• Proficiency in filling cavities between walls, floors and ceilings in buildings
• Knowledge of insulating material, such as mineral wool, shredded cork or asbestos
• Proficiency in getting blower started to release compressed air which blows insulation material through hose
• Knowledge of inserting hose nozzle into openings in floors, walls or ceilings
• Well-versed with carrying hose nozzle to working position