Interactions in the renovation process

From previous research (LEHR), it became clear that ‘in the field’ or on the renovation site better communication and cooperation is needed. Especially in striving for nearly zero energy buildings, aspects such as: air tightness, thermal bridges, correct dimensioning of ventilation and heating are very important. When executing a certain task, it is possible that it disturbs work already done; for example destroying the air tightness layer. On the other hand, certain tasks may lead to problems further on (not foreseeing future connections) or can already during their execution facilitate future renovation tasks.

This means that every activity executed during the renovation process should take into account the work already executed and the current situation on the one hand, and also keep in mind tasks that will be executed later on in the process. All tasks should fit into an integrated, global concept.
In order to deal with these challenges, the different points of attention and interactions between the different professionals in the renovation project were mapped in a document. In first instance a methodology to create this list of ‘potential problems’ or rather ‘interactions’ was established. The elaborated list of points of interest then served as a basis for solution development.
You can read and download the document here (pdf). 
Following this document, two workshops were organized in Belgium. One workshop dealed with the interactions in the renovation process, another was more specific on ensuring the air tightness when installing new joinery in a renovation.
You can find the reports of these workshops here:
- Interactions in the renovation process:  
- Air tightness when renovating joinery:  
The research done on this subject was also presented at the Passivehouse Symposium of 2011.
You can read the paper below.
Execution of very low energy renovation through an integrated approach and application of new technology  (Presentad by Jeroen Vrijders at the Passivehouse symposium 2011)