For the purpose of the Washington state public works law, chapter 39.12 RCW, drywall finishers perform all the preparatory work and finishing work involved in covering interior walls and ceilings with decorative or protective finish materials.

The work includes, but is not limited to:

• Handling of all materials after the initial unloading at the job site, including the distribution to the points of application.

• Erecting, moving and dismantling of all scaffolding.

• All preparatory work of taping, sealing, finishing and sanding of joints between plasterboard or other wallboard.

• Spotting, caulking, pointing and sealing of cracks and holes in walls and ceilings.

• Applying protective coverings prior to the application of the finish materials.

• Spackling of surfaces and application of texture finishes where adhesive materials are used.

• Applying all primers, sealers, decorative or protective finish materials, regardless of the method of application.

• Installing metal moulding at corners instead of sealant and tape.

• Removing all drywall material scraps and all cleaning work, including scraping of floors.