Last edited 05 Nov 2018

Daylit space

According to the Non-domestic building services compliance guide, 2013 edition, published by HM Government, the term ‘daylit space’ refers to:

Any space:

The normal light transmittance of the glazing should be at least 70%; if the light transmittance is below 70%, the glazing area should be increased proportionately for the space to be defined as daylit.

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