Glazing Vision Guide to Rooflights & Roof Windows

Rooflight or roof window?
The simplest way to answer this question is to first consider the roof type that your product is going to be installed; is it a flat roof or a pitched roof? In most cases a rooflight will be installed on a flat roof or terrace and fixed to an upstand or kerb with a minimum pitch of around 3-5°
Roof windows are usually installed on a pitched roof of 15° or more; normally these are designed to allow installation up to a maximum 60°, with some products being able to be fixed up to 90°.