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Similar to Getting to Zero Carbon: SAPs in Detail and Preparing for Zero Carbon Seminar February 2011
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Getting to Zero Carbon: SAPs in Detail and Preparing for Zero Carbon Seminar February 2011
- 4. Local Authority Planning Policy Southampton – Code Level 4 and 20% Eastleigh – Code Level 4 and 15% energy from renewable sources New Forest – Code Level 3 (4 from April 2012) Bournemouth – Code 3 (from Summer 2012) Winchester – “Policy Aspiration” Code Level 5 (Energy and Water sections only)
- 9. What are the main factors affecting the SAP assessment? Dwelling size, type and orientation U-values Thermal mass Thermal bridging Air Pressure Test Ventilation Heating, hot water and controls New technologies
- 17. Case studies 1. 2 bedroom flat 2. 3 bedroom semi detached house 3. 4 bedroom detached house
- 18. Type : 2 bed flat (57m 2 ) Part L Code 4 Code 5 (2016) U values Walls Roof Floor Windows 0.19 0.11 n/a 1.4 As Part L As Part L Ventilation MVHR MVHR MVHR (improved efficiency) Air pressure test 5 5 3.5 Thermal bridging Accredited Construction Details Accredited Construction Details Accredited Construction Details Heating and hot water Gas combi boiler Air Source Heat Pump Communal biomass boiler to block Renewable None None 0.7kWp PV
- 19. Type : 3 bed semi (85m 2 ) Shower Heat Recovery Unit Improved hot water cylinder insulation Enhanced Construction Details 3 MVHR (improved efficiency) 0.20 0.11 0.15 1.3 Code 4 Part L Code 4 Code 5 (2016) U values Walls Roof Floor Windows 0.22 0.12 0.15 1.4 As Part L 0.20 0.11 0.15 1.3 Ventilation MVHR MVHR MVHR (improved efficiency) Air pressure test 4 4 3 Thermal bridging Accredited Construction Details Accredited Construction Details Enhanced Construction Details Heating and hot water Gas system boiler Gas system boiler Improved hot water cylinder insulation Renewable None 1kWp PV 3kWp PV system
- 20. Type : 4 bed detached (125m 2 ) Part L Code 4 Code 5 (2016) U values Walls Roof Floor Windows 0.24 0.17 0.17 1.4 As Part L As Part L Ventilation Natural Natural Natural Air pressure test 7 7 7 Thermal bridging Accredited Construction Details Accredited Construction Details Accredited Construction Details Heating and hot water Gas system boiler Gas system boiler Biomass boiler (wood pellets) Renewable None 1.2kWp PV 1.6kWp PV
Editor's Notes
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- It is also interesting to note that the emission reduction targets are set out by house type, with semi and detached dwellings having to meet higher targets than flats and mid terraces. If you are interested, there is more detail on the zero carbon hub website or the consultation can be responded to on the DCLG website.