Lath is attached to the framing of interior walls and used as a backing to support plaster walls and ceilings. Wet plaster is pushed through spaces between the pieces of lath to form keys. It should not be confused with lathe, which is a tool used in woodworking.
Historically, three types of lath have been used in house construction: 1) eighteenth and nineteenth century wood lath, thin strips of wood installed horizontally between major framing elements and with spaces between the strips into which plaster could be pushed; 2) metal lath, a late nineteenth century innovation whose mesh structure provided a multiplicity of small openings for keying the plaster, and 3) rock lath, or gypsum/plaster board lath, a two by four inch perforated gypsum board introduced in the early twentieth century to which plaster would be keyed.
A lintel is a horizontal beam spanning the top of a door or window.
A loggia is a recessed portico, or internal room, with pierced walls open to the elements. Italian in origin, a loggia is often a gallery or corridor at ground level (sometimes higher) along the façade of a building open to the air on one side where it is supported by columns. A loggia is accessed only from the outside, and was commonly used as a place of leisure.