Plasterers apply finish, and maintain and restore plaster or similar materials, on interior and exterior walls, ceilings and building partitions to produce plain or decorative surfaces. Drywall installers and finishers install and finish drywall sheets and various types of ceiling systems. Lathers install support framework for ceiling systems, interior and exterior walls and building partitions.

This group performs some or all of the following duties:
Plasterers
Clean and prepare surfaces
Mix plaster ingredients in trough to desired consistency
Apply, level and smooth coats of plaster using trowels, floats, brushes and spraying equipment
Trowel or spray coats of stucco over exteriors of buildings to form weatherproof surfaces
Finish corners and angles and create decorative designs in finish coat, if required
Cure freshly plastered surfaces
Mould and install ornamental plaster panels, cornices and trim
Spray acoustic materials or texture finish over walls and ceilings.
Drywall installers and finishers
Measure, cut and fit drywall sheets for installation on walls and ceilings
Position and secure sheets to metal or wooden studs or joists
Cut and install metal corner beads to protect exterior corners
Fill joints, nail indentations, holes and cracks with joint compound using trowel and broad knife
Tape over joints using taping machine and embed tape in compound
Smooth out excess compound and allow coat to dry
Apply successive coats of compound and sand seams and joints
Fabricate and install suspended metal ceiling grids and place in panels to form acoustical and coffered ceilings.
Lathers
Prepare wall and ceiling layouts
Install metal stud framing and furring for interior drywall or plaster walls and ceilings, using hand and power tools
Attach metal or gypsum lath to studs or furring using nails, screws, clips or wire ties
Cut openings in lath for heating and ventilation piping, ducts and electrical outlets
Install corner beads and wire mesh around beams to which plaster is to be applied
May install acoustic tile, hangers for suspended ceilings and metal studs for composition wallboard or lath.