These are no longer the windows that our parents repainted every year, but for the winter they sealed with a masking tape. These are perfectly even designs made on high -precision modern equipment that have no gaps and gaps. Such a window reliably protects the house from the cold, because, by definition, wood is a magnificent heat insulator that is indispensable in our climatic conditions. If we talk about the varieties of wood, best suitable for the production of windows, then this is, of course, oak. The rich texture of this wood, and its completely unique properties, such as strength, firmness, durability, deserved the oak well -founded popularity. Oak windows are an investment of funds that will last more than a dozen years, maintaining all its attractiveness and causing the invariable admiration of your relatives and friends.