Insulators Local 6 represents specialists in mechanical insulation, firestopping, and hazardous waste remediation. Our members receive world-class training, DOL certification, and industry-leading wages and benefits. For more than 100 years, we’ve set the bar for certification and professional standards across the industry, delivering excellent results, on-time and on-budget.

Through the Mechanical Insulation Solutions Network, our members and contractor partners help end users save money, reduce energy consumption, and avoid costly future mediations.

We’re proud to be the leading choice of colleges, hospitals, municipalities, biotechnology companies, commercial and residential developers, and more across Massachusetts, Rhode Island, New Hampshire, Maine, parts of Vermont and parts of Connecticut.