On May 1, 2014 the Daughters of the American Revolution (DAR) awarded a preservation grant to the Preservation Society to help fund repairs to the upper deck terrace at the main entrance to the sanctuary.
DAR-1The project involved partial demolition, stabilization, waterproofing and resurfacing of the upper deck area which serves as the entry to the main sanctuary. Stone planters surrounding the terrace were also re-pointed and sealed in order to insure waterproofing.

Work commenced on May 18, 2015. On July 30, 2015 a final seal coat containing non slip additive was applied to the deck surface. As a result of this work, the upper terrace is now fully sealed, restored and waterproofed. Drain channels have been repaired to mitigate collection of water on the surface. A nonskid surface provides added safety for visitors. The completion of this project has secured and waterproofed the room below the terrace which will enable the Preservation Society to finish and outfit this room for storage, administrative, office and exhibition space.

On October 18, 2015, there was a ribbon cutting ceremony honoring the DAR and Summer and David Fetterman who provided the necessary matching funds. The ceremony drew a sizeable attendance including DAR officials and representatives of local, state and federal government who presented declarations, proclamations and best wishes.