[jaccola]

I think this is the stated lifetime of insulated windows. But obviously single glazed windows were never insulated in the first place so there is no practical lifetime on them...

In my house and on my road a lot of the glass is 150+ years old.

[fmlpp]

Haha. Made of what? Come on, around here there are plenty of wooden doors and windows 70-100 yo and this is a humid climate.