Haven't seen any of this forsale at the local BM.

[harryagain]

[polygonum]

But I have seen that (or something that is functionally extremely similar) in John Lewis.

A sample of refrigerator/freezer insulation.

[Andrew Gabriel]

I've seen it covered in the building press. It's basically double glazing, but with a vacuum, and a spacer to keep the glass apart. There's only a 1mm gap, as a larger gap is no advantage with a vacuum. The spacer was a grid of regularly spaced 1mm balls (or so it appeared), so it's not invisible. The glass panes can be thinner too, as they act together as one. This means it can be used in places which can't take even the thinnest double glazing.

[John Rumm]

Lets hope it lasts longer than your average sealed unit...

[Robin]

Just 0.2mm in some Pilkington stuff

Pilkington claim just 6mm overall. I'd need to win the lottery first as it ain't cheap but I know someone whose been looking at it as he reckons it his best bet to get double glazing into a listed property (or at least where period glass has already been replaced by float).

And I'm told you can tell when it leaks as its balls drop. I don't know if it then starts squeaking funnily as well when washed:/