Frequently Asked Questions
How does it work?
There are no resistance wires in electrically heated glass. The function is based on features of regular low-e (heat radiation) glass whose metal oxide coating is semi-conductive and heats up like a conventional resistor when electric current is fed into it. The electrodes carrying the current are positioned in the edge of the sealed unit, thus concealing them from sight.
Can a building be heated only with heated glass?
Yes - if the FGUK Heated Glass surface area is large enough. All installations are calculated by our specialist engineers on a project by project basis. The flexibility of the product means heated mirrors can be used in areas with small glazing areas, for instance in bathrooms. If necessary attractive laminated FGUK Heated Glass radiators can also be used in large spaces.
Can FGUK Heated Glass be used in specialist glass installations?
Yes EGLAS can be combined with virtually any glass in the Saint Gobain product library giving scope for its use in almost any glazing application.
What is the operating voltage of the electric glass element?
The Electric glass elements are aspired to group so several panes can be connected in a series (from mains voltage 230/240 V). If an adequate series cannot be created or there is a particular bespoke requirement, a transformer is specified
U-Values
All FGUK Heated Glass is manufactured to the highest industry standards. Double Glazed units achieve a 1.1 U-Value; Triple Glazed units can achieve a 0.65 U-Value, surpassing requirements for both UK and EU building standards. Further details are available on request.
How much power is required and what is a suitable surface temperature?
Typically in smaller homes surface temperatures of 23-28°C can be reached with 150 W/m2 of power. Even 100 W/m2 would be adequate to eliminate draughts and cold spots. If the required power input is greater, sensors limit surface temperatures.
Warranty and support
FGUK Heated Glass comes with a minimum 10 year St Gobain Warranty/guarantee.