we are in Chicago,Ill . last night, very cold! our kitchen window, double pane tilt in kind,(that's all we know about windows)shattered, only the inside pane, there was a thin layer of plastic(like saran wrap)between the panes also, not a hole or tear in it. What happened, is there something else going on? 1954 slab ranch.http://advice.thisoldhouse.com/images/smilies/eek.gif
Re: window shattered
If it is young and tempered, it could be "spontaneous breakage". If not, I would look to your kids.