Xcel™ - Maximum warmth and light
Xcel™ Low E - Double Glazing
The classic option, perfect for most kiwi homes
For maximum warmth and natural light
Up to 61%* better heat retention than standard double-glazing
Super clear - lets in 80% of visible light, enabling warm, naturally light-filled spaces
H1 compliant across all zones (subject to spacer width)
(Note: our double glazing range can be combined with laminate, tinted or obscured glass. Whatever your requirements are, we can tailor a solution for your home.)
Xcel™ Low E double glazing - performance data
Make-up mm | Heat Loss | Visibility | Heat Gain
| Fading | |
|---|---|---|---|---|---|
Ug U Value | VLT Visible Light Transmission | SF Solar Factor (g) | LSG Selectivity | Tdw-ISO Damaged | |
4-8-4 | 1.7 | 80% | 59% | 1.36 | 0.69 |
4-10-4 | 1.4 | 80% | 59% | 1.36 | 0.69 |
4-12-4 | 1.3 | 80% | 59% | 1.36 | 0.69 |
4-14-4 | 1.1 | 80% | 59% | 1.36 | 0.69 |
4-16-4 | 1.1 | 80% | 59% | 1.36 | 0.69 |
4-18-4 | 1.1 | 80% | 59% | 1.36 | 0.69 |
View our technical data for our double glazing range here.
Xcel™ Performance
Xcel™ Low E Double Glazing units have argon filled thermal spacers. The data shown is based on a make-up of 4-14-4.
U-value (based on 4-14-4)
1.1
Visible Light Transmission (VLT)
80%
Solar Factor (SF)
59%
Fading Protection (Tdw-ISO)
0.69
Compare Performance
To help you select the right double glazing glass, this table helps you assess the performance of our Low E range, compared to standard double glazing.
U VALUE (MAKE-UP OF 4-14-4)
Insulation value, lower is better
SOLAR FACTOR (SF)
Lower means less solar heat
VISUAL LIGHT TRANSMISSION (VLT)
Higher means more natural light
FADING PROTECTION (TDW-ISO)
Lower means better fading protection
COLOUR HUE
Gallery - Xcel™
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