We completed a pilot project in downtown Vancouver at the iconic Harbour Centre building to demonstrate the energy-efficiency an noise reduction benefits of the Taiga window inserts.

About

Harbour Center is a 27 story tower built in 1977, around the historic 1928 Spencer Building, a cornerstone of the Vancouver skyline. Today the building serves wide range of commercial tenants and is managed by the Polaris group.  

The Retrofit

The TwinGlaze Taiga inserts were installed over the original single-pane windows on the 10th floor. Our team installed the Taiga inserts in several hours, without removing the old windows or any changes to the buildings exterior.

Before

Installation

Results

Early testing has shown strong performance improvements:

Improves window performance by 300%.
‍(As verified by independent ASTM C1199 tests.)

Payback of 4-9 years based on energy savings.
‍(Payback in under 2 years with grants and incentives.)

Up to 10x cheaper than replacing windows.‍

Cut heating loss by 75% and heating costs by 30%.

Reduces drafts and dampens sounds.

Leaves no trace when removed.

Humidity testing.

Noise-transfer testing.

After

Why this matters

This pilot is collecting real-world performance and cost data in British Columbia. It demonstrates that meaningful performance gains can be achieved without major construction or window replacement. Interior inserts provide a faster, lower cost path to better efficiency and comfort. They also help building owners move toward emissions compliance and ESG targets without large-scale retrofit projects.