 The ground floor includes a barrel vaulted entrance passageway and a porters ' lodge , the latter 5 @.@ 3 by 3 metres ( 17 @.@ 4 by 9 @.@ 8 ft ) in size . The first and second floors both formed single rooms , approximately 7 @.@ 6 by 5 @.@ 2 metres ( 25 by 17 ft ) across internally , and would have been used as domestic chambers for the officials of the priory . They had fireplaces , garderobes and small bed chambers in the walls . The roof is predominantly built of timbers dating from between 1512 to 1536 ; the current structure was probably built around 1540 , possibly when the building was converted for use as a vicarage . 
