karl.jonas
2022-03-02 17:38:29
- #1
Hello, I would like to build with a roof structure visible in the upper floor, a flat pitched roof without an attic. Which roof pitch is sensible (with an intended covering of tiles), and why? Is the following correct, and are there further aspects (in NRW)?
- [*]at least 15 degrees if roof windows are to be installed (writes Velux); [*]at least 22 degrees to achieve rain protection (writes dach.de) ("classical flat roof tile"); [*]30 - 45 degrees are optimal for photovoltaics or collectors (writes Thomas Königstein).