Windows

Double Glazing Sliding Doors

Upgrade your existing sliding doors to double glazing without replacing the frames or tracks. We install a custom-fabricated, high-performance sealed unit, transforming your sliding doors into a thermal and acoustic barrier that performs as well as any new double glazed door on the market.

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Double Glazing Cost Calculator

$1,800 to $3,100

Per Set

Per set, depending on size. Price above includes Economy ThermoTech™ glass as standard - see other glass options or use our double glazing cost calculator for an approximate price for your project.

  • Double Glazed unit, fully installed within existing frame
  • Beading replaced with new hardwood beads
  • Sliding door rehung retaining operation
  • Removal and recycling of old glass
  • Servicing and weather sealing are available as additional extras

Glass Options

Most popular

Economy ThermoTech™

$285 /sqm

U-VALUE
2.5

SHGC / VLT
0.71 / 78

WARRANTY
10 yr

  • Two sheets 4mm glass
  • 12mm argon gap
  • Doubles energy efficiency
  • Australian made
Most popular

LightBridge / Optitherm™

$395 /sqm

U-VALUE
1.4

SHGC / VLT
0.59 / 79

WARRANTY
10 yr

  • Toughened 4mm glass
  • Argon gap
  • Low-E coating
  • Grade A safety glass
Best for noise

LightBridge Next / Optitherm Hush™

$455 /sqm

U-VALUE
1.4

ACOUSTIC
RW38

WARRANTY
10 yr

  • 6.5mm VLam Hush layer
  • Thermal spacer + argon
  • UV protection (<1% trans)
  • Impact-resistant laminate
Best for heritage

Ultimate Performance VIG

$895 /sqm

U-VALUE
0.4

THICKNESS
8.3mm

WARRANTY
15 yr

  • Vacuum insulated glass
  • Titanium seal, 0.3mm gap
  • Reduces heat loss 93%
  • Grade A safety glass

Other door styles

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Folding Doors

From $1,800

View pricing
frenchdoors322x200

French Doors

From $1,700

View pricing
sash window

Front Doors

From $700

View pricing
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