Open window with double glazing

Classic™ – Basic double glazing

Classic™ – Basic double glazing

Classic double glazing

The basic upgrade from single glazing, providing more than double the heat retention in your home

  • For warmth and those who want clear glass and ample natural light in your home.

  • Up to 52% better heat retention than single glazing, making your home warmer and drier in winter.

  • Clear glass - providing 81% natural light when compared to single glazing which lets in 90% of natural light.

Classic double glazing - Performance data

Make-up mm

Heat loss

Visibility

Heat gain

Fading

Ug
(Glass U Value)
Lower is better

VLT (Visible light transmission)
Higher means more natural light

SF
(Solar factor)
Lower means less solar heat

Tdw-ISO (Damage weighted transmission)
Lower means less fading

4-12-4

2.8

81%

77%

0.74

4-10-4

2.9

81%

77%

0.74

4-8-4

3.1

81%

77%

0.74

View our technical double glazing range brochure below

Technical brochure - Double glazing

Our sustainability journey

Our double glazing Low E glass is Declare Label Certified (Red List Free), which means they contain no toxic ingredients.

View our journey

Classic™ compared to single glazing

Keeping my home warmer

Up to 52% better heat retention

Brighter and lighter home

Lets in 81% of natural light

Classic™ performance

This data is based on a 4-12-4 make-up
Terminology defined:
U Value: Lower is better
SF: Lower means less solar heat
VLT: Higher means more natural light
Tdw-ISO: Lower means less fading

U value (based on 4-12-4)

2.8

Solar Factor (SF)

77%

Visible light transmission (VLT)

81%

Fading protection (Tdw-ISO)

0.74

Modern home exterior with double windows and doors

Need more options?

Our double glazing range can be combined with laminate, tint or obscured glass. Whatever your requirements are, we can customise and tailor a solution for your home.

Get a free quote

Winter promo is on now use promo code WINTER2024! We have two deals - you choose! Get a discount or a bonus performance glass upgrade. Plus all accepted quotes from now until the 31st Aug go into the draw for a chance to win a $5,000 Travel voucher. Request a free quote here. Terms apply.