For the purpose of the Washington state public works law, chapter 39.12 RCW, tinting and coating installers apply film, tints, and coatings to transparent surfaces. The work includes, but is not limited to:

• The application of any film, tints, and coatings to the interior or exterior of existing windows, glazed doors, partitions, shop fronts, etc. This includes special dyes, UV absorbers and metal coatings. This work also includes tints and coatings applied to reduce heat gain and glare, and low-emittance coatings to improve both heating and cooling performance.