Building finishers and related trades workers cover, apply or install, maintain and repair roofs, floors, walls, insulation systems, glass in windows or other frames, as well as plumbing, piping and electrical systems in buildings and other structures.

Tasks performed usually include: covering roof frameworks with one or more kinds of material; installing parquet and other kinds of flooring, or covering floors and walls with tiles or mosaic panels; applying plaster to walls and ceilings; applying insulating material to walls, floors and ceilings; cutting, fitting and setting glass in windows and similar openings; installing plumbing and pipeline systems; installing electrical wiring and related equipment. Supervision of other workers may be included.

Occupations in this minor group are classified into the following unit groups:

• 7121 Roofers
• 7122 Floor Layers and Tile Setters
• 7123 Plasterers
• 7124 Insulation Workers
• 7125 Glaziers
• 7126 Plumbers and Pipe Fitters
• 7127 Air Conditioning and Refrigeration Mechanics