Inner pane has cracked top to bottom. UPVC double glazed unit, non-opening, about 2ft square. Is this something I can replace myself? How do I look at how it's fixed - can I take off the sealing bead, if I do will I need to replace it with new or can I use the old stuff? It's a year old, will both the internal and external panes be Pilkington(?) K?
Should I just get a glazier to do it?
Ta
Pete