Why?

It is important to know such indicators of a massive board as stability and degree of shrinkage. Why? As you know, in our country there are strong changes in temperature and humidity. Under such conditions, a massive board of some wood can be stole unpredictably: to be covered with microcracks, to crumble, to flush. Stable wood species, such as oak, ash, tick, mirbau, most of all react to moisture differences, especially characteristic of the winter period. In the structure of such breeds — oils and tannins that prevent decay and hardening when drying out. By the stability and degree of shrinkage of one of the best, the massive oak board is: it does not rot with leaks, it becomes stronger every year.