Clapboard — a thin Board for covering buildings and structures, as well as the interior of buildings. Lining "Calm" in a certain way processed Board for covering, which received a unique name. This makes it easy to distinguish it from other types of lining. The surface of the lining "Calm" is very smooth, smooth, like the surface of the sea in calm, which is the reason for this name.
Batten boards are attached to each other using a "spike-groove"connection.
Classification and grade
There is a conditional classification of lining, which implies that there is a better quality material. In reality, however, the quality of the lining visible to the naked eye, and the best proof of quality becomes smooth handling, no visible defects of wood of uniform length and width boards. Pay attention to the grade of wood: the higher it is,the less flaws in the lining. Look and to serve as lining of high quality will be longer.