When a balustrade triggers consent in Wellington, what NZBC F4 actually requires, and how producer statements work.
If a fall is possible from one metre or more, NZBC F4 applies. Whether the work itself needs a building consent depends on the scope. New deck. Almost always. Replacement balustrade as a like for like. Often exempt under Schedule 1, but the F4 performance criteria still apply.
A barrier height of at least one metre on residential decks, 1.1 metres on stair landings. Spacing that prevents a 100mm sphere from passing through. Loadings that resist a horizontal force at the top rail. The numbers are precise and a good fabricator will design to them by default.
For balustrades that are designed to a specific engineering brief, council often asks for a PS1 from the engineer and a PS3 from the installer. We work with engineers who understand stainless and aluminium balustrade design and we issue PS3 documentation on our own work.
Shop drawings, material schedule, design statement against F4, engineer PS1 if structural design has been done, and the installer PS3 once the work is complete. Together that package usually clears inspection without delay.
An unconsented balustrade can show up on a LIM and become a problem at sale. Doing the paperwork properly the first time costs very little and saves a great deal later.
Need a fabricator who handles the compliance side properly. Talk to The Fabricator about stainless steel balustrades or aluminium powder-coated balustrades, both quoted consent ready.
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