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This Standard Recommendation has been developed by the Department of Environment, Community & Local Government [DECLG], the Department of Communications, Energy and Natural Resources [DCENR], Sustainable Energy Authority of Ireland [SEAI] and NSAI in conjunction with the Building Research Establishment [BRE] to provide guidance for the energy retrofit of dwellings.

The energy upgrade or retrofit of a dwelling will reduce energy consumption and costs, increase occupant comfort and reduce harmful greenhouse gas emissions. It also makes an important contribution to meeting climate change targets as 25 % of energy use occurs in dwellings. National and EU Regulations and Directives promote energy efficiency in existing buildings.

These include:

  • The Recast Energy Performance of Buildings Directive;
  • The Energy Efficiency Directive; and
  • Part L of the Building Regulations.

The intended audience for this document are property managers, designers, specifiers and installers working on energy efficient refurbishment projects for dwellings. The technical detail provided assumes that those using the document have appropriate qualifications and experience of working on retrofit projects.


The scope of this Code of Practice (COP) addresses the energy refurbishment of fabric and services of post 1940s low-rise dwellings. The main purpose of the COP is to provide technical guidance on the design and installation of retrofit measures to improve energy efficiency while:

  • maintaining the fire safety performance of dwellings;
  • ensuring structural integrity and acoustic performance;
  • maintaining healthy internal environments;
  • controlling the movement of moisture.

This Code of Practice addresses the following points:


  • retrofit measures that are suitable for typical Irish dwellings;
  • an explanation of building science relevant to retrofit;
  • good practice for building fabric measures;
  • good practice for building services measures.


The National Standards Authority of Ireland wishes to announce the launch of a period of public enquiry from  the 8th of March 2013 until the 9th May 2013 on the following Standard Recommendation:

Full details on these draft Standards and the mechanism for submitting comments is available from
NSAI Your Standards, Your Say on the following links:

Learn more about NSAI Standards Development or for further information contact