A pigeon has just crashed into the window beside me and managed to fly off, the window is broken. It's a 46mm by 88mm pane set in a fixed metal casement with only 20mm rebate. Before I replace the glass I thought I'd just ask if there were any point in trying to replace with a double glazing unit, plainly there's not enough depth for a wide gapped unit nor for traditional putty fixing. Also I think double glazed units need to be able to "breathe" so they cannot be set in putty??
AJH