It looks too simple, most person knows it’s similiar as a glass window which installed on roof.

In the dictionary, a skylight is defined as ‘a window set in a roof or ceiling at the same angle’ and because the term ‘skylight’ is so broad, it can be used in the pitched roof sense as well as the flat roof sense when it comes to talking about them. Read more “What’s Glass Rooflight/Skylight?”