Xtreme™ - Supreme solar & thermal control
Xtreme™ Low E - double glazing
The all-round performer, keeps your home comfortable year round, warmer in winter plus solar control to keep you cooler in summer.
Great for large sunny windows, or when you want to limit potential overheating
Up to 61% better heat retention than standard double glazing
Reduces solar heat by up to 48% compared to standard double glazing, making it perfect for homes where overheating may be an issue
Lets in 74% of visible light, enabling 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.)
Xtreme™ 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 | 1.6 | 74% | 41% | 1.80 | 0.58 |
4-10-4 | 1.4 | 74% | 40% | 1.85 | 0.58 |
4-12-4 | 1.2 | 74% | 40% | 1.85 | 0.58 |
4-14-4 | 1.1 | 74% | 40% | 1.85 | 0.58 |
4-16-4 | 1.0 | 74% | 40% | 1.85 | 0.58 |
4-18-4 | 1.1 | 74% | 40% | 1.85 | 0.58 |
View technical data for our double glazing range here.
Xtreme™ Performance
Xtreme™ 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)
74%
Solar Factor (SF)
40%
Fading Protection (Tdw-ISO)
0.58
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 TRANMISSION (VLT)
Higher means more natural light
FADING PROTECTION (TDW-ISO)
Lower means better fading protection
COLOUR HUE
Gallery - Xtreme™
