Exploratory exposure windows are designated areas on a surface where conservators gradually remove individual layers of finishes to uncover past decorative campaigns. They are created to investigate the original visual intent of a space and help identify finish type, color, and pattern.

The scale of exposure windows is based on the size of the underlying design, the architectural details of the building, and the complexities of chemical or mechanical post-historic paint removal. Further microscopic analysis can identify exact materials and composites, informing conservation treatments and design decisions.