Laminated glass for a roof
The foil in the laminated glass ensures that the glass remains attached to the foil in the event of breakage, there is no opening in the glass and no glass falls down. That is very safe if you want to use this glass as roof glazing for a conservatory, canopy or skylight.
Determining the required glass thickness for roof glazing is not that easy. You have to deal with all kinds of variables such as: what is the size, what is the span, on how many sides is the glass supported, what is the angle of inclination, what is the wind direction the glass faces, is it a public building or private etc. etc. For the right advice you should actually have a glass thickness calculation made by, for example, a calculation agency. Unfortunately we cannot make this calculation for you, that is something you would have to organize yourself.