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Daylight

Just As Important As The Air We Breathe


Sunlight cheers us up – surely that’s something we’ve all experienced. But even without the sun itself, natural daylight makes a noticeable difference to our wellbeing. Scientific studies have shown that human health and wellbeing are influenced by daylight far more than previously thought: Light is an elixir of life. But as with so many things in life, it’s a question of getting the right amount. Solar protective glass and shading systems provide protection from the negative consequences of too much exposure to the sun.


Natural sunlight reduces ‘sick building syndrome’

Previous ‘lighting engineering’ mainly focused on optimising artificial lighting. The aim was to eliminate the dynamics of daylight as far as possible. But we now know that our need for light was underestimated. Artificial lighting in the workplace is one of the most common causes of what is known as ‘sick building syndrome’; natural daylight, on the other hand, has a positive effect on wellbeing, even when it brings with it less desirable aspects such as additional heat and glare.


The new standard for daylight: DIN EN 17037

The European standard DIN EN 17037 requires much more daylight in rooms than before. The calculation is complex, because it is based on the actual illumination of the room. But there is one simple rule of thumb, namely the ratio of window area to floor area, that gives us an approximate answer: With a window area 20 to 25 percent the size of the floor area, the requirements of the daylight standard are met in the vast majority of cases. That is roughly twice as much window area as that provided in previous building regulations.


Larger window to floor ratios can benefit from heating glass


Maximum daylight thanks to minimal frame

In planning practice, this means more attention will have to be paid to the amount of incident daylight in all future considerations. Windows, doors, façades and fixed glazing consisting of heavy-duty steel profile systems help to optimise this, as the minimal area occupied by the frame maximises the area of glass. This creates bright and inviting rooms that promote health and wellbeing.


Tested steel profile systems for light structures

Jansen provides steel profile systems that make it possible to manufacture light structures in a reliable and economical manner. Windows, doors, façades and fixed glazing made up of Jansen steel profile systems have been tested and approved with regard to tightness against driving rain, air permeability and wind load resistance. With CE labelling according to EN 14351-1, the same degree of security can be provided for special window shapes, such as bay windows or skylights. In façade construction, components measuring up to twelve square metres can be produced without any problems in terms of heat and fire protection.


With special thanks and attribution to JANSEN

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