Verandah Rails

Hi everyone,

My partner and I are looking to complete our verandah with Stainless wire horizontal and a Merbau Top Rail. We are wondering what the law is now for the stainless wire fitting i.e. gap required and tension required as well as the mandatory height for handrails.


Question by:
Kai Tolson's picture
Kai Tolson

Hi there,

When installing a tensioned wire balustrade on the edge of a verandah, the maximum gap should not allow a 125mm sphere to pass through.

The height needs to be a minimum of 1m on landings (such as the verandah) and 865mm on stairs and access ramps.

The tensioning of the wires is a little more complicated, as it depends on the wire diameter, lay, spacing, and distance between posts. Refer to the National Construction Code, Vol. Two, Table 'Wire Barrier Construction - Required Tension for Stainless Steel Horizontal Wires', available from:

Hope this helps with your build!

The BUILD Team



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