Current
Core Supplement
Further specific information in support of the 2006 versions of Approved Documents L1A, L2A, L1B and L2B on aspects of pipework and ductwork, hot water, heating and chilled systems.
Also known as "HVAC guidance for achieving compliance with Part L of the Building Regulations" and "HVAC compliance guide." Amendment - December 2006: Inclusion of publication date of standard used to calculate heat transfer data (BS EN ISO 12241:1998). Amendment - February 2008: Correction to indicative thicknesses of insulation given in Table 6.2.5. The maximum permissible heat gain is unchanged and remains as required by CLG document "Non-domestic heating, cooling and ventilation compliance guide, 1st edition, May 2006."
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The Thermal Insulation Manufacturers and Suppliers Association represents manufacturers and many of the suppliers and distributors in the UK thermal insulation industry.
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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