Oriented strand board (OSB) is most frequently used in which application?

Oriented strand board (OSB) is predominantly utilized as a structural material, particularly in applications such as roof, floor, and exterior wall sheathing. This engineered wood product is made from strands of wood that are oriented and bonded together using adhesives, which gives it significant strength and performance characteristics suitable for these structural applications.

Using OSB for sheathing helps provide structural support and a stable foundation for roofing and flooring systems. Its strength and durability make it an ideal choice for exterior walls as well, where it often acts as a barrier against wind and water while providing a surface for siding attachment.

While OSB can be used in a variety of applications, it is not typically used for underlayment of ceramic or vinyl tile, as these products require a more moisture-resistant surface. Therefore, the application of OSB as part of the structural integrity in roofing, flooring, and exterior wall systems stands out as its primary and most common use.