On 18 May 2006 02:42:15 -0700, a particular chimpanzee named
"sm_jamieson" randomly hit the keyboard and
produced:

They used ISO super 9 style foil/fleece insulation in a loft conversion
on DIY SOS last week.

Is this stuff proven,

The jury's still out on that one. The company claim (or used to
claim) that the test rig with Tri-Iso Super 9 they set up in the south
of France used no more energy to heat than one with 200mm Rockwool.
The rumour is that the test was carried out in the middle of the
summer, so the test was meaningless. The certificate for this
material was withdrawn in February.

and would the BCO pass it ?

The certificate for Tri-Iso Super 10
(http://www.tri-isosuper10.co.uk/) appears to be a bit more explicit,
and as it's been issued by TRADA, it should be accepted by Building
Control.
--
Hugo Nebula
"If no-one on the internet wants a piece of this,
just how far from the pack have you strayed?"