The roof is a complex structure composed of six steeply pitched overlapping segments and a seventh covering the sanctuary. The staggered segments are joined to each other from eaves to ridge by stained leaded glass set parallel to the front elevation. The segments of the roof are clad in copper tiles now oxidised green. The roof structure makes a dramatic mark on the skyline, as did the great medieval churches. On the interior, the segments of the roof are clad in stained afrimosa timber.

Some say the church is like the Sydney Opera House, others that is more like a mighty fish with its mouth open. From outer space it probably looks like a Boeing 707 on the runway. It is one of the prominent landmarks in the area, which can be seen for miles around and is especially noted for its steep copper roof.