Auckland International Airport Transport Hub Roof

Situated on the western end of the new hub is an office building, the roof of which required complete and durable water-tightness. As part of the roofing membrane system build-up, additional insulation properties and lightweight design would allow the building to be constructed without the excessive weight and loading of conventional construction materials.

Of utmost importance to Auckland International Airport Ltd was the ability to maintain ‘business as usual’ with as little disruption as possible. This meant keeping a tight perimeter on construction activity and precision delivery schedules - both to ground and roof level.Weather at the time of construction (May to September) was traditionally inclement, so the mechanically-fixed aspect of the Sarnafil warm roof membrane system surmounted this challenge when other methods required dry application conditions.

Roofing

Sika® Sarnafil mechanically fixed sheet membrane system.

• Sika® Sarnafil S-327 20 L membrane
• Sarnavap®-5800 SA self-adhered vapour control layer
• Sika® EJOT EcoTec telescopic fastener system
• Sarnafil®-130 S-felt separation layer
• Sarnatherm® EPS insulation, tapered to falls
• Sarnacol®-808/Sarnacol®-2170 adhesives