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Scope and Application of Technical Booklet F2
NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
This Technical Booklet, which takes effect on 30th June 2022, is one of a series that has been prepared by the Department of Finance (the Department) for the purpose of providing practical guidance wi
non-domesticenergyApplicable Building Regulations
Regulations 39, 40, 41, 42, 43, 43A, 43B and 47NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
The guidance contained in this Technical Booklet relates only to the requirements of regulations 39, 40, 41, 42, 43, 43A, 43B and 47. The work will also have to comply with all other relevant requirem
non-domesticenergyNearly Zero-Energy Building (NZEB) Requirements
Regulation 43BNI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
Regulation 43B 'Nearly zero-energy requirements for new buildings' (NZEB), came into operation for newly erected buildings occupied and owned by public authorities from 1st January 2019. NZEB require
non-domesticenergypublic-buildingMaterials and workmanship
NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
Any building work which is subject to requirements imposed by Part A of the Building Regulations should be carried out in accordance with regulation 23 of those regulations. Guidance on meeting these
non-domesticenergyNamed standards
NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
Where this Technical Booklet makes reference to a named standard, the relevant version of the standard is the one listed in Appendix B. However, if this version has been replaced or updated by the iss
non-domesticenergyDiagrams
NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
The diagrams in this Technical Booklet supplement the text. They do not show all the details of construction and are not intended to illustrate compliance with any other requirement of the Building Re
non-domesticenergyProtected buildings
NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
District councils have a duty to take account of the desirability to preserve the character of protected buildings when carrying out their functions under Building Regulations. Therefore, where work i
non-domesticenergyconservationOther legislation
NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
The provisions of this Technical Booklet relate to the requirements of Building Regulations and do not include measures which may be necessary to meet the requirements of other legislation. Such other
non-domesticenergyWorkplace Regulations and Building Design
NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
The Workplace (Health, Safety and Welfare) Regulations (Northern Ireland) 1993 (the Workplace Regulations) contain some requirements which affect building design. The main requirements are now covered
non-domesticflatsenergyEnergy Performance of Buildings Directive Implementation
NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
Part F implements aspects of Articles 2 to 9 of Directive 2010/31/EU of the European Parliament and of the Council of 19 May 2010 on the energy performance of buildings. Other legislation, including
non-domesticenergyPart F Application and Interpretation
Regulation 38NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
38.—(1) Subject to paragraphs (2), (3) and (4) this Part shall apply to any building and where a building contains one or more dwellings to each dwelling separately. (2) The energy efficiency require
non-domesticenergyconservationDefined Terms from EU Directive 2010/31/EU
(5)NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
In this Part, the following terms have the same meaning as in European Parliament and the Council Directive 2010/31/EU of 19 May 2010 on the energy performance of buildings (recast)— (i) "industrial s
non-domesticenergyDefinition: Building Envelope
(6)NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
"Building envelope" in relation to a building, means the walls, floor, roof, windows, doors, roof windows and rooflights;
non-domesticenergyDefinition: Change of Energy Status
(6)NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
"Change of energy status" means any change which results in a building becoming a building to which the energy efficiency requirements of these Regulations apply, where previously it was not;
non-domesticenergyDefinition: Cogeneration
(6)NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
"Cogeneration" means simultaneous generation in one process of thermal energy and one or both of the following— (a) electrical energy; (b) mechanical energy;
non-domesticenergyDefinition: District or Block Heating or Cooling
(6)NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
"District or block heating or cooling" means the distribution of thermal energy in the form of steam, hot water or chilled liquids, from a central source of production through a network to multiple bu
non-domesticenergyDefinition: Energy Efficiency Requirements
(6)NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
"Energy efficiency requirements" means the requirements of regulations 39, 40, 41, 43, 43A, 43B and 47;
non-domesticenergyDefinition: Energy from Renewable Sources
(6)NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
"Energy from renewable sources" means energy from renewable non-fossil sources, namely wind, solar, aerothermal, geothermal, hydrothermal and ocean energy, hydropower, biomass, landfill gas, sewage tr
non-domesticenergyDefinition: Heat Pump
(6)NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
"Heat pump" means a machine, a device or installation that transfers heat from natural surroundings such as air, water or ground to buildings or industrial applications by reversing the natural flow o
non-domesticenergyDefinition: High-Efficiency Alternative Systems
(6)NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
"High-efficiency alternative systems" include— (a) decentralised energy supply systems based on energy from renewable sources; (b) cogeneration; (c) district or block heating or cooling, particularly
non-domesticenergyDefinition: Major Renovation
(6)NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
"Major renovation" means the renovation of a building where more than 25% of the surface area of the building envelope undergoes renovation;
non-domesticenergyDefinitions - National Calculation Methodology
NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
"National calculation methodology" means— (a) in relation to a dwelling, the Government's Standard Assessment Procedure (SAP) for Energy Rating of Dwellings; and (b) in relation to a building other th
non-domesticenergyDefinitions - Nearly Zero-Energy Building
NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
"Nearly zero-energy building" means a building that has a very high energy performance, as determined in accordance with the National calculation methodology, where the nearly zero or very low amount
non-domesticenergyDefinitions - Pipes, Ducts and Vessels
NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
"Pipes, ducts and vessels" means any pipe, any duct and any vessel in a space heating or space cooling system that is intended to carry a heated or chilled liquid or gas and includes any associated fi
non-domesticenergyDefinitions - Thermal Element
NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
"Thermal element" means a wall, floor or roof (but does not include windows, doors, roof windows or rooflights) which separates a thermally conditioned space from— (a) the external environment includi
non-domesticenergyDefinitions - Total Useful Floor Area
NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
"Total useful floor area" means the total area of all enclosed spaces measured to the inside face of the external walls, that is, the gross floor area, and in the case of sloping surfaces such as stai
non-domesticenergyDefinitions - Target Carbon Dioxide Emission Rate
NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
"Target carbon dioxide emission rate" means the rate of carbon dioxide emission measured in kilograms of carbon dioxide per square metre of total useful floor area per year;
non-domesticenergyDefinitions - Space Cooling System
NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
"Space cooling system" does not include a system or that part of a system which cools or stores water solely for a commercial or industrial process;
non-domesticenergyDefinitions - Space Heating System
NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
"Space heating system" does not include a system or that part of a system which heats or stores water solely for a commercial or industrial process;
non-domesticenergyDefinitions - Renovation of a Thermal Element
NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
"Renovation of a thermal element" means the provision of a new layer to a thermal element or the replacement of an existing layer (other than where a partial replacement layer is provided solely as a
non-domesticenergyRegulation 39 - Conservation measures
39NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
Reasonable provision shall be made for the conservation of fuel and power in any building by— (a) limiting heat gains and losses— (i) through thermal elements and other parts of the building fabric; a
non-domesticenergyRegulation 40 - Target carbon dioxide emission rate
40NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
Without prejudice to the requirements of regulation 39, where a building is to be erected, or a building other than a dwelling is extended as described in regulation 38(3)(b), minimum energy performan
non-domesticenergyRegulation 41 - Consequential improvements
41NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
Where it is proposed to execute building work in relation to any existing building with a total useful floor area greater than 1000 m2 and that work consists of or includes— (a) an extension; (b) the
non-domesticenergyRegulation 42 - Change of energy status
42NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
Where there is a change of energy status such work shall be carried out as is necessary to ensure that the building complies with the requirements of regulation 39.
non-domesticenergyRegulation 43 - Renovation of thermal elements
43NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
Where the renovation of an individual thermal element— (a) constitutes a major renovation; or (b) amounts to the renovation of more than 50% of the surface area of the thermal element, the renovation
non-domesticenergyAnalysis of high-efficiency alternative systems
43ANI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
Where a building is to be erected, the person carrying out the work shall, before construction begins, undertake an analysis of and give consideration to the use of available high-efficiency alternati
non-domesticenergyNearly zero-energy building requirement
43BNI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
Where a building is erected, it must be a nearly zero-energy building. In respect of new buildings occupied and owned by public authorities, this regulation shall apply from 1st January 2019; and in r
non-domesticenergypublic-buildingNotice of air pressure test results
44NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
Where an air pressure test is undertaken for the purposes of demonstrating compliance with regulation 40(2), the person carrying out the work shall give, not more than 5 days after completion of the t
non-domesticenergyNotice of commissioning of building services
45NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
Where this regulation applies, the person carrying out the work, for the purpose of ensuring compliance with regulation 39(b) and (c), shall give, not more than 5 days after completion of the commissi
non-domesticenergyNotice of emission rate
46NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
Where a calculation is carried out for the purpose of demonstrating compliance with regulation 40(2), a notice in writing that states— (a) the target carbon dioxide emission rate for the building; (b)
non-domesticenergyProvision of information
47NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
Where regulation 39 applies, the person carrying out the work shall give, not more than 5 days after completion of the work, a notice in writing to— (a) the building owner giving sufficient informatio
non-domesticenergyRegulation 39: Conservation measures
Regulation 39NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
It is the view of the Department that the requirements of regulation 39 will be met when – (a) provisions are made to limit heat gains and losses through thermal elements and other parts of the buildi
non-domesticenergyRegulation 40: Target carbon dioxide Emission Rate
Regulation 40NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
It is the view of the Department that the requirements of regulation 40 will be met when a building is designed and constructed so as not to exceed its Target carbon dioxide Emission Rate (TER). The T
non-domesticenergyRegulation 41: Consequential improvements
Regulation 41NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
It is the view of the Department that the requirements of regulation 41 will be met when work, referred to as consequential improvements, is carried out to enhance an existing building's conservation
non-domesticenergyRegulation 42: Change of energy status
Regulation 42NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
It is the view of the Department that the requirements of regulation 42 will be met where a previously unconditioned building, or part of a building, becomes conditioned i.e. by heating or cooling and
non-domesticenergyRenovation of thermal elements - major renovation or 50% surface area
0.5NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
It is the view of the Department that when renovation and/or replacement work to an individual thermal element constitutes a major renovation or the renovation amounts to more than 50% of the surface
non-domesticenergyConsideration of high-efficiency alternative systems
0.6NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
It is the view of the Department that the requirements of regulation 43A will be met when the person carrying out the work undertakes analysis of and gives consideration to incorporating high-efficien
non-domesticenergyNearly zero-energy requirements for new buildings
0.7NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
It is the view of the Department that the requirements of regulation 43B will be met for new buildings other than dwellings when the BER of the building is at least 15% lower than the TER calculated u
non-domesticenergySection 2 - Provisions for achieving Target Emission Rate and standards
0.8NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
The guidance in Section 2 gives Criterion in relation to – (a) achieving the TER; (b) minimum acceptable standards; (c) limiting the effects of solar gain; (d) quality of construction and commissionin
non-domesticenergySection 3 - Provisions for alterations and extensions
0.9NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
The guidance in Section 3 gives provisions to enhance the conservation of fuel and power when altering or extending existing buildings where there is a material change of use, or a change of energy st
non-domesticenergy