lathing board

lathing board

[′lath·iŋ ‚bȯrd] (building construction) backup strip

backup strip

A piece of wood at the corner of a ceiling and side wall; serves as the mounting for the ends of the gypsum-board panels.

backup strip, lathing board

A wood strip which is fixed at the corner of a partition or wall to provide a nailing surface for ends of lath.