Laggers apply insulating materials, such as felt, fibreglass, polyurethane and cork, to pipes, steam generators, process vats and ducting, and secure insulation with wire, wire netting, staples, metal strapping and using welding torches.
You can work as a Lagger without formal qualifications, however, they may be useful. Some workers have Vocational Education and Training (VET) qualifications in areas such as carpentry, joinery, engineering trades or plumbing.