Heat and Frost Insulators


Scope of Work

Heat and frost insulators apply insulation materials to plumbing, air-handling, heating, cooling and refrigeration systems; piping equipment and pressure vessels; and walls, floors and ceilings of buildings and other structures to prevent or reduce the passage of heat, cold, sound or fire. Industrial field applies to all types of industries such as chemical process, pharmaceutical, and petrochemical. The commercial field includes hospitals, schools, and office buildings. Transportation includes the insulation of trucks, trailers, railroad cars and ships. The heat and frost insulation worker today works with many types of materials, such as fiberglass, cork,ceramic fiber and calcium silicate.


Working Conditions

The standard work week for heat and frost insulators is 40 hours (8 hours a day, 5 days a week). As with many careers in construction, there are peak periods that will require you to work overtime. The number of additional hours you work each week depends on the construction sector and region you work in, and will vary from one job to the next. If you work in maintenance, you may have to work in shifts. As a heat and frost insulator, you may work indoors or outdoors, usually with a team of other construction professionals. The job can be physically demanding – you may work on ladders or scaffolding and in confined areas.

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Heat and Frost Insulators and Allied Workers Local 25

Mike Lassen, JAC Coordinator

Joint Apprenticeship Training Committee

21353 Bridge St.

Southfield, MI  48033

(248) 352-1850

FAX (248) 352-1851


Territories Covered: Wayne County, Oakland County, Macomb County, St. Clair County and Eastern Washtenaw County.


Toledo Area Heat and Frost Insulators - Local 45 - JATC

Northwest Ohio Construction Education Center

4535 Hill Avenue

Toledo, Ohio   43615

(419) 531-5911

FAX (419) 531-4392


Territories Covered:  County of Monroe & Portions of Lenawee County


International Association of Heat & Frost Insulators & Allied Workers Local Union 47

Phillip Wilson, Training Coordinator

419 Washington square, Suite 301

Lansing, MI  48933

(517) 708-0665


Patrick Welch, Career Opportunity Consultant - (989) 799-5780 

Territories Covered: 60 Counties of Lower Michigan and Chippewa, Luce and Mackinac Counties in the Upper Peninsula


Local 47 - JATC Training Center

906 Terminal Rd.

Lansing, MI 48906


Heat and Frost Insulators & Asbestos Workers - Local 75

David Clark, Training Coordinator

St. Joe Valley Building Trades Building

1345 Northside Blvd.

South Bend, Indiana  46615

(574) 282-1650

FAX (574) 282-8032


Andrew Miller, Career Opportunity Consultant – (574) 282-1650 

Territories Covered:  Berrien and Cass Counties


Heat and Frost Insulators & Allied Workers - Local 127

33 East 3rd St.

PO Box 185

Clintonville, WI 54929-1707

715) 823-9144


Jeremy Wicke, Business Manager & Training Coordinator 

Territories Covered: Central & Western Upper Peninsula

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