Heat & Frost Insulators Local 50

939 Goodale Blvd. #210, Columbus OH 43212
Phone: 614-221-7177
Fax: 614-221-8669
Business Manager: Dan Poteet


International Association of Heat and Frost Insulators and Allied Workers (Insulators)

The International Association of Heat and Frost Insulators and Allied Workers has persevered since 1903, a testament to our founders’ commitment to the dignity, skills and well-being of our membership. For more than 115 years our union has endured, through good times and bad, in peacetime and at war, through economic depression and prosperity, in favor and out of favor with governments and politicians. Through it all we not only have survived; we have flourished.

Today’s Union Insulator is skilled in the installation of mechanical insulation, fire stopping, asbestos and lead mitigation or abatement, sound attenuation and specialty fabrications required in custom mechanical insulation installations for commercial, industrial, medical, bio-technical, governmental and educational facilities among other customer types. This work is installed by our professional mechanical insulators that have achieved journeyman status in the union through a multi-year classroom and 1,600 hour per year on-the-job training program second to none in North America.

9602 Martin Luther King Highway
Lanham, MD 20706
Phone: 301-731-9101


Website history from Local 50

Our members specialize in commercial and industrial insulation, while also handling fire stopping, metal lagging and asbestos, mold and lead remediation. Our expertise allows us to install and repair systems in buildings that save energy, reduce greenhouse emissions and protect the safety of all inhabitants.

Our vast jurisdiction extends from the eastern to western borders of the state of Ohio and two counties in Indiana as a result of a 2005 merger between Local 44 in Columbus and Local 79 in Dayton. We currently maintain our union hall and training center in Columbus and Dayton, respectively.

Phone: (614) 221-7171
Fax: (614) 221-7172
939 Goodale Blvd., Suite 202
Columbus, OH 43212