Solar Shading And Antiglare Measures

Glass roofs require effective precautions against overheating to be in place all year round.

Solar control and anti-glare measures and blinds can be differentiated into external, integral and internal systems. They may be rigid or adjustable_Fig. 10. External shading devices are advantageous as they keep the absorbed solar energy separate from the internal space. An ideal solution is to have louvres that semi- or fully automatically track the daily and annual path of the sun and can be adjusted to direct light in specific ways. External solar protection can also be combined with integrated measures such as solar control glazing. Exposed to the weather, external shading devices are complex and require regular maintenance. [5.1/9]

Internal solar shading is significantly less effective. Heat may build up between the internal solar control devices and the glazing, which leads to increased surface temperatures and additional radiated heat if there are no ventilation openings. Therefore internal shading should only be used for inclined roofs facing east or west. However internal devices such as roller blinds can perform as anti-glare and room acoustic attenuating elements_Fig. 15. [5.1/10]

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