For the purpose of the Washington state public works law, chapter 39.12 RCW, insulation applicators install all the insulation material in floors, walls, sound rated partitions and ceilings.

They also install insulation materials on roofs, when the material must be measured, cut and nailed to the inside or outside of an existing roofing system.

The insulation materials installed by insulation applicators include, but are not limited to:

• Batt insulation, semi-rigid and rigid insulation, blown spray and foam-type insulation, regardless of method of installation, attachment or connection.

• All the cleanup required in connection with insulation applicators.