Insulators Local 33 represents specialists in mechanical insulation and firestopping. Our members receive the highest level of training and certification through our DOL recognized apprenticeship program. Recognized as the best in the industry, our members also receive 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.
Our members, in partnership with our contractors, help end users save money, reduce energy consumption, and avoid costly future mediations. Through up to date training, our members have current knowledge in state of the art industry techniques to ensure quality and customer satisfaction.
We’re proud to be the leading choice of colleges, hospitals, municipalities, biotechnology and pharmaceutical companies, commercial and residential developers, and more across the state of Connecticut.