7. Solar protection

The discrepancy between performance on a sunny day and that observed on an overcast one calls for the use of "corrective" elements known as "solar protection".

Let's take a look at the "risks" associated with natural light, which can be addressed by these sun protection elements.

Glare hazard

This is particularly a concern when the sun is low on the horizon, i.e. in winter, or at the beginning and end of the day. The risk of glare arises from excessive differences in luminance values in the field of vision.

However, the notion of discomfort due to glare is conditioned by the nature of the activity and the type of space concerned.
Risk of overheating

This is particularly a concern in mid-season and during...

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Bibliography

(1) - PAULE (B.), FLOURENTZOS (F.), BAUER (M.), PANTET (S.) - How current trend in the design of façades influence the functional quality of indoor spaces - Proceedings of the CISBAT'15 Conference, Lausanne, Switzerland (2015).
(2) - PAULE (B.), PANTET (S.),...

Standards and norms

« L'éclairage naturel des bâtiments » - EN 17037 - 2018
RT 2005, TH-CE 2005, Version 7.3. Arrêté du 24 mai 2006 relatif aux caractéristiques thermiques des bâtiments nouveaux et des parties nouvelles des bâtiments, NOR : SOCU 0610625A, Journal Officiel de la République CSTB – Technical certification standards for commercial buildings – Démarche HQE® " Office and education – Part III: QEB, January 2005. - EN 12464-1...