Retrofitting for the energy revolution,
one step at a time
EuroPHit
EPBD – National implementationNZEB – MS report
on progressEED – Entry into
force
EPBD – MS list of measures and instruments
RES Directive – Minimum levels of RES
EED – Assessment of national transposition
NZEB – MS report on progress
NZEB – All new public buildingsNZEB ! MS report
on progress
EPBD – Applicationbetween 9/01/2013
and 9/07/2013EED – National
implementation
EPBD – MS updated list of measures and instruments
NZEB – All
new/refurbished
buildings
2012
2013
2014 2017
2015 2018
2020
Here we are
EuroPHit project starts
EuroPHit project ends
2013
Strategic objectives
2016 20202014
The policy background
High efficiency
Low efficiency
howto
get th
ere?
Reduce consumption!
EU’s 2020 objective:
All new/refurbished buildings asNZEBs (Nearly Zero Energy Buildings)
Quality renovation
...achieved with the Passive House principles
IF you do it, do it right
Secondary school retrofit in Baesweiler, Germany
© Rongen Architects
Building stock
NZEB
• motivation
• disturbance of inhabitants
• life cycle of existing components
• financing
• competence
Com
plete
retro
fit
Ther
ew
ill b
ech
alle
nges
:
All at once
Building stock
step
by
• criteria and softare tool
• pilot projects
• suitable productsstep
Retrofit
• financing
instruments
• dissemination
overall
refu
rbis
hment pla
nEnerPHit
+ RES
...Or step by step
EuroPHit
The EuroPHit Project
With the EnerPHit Standard as the goal and Passive House
principles as the basis, EuroPHit applies knowledge on deep
energy retrofits to the oft+overlooked yet critical area of step+by+
step refurbishments
� Criteria and certification scheme for retrofits aiming for the
EnerPHit Standard of the course of years
� Financing models and market incentive programmes tailored to
step+by+step retrofits
� Design concepts and sound guidelines for the development of
suitable, high performance building components
� Specific energy balance tools for gradual energy retrofits
� Training materials and workshops focusing on the specific needs
of step+by+step refurbishment
� Building case studies showing the way towards an increasingly
high quality, energy efficient building stock.
Key project outcomes
1. Components step6by6step
What is step6by6step retrofit?
Building
stock
Insulation Windows,
airthightness
& ventilation
RES & heating
system
2. Facades / Sides / parts step6by6step
What is step6by6step retrofit?
Building
stock
North side South side +
windows,
airtightness &
ventilation
Rest +
RES & heating
system
Boundary
conditions:+5°C; 20°C
Existing situation:
Uninsulated with new windows
• temperature of key surfaces = 9°C
• problem areas behind furniture, in corners and at lintel
• internal relative humidity must be less than 38% to avoid mould growth
EnerPHit retrofit:
20cm insulation + PH windows
• temperature of key surfaces greater than 16°C
• no mould problems, even behind furniture!
• internal relative humidity can reach 62% without fear of mould growth
Boundary
conditions:
+5°C; 20°C
Airtightness measures count
n50 after retrofit: 0.35 h61
gasket, external render
rendering (outside)
airtight film
You can achieve the same airtightness in a retrofit as you
can in Passive House new builds!
Ventilation is key
Ventilation always makes sense: when you remove humidity, you
lower the risk of moisture damage!
• an old building may have more remaining thermal bridges
• a retrofit will become much more airtight upon installing new windows
• occupants are not used to opening windows regularly
• if you install a ventilation system, use an efficient one!
An issue of economy
Annual paymentsThe annuity method
• Initial costs: €106/m² – €20/m² for
removal of old plaster
• Loan taken at 2.5% interest
• Payments over 30 years at 4.8%
per year (interest + principle)
• Total costs: €3.86 / m² and year
• Total savings: €6.79 / m² and year
n in heating
• Total profits: €2.93 / m² and year
Result: an 8% tax free annual cash return
€
Example: investing in ETHICS
Guaranteed, risk6free and
tax6free
return of 4 to 15% annually
for 30 years!
Attractive at current energyprices
Can it be done?
Examples of the past
SFH Groove Cottage, Hereford (UK)
Client: Andrew Simmonds and Lorna Pearcey, GB
Architect: Simmonds.Mills Architects, GB
Completion: 2009
Before After refurbishment 25 kWh/(m²a)
Listed office building, Rimbach (DE)
Client: Grundstücksgesellschaft Schlossstr. 9 Becker u. Martin GbR, DE
Architect: Peter Hinz, Planungsgruppe 7, DE
Completion: 2011
After refurbishment: 20 kWh/(m²a)
© Architect Planungsbüro Gruppe 7 GmbH & Co. KG
Before
© Architect Planungsbüro Gruppe 7 GmbH & Co. KG
Governmental offices 6 Expost in Bozen (IT)
Client: Provincia Autonoma di Bolzano+Alto Adige, IT
Architect: Michael Tribus Architecture, IT
Completion: 2006
Before After refurbishment 12 kWh/(m²a)
Thank you
for your attention
www.europhit.eu
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