Apprenticeship Application Package



Applications are available on the Second Monday of each month at the UNION OFFICE located at 3325 Hollenberg Drive, Bridgeton Missouri, 63044. The Applicant needs to appear in person to receive the application. If the application was downloaded the Applicant needs to bring the completed application in to complete the application process. No Exceptions.

Individuals receiving the APPLICATION PACKAGE shall return the COMPLETED APPLICATION, including copies of the following documents within FIFTEEN DAYS OF RECEIPT of the APPLICATION PACKAGE.

Any individual who returns the application and documents after the FIFTEEN DAYS shall be noted on the applicant log as being ineligible for consideration at this time.


  1. 18 years of age or older

  2. Copy of Birth Certificate

  3. Driver’s License (No State ID’s)

  4. Copy of High School Diploma or G.E.D.

  5. A $25.00 NON – REFUNDABLE application fee paid by Cashier’s Check or Money Order made payable to: HEAT AND FROST INSULATORS LOCAL 1 JATC

The $25.00 Application Fee will be waived for the following individuals:

  • Honorably Discharged Veterans with a DD214

  • Graduates of the STBCTC BUD Program

  • Graduates of the SWIC HCCTP


  • Applicants will be notified at a later date to be determined by the JATC regarding assessment testing. The assessment test will consist of addition, subtraction, multiplication and division of whole numbers, fractions decimals, converting fractions to decimals, decimals to fractions and word problem solving.

  • Applicants who do not meet or exceed the minimum passing score of 70% will be removed from the pool of Applicants.

  • Applicants who meet or exceed the minimum score of 70% will be placed on a list of Eligible Applicants.

  • Eligible Applicants will be notified when the JATC determines there is a need to accept Apprentices into the program for WORK KEYS ACT testing and interviews.

  • Applicants selected after the interview process will be accepted into the Apprenticeship Program.

  • All other Eligible Applicants shall remain on the Eligible List for a 2-year period.



Heat and Frost Insulators enhance internal environments to sustain optimal temperatures and make them safer for people and equipment. We insulate many items, including mechanical systems, hot and cold piping, ducts, boilers and breechings. Our work requires math knowledge and aptitude.

In addition, our work requires the ability to work off ladders or scaffolding and in hot and cold conditions. Our jurisdiction covers 72 Counties in Missouri and Illinois our contractors work demands may require travel as far as 150 miles from St. Louis, Missouri. 


Heat and Frost Insulator Apprentices receive a minimum four (4) years of training, which includes 160 hours of classroom instruction annually and a minimum of 1600 hours of on-the-job learning per year.

Classes are held bi-monthly on 4 consecutive days beginning at 7:30 a.m. and ending at 3:00 p.m. in the afternoon during the normal work week. Classes are held 10 months of the calendar year with 2 months off for the summer.

Apprentices are required to serve a Probation Period of 800 hours before they are admitted into the local union. Apprentices must complete the required number of classroom training hours, and on-the job learning hours in addition to being able to perform the work that was taught throughout the year to advance to the next level. Instruction in a variety of mechanical systems with different types of insulation and prefabrication are taught both on-the-job and in the classroom.

If you have any questions, contact a Business Representative at the Union Office between the hours of 8:00 a.m. and 4:00 p.m. at 314-291-7399 or Terry Walsh, Apprenticeship Training Coordinator between the hours of 7:00 a.m. and 3:00 p.m. at 314-291-1023.

CLICK HERE TO FILL OUT, SAVE AND PRINT THE APPLICATION (We prefer that you type the information into the application to make it easier to read.)

Heat and Frost Insulators Local 1 JATC will not discriminate against apprenticeship applicants or apprentices based on race, color, religion, national origin, sex (including pregnancy and gender identity), sexual orientation, genetic information, or because they are an individual with a disability or a person who is 40 years old or older. Heat and Frost Insulators Local 1 JATC will take affirmative action to provide equal opportunity in apprenticeship and will operate the apprenticeship program as required under Title 29 of the Code of Federal Regulations, Part 30.

Insulators Local Union No.1
3325 Hollenberg Drive
Bridgeton, MO 63044
Phone: 314 291 7399

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