There is no one-size-fits-all answer since every property has distinct requirements. To determine the ideal amount of lumen, the following key factors are relevant.

• The purpose of the flood light

• The size of the area that needs to be covered

• The positioning of the light and distance from the surface

• The beam angle of the flood light

• The general brightness of the surrounding

You can find some application examples below. Please note that these are abstract examples; the amount of light needed for ideal illumination depends on many factors including the general brightness of the surrounding. Please always consult with a lighting professional if you are not sure which lumen output is needed to illuminate the specific area properly.

Outdoor security lighting for a driveway (approx. 4m x 4m, mounting height of the flood light is 3m)

• 1 flood light with around 500 - 800 lumens

Basic outdoor lighting for a courtyard (approx. 7m x 7m, mounting height of the flood lights is 5m)

• 2 flood lights with around 1,000 lumens

Please keep in mind to choose and position your flood lights carefully so that you do not disturb your neighbours or cause unnecessary light pollution. According to the Department for Environment, Food & Rural Affairs (covered by the Environmental Protection Act 1990), unreasonable lighting could be classed as a ‘statutory nuisance’ if your lights:

• unreasonably and substantially interfere with the use or enjoyment of a home or other premises

• injure health or be likely to injure health

For large commercial properties such as car parks and other large open spaces, flood lights with a higher lumens output are usually needed to illuminate the area adequately. Our experts and light planners from Lights.co.uk Professional are happy to advise you on how to illuminate business premises securely.