Wall and Ceiling Liners (Plasterers) install and finish internal and external wall and ceiling systems in residential, commercial and industrial buildings. Their work includes determining plasterboard layouts, installing insulation and vapour barriers, and measuring, cutting and fixing plasterboard panels to walls, ceilings and battens. They also prepare and fix corner beads, cornices and other plaster fittings, cover joins and fastenings, and apply, level and finish plaster, cement and render to create smooth or decorative surfaces. Wall and Ceiling Liners may also apply acoustic, insulating and fire-rating systems, ensuring structures meet performance, safety and aesthetic requirements.