"Sourcing Products / Technologies for Eco-Retrofit" - Gary Wilburn, HPW Architects
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Transcript of "Sourcing Products / Technologies for Eco-Retrofit" - Gary Wilburn, HPW Architects
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Sourcing products / technologies for eco-retrofit
Gary Wilburn Creative Director HPW
SustainableConstructionNetwork
GW-SCN (June 2010) 24/6/10 17:14 Page 1
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Retro-fit: the opportunity...To achieve an 80% reduction in carbon by 2050 � 600,000+ housing retrofits every year � 2,500 retrofits per working day � 333 per working hour � 5.5 a minute!
In the South East region � 45 retrofits per working hour costing £1,000,000 per working hour!
Creating the largest ever UK engineering and construction project if £20-30,000 is to be spent per home to achieve the 80% targets.
Totaling £16.05 Billion (at 2007 costs according to BERR)
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What is the real retro-fit challenge?...
� Complex and involving process� Dealing with good and bad standards of original construction� Every site is unique� Behaviour of the suppliers, contractors and tenants� Upskilling and educating the supply chain� Sourcing products and technologies (least of our problems!?)� Cost and ROI
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New build housing...
� Exemplar new build social housing scheme designed 1999
� PRP Architects
� Huge housing portfolio and experience
� Southampton CC support and Hyde Housing Association commission
� POE study
� Lessons to take from construction shortfalls including renewables
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DESIGN ZERO DRIVE
Portswood Road - Southampton
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Retro-fit housing...
� Passivhaus targets for a retro-fit home
� Prewett Bizley Architects
� 22 kWh / m2 achieved
� Victorian terrace
� MVHR and air tightness challenges
� Owned by a Building Physicist!
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DESIGN ZERO DRIVE
Culford Road - London
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York stone barn retro-fit� Low carbon conversion� HPW designed� GSHP� Triso super 10 insulation� POE study ongoing� Listed exterior� Owner living through building works
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DESIGN ZERO DRIVE
Domestic retro-fit (before)
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Elevation G (NORTH 1)
DESIGN ZERO DRIVE
Domestic Retro-fit (after)
Charts created using heating system data created by DSM in IES and lighting data
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Thank you... any questions?
SustainableConstructionNetwork
GW-SCN (June 2010) 24/6/10 17:15 Page 11