Do replacement windows in strata need to be double glazed?

The replacement of windows in a residential strata scheme typically does not require any improvements to the glazing, other than compliance with the current requirements of AS1288 [the Australian Glazing Standard], with respect to the design wind-loads and human impact considerations.

Improvements to the thermal performance of the glazing may however be necessary if development consent is required, as the replacement of windows in a residential strata scheme is typically an exempt development and therefore does not require council approval.

Should the works for whatever reason require council approval, a BASIX [building sustainability index] report will be required and this report may specify some improvements in the performance of the glazing, to meet the desired outcome in relation to thermal performance.

Measures specified to reach the thermal performance requirements may include, double or single glazing and or some form of thermally efficient glass [or both,] these solutions may also incorporate a laminated glass product.

Clear laminated glass would typically not be specified, as while it does reduce the transmittance of UV light, it however does not filter infrared light, so does nothing to enhance thermal performance.