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Low iron glass is extra-clear (so called due to its low iron oxide content) and provides a higher degree of transparency and light transmission when compared to normal float glass.

Low iron glass can be manufactured with cut outs and holes and be CNC or water jet shaped to drawings or rigid templates and UV Bonded (subject to manufacturing tolerances). Gx Glass produces glass to British and European standards strength and flexibility in accordance with BS EN 12150 and safety up to BS EN 12600 Class 1.

The glazing is available in a range of options dependent on required application, contact manufacturer for more information.


Size (maximum):

2240 x 3200 mm.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-65-40/310 Annealed glass
45-65-40/335 Thermally toughened glass

NBS Specification

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This product is associated with the following NBS clauses:

Product specification

An important note about specifying



Gx Glass


+44 (0)1233 642220

Product reference

Low Iron Glass


[4 mm]
10 kg/m², U-value: 5.8 W/m²K, not suitable for curtain walling applications.
[6 mm]
15 kg/m², U-value: 5.7 W/m²K.
[8 mm]
20 kg/m², U-value: 5.7 W/m²K.
[10 mm]
25 kg/m²,U-value: 5.6 W/m²K.
[12 mm]
30 kg/m²,U-value: 5.5 W/m²K.
[15 mm]
37.5 kg/m², U-value: 5.5 W/m²K, not suitable for general glazing applications.
[19 mm]
47.5 kg/m², U-value: 5.3 W/m²K.


[Back painted]
Insert requirements.
Insert requirements.


Polished - Standard.


[Safety backing]

Manufacturer details

Units 1 & 2,
Brunswick Road,
Cobbs Wood Industrial Estate,
Kent, TN23 1EL
Tel +44 (0)1233 642220
Fax +44 (0)1233 641475
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