Originally Posted by
John Arnold
If no markings you have to assume it's not safety/tempered.
Either that or use the ball peen hammer test ... you know, the one which verifies that it WAS safety glass or that it WAS not safety glass.
The markings are required to be visible after glazing, so, if the markings are not there, 'it is not safety glazing as required by the code' (which means it could be safety glazing, but not *as required by the code* - which stops the arguments from the builders end).