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Formerly known as Asbestos Workers, Union Heat and Frost Insulators apply and remove thermal insulation to pipes, ducts, tanks, boilers, and other equipment requiring control of temperatures. Heat and Frost Insulators are responsible for the manufacture, fabrication, maintenance and all other aspects of heat or frost insulation. They work with fiberglass, rubber, calcium silicate and urethane.


Length60 months
Benefits for ApprenticesMedical, dental, vision care after 3 months for
worker, after 12 months for dependent. Vacation
and pension after 24 months.
Minimum age18
Education prerequisitesHigh School Graduate, GED or equivalent
10 units of algebra or geometry with
passing grade
Physical requirementsApprentices must be able to perform the essential
functions of the trade. For example, apprentices lift
and carry heavy objects; wear full coveralls and safety
clothing; work in high and/or low temperature
conditions; work in confi ned spaces as well as in
surroundings of noise, dust and humidity.
Most jobs require drug testing.
Additional requirementsValid drivers license and
reliable transportation
Drug testing required on most job sites
Written or oral entry examsWritten Exam
Subjects studied by ApprenticesLabor History, Math
Theory of Insulation
Properties & Use of All Types Of Insulation
Tool Usage & Safety
Beginning & Advance Layout
Leeds, OSHA 10 & 30
Pad Development
3e-Plus Energy Evaluation
Foreman & Supervision
Blue Print Reading
Application of Insulation & Finishes

Contact: Heat & Frost Insulators JATC 3801 Park Rd. Benicia, Ca. 94510 Bill Hodges, Coordinator.

Applications: Applications are taken on the second Monday in January, April, July, and October from 9:00 am – 2:00 pm, or at KC Insulation, 1895 Donald Street, Unit B Reno, Nevada on the 2nd Monday of each month from 9am-3pm

How do new apprentices get their first job? Applicants are placed on a list. When new apprentices are needed, applicants are taken Additional Information Heat & Frost Insulators & Asbestos Workers website Primary Occupation Mechanical Insulator