Smooth out lumps in drywall to keep construction on schedule.
Blows insulating material into spaces within walls, floors, and ceilings, using hose attached to blower, to insulate buildings or railway cars: Inserts nozzle of hose through opening into spaces to be filled. Signals INSULATION-POWER-UNIT TENDER to start blower. Turns valve to regulate insulation flow from hose nozzle, and moves hose to distribute insulating material evenly. Climbs ladder or erects scaffold to reach working position. Seals insulation access holes of railway car with wooden bungs or metal caps, using hammer and punch. May insulate walls by covering them with sheets of insulating material, using nails or lacing wire.