Rooflighting Best Practice Quickguide
The calculation of Ud-values, and U-values for flat, 'in-plane' and 'out-of-plane' rooflights; to meet Building Regulation requirements.
To be read alongside Technical Document NTD02 Assessment of thermal performance of out-of-plane rooflights (NARM, 2010).
Developing standards and codes of practice in the provision of natural light in built environments, NARM represents UK designers and manufacturers of rooflights from polycarbonate domes and barrel vaults, to GRP factory rooflights and structural glass skylights and atria.
NBS has produced specification systems and information products for construction industry professionals for more than 40 years. The National Building Specification is the recognised UK national standard and is used by over 5,000 organisations. NBS is part of RIBA Enterprises Ltd.
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