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Technical Document NTD02 Assessment of thermal performance of out-of-plane rooflights (Withdrawn)
Publication Year
2010
Document Status
Withdrawn, cited in regs
Abstract
Details how to calculate Ud-values for the developed area of the rooflight to be compliant with limits stated in Building Regulations. Includes details of how the surface area of out-of-plane rooflights should be measured but not how to calculate heat loss through a sample, or the calculation of true U-value.
Document History
Superseded by NTD 2.1 Assessment of thermal performance of out of plane rooflights (NARM, 2022). NARM Technical Document NTD 2 (2010).
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
