As a contracting body or project manager, it's vital to choose your contractors carefully. While certifications such as ISO 9000, VCA, BeSACC, etc. do provide added value, none of them actually assesses the level of capability and know-how of the technicians, the design quality of the systems installed or the quality of the products deployed. It is on these elements that the BOSEC quality label focuses.
You should therefore ensure that your contractors possess BOSEC and/or BENOR certifications, or ISIB approval in the case of installing fire doors, as these are essential for the correct completion of your work.
Discuss it with you architect or consultancy firm A recognised brand