Other tools NBS offers a range of tools for specification and collaboration National BIM Library The most trusted BIM Library in the UK, certified to the internationally-recognised NBS BIM Object Standard Uniclass 2015 A dynamic and unified classification system for the construction industry covering all sectors Construction Information Service (CIS) A comprehensive online collection of construction related standards, regulations, technical advice and articles Plug-ins NBS provides a range of tools to help connect your CAD model to your specification model
Platform Resources Support Events About TheNBS.com Manufacturers Uniclass 2015 Get in touch

Platform

NBS Chorus Features and pricing Book a demonstration Sign in to NBS Chorus Other tools National BIM Library Uniclass 2015 Construction Information Service (CIS) Plug-ins

Resources

Knowledge Sample Specification Case studies Authors

Support

Training Downloads and updates

About

About NBS Newsroom

Platform

NBS Chorus Features and pricing Book a demonstration Sign in to NBS Chorus Other tools National BIM Library Uniclass 2015 Construction Information Service (CIS) Plug-ins

Resources

Knowledge Sample Specification Case studies Authors

Support

Training Downloads and updates

About

About NBS Newsroom

Building Regulations 2010: Approved Documents L2B Conservation of fuel and power - existing buildings other than dwellings (2014 edition incorporating 2016 amendments) (For use in Wales) (Withdrawn)

Publication Year

2014

Document Status

Withdrawn

Abstract

Provides guidance for complying with energy efficiency requirements in existing buildings other than dwellings and covers: extensions, conversions, consequential improvements, renovations, changes of use, provision, extension, alteration or replacement of building services, work to windows and doors, conservatories and porches, indoor swimming pools, optional alternative approaches with more design flexibility, buildings exempt from the energy efficiency requirements, notifying building control and information for the occupier.

Document History

Superseded by Approved Document L - conservation of fuel and power. Volume 2 - buildings other than dwellings (Welsh Government, 2022). This 2014 edition will come into effect 31 July 2014 and superseded: DCLG Conservation of fuel and power in existing buildings other than dwellings (2010 edition incorporating further 2010 and 2011 amendments). Main changes in the 2014 edition: This approved document, Approved Document L2B: Conservation of fuel and power in existing buildings other than dwellings supports the energy efficiency requirements of the Building Regulations. Regulation 2(1) of the Building Regulations defines the energy efficiency requirements as the requirements of regulations 23, 25A, 25B, 26, 26A, 26B, 28, 29 and 40 and Part L of schedule 1. It takes effect on 31 July 2014 and is for use in Wales. The 2010 edition will continue to apply to work begun before 31 July 2014, or to work subject to a building notice, full plans application or initial notice submitted before 31 July 2014. The main changes in the approved document are that: regulation 28 (consequential improvements to energy performance) can require additional energy efficiency measures when undertaking applicable building work. The previous 1000m² threshold has been removed for extensions and where fixed heating is provided into a previously unheated space. The guidance on consequential improvements is provided in Section 4. U values for new thermal elements have been revised, and the U value threshold for retained and refurbished thermal elements has been removed. Regulation 21(4) has been modified such that if a conservatory or porch has any fixed heating system, whether an individual room heater or a heating system extended into the conservatory or porch from elsewhere in the building, then the requirements of Part L will now apply. Section 9 of this document provides guidance where these buildings are not exempt. The document is in a new style format. Main changes made by the 2016 amendments: relate to the following alterations: withdrawal of Regulations 29 to 33 of the Building Regulations 2010, with a replacement Regulation 7A being included in the Energy Performance of Buildings (England and Wales) Regulations 2012; additionally there have been alterations to the wording in Regulations 24, 25, 26, 26A, 26B, 27A and 27B of the Building Regulations 2010. There are no technical changes.

Publisher Information

Welsh Government

The Welsh Government is the devolved government for Wales. They publish a number of strategies, policies, consultation papers, circulars, leaflets and posters. Previously known as Welsh Assembly Government.

Cathays Park
Cardiff
WG
UK

Website: https://gov.wales/
Email: customerhelp@gov.wales
Tel: 0300 0604400