How much heat does the LightCatcher lose in the winter? Does it have a sweltering greenhouse effect in the summer like traditional skylights?

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Contrary to traditional skylights, the LightCatcher doesn’t cause temperature differences thanks to two stagnate layers of air. Our specific three-layer structure ensures this. Under the polycarbonate dome lies a polycarbonate lens, which pushes the incoming light through a light shaft, while creating a stagnate layer of air in the dome. The light shaft is closed on the bottom by a second polycarbonate lens, this time with a flat or pyramidal shape to spread the compressed light throughout the building optimally, once again creating a  stagnate layer of air. The LightCatcher provides optimal thermal insulation: no extra heating expenses in the winter, no expensive heat that escapes, and in the summer no sweltering heat that sneaks in and no extra air conditioning costs. Its U-value is 1,2 on a very limited surface.

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