This type of tile was used to form vaults and would have been used on military or official buildings in the 1st or early 2nd centuries.

There are virtually no examples of these in Britain and certainly none are known within 50 miles of Brandier.

Twenty-three examples of armchair voussoirs were found at this kiln site. Three near complete examples were found placed flat on top of recycled material just below the topsoil. They were likely deliberately placed here and were probably complete and undamaged when positioned.