Cuba St Precinct – 100 Cuba Street

Related Systems: Ultratherm Xtreme
Architect: Athfield Architects
Installer: SWP Commercial
Project Date: September 2020
Location: Wellington

The Cuba Street office and retail component of the Cuba Street Precinct spans three iconic neighbouring buildings all of which have been strengthened to greater than 100% NBS and refurbished, and are now known as 100 Cuba Street. The upgrade retained and incorporated an existing heritage façade with a striking new structure. The Cuba Precinct is integral to the Cuba Quarter renaissance. 

Requiring the roof to act as a structural diaphragm the roof structure was constructed from 21mm plywood.  The blending of a heritage and completely new structure created some unique challenges in terms of roof design and detailing. And because of the buildings location the wind pressures for the roof peaked at around 7.0kPa requiring specific direction from RoofLogic’s structural engineer.


RoofLogic’s Ultratherm Xtreme system was specified for the project, incorporating:

  • RL Vapour Control Layer (installed over plywood substrate.)
  • RL PIR Board (80mm.)
  • RL Roof Board.
  • Fibertite membrane.
  • RL Walkway

There were also several plant room areas where the same system was installed over concrete roof slabs.

SYSTEM benefits
  • Engineered to manage extreme wind loads.
  • Verified thermal and hygrothermal performance.
  • Extreme trafficability and chemical resistance in plant areas.
  • Fibertite can accommodate complex details and junctions with the curtain wall cladding.