1. Regulations, basic functions and standardization

1.1 Regulations

In view of their role in building enclosures, windows are covered by a number of regulations, not all of which have the same scope:

• Laws, decrees and orders whose application is mandatory for the field of application.

• Texts drawn up on a consensual basis by all the professionals concerned: standards and Unified Technical Documents (DTU). Their application is mandatory for constructions in which the State is directly or indirectly involved (through a financing subsidy, for example). For purely private constructions, their application is only contractual. However, in the event of a dispute, and in the absence of specific specifications for a given project, experts...