The brief
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UK Building Compliance completed SAP Calculations, Water Usage Calculations and a Net Zero Statement for this client in Watford.
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This was required to assist the projects planning application by helping to meet Paragraph 80 of the National Policy Framework. This allows local authority’s to grant planning permission on isolated homes in the countryside by proving that the design is of ‘exceptional quality’.
The process
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Our Stroma accredited assessors then carried out SAP Calculations & Water Usage Calculations in order to achieve Part L & Part G compliance
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We also carried out a Net Zero Statement which consisted of us:
- Designing an efficient fabric specification - reducing the amount of energy the dwelling requires
- Specifying an MVHR system that allows the building to be as air tight as possible - further reducing the energy demand
- Biomass heating was chosen as the most effective low carbon option for providing space/water heating to the dwelling
- Finally, the remaining emissions were offset by the installation of renewable technologies, this project utilites Solar PV as well as Wastewater Heat Recovery System
| SAP Measure | Regulated C02 Emissions – Tonnes per Annum SAP 2012 |
| Baseline Part L Target Emissions | 18.19 |
| Efficient Fabric Design & Low U-Values | 12.63 |
| After MVHR | 11.75 |
| After Wastewater Heat Recovery | 11.15 |
| After Wood Fuel Boiler | 5.40 |
| After Solar Photovoltaic System | 0 |
We also recognised the possibility of the dwelling being measured against the new regulations that are set to come into force later this year
Advice was given on how the building would perform under the updated measures to allow for planning every eventuality
The results
- SAP CALCULATION RESULTS
Target Emission Rate (TER)
Target Fabric Energy Efficiency (TFEE)
Dwelling Emission Rate (DER)
Dwelling Fabric Energy Efficiency (DFEE)
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Compliant
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The SAP results demonstrate that a net zero score was achieved
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All other Part L and Part G targets were met comfortably