The mosaic roof of the Baptistery is of exceptional interest, being a magnificent example of art adapted to the Romanesque style of architecture. Its emphasis is on space, both on the walls and domed roof.
The roof itself is composed of 150,000 pieces of glass representing Creation and symbolising Earth, Fire, and Water and overall is the hand of the Creator raised in Blessing.
The Font is fashioned out of marble taken from various parts of Ireland; its colouring is symbolic of the Sacrament of Baptism. The base is of black marble, representing sin. The columns are of red marble, representing Christ’s saving blood shed on Calvary, therefore penitence. The bowl is of white alabaster, representing new life and re-birth after the sacrament of baptism (grace).