AIRTIGHTNESS IMPROVED BY 99% AT MICROSOFT BUILDING, VIADUCT HARBOUR, AUCKLAND

Rajeev Nedumaran • December 18, 2022

Achieving 99% reduction in duct leakage at Microsoft, Auckland.

Bright and early on Saturday, December 10, myself and my tech Al arrived onsite at the Microsoft Building in Auckland's Viaduct Harbour. We were met by Ajay of McAlpine Hussmann; our first job with him and I certainly hope there are more to follow. The prep work done by Ajay and his team was exemplary and led to our fastest/smoothest/best result to date: a 99% reduction in duct leakage. You're never going to achieve a hundred percent, this is absolutely the closest you can get and we're thrilled to say so!


The riser was 18m in height and around 780mm by 720mm. Our injection point was from level 6 which is the top storey of offices . Three phase power came from the plant room which is on the roof, one level up. As with many of our jobs, accessing the duct from the exterior was impossible without cutting through the firewall. Aeroseal is the perfect application for this scenario as once again demonstrated by our result. We selected SMACNA as the standard by which to measure ourselves hence the numbers being imperial. Initial leakage was 366cfm @ 450Pa and when we left the leakage was 4.5cfm @450Pa.


This is our fourth job for McAlpine, thank you again Talat for putting us forward

PROJECT OVERVIEW


BUILDING

The Microsoft Office at Viaduct Harbour, Auckland, New Zealand


AEROSEAL CONTRACTORS

LIMS Aeroseal


CONTRACT ENGINEER

McAlpine Hussmann


GOAL

To improve air tightness and get the system approved


BEFORE AEROSEAL

366cfm @ 450Pa


AFTER AEROSEAL

4.5cfm  @450Pa.


RESULTS

Achieved 99% improvement in air tightness


A behind the scenes look at what goes on at a LIMS-Aeroseal job. Apologies for the background noise! It does become noisy with the Aeroseal generating that fine mist that went on to block 99% of dust leakage at Microsoft! Awesome job by the Aeroseal Team.

To Learn More About Improving The Comfort, Indoor Air Quality, and Energy Efficiency Of Your Building Call 0226759426 or Email info@aeroseal.nz

A living room filled with furniture and a television.

Simple Ways To Save Energy at Home or Office

April 26, 2025
Consider using LIMS Aeroseal to ensure your ducts are sealed efficiently from the inside. This simple action can lead to substantial improvements in energy efficiency and comfort in your home or office. Contact a provider today to learn more about how LIMS Aeroseal can help you save energy and protect the environment.
A man wearing a hard hat is sitting in front of a laptop computer.

5 Reasons to Seal Your Ducts from the Inside with Aeroseal

By Rajeev Nedumaran • April 26, 2025
Aeroseal is a sustainable choice for duct sealing. By reducing energy consumption, you are not only saving money but also minimizing your carbon footprint. This eco-friendly approach contributes to a healthier planet, making it a responsible choice for environmentally-conscious properties.

Aeroseal Success at The Auckland International Airport

April 18, 2025
Completing WP2 at Auckland International Airport was a milestone for LIMS Aeroseal. Not only did we help Econair Services Limited meet industry standards for ductwork airtightness, but we also demonstrated the scalability and reliability of Aeroseal technology in high-profile projects.
More Posts