The staircase features square balusters and a square newel. A group of balusters supporting handrail, coping, or ornamental detail are known as a balustrade. The balustrades with 642 balusters are made of artificial concrete. The only ornamentation is found in the railings, which sometimes contained balusters. To the eastern wall is a timber stair with turned balusters and newels. The building has original staircases with twisted balusters. The pulpit is decorated with marquetry and fretwork and has a staircase with twisted balusters. The railing was enlarged and the turgid balusters were added in the 17th century. A stone staircase, with iron balusters, is at the east end. Lateral doors are flanked by false windows with balusters. Within the portico is a second-story balcony with simple square balusters. It is made of a yellow "giallo antico" marble frame with dark red "portasanta" balusters. The pulpit is a basic with a hexagonal screen of wooden balusters. However, some high level ironstone blocks and limestone balusters have weathered badly. The balusters form an arcade in Jacobean fashion.