Corporation & Office

Premium office space with an elliptical plan and raked roof plane


Project Details

  • Project reference
    85 Castlereagh St, Sydney
  • Builder
    Westfield D & CArchitect
  • John Wardle Architects
  • Scope
    Custom Asymmetric Fabric Blinds
    Custom Venetian Blinds
    LONWorks Control System
  • Size
    32 Floors


This Skyscraper located in Sydney’s CBD consists of thirty two floors of premium office space with an irregular ellipse and a raked roof plane.   Shade Factor was contracted to provide the shading solutions and control system.  Solutions for asymmetric shapes are not so common in the blind industry so this project required new engineering to produce a variety of new blind types to meet the clients brief.


Custom engineering & prototyping

Some important factors Shade Factor had to consider when providing sun-shading for these areas include:

  • Design of a solution for venetian blinds under the glass roof to operate in a reclined orientation
  • Design of a louvre solution to match the venetian blinds but within an irregular shape
  • Design of 3, 4 and 5 sided retractable textile sunshading operating from base up and top down
  • External Venetian Blind designed to work under glass

    Prototype view from roof

    Warema 80mm rolled edge slat engineered to work in reclined plane
  • Bottom up blinds

    Prototyping retractable textile blinds

    Irregular blinds designed to operate bottom-up and top-down
  • Shading Model

    Shading Model

    Created to simulate shading of surrounding buildings and feed in to control system

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