Orientated Strand Board (O.S.B.)
Is an exterior panel product that can be cut and painted. Sydenhams stock 2 grades.
It is used for packing and sheathing ceilings and roofs.
This is a standard grade, stocked in 8mm, 11mm, and 18mm thick.
This is a conditioned grade that is more stable in moist conditions, stocked in 18mm thick.