How are double glazed windows made?

Double glazed windows are one of the great innovations in building sustainability and security. Widely attributed as an invention of Victorian-era Scotland, double glazing (plus triple, and now even quadruple glazing) is characterised by multiple glass panes with a hermetically sealed layer of air or gas.

Most people know 

How double glazing is made

Double glazed windows have three layers sealed together in a single unit: an external glass pane, air gap, and internal glass pane.

Joins are closed with sealant and the window clad in a weather-resistant airtight uPVC frame. Energy – heat and sound – cannot pass through these layers as efficiently as single pane windows.

External pane

The first line of defence against UV rays, heat, cold air, rain, wind and noise. We use a special Low-E (low emissivity) coating on the inside of the external pane to limit UV exposure by 75% and reflect warmth, keeping your home at a comfortable temperature all year.

Air gap

The unique element to double glazed windows. Air or argon gas is trapped between the two glass panes to create an insulating layer with the additional benefit of acting as a sound barrier. We use an air layer to offer affordable, high performing double glazed windows that outperform Australian standards. We also pack the base of the frame with a moisture-absorbing desiccant to prevent condensation.

Internal pane

Finally, a clear internal pane completes the hermetic air seal and provides unobstructed views. This pane, combined with the air gap, helps trap air inside the house to reduce reliance on heating and cooling appliances.

Double glazed windows only offer the full range of benefits when they are made to measure and installed millimetre-perfect to create a full seal.

What to look for in double glazed windows

Glass type

Gap size

Frame material

Locking mechanism

ARCO Double Glazing manufacture and install 

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