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Welcome to Heat & Frost Insulators Local Union No. 6


Headquartered in Dorchester, Insulators Local 6 of Boston is a local of the International Association of Heat and Frost Insulators and Allied Workers International. Local 6 tradespeople specialize in constructing and maintaining industrial firestopping systems, hazardous waste remediation, and mechanical insulation. Local 6 is proud to be one of the first locals organized under the International Association.   

Over the years, Local 6 has fought for better working conditions, better benefits and better wages for its members.  We have established funds to help with medical expenses, training, building, vacations and retirement. Local 6 is committed to the mission and goal of making its members' lives richer, fuller and more rewarding. 

Insulators Local No. 6
303 Freeport St.     Dorchester, MA.02122
Phone: 617-436-4666      Fax: 617-265-9887

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