sheathing

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.

An exterior covering on the underwater part of a ship's hull that protects it against marine growths.

The act of providing sheathing.

Inclosing by or as by a sheath.

The act of one who sheathes.