- A layer of boards or of other wood or fiber materials applied to the outer studs, joists, and rafters of a building to strengthen the structure and serve as a base for an exterior weatherproof cladding.
- The wood panels or sheet material fastened to the roof rafters or trusses on which the shingle or other roof covering is laid.
- The structural wood panel covering, usually OSB or plywood, used over studs, floor joists or rafters/trusses of a structure.
Example:
