What is UGR and why is it important?

What is UGR and why is it important?

Short for Unified Glare Rating (UGR) is the measurement of calculating glare from luminaires. It is important to achieve the correct level of lighting for your environment to ensure employees and/or visitors have clear visibility. UGR values are based on regular patterns and fittings according to European indoor lighting recommendations EN 12464-1 standard. A lower UGR rating means low glare.

UGR Recommendations

For office lighting, we recommend a UGR level of 16 to 19, ensuring comfortable workplace illumination. For industrial environments, UGR levels of 22 to 25 are ideal. For the guidance on UGR levels, please see the table below. Anything higher than UGR>28 is considered bad practice.

What determines UGR?

There are a number of factors that determine UGR value including shape and size of space, surface brightness of the walls, ceiling, floor and large areas. It is important to choose the correct luminaire for your environment to avoid discomfort.


Goodlight LED lighting and UGR Levels

Our range of Goodlight LED Ceiling Panels offer incredible UGR levels of <19. To see the full range, visit here.