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D3.2: Validation report of lowered embodied energy at pre-fab renovation projects


P2Endure is a European research project funded under the EU programme H2020-EE-2016-PPP (supporting accelerated and cost-effective deep renovation of buildings through Public-Private Partnerships (EEB PPP). The project aims to improve the availability and performance of energy saving solutions for deep renovation and transformation of vacant, obsolete or sub-optimal public buildings into dwellings promoting evidence-based innovative solutions for deep renovation based on prefabricated Plug and- Play systems in combination with on-site robotic 3D-printing and BIM demonstrated and monitored at 11 real projects, 2 virtual demonstrators in 4 geo-clusters with EU-wide replication potentials. 

This report summarizes how P2Endure contributes to the lowering of the Embodied Energy (EE) of the demonstrated renovation methods and how solutions affect the Embodied Energy of the renovation process. In order to convincingly present benefits of the project, Embodied Energy assessment is performed on selected demonstration sites: Warsaw (PL), Gdynia (PL), Ancona (IT), Menden (DE), Lekkerkerk (NL) and Utrecht (NL). 

Validation and optimisation is to provide tools and methodologies to control, guarantee and verify the expected performance in terms of energy, environmental impact, Indoor Environmental Quality (IEQ), time and cost efficiency. According to the recommendations of the IEA-ABC-Annex57 the methodology of the ICE-database from the University of Bath is used to calculate the improvement of the Embodied Energy (EE) by the P2Endure solutions. Analysis of the Lowered Embodied Energy is made through the comparison of two renovation scenarios: 1) P2Endure technologies and approach and 2) traditional renovation that would be applied if the P2Endure renovation would not take place. The improvement of the EE about of 5-43% compared to traditional renovations is mainly caused by avoiding using bricks and using gypsum plate material. On the other hand, traditional renovation methods are often with wood and bricks or plaster cladding that has low EE. Nevertheless, these methods require a lot of labour. As a result, in some cases the improvement is less or marginal (< 5%) because stiff materials (e.g. steel and polystyrene) are used to make the transportable. 

The results show also that there is a need for new construction materials that avoid intensive labour with respect to concrete, bricks and wood. A good example is the demo case of single family houses in Lekkerkerk (NL) which uses the Cocoonz façade with polyesters as construction material. In the future work, besides the EE, also the scarcity end reusability related to a circular building construction economy should be taken into account. This report is dedicated to architects, pre-fabrication specialized companies and construction companies interested in designing PnP-solutions with low EE. Moreover, also chemical companies that produce construction materials should be interested to see and to be inspired how new construction materials effect the EE in building renovation solutions. ​

André van Delft
DEMO Consultants B.V.
Delftechpark 10, 2628 XH Delft
The Netherlands
T his project has received funding from the European Union’s Horizon 2020
research and innovation programme under grant agreement No. 723391.