Roof consists of a flat surface, a water and vapor tight cover, heat insulating material made of extruded polystyrol, and a wind protection layer.

摘要

A roof consists of a flat surface (1), a water and vapor tight cover (2), a heat insulating layer made of extruded polystyrol foam plates (3), a cover (4), and a wind protection layer (5). The heat insulation layer consists of at least two layers (3a,3b), and the upper surface is structured and has raised and lowered areas.