The International Association of Heat and Frost Insulators and Allied Workers (HFIAW), also known as Insulators Local 51 in Louisville, is a prominent trade union representing skilled insulators in the United States and Canada.
Specializing in Mechanical Insulation, Firestopping, Asbestos Lead Mitigation, Sound Attenuation, and Specialty Fabrication, the union ensures its members are trained to deliver high-quality services to meet various industry needs.
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