warrenhouse case study - fabric and further retrofit
DESCRIPTION
20 Warrenhouse Road is a end terrestrial house that was badly fire damaged and unoccupied for over 15 years. The project was to refurbish the property and to incorporate the latest technologies to enable it to be energy self sufficient. The energy self sufficiently was to be achieved through insulation, air permeability, solar energy and reuse/recycling energy using a NIBE heat pump systemTRANSCRIPT
J O H N M c C A L L A R C H I T E C T S
20 Warrenhouse Road - Retrofit
20 Warrenhouse Road
Fabric and Further Retrofit
J O H N M c C A L L A R C H I T E C T S
20 Warrenhouse Road - Retrofit
Aim
Develop a single property fabric
and further approach to retrofit
and climate change that can be
applied to void properties in need
of significant repair.
Existing
CO2 emission 152.63 kg/m2/year
J O H N M c C A L L A R C H I T E C T S
20 Warrenhouse Road - Retrofit
Project Outcomes
It is anticipated that the completed
project will display significant cost
and carbon savings relating to the
property heating requirements. This
project will also explore further
mitigation to climate change
measures resulting in a reduced
environmental impact
Completed
CO2 emission 15.47kg/m2/year
J O H N M c C A L L A R C H I T E C T S
20 Warrenhouse Road - Retrofit
Project Outcome
Predicted annual energy costs of
£458
J O H N M c C A L L A R C H I T E C T S
20 Warrenhouse Road - Retrofit
Project Outcome
Predicted annual energy costs of
£458
Dwelling Emission Rate (DER)
equivalent to Code for Sustainable
Homes Level 4
J O H N M c C A L L A R C H I T E C T S
20 Warrenhouse Road - Retrofit
Project Outcome
Predicted annual energy costs of
£458
Dwelling Emission Rate (DER)
equivalent to Code for Sustainable
Homes Level 4
Air Permeability score of
2.74m3/(h.m2)
J O H N M c C A L L A R C H I T E C T S
20 Warrenhouse Road - Retrofit
Project Outcome
Predicted annual energy costs of
£458
Dwelling Emission Rate (DER)
equivalent to Code for Sustainable
Homes Level 4
Air Permeability score of
2.74m3/(h.m2)
Great new home for First Ark
J O H N M c C A L L A R C H I T E C T S
20 Warrenhouse Road - Retrofit
The Process
J O H N M c C A L L A R C H I T E C T S
20 Warrenhouse Road - Retrofit
Rebuilding
Removed existing windows
and doors
Created new roof
Formed internal walls &
Intermediate floor
Cleared overgrown site
J O H N M c C A L L A R C H I T E C T S
20 Warrenhouse Road - Retrofit
The Fabric
200mm Enhanced
Polystyrene – 0.15W/m2K
150mm Icynene spray foam
insulation with 600 PIR –
0.15W/m2K
Double glazed windows
Composite Door
Air tightness score of 2.74
J O H N M c C A L L A R C H I T E C T S
20 Warrenhouse Road - Retrofit
The Further
Exhaust Air Heat Pump and
Mechanical Ventilation
System
Under floor heating, no heat
source to first floor
2kW peak PV array
Voltage Optimisation
Rainwater harvesting system
J O H N M c C A L L A R C H I T E C T S
20 Warrenhouse Road - Retrofit
m3/hr/m2@50Pa
Water tight 60
1st fix 6.25
2nd fix 3.78
completion 2.74
Air Permeability
Spray foam insulation with
taped PIR
DPM and Tyvek DuPont
AirGuard Reflective lapped
into British Gypsum
Soundcoat Plus Parge Coat
Tested at 4 stages
J O H N M c C A L L A R C H I T E C T S
20 Warrenhouse Road - Retrofit
1
2
4
8
16
32
64
Water tight 1st fix 2nd fix completion
Axis
Tit
le
m3/hr/m2@50Pa
m3/hr/m2@50Pa
J O H N M c C A L L A R C H I T E C T S
20 Warrenhouse Road - Retrofit
The Result
J O H N M c C A L L A R C H I T E C T S
20 Warrenhouse Road - Retrofit
First Ark’s most energy
efficient property…
meeting the 2050
climate change targets