 The roofs of the north chapel and north aisle are of slate, and those of the rest of the church of lead.The church consists of a chancel, north and south chapels, nave, north and south aisles, west tower, and north and south porches.The whole of the church and the tower have embattled parapets, and the tower is surmounted by a leaden spire on an octagonal drum on top of which is a gold weathervane in the shape of a cockerel.