Insulator (Heat and Frost)

Insulators (Heat and Frost) work with different kinds of insulating materials to prevent or reduce the passage of heat, cold, vapour, moisture, sound or fire. They read and interpret drawings and specifications to determine insulation requirements, select the amount and type of insulation to be installed, and measure and cut insulating materials to the required dimensions. They then apply, install, repair and maintain insulating materials to mechanical systems, such as piping, tanks, vessels, and HVAC systems. Insulated surfaces may be finished with materials such as plastics, aluminum, galvanized steel and coated steel, stainless steel, canvas, mastics or finishing cement. Insulators (Heat and Frost) also lay out and fabricate components on-site, or remove and/or encapsulate old insulation. Removing materials such as asbestos, ceramic fibers and lead is also part of the trade. Insulators (Heat and Frost) also spray insulating materials and install fireproofing and fire stop systems. Insulators (Heat and Frost) work in commercial and indusrial settings, such as gas plants, refineries, hospitals, schools, and convention centres. 

Program Updates:

Standardized Level Exam (SLE) Updates

SLE Weighting Charts

SLE Acronyms and Formulas

Interprovincial Exam Updates

  • None

Interprovincial Exam Information

Program Information

The documents below offer detailed information specific to this program.

  • Program Profile
  • Describes the requirements for apprentices and challengers to earn certification
  • Download(PDF 155.76 KB)
  • Program Outline
  • Guidelines for delivery of technical training at ITA Recognized Training Providers
  • Download(PDF 810.95 KB)

Challenge Certification/Recognize Prior Experience

If you have significant work experience in a trade but have never been certified in Canada, you may apply to challenge the certification.


If you sponsor apprentices but have never been certified in Canada, you may request to supervise and sign-off apprentices when they are ready to be certified. Please refer to the application form on whether this trade qualifies.

  • Instructions
  • How to Apply
  • Download(PDF 171.16 KB)
  • Application Form
  • Personal information and exams scheduling information (for challenge option)
  • Download(PDF 178.62 KB)
  • Employer Declaration
  • Document of relevant work experience
  • Download(PDF 87.2 KB)
  • Statutory Declaration
  • Attestation for self-employment/work experience when employer cannot be contacted
  • Download(PDF 445.03 KB)