Summary

1.1 This approved document is one of four approved documents that give guidance on how to comply with the energy efficiency requirements of the Building Regulations: Approved Document L1A: Conservation of fuel and power in new dwellings Approved Document L1B: Conservation of fuel and power in existing dwellings Approved Document L2A: Conservation of fuel and power in new buildings other than dwellings Approved Document L2B: Conservation of fuel and power in existing buildings other than dwellings The approved documents are supported by the: Domestic Building Services Compliance Guide Non-Domestic Building Services Compliance Guide 1.2 This approved document contains the following sections: Section 1 sets out the relevant legal requirements and provides an overview of the steps to demonstrate compliance. Section 2 sets out the considerations that apply to demonstrating that the design of the building will meet the energy efficiency requirements. Section 3 sets out the considerations that apply when demonstrating that the design has been appropriately translated into actual construction performance. Section 4 describes the information that should be provided to occupiers to help them achieve reasonable standards of energy efficiency in practice. Section 5 provides a pointer to some useful information on different design approaches to meeting the energy efficiency requirements Appendix A: Key terms and abbreviations Appendix B: Guidance on the types of building work covered by this approved document Appendix C: Reporting evidence of compliance Appendix D: Documents referred to Appendix E: Standards referred to Energy performance certificates 1.3 Regulation 7A of the Energy Performance of Buildings (England and Wales) Regulations 2012 requires that when a dwelling is erected the person carrying out the work must give an energy performance certificate to the owner of the building and a notice to the building control body (BCB) that a certificate has been given including the reference number under which the certificate has been See also the Energy Performance of Buildings (England and Wales) Regulations 2012 (SI 2012/3118) at www.legislation.gov.uk and detailed guidance on energy performance certificates at www.gov.uk

  1. Section 1.1
    1. Section 1.2
      1. Section 1.3

        Section 1.1

        1.1 This approved document is one of four approved documents that give guidance on how to comply with the energy efficiency requirements of the Building Regulations: Approved Document L1A: Conservation of fuel and power in new dwellings Approved Document L1B: Conservation of fuel and power in existing dwellings Approved Document L2A: Conservation of fuel and power in new buildings other than dwellings Approved Document L2B: Conservation of fuel and power in existing buildings other than dwellings The approved documents are supported by the: Domestic Building Services Compliance Guide Non-Domestic Building Services Compliance Guide  

        Section 1.2

        1.2 This approved document contains the following sections: Section 1 sets out the relevant legal requirements and provides an overview of the steps to demonstrate compliance. Section 2 sets out the considerations that apply to demonstrating that the design of the building will meet the energy efficiency requirements. Section 3 sets out the considerations that apply when demonstrating that the design has been appropriately translated into actual construction performance. Section 4 describes the information that should be provided to occupiers to help them achieve reasonable standards of energy efficiency in practice. Section 5 provides a pointer to some useful information on different design approaches to meeting the energy efficiency requirements Appendix A: Key terms and abbreviations Appendix B: Guidance on the types of building work covered by this approved document Appendix C: Reporting evidence of compliance Appendix D: Documents referred to Appendix E: Standards referred to Energy performance certificates  

        Section 1.3

        1.3 Regulation 7A of the Energy Performance of Buildings (England and Wales) Regulations 2012 requires that when a dwelling is erected the person carrying out the work must give an energy performance certificate to the owner of the building and a notice to the building control body (BCB) that a certificate has been given including the reference number under which the certificate has been See also the Energy Performance of Buildings (England and Wales) Regulations 2012 (SI 2012/3118) at www.legislation.gov.uk and detailed guidance on energy performance certificates at www.gov.uk

        • Table 1 Fuel factor Table 1 Fuel factor
        • Table 1 Fuel factor Table 1 Fuel factor
        • Table 2 Limiting fabric parameters Table 2 Limiting fabric parameters
        • Table 3 U-values for party walls Table 3 U-values for party walls
        • Table 4 Summary of concurrent notional Table 4 Summary of concurrent notional dwelling specification
        • Table 4 Summary of concurrent notional dwelling specification (continued) Table 4 Summary of concurrent notional dwelling specification (continued)
        • Parameter Parameter