When you’re planning a new build project, it’s essential to comply with Building Regulations Part L to ensure your project is energy efficient and environmentally friendly. SAP Calculations (Standard Assessment Procedure) play a key role in this process, especially for new builds. Here, we answer the most common questions about SAP calculations for new builds and how to achieve compliance.
1. What are SAP Calculations?
SAP (Standard Assessment Procedure) Calculations are an energy efficiency assessment used to determine the energy performance of residential buildings in the UK. They measure a building’s energy use, carbon dioxide emissions, and heating requirements.
2. When are SAP Calculations required for new builds?
SAP calculations are mandatory for all new build homes before construction begins. They must be submitted to Building Control to demonstrate compliance with energy efficiency standards and to obtain an Energy Performance Certificate (EPC) upon completion.
3. Why are SAP Calculations important for new builds?
SAP calculations ensure that new homes meet government standards for energy efficiency and carbon emissions. They help developers and homeowners create energy-efficient properties, reduce energy bills, and enhance market value by achieving a strong EPC rating.
4. What information is needed for SAP Calculations?
To carry out SAP Calculations, assessors typically need:
- Architectural drawings (plans, sections, and elevations)
- Construction details (wall, roof, and floor specifications)
- Heating and ventilation specifications
- Window and door specifications (U-values and g-values)
- Renewable energy systems details (if applicable)
- Photographic Evidence of the build on completion
5. What is the process?
- Submit Architectural Plans – Our SAP assessor will use your building plans to calculate the expected energy performance.
- Receive the SAP Compliance Report – Our SAP Assessor will provide you with your BREL Report, As Designed Compliance Report, Psi Values, U Value Certificates and Predicted Energy Performance.
- Make Adjustments (if needed) – If the building doesn’t meet compliance, adjustments can be suggested to improve performance.
- Achieve Compliance and Approval – Submit your Reports to Building Control for approval.
- Complete your sign off – Once your project is complete/built, you will receive your As Built BREL Report, SAP Calculation Compliance Report and Energy Performance Certificate for sign Building Control off.
6. What documents should I expect to receive?
At the design stage, you should expect to receive the following documents:
- BREL Report
- SAP Calculations
- Psi Value Certificates
- U Value Certificates
- Predicted Energy Performance Certificate
- Part L Compliance Pack
At the built stage, you should expect to receive the following documents:
- BREL Report
- SAP Calculations
- Final Energy Performance Certificate
7. What happens if my new build fails SAP compliance?
If your new build does not meet SAP compliance, recommendations will be provided to improve energy efficiency. Common solutions include enhancing insulation, upgrading heating systems, or incorporating renewable energy sources like solar panels.
8. What are Psi Calculations?
Psi-value calculations determine the heat loss or gain through junctions in a building, like where a wall meets a floor or a window frame, and are measured in Watts per meter Kelvin (W/mK).
Psi-values help to accurately determine the heat loss through junctions, which is often a significant factor in a building’s overall energy performance.
Psi-values are used in Standard Assessment Procedure (SAP) calculations, which are used to assess the energy performance of residential buildings and ensure compliance with building regulations.
9. How long do SAP Calculations take?
The time required depends on the complexity of the project. A straightforward new build can take a few days, while more intricate designs or multiple dwellings may take longer.
10. How much do SAP Calculations cost?
Costs vary depending on the number of units and the complexity of the new build. Prices typically start from a few hundred pounds but may increase based on project specifications.
11. Who can carry out SAP Calculations?
SAP Calculations must be carried out by accredited energy assessors. They use government-approved software to model the building’s energy performance.
12. Where can I get SAP Calculations for my new build project?
You can obtain SAP Calculations from accredited energy assessors or SAP specialists. It is recommended to engage an assessor early in the project to ensure compliance and avoid costly redesigns.
Get Expert SAP Calculations for Your Extension Today!
If you’re planning a new build and want to ensure compliance with Building Regulations, our team of experienced SAP assessors is here to help. We provide a fast, reliable service with tailored advice to meet your needs.
- Call us today: 020 7183 3240
- Email us: [email protected]
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