Updates & Resources
WHAT IS SAPS AND WHY YOU NEED IT
Standard Assessment Procedure assess how much energy a dwelling will use while delivering a defined level of comfort and service provision. The assessment is based on standardised assumptions for occupancy and behaviour enabling a like-for-like comparison of dwelling performance. Factors such as fuel costs and emissions of carbon dioxide (CO2) are determined from the assessment. SAP quantifies a dwelling’s performance in terms of: energy use per unit of floor area, a fuel-cost-based energy efficiency rating (the SAP Rating), and the emissions of CO2 (the Environmental Impact Rating).
They determine the energy related running costs of a dwelling or also called SAP rating)
They demonstrate compliance with Part L of the Building Regulations
Legally required as this will be used to generate an Energy Performance Certificate (EPC)
SAP are also required for conversion or extension.
SAP info
SAP 2012 & Part L 2020
SAP 2012 is the latest revision of the SAP documentation and was published to underpin the 2013 Amendment to Part L of the Building Regulations for England and Wales. This expected to deliver a 6% improvement in new dwelling performance.
We currently use SAP 2012, but changes to Part-L of the building regulations are being consulted on and Part-L 2020 is expected to be ‘live’ by late 2020. SAP 10.1 is the most recent version of SAP. This version is currently being used to model and plan the new house-type designs and specifications that will be used for ADL2020 (Approved Document Part L 2020). It is also connected to The Future Homes Standard that is expected to be released in 2025.
The published consultation for Part L 2020 sets out two options to uplift energy efficiency standards:
Option 1: ‘Future Homes Fabric’. Would deliver a 20% reduction in carbon emissions. Based on: “very high fabric” standards +/- Triple Glazing, a gas boiler, and Waste Water Heat Recovery for Showers (WWHRS) as standard.
Option 2: ‘Fabric Plus Technology’. Would deliver a 31% carbon emissions reduction. Based on: “very high fabric” standards +/- Double Glazing; a gas boiler (or low carbon heating, preferred), Waste Water Heat Recovery for Showers (WWHRS), and Solar PV as standard.
Proposals are also in place for more stringent provisions to prevent homes being built to out-of-date building regulations.
Four different performance metrics are proposed:
Primary energy target
+ CO₂ emission target
+ Householder affordability rating
+ Minimum standards for fabric and fixed building services (potentially including WWHRS)
+ Air tightness testing for every new dwelling
The key changes to Part L are detailed in the table below from the Ministry of Housing, Communities and Local Government.
Drawing checks for fabric build up
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