BREEAM Visual comfort Daylighting
 Aim and benefits
Natural light has been always present in people's lives and is a source not probable to cease in the near future. However, the daylight levels humans are exposed to indoors nowadays are changing because of the diversification of buildings, social activities and a higher need of being indoors. Although it is possible to function without the presence of daylight, studies have proven that natural light is significantly important for the health of the occupants. It can affect humans psychologically and physiologically while it may also improve the mood, reduce stress levels, lower the fatigue and eyestrain. In addition, daylight can improve the performance of students and employees, while a view out of the room has been affirmed to positively affect the well being of occupants.
Daylight is also a way to minimise the electricity used for artificial lighting and can furthermore influence the heating and cooling loads. In office buildings for example, artificial lighting can account up to 45% of the total electrical load. Since daylight is the most affordable energy saving technique with the shortest payback time when compared to others, it makes it one of the easiest and cheapest energy efficient measures to implement. Therefore, to achieve the highest possible savings in assets and energy, full advantage of the natural source of light needs to be taken.
 When to consider
This issue should be considered for all types of buildings as the value it gives to the occupants is very important for the health, mental wellbeing and productivity. An extra focus should be given to daylighting when it considers buildings mostly used in daytime, like office or educational buildings.
 Step by step guidance
 Questions to ask while seeking compliance
 Tips and best practice
 Typical evidence
BRE Global does not endorse any of the content posted and use of the content will not guarantee the meeting of certification criteria.
--Stefani Erika Papadaki 16:45, 20 Nov 2017 (BST)
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