( in some cases this is done), surface treatment with varnishes is an obligatory stage of external finishing.
Even on the highest quality rounded logs, inconspicuous microscopic fibers( villi) will always be present. If they are not removed, the subsequently applied paint and varnish composition will gradually peel off, peel off. Therefore, it is much cheaper and more expedient to immediately engage in grinding the frame, than in the operation of systematically carry out restoration work.
- Surface grinding achieves significant varnish savings without sacrificing the quality of the work, the time spent on carrying them out is reduced.
- The presence of fine fibers on the material promotes the reproduction of fungi, other microorganisms and a variety of insects, many of which destroy the wood.
- It is not necessary to exclude the appearance of defects on the surfaces of blanks due to malfunctions in the work of woodworking equipment, after transportation to the construction site. Grinding allows you to quickly eliminate such "point" damage.
- Do not forget about the aesthetic side of the issue. After all, every log has an individual structural pattern. The polished surface more clearly emphasizes its relief, gives to any structure only its own, unique appearance.
Tool - "Bulgarian"
It is necessary to use a model in which speed control is provided. Each rock has its own density( hardness), so the speed of rotation of the grinding wheel is selected experimentally. On the one hand - wood should not "smoke", on the other - you need to achieve the necessary quality processing.
Basic stages of
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Preliminary impregnation with fire retardants and antiseptics( if the logs and bar have already acquired a darkish shade with signs of blue).
- Grinding.
- surface treatment with a disk with grain 80, then - with a density of 120;
- work vibro-, grinders - removing possible scratches, giving absolute "smoothness" to the wood.
In the process of grinding, it is necessary to control the uniformity of pressure on the tool. Otherwise, there will be characteristic "spots", "divorces."
- Secondary covering of surfaces with special compounds( same, against biological pests and fire, for more details read here).For a better penetration into the interior of the structure, this work is carried out at least 2 times.
Features of the work
- The material should dry. If you start processing raw billets, the whole process will be considerably complicated and prolonged, since the tool( its abrasive parts) will have to be constantly cleaned or replaced.
- Grinding is carried out only in the warm season.
- Walls are processed not only from the outside, but also from inside the building.
- The butts are not treated abrasive, but a plastic nozzle to the "Bulgarian".
- Where the machine can not be used, the work is carried out with the help of sharp chisels, sandpaper.
- It is necessary to start work only after the completion of construction work, that is, when the roof has already been installed. And not earlier than in 1 - 1,5 months.
- To begin with, you should try either on the leftovers of the material, or in a place where traces( in the case of a "marriage" in work) will be invisible.
- Protective equipment must be used. Microscopic dust quickly penetrates the respiratory tract, clogs into the eyes. Therefore, do not take to work without special glasses and a respirator.
- Coating of polished surfaces with paints and varnishes should be carried out not later than 3 days after their processing.
It is appropriate to quote the average cost of some types of work. But you need to understand that much depends on the complexity of architecture, altitude and a number of other factors.
