On Jul 6, 12:45*pm, Nick wrote:
About 20 minutes ago the inside pane glass of my patio door glass
spontaneously shattered with a huge bang. It is still gently crackling.
The door is 20 Years old. It is aluminium sliding and still opens ok, so
it cant have been stress from the frame.

Any ideas what happened.


Was it the fixed door or the moving one? It might be subsidence and
the fixed door coming under slowly increasing stress and the
eventually shattering. if it's the moving door then it can't be that
becuase it would get stiff first.

i've seen this happe nat work and it is very alarmning - a big bang
and then a pile of granules of glass. Sometimes they stay intact but
turn to a mosaic of small fragments.

Robert