This technology update discusses the risks associated with the maintenance painting practice known as overcoating. Factors affecting overcoating application@ service and costs are discussed. This document is intended to serve as a resource for facility owners and others charged with developing and implementing maintenance painting programs. Overcoating is one of several maintenance painting options. This document is not intended to provide a detailed description or comparison of the relative merit and cost considerations of overcoating versus other maintenance painting options. For a more complete and detailed discussion of maintenance painting practices@ the reader should refer to SSPC-PA Guide 5@ Guide to Maintenance Painting Programs.