Glazing Benefits
The glass unit is the largest component of any window, and the biggest influence on thermal, acoustic and solar performance. Here's how to choose the right one.
Double glazing uses two glass panes separated by a sealed cavity of still air or argon gas to slow heat transfer. Triple glazing adds a third pane and a second cavity for passive-house U-values. WindowPlus double-glazed units start at Uw 1.0 W/m²K, triple-glazed from 0.6 W/m²K, compared to 5.8 W/m²K for single glazing. Acoustic laminated glass reduces street noise by up to 53 dB.
Your First Decision
Both are vastly better than single glazing. The right choice depends on your climate zone, orientation and budget.
Two panes of glass with a sealed air or gas-filled cavity between them. A dramatic improvement over single glazing, reducing heat transfer by 50% or more. The right choice for most Perth homes.
Three panes with two sealed cavities, filled with argon or krypton gas. Achieves passive-house U-values and dramatically superior acoustic performance. Ideal for street-facing rooms, near airports or for zero-energy home targets.
Inside the Unit
A microscopically thin metallic layer applied to the glass surface reflects radiant heat, keeping heat in during winter and keeping solar heat out in summer. Invisible to the eye, significant in impact.
Noble gases are denser than air and conduct heat far less efficiently. Replacing air in the sealed cavity with argon reduces heat transfer by a further 15–20%. Krypton provides even better performance in thinner cavities.
The aluminium spacer bar that separates the glass panes is a thermal weak point. Our warm-edge spacers use low-conductivity materials, eliminating the cold edge that causes condensation around the perimeter of cheaper units.
Acoustic Glass
Acoustic laminated glass uses a thin PVB (polyvinyl butyral) interlayer bonded between two glass panes. This interlayer damps sound vibrations that the glass itself would otherwise transmit, reducing noise levels dramatically compared to standard glass.
For comparison: a 10 dB reduction halves the perceived loudness. A 53 dB reduction, achievable with our triple glazed acoustic units, turns a busy street into near silence inside your home.
FAQs
We'll assess your home's orientation, noise exposure and energy goals and recommend exactly the right specification.
