LET THE DAYLIGHT IN

FREQUENTLY ASKED QUESTIONS

WHAT IS DAYLIGHTING?

• Daylighting is the controlled admission of natural light (direct sunlight, diffuse skylight) into building interiors through windows, transparent walls, ceilings, and skylight openings.​

WHAT ARE THE ESSENTIAL BENEFITS OF DAYLIGHT?

• The use of daylight - natural light - saves on electric energy costs, contributes to indoor well-being and health, increases property values, and results in better return on investment.

​WHAT ARE THE PRACTICAL BENEFITS OF THE 'DAYLIGHTING OF BUILDINGS' STANDARD?

• The standard considers four specific fields for daylight assessment in indoor spaces: daylight provision, exposure to sunlight, glare protection, and view out. These assessments can be used and applied globally.
• The European standard considers both quantity and quality aspects of daylight and provides exact benchmark levels, design and validation methods, and metrics for 33 European countries.

WHAT IS DAYLIGHT PROVISION?

• ' Daylight provision ' describes the amount and distribution of daylight in the interior. Achieving higher levels means that less electric light will be used in the building.

WHAT IS EXPOSURE TO SUNLIGHT?

• ' Exposure to sunlight' describes the duration of direct sunlight in the interior. It contributes to the well-being and health of occupants and is mandatory in kindergartens, homes, and hospitals.

WHAT IS GLARE PROBABILITY?

• 'Glare probability' helps create pleasant and comfortable workspaces for reading, writing, or using display devices in schools, offices, or homes.

WHAT IS VIEW OUT?

• 'View out' describes the quality of the view provided through the windows of a room, which can influence the market price of the property.