In an earlier contribution to this discussion,
AJH wrote:

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

That's a hellish small pane - under 2" x 3 1/2" in real money! Are you sure
you don't mean cm rather than mm?
--
Cheers,
Roger
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