Assessment of thermal performance of out of plane rooflights
Technical Document NTD02.1
Document Status
Current
Supplement
Core Supplement
Series
Technical Document
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.
History
NARM Technical Document NTD 2.1 (2022).
Subjects
- Environmental issues/energy
- Rooflights
- Energy efficiency/Energy Management
- Windows and doors
- Thermal insulation
- Special subject areas
- Lighting, natural
Publisher History
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.
Information
NBS
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.
Accuris
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