Upscaling the housing renovation market through far-reaching
industrialization
INDU-ZERO
Ulla-Britt Krämer
15-12-2020

Green Deal Europe
Clean,
Reliable
and
Affordable
energy
Achieving
Climate
Neutrality
Take everyone
along
(Just Transition
Mechanism)
Sustainable
transport
Farm to
Fork
Preserving
Europe’s
natural
capital A Zero
pollution
Europe
Transition
to a
Circular
Economy
Financing
the
transition
Towards a
Green CAP

Green Deal Europe
Achieving Climate Neutrality
• 2030 – 55% CO2 reduction
• 2050 – CO2 neutral
Buildings responsible:
 40% energy consumption
36% greenhouse gas emissions

Green Deal Europe
Achieving Climate Neutrality – Renovation wave
• 2030 – 35 million buildings renovated
• 2050 – 152 million buildings renovated
Need for an industrial approach at lower costs!

The project

Background
• Interreg NSR
• 4,4 Mln
• July 2018 - December 2021
• 14 project organisations
• 6 countries (NL, D, BE, S, N, UK)
• 6 members advisory board

Partners and advisoryboard members

INDU-ZERO in a nutshell
• Blueprint for a high-tech building factory
• 50% of the current price for a Net Zero renovation
• 15.000 renovation packages/year per factory
• Employment for about 260 people/factory and 300 people on
building sites

Clients &
Housing stock

Housing associations and real estate owners

AppartmentSemi-detachedTerraced
3 archetypes

Renovation packages

Note: U-value is equal (0,24W/m²K)  No differences due the environmental
impact of the energy use
Life cycle analysis
Selection of renovation system
Glass fibre polyester
Glue
Oriented strand board (OSB)
Glue
Expended polystyrene (EPS)
Glue
Glass fibre polyester
Base plaster
Glass fibre reinforcement
Cover plaster
Glue
Stone wool
Oriented strand board (OSB)
Timber frame + stone wool
Fibre board
Cavity structure
Fibre board
Base plaster
Glass fibre reinforcement
Cover plaster
Sandwich panel Timber frame
panel

LCA -Selection of renovation system
Comparison between the environmental impact:
– Slight preference for sandwich panel

• Sandwich panel is favoured over timber frame panels
– The difference in environmental impact between both is small and strongly
depends on the materials that are used
• OSB, glass fibre polyester and EPS are the main
contributors in the environmental impact of the
sandwich panel
LCA study - Conclusions

Development of the renovation packages
Facade
(sandwich panel with EPS)
Roof
(sandwich panel)
Including:
• Ventilation &
• Heating
systems

Development of the renovation packages

Impression of the Smart
renovation factory

Net Zero Factory Design
• Factory: 8 ha
• Surface: 20 ha
• Incoming &
outgoing
logistics ≈ 90
trucks per day

22
INDU-ZERO – a logistical challenge
How do we handle 96 truck arrivals per day?
Smart Factory
Supplier A
Supplier B
Supplier C
Supplier …
Building Site A
Building Site B
Building Site C
Building Site …
46 incoming trucks 55 produced dwellings 50 outgoing trucks per day

On-site mounting

On-site mounting
• Goeal: renovation
ready within 3
day
• Tenants can stay
at home
• Preferably no
scaffolding

Examples of renovations

Before and after renovation

Before and after renovation

Boundary conditions &
after INDU-ZERO

Boundary conditions
• Asset management from housing associations and home owners
• Legislation

After INDU-ZERO
• Development of some new:
Products for net Zero renovations
Machines for the renovation factories
• Automation of the on-site mounting process

Future perspective

Future perspective

Take home message and
questions

Take home message
Industrial Net Zero renovations for half the
current price!
https://northsearegion.eu/indu-zero/
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Ulla-Britt Krämer