4. Roof tiles and the HQE® approach

4.1 HQE® approach – Fourteen targets

The HQE ^® approach is a dynamic one: it involves all players in the built environment in the quest for both a better quality of life and the preservation of the planet. It responds to the two major challenges of the early 21st century. xxi ^e century: a growing desire for greater comfort and security on the one hand, and control over the use of natural resources and energy on the other.