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Technical Document NTD02.1 Assessment of thermal performance of out of plane rooflights
Publication Year
2022
Document Status
Current
Abstract
This document updates the 2021 version of NTD02 to reflect the changes of BR443 and the 2021 version of Approved Document L in England. Defines Ur and Urc values, based on the developed area of the rooflight, why their use rather than Uroof_opening-value is appropriate for use as the limiting value in building regulations, why they should be calculated for out-of-plane rooflights, and for rooflight-and-upstand assemblies.
Document History
NARM Technical Document NTD 2.1 (2022).
Publisher Information
National Association of Rooflight Manufacturers
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. Now known as The Rooflight Association.
43 Clare Croft
Middleton
Milton Keynes
NARM
UK
Website: http://www.narm.org.uk/
Email: info@narm.org.uk
Tel: +44 (0)161 224 7477
