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Siena Framed Glass Balustrade

Featuring a unique 3-sided frame, the Siena’s full-pane glass infill spans from post to post in recessed channels which effectively block out the wind.  The Sienna is one of our most popular Framed Glass styles and features a simple and clean look with no lower rail.  Get the best of both worlds with a top rail to lean on while still maximising the view.

Key Features
  • Designed for standard heights up to 1200mm from finished deck level
  • Wide range of finish options — can be powder coated or anodised in all standard New Zealand colours
  • Standard specifications available for top or side fixing to both timber and concrete substrates
  • Specifications for non-standard situations may be provided by Unex upon request
  • Screws together with minimal, if any, welds required
  • Made from 6000 series extruded aluminium alloys
  • Installed only by Authorised Fabricators, available nationwide
  • Post option available for side-fixed situations to conceal screw fixings
  • Designed for wind speeds up to 64m/s (ULS)
  • Range of five top rails to choose from
  • Glass infill to be Grade A Safety Toughened with a minimum thickness of 8mm
NZ Made
NZ Made
NZ-Owned Business
NZ-Owned Business
Scope of Use

The Siena Framed Glass style by Unex can be used for both external and internal applications, including decks, balconies, stairways and landings, mezzanine floors, pedestrian gates, and pool fences.

Unex balustrades are designed to and comply with 'A', 'B', 'E' and 'C3' loadings of AS/NZS 1170.1:2002 for residential applications, office, and work areas, as well as areas for moving people without obstacles.

A wide range of fixing options are available to fix to the top and sides of both timber and concrete substrates.  Unex's DKG2 gutter bracket system is designed for membrane decks with gutters and waterproofing considerations. Site-specific specifications may also be provided upon request for those non-standard situations.

Limitations on Use

UNnex designs for residential situations, office, and work areas, as well as for areas with moving people, however, cannot be used for 'C1/C2', 'C5' or 'D' Loadings. In these applications, Unexrecommends the use of its Extreme Barriers range of styles which has been specifically developed for these higher loadings in crowd and public situations.  

The standard Unex top rails comply with the handrail profile requirements of D1/AS1 for 'Private' and 'Common' stairways (with the exception of the #ARC and #ART top rails), but do not comply for 'Accessible Stairways or Ramps'.

Where a top rail of a balustrade on a stairway does not comply with D1/AS1, Unex recommends an auxiliary complying handrail is mounted to the side of the balustrade posts.

For certain buildings — such as architectural sky rises (over 3 stories high), light commercial or high pollution areas — a higher grade powder coat powder must be specified. 

NZS 3604 Wind Zone Extra High suitable
Extra High Wind Zone
NZS 3604 Wind Zone High suitable
High Wind Zone
NZS 3604 Wind Zone Medium suitable
Medium Wind Zone
NZS 3604 Wind Zone Very High suitable
Very High WInd Zone
NZS 3604 Wind Zone Very High suitable
Very High Wind Zone
Statement of Building Code Compliance

UNEX has designed its range of balustrade styles to comply with the B1, B2, E2, and F4 requirements of the NZ Building Code and are suitable for occupancy types 'A', 'B', 'E' and 'C3' in accordance with AS/NZS 1170. 

Producer Statements for all standard specifications can be created online in the registered area of the Unex website. 

For non-standard situations not covered by Unex's specifications, a site-specific PS1 and specification may be prepared by Unex upon request.

In-Service History

Unex specialises in designing and manufacturing architectural balustrade systems throughout New Zealand having done so since 1981.  

All vertical baluster styles have been incorporated in Unex’s range from the beginning, as a traditional and cost-effective style. A number of enhancements have been made throughout this time — in particular during 2008 when the building code changed to incorporate AS/NZS1170 which meant that the required balustrades loads effectively doubled and again in 2016 when the building code stipulated glass styles required interlinking top rails. Unex then redesigned a number of their balustrade extrusions to ensure these loads and safety precautions were adequately met.

B1 Structure compliant
B2 Durability compliant
E2 External Moisture compliant
External Moisture
F2 Hazardous Building Materials compliant
Hazardous Building Materials
F4 Safety from Falling compliant
Safety from Falling
F9 Restricting Access to Residential Pools compliant
Restricting Access to Residential Pools
UNEX Promotional Catalogue


NZ Building Code of Compliance
Producer Statement (PS1)
Framed Glass Installation Guide
UNEX Loading Classification
CAD/PDF Details
Fixing Specs
Assembly Specification w/VRT Top Rail



Assembly Specification w/ART Top Rail



Assembly Specification w/PRR Top Rail



Assembly Specification w/VRE Top Rail



Assembly Specification w/VRR Top Rail



Dry Timber, Side Fixing, Screws, 90mm Edge Joist


Dry Timber, Side Fixing, Bolts


Dry Timber, DKG2 Fixing, Screws, 90mm Edge Joist


Dry Timber, Top Fixing, 65mm CRS


Dry Timber, Top Fixing, 90mm CRS


Wet Timber, Side Fixing, Screws, 90mm Edge Joist


Wet Timber, Side Fixing, Screws, 135mm Edge Joist


Wet Timber, Side Fixing, Bolts


Wet Timber, Top Fixing, 65mm CRS


Wet Timber, Top Fixing, 90mm CRS


Concrete, DKG2 Fixing, Expoxy-set Anchors


Concrete, Side Fixing, Epoxy-set Anchors


Concrete, Top Fixing, Epoxy-set Anchors, 65mm CRS


Concrete, Top Fixing, Epoxy-set Anchors, 90mm CRS


Concrete, Post Built-into


Masonry, Side Fixing, Epoxy-set Anchors


Masonry, Top Fixing, Epoxy-set Anchors, 65mm CRS


Masonry, Top Fixing, Epoxy-set Anchors, 90mm CRS


Steel, Side Fixing, Bolts


Steel, Top Fixing, Inline Bolts


Steel, Top Fixing, Inline Bolts


Steel, Top Fixing, Bolts, 65mm CRS


Style Specification w/VRT Top Rail



Style Specification w/ART Top Rail



Style Specification w/PRR Top Rail



Style Specification w/VRE Top Rail



Style Specification w/VRR Top Rail



Siena Style (Side Fixed)



Siena Style (Top Fixed)



UNEX delivers exceptional, high-performing balustrade solutions which keep Kiwis safe everywhere where they live, work and play.

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