Author's Note: A portion of this month's column discusses touching up existing paint after a gypsum wallboard repair. The information is presented so that the drywall contractor will have a better understanding of how paint may work, in the hope that the knowledge may be of assistance on a future project. Presenting the information is not meant to suggest that the Gypsum Association is broadening its scope of expertise, and it does not in any way intend to encourage the reader to use us as a resource regarding the proper application of paint. For information on paint application and painting techniques, readers should contact the technical services department of the paint manufacturer.