AIR NEW ZEALAND HANGAR 4

Hangar 4 at Auckland Airport is a world-leading mass timber structure and the largest single-span timber aircraft hangar in the Southern Hemisphere.

Spanning approximately 98 metres, the building demonstrates how engineered timber can compete with steel at a truly large scale, supporting Air New Zealand’s maintenance operations for decades to come.

Constructed using more than 1,200 m³ of LVL and CLT, the prefabricated timber elements were assembled on site in large sections, with individual trusses weighing up to 38 tonnes. Designed for New Zealand conditions, the structure offers seismic resilience, reduced weight, and resistance to coastal corrosion.

CUTEK® wood oil was applied to all timber substrates at XLam’s Tidal Road facility, with approximately 3,400 litres used across the project. Protecting the timber during storage and transport was critical, but even more so on site. In an active airport environment, there is no tolerance for coatings that can crack, peel or detach. By penetrating deeply into the timber, CUTEK® eliminates that risk, providing reliable protection without forming a surface film, and establishing a long-term maintenance system from the outset.