The Institute of Lighting Professionals (ILP) is a UK based professional organisation which publishes a series of Lighting Guides, aimed at educating lighting designers and non-specialists in lighting related matters.
Guidance Note 9, or GN09 for short, is a concise document aimed at homeowners and developers wishing to create suitable outdoor lighting schemes without causing environmental impact. It deals with subjects which are also covered in Guidance Note 1, but in a brisker format. GN09 outlines some of the potential problems associated with outdoor lighting in residential settings, including skyglow, light spill onto windows and glare. The document provides advice on how to avoid these issues and encourages the use of timers, sensors, and dimming. It also gives practical recommendations on what to look for when purchasing lights for the home and garden.
For planning consultants and architects, GN09 provides a useful reference when developing residential schemes, helping ensure domestic lighting proposals are practical, considerate and aligned with current best practice for both residents and the wider environment.
