We have a new stock of OSB available now in stores
OSB (Oriented Strand Board) is an engineered wood-based panel consisting of strands of wood which are bonded together with a synthetic resin; the strands are pressed together in layers. In the outer layers strands are generally oriented longitudinally in line with the panel length, whereas in the middle layers strands generally lie in a cross wise direction.
Four grades of OSB are defined in EN 300 in terms of their mechanical performance and relative resistance to moisture. OSB/1, OSB/2, OSB/3, OSB/4.
OSB must be conditioned to bring it into equilibrium with its environment before it is fixed. This is usually achieved by loose stacking of the panels in the room where they will be used prior to fixing them.
The time required for the panels to achieve equilibrium moisture content will vary depending upon the temperature and relative humidity in the building.