wood lath

wood lath

One of many thin narrow strips of wood that serve as a base for plaster; usually nailed at regular intervals to studs or to boards in walls and ceilings. Until the early 19th century, wood lath was hand-split from larger pieces of wood; later, such strips were usually cut with circular saws, providing slats of relatively uniform width and thickness. Wood lath as a base for plaster in new construction has now been replaced in most countries by expanded-metal lath.