What is the covering that is applied directly to the studs or framing of a structure called?

The covering applied directly to the studs or framing of a structure is referred to as sheathing. This material serves a crucial role in the construction process, providing structural support and enhancing the overall strength of the wall assemblies. Sheathing materials, which can include plywood, OSB (Oriented Strand Board), or gypsum board, are installed directly onto the wood or metal framing before other finishing materials are applied.

This layer helps to brace the structure, preventing lateral movement and adding stiffness to the walls. Additionally, sheathing acts as a substrate for other materials, such as insulation, moisture barriers, or exterior cladding systems.

Other options, while related to construction, have different functions. Insulation is used to improve energy efficiency by reducing heat transfer. Wall cladding is an exterior layer that provides aesthetic appeal and protection against the elements, and drywall is typically used for interior finishes to create smooth wall surfaces, being installed after the sheathing process.