Quality of the Works
Compared to past practice, the trend towards Nearly Zero-Energy Buildings (NZEB) implies:
- The correct execution of classical building works, in line with the NZEB principles of good workmanship (e.g., airtightness, correct execution of building nodes, …).
- The use of advanced technologies requiring specific skills of the workforce (e.g., use of RES in combined HVAC systems, advanced ventilation systems).
Therefore, to reach NZEB targets in practice, this observation calls to explore means to improve the quality of the works, which implies:
- To agree what is understood by ‘good’ quality of the works (indicators, performance levels, etc.).
- To guarantee the existence in the market of good products, as well as the existence of all required competences among designers and executors to deliver a good job.
- To define and guarantee boundary conditions allowing the various players to deliver the agreed quality level in economically viable conditions.
QUALICHeCk has focused on establishing good technical boundary conditions for quality of the works. It is thereby important to understand that technical requirements are a prerequisite for having a framework that allows compliance and effective penalties related to the quality of the works. In particular, it is crucial that there is no confusion in the market about the procedure(s) to be followed for showing the quality of the works, otherwise there is no solid basis for an effective sanctioning approach. On the other hand, the insights from these technical requirements are important boundary conditions for establishing an effective compliance and sanctioning framework.
The ultimate goal has been to stimulate the development of schemes to improve the quality of the works, taking into account the pros and cons of previous experience, with specific attention to boundary conditions and allowing effective compliance. The work has documented and built on successful initiatives to overcome site implementation issues that undermine the confidence in actual performance.
These initiatives include examples in the context of regulatory frameworks, quality labels, self-control or quality management procedures/guidelines, and training programmes.
This work has been led by the Fraunhofer Institute of Building Physics (IBP).
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