6 Taking the lead‘Sustainability has come from nowhere to become one of Londoners top threeconcerns along with crime and the cost of living. We want Londoners to take thelead on sustainability.’Ken Livingstone , MIPIM Cannes, 2006
7 Measuring Market Value Mayor of London, Ken Livingstone said:"The high-quality, low-cost design achieved by PRPZedFactor at St Matthews sets the standard for what we should be achieving in every social housing development in London.“Given the choice, most people would rather live in an energy efficient building like this, with lower bills and higher year-round comfort. And the big reductions in carbon emissions will help London play its role in the increasingly urgent task of tackling global warming."
8 St Matthews – Brief 12 Key-worker Flats, 6 1B2P and 6 2B4P for rent Challenge Funding for “Innovation”Phase 1 of estate regenerationZero heating specification£75 per annum energy costs per householdCost constrained
13 Specification Super-insulated building envelope 2. High thermal mass Triple glazing or double glazing warm edge technologyAirtight constructionPrevents heat and coolth loss2. High thermal massStores heat gains from occupation and from sunny daysKeeps homes cool on hot sunny days3. Heat exchange ventilationMaintains a healthy air qualityMechanical ventilation with heat recovery4. South facing sun spaces with high performance windowsAllows large windows to be used without heat lossBrings sunlight into living spacesAllows the sun to provide up to 30% of the space heating requirement
14 Specification 5. Zero carbon space heating requirement Central bio fuel boilerSolar thermal panelsLow fuel bill6. Clear upgrade path to a full ZEDAvoids future fuel povertyAllows the building to not contribute to global warmingFuture installation of photovoltaicsFuture installation of wind turbines7. Other measuresAnti allergen environment, no carpetsReduction in use of toxic materials
15 Part L Specification 2002 Part L 2006 Part L1a 2010 Part L1a 50mm Wall InsulationIndividual Gas BoilersStandard Double GlazingBalcony onlyAir tightness 12cum/h.sqmAdditional NIA 85sqm100mm Wall InsulationCondensing Gas BoilersMedium Spec D.GlazingBalcony onlyAir tightness 10cum/h.sqmAdditional NIA 85sqm150mm Wall InsulationCondensing Gas BoilersHigh Spec Double GlazingBalcony onlyAir tightness 8cum/h.sqmAdditional NIA 74sqm
16 Future-Proofing Building orientation Roof slope orientation and pitch Roof finishesSurfaces for PhotovoltaicsAero-dynamicsStructural implications of turbinesFlexibility and accessibility of Services/Plant space
17 ZED standards construction Zero Heating-As BuiltZero CarbonEnergy plusZED construction standards plus 300mm wall insulationBiomass Communal BoilerTriple GlazingBalcony & SunspaceAir tightness 8cum/h.sqmSolar Thermal + Water StoreMechanical HRVZED construction standards plus 300mm wall insulationBiomass Communal BoilerTriple GlazingBalcony and SunspaceAir tightness <5cum/h.sqmSolar Thermal + Water StoreWind assisted HRVTurbineZED construction standards plus 300mm wall insulationBiomass Communal BoilerTriple GlazingBalcony and SunspaceAir tightness <5cum/h.sqmSolar Thermal + Water StoreWind assisted HRVTurbinePhotovoltaicsCost Uplift 10%Cost Uplift 17%
18 Building envelope average U-value Thermal Insulation Cost EffectivenessHeating System cost50mm + D glazing300mm + T glazing + low-E100mm + D glazing + low-EEnergy payback periodSuper-insulation becomes cost effective at the point where the heating system can be omittedBuilding envelope average U-value
20 St Matthews – Lessons Learnt ZED Standards super-insulation, windows and high thermal massSuper-insulation key to conservation of bio-massFrame solution to satisfy MMC is possible with cementitious internal liningOrientation and sun space not essentialHRV Mechanical only with on site electricity generationAvoid technologies reliant on electricityKeep plan simple, avoid recesses and steps if possibleDecide on which green technology from day onePlan for future upgradesAllow for additional costs but could reduce if volumes increase
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