Cross Laminated Timber (CLT) is an excellent and versatile building material that can be used as a wall, ceiling and roof panel together with other building materials. The CLT layers of finger-jointed material are glued together alternately perpendicularly, resulting in high load capacity in two directions. There are always an odd number of layers, 3, 5 or 7. The cross-layers provide a so-called locking effect, which ensures very good dimensional stability of the board in the event of changes in moisture and significantly reduces the negative effects of wood drying. CLT has no architectural restrictions, so CLT is increasingly used in the construction of private houses, apartment buildings, as well as industrial and commercial buildings.