A mandatory procedure that must be performed after the installation of the log house is the grinding of logs. These works are a preparatory stage for finishing the walls and help to level the surface of the tree, remove defects, mold and putrefactive formations from it. Processing improves the adhesion of walls with antiseptic and coloring compounds, and also helps to reduce the consumption of the latter. When applying solutions on an unprepared plane, the impregnation of wood is of poor quality and unevenly.
In addition, during the manufacture of rounded logs, due to overheating of the cutting edges and a violation of the sawing technology, polished areas may form on the surface of the tree. Such places are poorly impregnated with protective compounds, therefore, subsequently they are more prone to damage.
When sanding, the defective layer is removed and the natural properties of the wood are restored. It is advisable to start sanding the log house immediately after the completion of the main construction work, without waiting for the final shrinkage and shrinkage of the tree, since smooth, even logs better resist the effects of the environment and the penetration of harmful insects.
Required Tools
Grinding a log house can be carried out with the help of a specialized organization or independently. The process consists of several simple operations, the implementation of which, however, requires a certain skill and accuracy. The set of mandatory tools used by the performers of the work is as follows:
- eccentric grinder;
- grinder with emery nozzles;
- belt type grinding machine;
- chisel;
- individual protection means.
The belt type grinder provides maximum performance, however, in the absence of experience in using this tool, there is a high probability of marriage. The eccentric machine allows you to grind logs, leveling the pressing force, which prevents the formation of accidental depressions and bumps. The grinder is used for grinding grooves between logs, and hard-to-reach places of corner joints are processed manually with a chisel 20 mm wide.
Execution of works
Grinding a log house is a laborious process, and its technology has various variations. Some experienced craftsmen believe that in order to grind a log house, you need to wait for the end of shrinkage, while others clean up as the walls are erected in order to avoid damage. To make the right decision, it is necessary to take into account the quality of the building material. A factory-coated rounded log can last 1-2 years without noticeable damage, but after that time it will take much more effort to process it.
The main work on the facade and the inner surface of the walls of the log house is recommended to be performed using an eccentric grinder. Depending on the number of builders, the common plane must be divided into sections on the basis that in one day the contractor polishes from 6 to 8 square meters. It should be borne in mind that the area should not be left unpainted for more than 3-4 days, as the material will darken and the cleaning will have to be repeated.
A plastic flat nozzle is installed on the grinder. Rubber options are not suitable for a round wooden surface, as they quickly become unusable. The work is carried out in two passes:
1. First, it is necessary to grind the rounded log with coarse sandpaper (No. 40). With the help of this abrasive, the top layer of wood is removed, all defects, fungal and mold damage are eliminated;
2. the final cleaning is done with fine-grained emery (No. 100). In this case, alignment occurs and the wood pile raised during the primary grinding is removed. The surface should be smooth and pleasant to the touch.
After finishing the grinding of the main surface of the site, it is necessary to refine the grooves and corner joints of the log house. You can grind the grooves between the logs with a grinder with a plastic nozzle. For safety reasons, its diameter should be slightly smaller than sandpaper. Otherwise, there is a danger of injury when the nozzle is jammed between the logs and the grinder is pulled out of the hands. Corner joints of log structures can only be cleaned manually using a chisel. The ends of the logs are polished with a grinder or a belt-type machine.
The most common mistake made when processing a wooden cottage or polishing a log bath with your own hands is the wrong choice of tool, which is associated with a desire to speed up the routine process. Too powerful grinder, operating at high speeds, the structure is easily damaged. If you awkwardly press the handle or change the angle of the nozzle, a deep recess will remain on the surface, which can no longer be removed. Practice shows that the optimal power of the grinder should be 700-800 watts.
Grinding a house from rounded logs involves the formation of a large amount of dust, so work must be done with personal protective equipment. It is recommended to use transparent goggles with side shields, a respirator mask, headgear and gloves. Shoes should be comfortable and durable. It is possible to grind sections of walls at a height using professional inventory scaffolding or high-quality scaffolds made on site.
Application of antiseptics
To protect against fungus, prevent the development of mold and damage to wood by insects, the rounded log must be treated with antiseptics. They increase the durability of wooden building structures and help reduce the cost of their repair during the further operation of the log house. In order to choose the right solution, take into account the following:
1. the cost of a quality composition is quite high, but since we are talking about long-term investments, it is impossible to save on this;
2. you should buy an antiseptic in specialized hardware stores or supermarkets, as this reduces the risk of buying low-quality goods (the latter, in addition to its uselessness, can also turn out to be toxic);
3. when buying a product, you yourself need to make sure of the guarantee of protection against all types of biological effects;
4. the composition for the outer walls of the building should not be washed out by precipitation from the pores of the wood;
5. In order to preserve the protective properties of the log, the log house after impregnation with an antiseptic must have a finish coating.
Primary impregnation is carried out immediately after the logs have been sanded. In this state, wooden structures can withstand about a year. If shrinkage continues, after this period, intermediate impregnation of the log house with an antiseptic is performed. Final processing and finishing coating are carried out after the wood has completely dried and the geometric parameters of the building have stabilized.
The impregnation process can be carried out manually with a brush or mechanically using pressure sprayers. The first method is more time consuming, but allows you to achieve the best result. The main quality criterion is to cover the entire area of the walls of the log house with an antiseptic in two layers. For the convenience of tracking missed areas, a coloring pigment is added to the protective composition.
The cost of polishing a log house by specialized organizations depends on the technical condition of the logs, the standing time of the structures, as well as the region where the cottage was built. On average, polishing 1 square meter of a log house wall costs 200-300 rubles, and in Moscow and the region the price is the lowest due to the great competition among the performers.
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