... OSB/2, MR glue, for construction indoor, furniture and packing board. OSB/3, with better features of much more durable, ... solid wood plank, have been widely used for construction outdoor, roof decking, roof sarking, wall sheathing, flooring, packaging, hoardings, signboards and portable ... 8) Note the OSB 3 is for use on flat roof situtaions, a far better product than standard chipboard or particleboard ...