McKinsey & Company is a global consulting firm with more than 90 years in operation. Its Perth team works from a heritage building in the CBD, where traffic noise was getting straight through the original windows.
The problem
Street noise was disrupting the office. One window had already been fitted with a magnetic secondary glazing panel, but it wasn’t acceptable. The window was so large that the panel moved noticeably in the heat.
What we did
We fitted secondary double-hung windows throughout the office. Secondary glazing sits inside the existing window and leaves the original heritage frames untouched. The air gap between the two panes is what does the work: the bigger the gap we can achieve, the more noise it stops.
Unlike a magnetic panel, the double-hung units are built to stay stable on large windows, and they still open for ventilation and cleaning.
The result
The McKinsey team noticed a massive difference in the street noise reaching the office, without any change to the building’s heritage frontage.
Related: Window soundproofing · Secondary glazing Perth
