In the late 20th century, the ceiling of the cellar, on its upper side in the Service Hall, was covered in its entirety in steel mesh and concrete to act as further support for the vaulted ceiling and a supporting floor for the room itself. A problem that arose from the insertion of this concrete floor however, was the fact that it had raised the floor in this room above the rest of the house ground floor level by several inches, an issue that needed to be addressed by removing all of the concrete.