Ultratherm xtreme


waitangi museum/te kongahu


hb architecture


february 2015


waitangi treaty grounds


Project Description

The new Museum of Waitangi/Te Kongahu is a building of national significance and the latest addition to the built environment within the treaty Grounds at Waitangi.  The building is designed to house some of the nations most treasured taonga in a purpose built museum environment.


The Rooflogic Ultratherm Xtreme system was specified for the museum roof.  The system needed to be highly durable and weather-tight and to also contribute to a stable internal environment.

This system incorporated:

  • RL Base Deck (structural steel base deck.)

  • RL vapour Control Layer.

  • RL PIR Board (80mm.)

  • RL Roof Board HD.

  • Derbigum Membrane.

SYSTEM benefits

  • Efficient installation of RL Base deck provided early close-in.

  • Thermally efficient to maintain consistent internal temperature.

  • Full hygrothermal analysis done to ensure that there was no condensation risk.

  • Verified levels of acoustic performance to meet project brief.

  • Fully engineered structural scheme complete with PS1 supplied by Rooflogic.

  • Premium quality Derbigum membrane provides durable long term solution.  Proven to be the most stable formulation when exposed to UV of any modified bitumen membrane.

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39 Hautonga Street, Petone, Wellington

Ph. 04 475 7663

Rooflogic Limited