Lagging

Lagging is the finishing material (such as steel, aluminum or other materials) used to cover many types of insulation, especially on large flat surfaces such as boiler walls, flues, ducts, precipitators, selective catalytic reduction systems, baghouses, wind boxes or fans. Insulation and metal lagging of mechanical system components includes flat work, round work, pressure vessels and specialty components. Also known as cladding or sheet metal, lagging ranges in thickness from .016-inch to .063-inch and usually does not include a vapor barrier.

Opportunities in this field include:

  • Custom fabricator
  • Energy management
  • Field installer
  • Field foreman

Our Careers

Take a look at some of the job areas SMART is proud to represent!

  • Architectural Sheet Metal
  • Bus Operators & Mechanics
  • CAD, Drafting & Detailing
  • Freight Rail
  • HVAC Installation
  • HVAC Shop/Fabrication
  • Lagging
  • Passenger Rail
  • Production / Manufacturing
  • Rail Mechanical
  • Residential HVAC
  • Service and Refrigeration
  • Roofing
  • Shipyard
  • Sign Fabrication & Installation
  • Indoor Air Quality and Energy Efficiency (TAB)
  • Transit & Commuter Rail
  • Industrial and Shop Welding
  • Yardmaster

Become a SMART Member

Take the next step on your journey towards a rewarding career. Learn how you can become a SMART member.

Member Voices

Hear about the union directly from SMART members themselves.

Meet Carol Jones

Longtime Amtrak conductor Carol Jones — who is also a local chairperson with SMART-TD Local 1361 out of New Haven, Conn. — shares her story of coming up in the transportation industry and working as a pioneering woman in the passenger rail sector.

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