A solid foundation for a terrace
Every worker knows: Before you start laying any kind of flooring, you must first create a foundation. Even the heating of the floor never falls directly on the concrete. Alas, most consumers do not know how much these designs extend the durability of the floor covering, and continue to perceive lags as additional unnecessary expenses. And, I must say, very in vain. After all, if you think about it, the construction of a terrace is no different from building a house. It also needs a foundation for the terrace. Otherwise, very soon the terrace board will simply sit down and after 5-7 years will completely go underground. That's why it's so important to make not just lags, but those that will withstand the cold, dampness, and will not be spoiled by rodents or wood-bug insects. By and large, any tree is suitable, since most of the sawn timber passes the required stage of chemical processing. The product is impregnated with a special compound, which protects the tree from moisture, mold and pests. But this is not very pleasant to those who want to create an environmentally friendly house, which will not be scary to breathe. And there is a solution to this problem. 
Logs for a terrace board from Siberian larchdo not undergo chemical attack, as this rock itself has all the necessary properties, remaining useful for health, strong and not prone to rot. To realize how much moisture does not affect the decomposition of this tree, it will suffice to say that the whole of its history of existence on piles from Siberian larch is the old city of Venice. Impressive, is not it? This property is due to the high content of gums and resins. Thanks to these two components, water makes the larch only firmer. 
As for the low temperatures, they do notterrible to a miracle tree. The weather conditions of Western Siberia and the North Urals have hardened this breed so much that it does not care whether it's hot or cold around - it does not affect the structure of the product. In addition to all these advantages, larch can also boast of what is absolutely not attractive for any kind of insects and rodents. Therefore, such a foundation for the terrace guarantees a long life of the outdoor terrace. Even the oak can not boast such a set of excellent qualities, but meanwhile, the cost of products from Siberian larch is somewhat lower. And what other tree allocates so much useful substances?
