OSB (aka Sterlingboard)

OSB is an engineered wood-based sheet material in which strands of wood are bonded together with a synthetic resin adhesive. The outer layers of these panels show how the strands are orientated in a particular direction. Our two principle brands stocked at Southern Timber are Smartply and Norboard.

OSB2 is designed for use where a high performance board is required which provides dimensional stability and load bearing capabilities for use in dry conditions. Typical applications for OSB2 would include boarding up, temporary site hoarding, garden sheds, packaging, pallets, furniture and temporary works.

OSB3 is designed for the same uses but is the preferred material where the conditions are humid. Typical applications for OSB3 would include roofing, sarking, site hoarding, timber frame buildings and flooring.

Timbers used in OSB manufacture include both softwoods (spruce, pine) and hardwood (aspen) and after drying the flakes are generally sprayed with a synthetic resin which confers a degree of moisture resistance to the board. OSB will not normally be attacked by wood-boring insects common in temperate climates, but panels made using aspen and spruce are susceptible to fungal attack under prolonged wet conditions; panels made from pine have moderate resistant to attack.

OSB is normally stocked in the following thicknesses:
   ●  11mm thick, sheet size 2440mm x 1220mm (8' x 4')
   ●  18mm thick, sheet size 2440mm x 1220mm (8' x 4')

Other sizes and thicknesses can be obtained to special order