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Certificate of Qualification 424A

Heat & Frost Insulator

A Heat & Frost Insulator is a skilled tradesperson who installs and maintains insulation materials on pipes, boilers, ducts, and other mechanical systems to prevent heat loss and condensation. They use a variety of tools and techniques to measure, cut, and shape insulation materials, such as fiberglass, mineral wool, and foam, and must have a good understanding of the properties of these materials. Heat & Frost Insulators work in a variety of settings, including commercial buildings, industrial facilities, and ships, and must follow strict safety regulations to prevent accidents and injuries.

Required Skills & Features

  • Strong communication, reading, numeracy, problem-solving & planning skills

  • Ability to interpret specifications and shop drawings

  • Ability to work with machinery & power tools

  • Physical fitness

Minimum Standards

  • Grade 12 Diploma preferred (Grade 10 minimum)


Local 95 delivers 3 levels of in-school technical training at their facility in Richmond Hill (north of Toronto). 6400 hours hours of on-the-job training, supplemented by three 6-week sessions of in-class technical training.

Employment Areas

  • Institutional and Commercial Construction

  • Self employed 

  • Heavy Industrial Construction

Duties & Responsibilities

  • Read and interpret specifications to choose the appropriate insulation type.

  • Apply insulation materials to plumbing, air-handling, heating, cooling, and refrigeration systems, as well as piping equipment, pressure vessels, walls, floors, and ceilings.

  • Secure insulation using spraying, blowing, taping, and other methods.

  • Measure and cut insulating materials using both hand and power tools.

  • Install vapor barriers and fire-retardant materials.


Certified Tradesperson Wage:
Approx: $47.06/Hr


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