The House of the Seven Gables is undertaking a project to replace the roof on the Turner-Ingersoll Mansion. The roof was replaced in 2005, but the tumbled-steel nails that were used have deteriorated due to a chemical reaction with the fire resistance underlay. The nails that were used were considered industry standard at the time, and other historic houses have had similar issues. The roof is a vital part of the outer “shell” of the house and vigilant preservation is necessary to protect the structure. David M. Hart, AIA is the preservation architect on the project with Finch & Rose consulting. Napco, Inc. based out of Gloucester is the contractor that will complete the roof replacement. The project is funded in part thanks to grants from the Massachusetts Preservation Projects Fund and the Salem Community Preservation Act.