Last edited 17 Aug 2022

Light transmittance

Part O 2021 (England), Technical Guidance, July 2022 – Final Draft, published on the Future Homes Hub, defines light transmittance as: ‘a property of glazing which describes the proportion of visible light transmitted through to inside. Tinted glazing tends to have lower light transmittance.’

See also:Visual light transmittance VLT

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