Stuart Noble wrote:
You've obviously never watched a glazier puttying a window. It is
precisely because it's so cheap and fast to apply that they continue
using it.



The is a glazier who is doing it day in and day out. We mere mortals
only put the odd pane of glass in and silicone is the easy way out.


Putty has had its day. It is obsolete because its so difficult to
remove

Not half as difficult as silicone. Glaziers won't touch windows where it
has been used

Glaziers are not DIY men. We are.