Timber drying
According to high European standards wood used in manufacturing of living houses should be dried and contain up to 18-20% humidity. No juice traveling takes place in timber after drying, the process of photosynthesis stops, fungi do not live after thermal processing and wood keeps its healthy properties. Timber cutting and wood processing is preferable to be made in winter time. By the end of September juice traveling lowers and wood humidity falls up to 60% as compared with the summer cutting when the log humidity makes approximately 80%. Winter cut timber is less apt to diseases and rotting.
There are two ways of timber drying on the enterprise: natural drying and forced drying in a chamber. The process of the natural drying is simple. For about half a year the cut bar is kept in the open air under shades. Owing to this bar crackling is reduced. But not every client will be waiting for a year till the timber is dried off – this is the main disadvantage of the natural drying. The process of natural drying does not allow a bar to be dried to 18-20% humidity as required. For a bar to be completely dried off and for the house the process of settling to be avoided we use forced drying in specialized drying chambers.
A bar is kept in the chamber for 2-3 weeks. This allows the necessary 18-20% humidity to be reached. At that the specific weight of the walling bar is reduced to 600 kg/m3 and this is significantly different from 800kg/m3 of the log with its natural humidity. Hence, it is much easier to work with such a bar.