Close-up of double-glazed window glass

Glazing Benefits

What's Actually Inside Your Window Glass?

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.

Your First Decision

Double Glazing vs Triple Glazing

Both are vastly better than single glazing. The right choice depends on your climate zone, orientation and budget.

Double Glazing

Regular Performance

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.

  • U-value approx. 1.0–1.6 W/m²K (with Low-E + argon)
  • Significant reduction in heating and cooling costs
  • Good acoustic performance, Rw 32–38 dB typical
  • Most cost-effective upgrade from single glazing
High Performance

Triple Glazing

Passive-House Grade

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.

  • U-value from 0.6 W/m²K, passive-house standard
  • Acoustic glass option, up to 53 dB noise reduction
  • Near-zero condensation risk on interior surface
  • Maximum NatHERS star rating contribution

Inside the Unit

The Components That Make It Work

Low-E Coating

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.

Argon or Krypton Fill

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.

Warm-Edge Spacer

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

Up to 53 dB Noise Reduction

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.

Rw 34
Standard double glazed
Rw 53
Acoustic triple glazed
Quiet home interior

Not sure which glazing is right for you?

We'll assess your home's orientation, noise exposure and energy goals and recommend exactly the right specification.

Quote