After the studs were installed they were covered with hand-planed pine boards that featured a narrow scratch bead on one edge.  Fragments of the original partition boards, which are much more refined then the riven clapboards found on the partition in the ca. 1764 cellar, were found reused by the duPont’s carpenters in the ca. 1901 additions during the Restoration’s deconstruction phase.   Similar boards were often used to sheath partitions  in the 18th century and examples can be found surviving in many houses of the period.  However, by the late 18th century in houses of the gentry class, such as Montpelier, this type of board was used almost exclusively to cover partitions in utilitarian spaces like a cellar instead of the main living spaces.