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Building regulations: Technical Guidance Document L

To satisfy the requirements of the European Directive on Energy Performance of Buildings (EPBD) new improved energy performance standards have been set for all new buildings in the Republic of Ireland

The Technical Guidance Document to accompany the revised Buildings Regulations Part L (TGD L, 2008 Edition) was published on the Department of the Environment, Heritage and Local Government’s website in January 2008. (As a result, the current Building Regulations 2007for dwellings is to be amended to readBuilding Regulations 2008)

The principal aims of the new Part L is for a 40% reduction in energy demand and carbon dioxide emissions associated with heating, domestic hot water and lighting. This document details how conformance to the amended regulation requirements can be demonstrated.

The  EPBD directive  contains a range of provisions aimed at improving energy performance of residential and non-residential buildings, both new-build and existing.

As part of the Directive, a Building Energy Rating (BER) certificate, effectively an energy label, will also be required for buildings constructed, sold or rented.

In Ireland it is being implemented on a phased basis by Sustainable Energy Ireland (sei),                          

These phases are as follows:

  •  New dwellings: The regulations apply to all new dwellings for which planning permission was applied for on or after 1st January 2007. All new homes (even when not for sale) must have a BER certificate before they are occupied  
    Calculation Methodology: (DEAP) The Dwelling Energy Assessment Procedure (DEAP) is the ROI official procedure for calculating and assessing the energy performance of dwellings. The methodology is designed to calculate and create Building Energy Rating (BER) certificates and to check compliance with Part L of the Building Regulations. 
  • New Non-Domestic Buildings: The regulations apply to all new non-domestic buildings for which planning permission was applied for on or after 1st July 2008. Transitional BER exemptions will apply to new non- domestic buildings for which planning permission is applied on or before 30th June 2008 provided the new non-domestic buildings involved are substantially completed by 30th June 2010. Calculation Methodology: (NEAP) The Non Domestic Energy Assessment Procedure (NEAP) is the methodology for demonstrating compliance with specific aspects of Part L. NEAP is also used to generate the Building Energy Rating (BER) and advisory report for new and existing non domestic buildings.
  • Existing Buildings: (dwellings and other buildings)  When offered for sale or letting on or after 1st January 2009
  • Large Public Service Buildings: A large public building occupied on or after 1st January 2009  secure and display a BER certificate in a prominent place clearly visible to the public 
 
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