Low E

Low Emissivity

The increasing cost of energy, sustainability of natural resources and the reduction of harmful CO2 emissions are at the forefront of political and environmental concerns today.


The construction industry is constantly being challenged to significantly reduce the future energy requirement in buildings, the greatest energy loss being that of heat through the external envelope of a building.


In comparison with other construction materials, state-of-the-art Dual Seal Low E insulating glass units provide excellent thermal insulation together with high transparency. This architectural benefit provides almost unlimited creative options in building design.

Dual Seal low emissivity units provide the highest level of thermal insulation possible in standard double glazed insulating glass units. A U-value of 1.0 W/m²K borders on the limit of thermal insulation that is physically possible in a double glazing unit.

The neutral colour and the high light transmission provide a pleasant indoor environment with natural daylight.

In a triple glazed unit with two panes of Low E ‘One’ on surfaces 3 & 5, some of the lowest U values can be achieved, as low as 0.4 W/m2K.

Dual Seal low emissivity units promote well-being: The increased insulation results in a higher internal glass surface temperature, reducing the occurrence of condensation and uncomfortable cold spots and down-draughts close to the window.