- structural wood panel, usually OSB or plywood, installed over studs, floor joists, or rafters/trusses.
- Planks used to line the sides of an excavation, such as for shoring and bracing. See also sheathing.
- 7/8" tongue and groove board.
- sheet piling.
- A form of plastic in which the thickness is very small in proportion to length or width, and in which the plastic is present as a continuous phase throughout, with or without filler.