The implementation date for Scotland has been amended to 1st December 2022. Changes to standards for energy performance, ventilation, overheating and sustainability will apply to new building work from this date.
At present, Building Research Establishment (BRE) has advised the following:
The iSBEM tool and SBEM specification for Scotland will be made available to developers from the start of July 2022.
The SAP 10 specification for Scotland and supporting test cases will be issued at the start of August 2022.
A summary of the key changes is available on the Scottish Government’s Technical Handbooks 2022 webpage. These have been added to the recent changes which address the fire safety of cladding, introduced on 1st June 2022.
Update (15th Aug 2022)
Please be advised that iSBEM_v6.1.d has now been released on the UK-NCM website.
iSBEM_v6.1.d implements Scotland's 2022 NCM, which is due to come into force on 1 December 2022 in support of the 2022 edition of Section 6 in Scotland.
In v6.1.d, calculations for England's purposes of analysis (compliance, EPC, and GD) remain unchanged from the current version (iSBEM_v6.1.c).
Summary of Key Changes:
In order to make it easier for our assessors, we have provided a summary of the changes below:
NDEA:
Section 6 (energy) from 1 December 2022
Non-domestic handbook – standard 6.1 (energy demand and carbon dioxide emissions) and supporting guidance.
Standard 6.1 - Amended to introduce a delivered energy target for new buildings and to apply requirements to reduce carbon dioxide emission only to new buildings using direct emissions heating systems.
Clause 6.1.1 – Confirmation of application of SBEM v.6 as the current version of the UK assessment methodology.
Clause 6.1.2 – Explanation of new energy target and exemption from TER for non-direct emission heating systems.
Clause 6.1.4 – Amendment to the notional buildings used to set compliance targets. Three variations on the notional building are applied based upon the use of an electric heat pump, heat network connection or any other heating solution.
Clause 6.1.6 – Explanation of the revised treatment of the export component of on-site generation of power and amended approach to heat network connections.
Clause 6.1.8 – Amended guidance on shell buildings, emphasising the application of a continuing requirement on fit-out and deferring EPC assessment until completion of the fit-out.
Clause 6.2.1 – Area-weighted average U-values for elements of the fabric improved; one set of values now applies to all building work. Variant U-values for shell buildings are no longer defined (clause removed).
Clause 6.2.4 – Where input values are not used, default allowance for thermal bridging in notional building amended.
Clause 6.2.6 – Reduced exceptions for testing of new buildings. Test methodology refers to is now CIBSE TM 23.
Clause 6.2.7 – Reference now made to fabric values in clause 6.2.1 for conversion of heated and unheated buildings. A robust demonstration of ‘reasonably practicable solutions is sought.
Clause 6.2.8, 6.29 & 6.2.11 – Qualified reference now made to fabric values in clause 6.2.1.
Clause 6.3.1, 6.4.1, 6.5.1 & 6.6.2 – Reference now made to the 2022 Non- domestic Building Services Compliance Guide.
Clause 6.6.1 – Now references provisions set out in standard 3.28 for residential non-domestic buildings.
Standard 6.7 - Amended to include ‘control systems’ and commissioning extended to address the effective operation of installed services.
Clause 6.7.2 - Added the provision of a commissioning plan at the design stage.
Clause 6.7.3 - Added on the provision of a commissioning report on completion of construction.
Clause 6.8.2 - Updated to include information on avoiding overheating risk within the quick start guide.
Clause 6.8.3 - Added setting out provisions for information to support retrofit of direct emission heating systems.
Previous Annex 6.A - Now deleted. Other annexes were renumbered.
Annex 6.A – Examples updated to reflect changes to guidance to standard 6.2.
Annex 6.B – Provisions specific to limited duration modular buildings updated.
Domestic handbook – standard 6.1 (energy demand and carbon dioxide emissions) and supporting guidance.
Standard 6.1 - Amended to introduce a delivered energy target for new buildings and to apply requirements to reduce carbon dioxide emission only to new buildings using direct emissions heating systems.
Clause 6.1.1 – Explanation of new energy target and exemption from TER for non-direct emission heating systems. Confirmation of application of SAP 10 as the current version of the UK assessment methodology.
Clause 6.1.2 – Amendment to the notional buildings used to set compliance targets. Three variations on the notional building, applied based upon use of electric heat pump, heat network connection or any other heating solution.
Clause 6.1.3 – Explanation of the revised treatment of the export component of on-site generation of power and of the amended approach to compliance for dwellings connected to a heat network.
Note: ‘Simplified approach’ to compliance with standard 6.1 (build to notional building specification, no SAP compliance calculation needed) is now removed as an option.
Clause 6.2.1 – Area-weighted average U-values for elements of the fabric improved; one set of values now applies to all building work. Option of demonstrating compliance of new buildings via ‘space heating demand limit’ set out.
Clause 6.2.5 – Airtightness testing was now undertaken on each new dwelling. No exception for high infiltration dwellings. Test methodology refers to CIBSE TM 23.
Clause 6.2.6 – Reference now made to fabric values in clause 6.2.1 for conversion of heated and unheated buildings. A robust demonstration of ‘reasonably practicable solutions is sought.
Clause 6.2.8, 6.2.10, 6.2.11 & 6.2.12 – Reference now made to fabric values in clause 6.2.1 for extensions.
Clause 6.3.1, 6.4.1, 6.5.1 & 6.6.2 – Reference now made to the 2022 Domestic Building Services
Clause 6.6.1 – Assessment of overheating risk now references provisions set out in standard 3.28 for dwellings.
Standard 6.7 - Amended to include ‘control systems’ and commissioning extended to address effective operation of installed services.
Clause 6.7.2 - Added on the provision of a commissioning plan at the design stage.
Clause 6.7.3 - Added on the provision of a commissioning report on completion of construction.
Clause 6.8.2 - Updated to include information on avoiding overheating risk within the quick start guide.
Clause 6.8.3 - Added setting out provisions for information to support the retrofit of direct emission heating systems.
Previous Annex 6.A - Now deleted. Other annexes were renumbered.
Annex 6.A – Examples updated to reflect changes to guidance to standard 6.2.
