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Balustrade Flat Run
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Related Resources
Flat Run Balustrade Calculator — Baluster Spacing for Decks
Calculate baluster quantities and spacing for flat (horizontal) balustrade sections on decks, verandahs, and balconies. Compliant with Australian NCC requirements.
Frequently Asked Questions
What is a flat run balustrade?
A flat run is a horizontal section of balustrade (as opposed to a raked/angled stair section). Flat runs are found on decks, balconies, verandahs, and landings — anywhere the floor is level.
What is the maximum baluster spacing on a flat run?
Under Australian NCC, the maximum gap between balusters is 125mm (a 125mm sphere must not pass through). This is measured as clear space between balusters, not centre-to-centre.
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