What is the function of a sheathing board in construction?

The function of a sheathing board in construction is to provide structural support and a surface for attaching exterior siding or roofing. Sheathing boards are typically made from materials such as plywood or oriented strand board and are installed over the framing of a building, such as studs or rafters. This installation adds rigidity and strength to the building’s framework, helping to maintain its shape during construction and throughout its lifespan.

Moreover, sheathing serves as a base for attaching insulation, roofing materials, or siding, which are important for protecting the building from weather elements and contributing to its overall energy efficiency. By ensuring proper attachment of these elements, the sheathing board plays a critical role in the building envelope, helping to safeguard the interior space against moisture infiltration and air leaks. This functionality is crucial for maintaining both the structural integrity and long-term performance of the building.