This new type of glazing has a transparent metal oxide coating through which electricity is passed to generate a radiant heat source. Depending on the power input into the glass, this radiant heat can be used to warm a kitchen addition using infra-red radiation, to prevent condensation forming on the glass or stop snow and ice build up. 'We recommend you use at least 20% of the floor area in heated glass,' says the team at suppliers IQ Glass who can create units in single, double or triple glazing. 'The smooth radiant heat creates a uniquely comfortable temperature within the space, reducing any cold draughts near large glazed elevations.'