It is possible to use masonry or concrete to clad the steel frame, but this drives up costs and construction time significantly at the expense of the building’s energy efficiency. Instead, OSB board is used. OSB is pre-manufactured using crossed, perpendicular-oriented wooden strands that are applied to one another under high pressure with fire-resistant resin at high temperature, creating a structural board with high levels of mechanical resistance and rigidity as well as exceptional thermal and acoustic resistance.
Advantages of OSB Board are:
· A solid structural board with premium mechanical resistance
· No lamination problems, straight forward to assemble, easily nailed
· Shock resistant
· Superior thermal and acoustic resistance compared to masonry
· Being lighter in weight means it costs less to transport than bricks. Typically, all of the OSB boards for an entire house can be transported with one truck load,compared to numerous tuck loads for bricks.
· It allows for faster construction times - with oriented strand boards a light steel frame building is typically assembled in half the time it takes for the outer shell of a brick-and-mortar home to be built.
OSB can be finished in the traditional manner using plaster and paint, or alternatively fibre-cement-woodchip boards to create the appearance of a traditional Vermont cladding.