 St Caffo 's is built of rubble masonry dressed with limestone , in an early English style ( a style of architecture used between about 1180 and 1275 , typically using narrow pointed windows and arches ) . The roof is made of slate . The tower , at the west end , has buttresses at the corners and is topped with a <unk> spire , which is a prominent local landmark . Entrance is through an arched doorway in the north side of the tower . The chancel , at the east end of the church , is smaller than the nave in both height and width ; there is a transept on the north side of the chancel . The nave has lancet windows , and there is a further lancet window on the south side of the chancel . The church 's east window is set in a pointed arch and has three lights ( sections of window separated by <unk> ) . 
