First built in 1844, Heuston Station still stands as an impressive entrance to Ireland’s capital city. Originally designed by John Benjamin McNeil, the roof of the station’s Train Hall needed replacing.

The new roof design makes efficient use of modern materials and technology to provide a brighter space with a low maintenance, energy efficient internal environment. The design brief required the retention and conservation of the Train Hall's primary structure, which is of cast iron columns and beams. In order to achieve this, extensive tests and investigations were carried out on the structure in order to identify components that were in need of repair.

New steel trusses required to support the roof were utilised, with the same profile and spacing as the originals, in order to achieve a lightweight, elegant and slender structure. Equally careful consideration was given to the detail of the trusses nodal and end connections.

A large proportion of the roof covering was glazed to stream natural daylight down onto the station platforms. Engine exhaust fumes are naturally ventilated by way of a continuous open-sided “top hat” section at the apex of each line of trusses and through the shed's end and side openings.