Scope of Profession - Lather (Interior Systems Mechanic)

In this section,

  • “lather interior systems” means any type of framework for gypsum materials in buildings and includes the following:
    • light gauge steel stud framing;
    • load bearing steel stud wall and floor systems;
    • unitized wall systems;
    • demountable partitions;
    • suspended drywall ceilings;
    • component ceilings;
    • metal linear ceilings;
    • specialized systems;
    • drywall;
    • metal lath;
    • radiation shielding;
    • access floor systems;
    • membrane coatings;
    • thermal and acoustical systems;
    • air and vapour barriers;
  • “undertakings of the designated trade” means the following:
    • the assembly and installation of lather interior systems;
    • the cutting, shaping, bending, fastening and spot welding of metal components to build support bases for plaster, cement, fireproofing, radiation or soundproofing materials;
    • the cutting, shaping, aligning and securing of components in lather interior systems for gypsum or other products;
    • the construction of various types of walls and ceilings or other related structures and the application of exterior and interior trim of metal and other materials.

Undertakings and Activities

When practicing or otherwise carrying out work in the undertakings of the designated trade, the following are activities within the designated trade of lather (interior systems mechanic):

  • assembling and installing lather interior systems; 
  • cutting, shaping, bending, fastening and spot welding metal components to build support bases for plaster, cement, fireproofing, radiation or soundproofing materials; 
  • cutting, shaping, aligning and securing components in lather interior systems for gypsum or other products; 
  • constructing various types of walls and ceilings or other related structures and applying exterior and interior trim of metal and other materials; 
  • diagnosing and repairing any problems relating to the lather interior systems;
  • using all hand and power operated equipment required by the designated trade; 
  • using blueprints, shop drawings and specifications;
  • applying gypsum lath, metal lath and stucco wire; 
  • cutting, preparing, fastening, spot welding, fabricating or other handling of all lath materials.

Restricted Activities

The following activities, when performed within undertakings of the designated trade and by the specified classes of individuals, are restricted activities within the designated trade of lather (interior systems mechanic):

  • assembling and installing lather interior systems;
  • cutting, shaping, bending, fastening and spot welding metal components to build support bases for plaster, cement, fireproofing, radiation or soundproofing materials;
  • cutting, shaping, aligning and securing components in lather interior systems for gypsum or other products;
  • constructing various types of walls and ceilings or other related structures and applying exterior and interior trim of metal and other materials;
  • diagnosing and repairing any problems relating to the lather interior systems;
  • using all hand and power operated equipment required by the designated trade;
  • using blueprints, shop drawings and specifications;
  • applying gypsum lath, metal lath and stucco wire;
  • cutting, preparing, fastening, spot welding, fabricating or other handling of all lath materials.