On 26 Nov, 17:05, Ryan_Hudson Ryan_Hudson.
wrote:

Anyone got any experience with this product?
http://www.thermilate.com/

Good (with provisos, see below) experience of similar products for
special purposes - although mixing is crucial, so buy the stuff as
paint rather than an additive powder, unless you're going to be
careful with mixing it.

It reduces _radiant_ heat transfer, which is the only sort of transfer
you're going to affect with a thin coating like this. It probably does
a tiny bit for convection but sqrt() sod-all for conduction. Then
remember the Stefan–Boltzmann law and the fact that radiant flux is
proportional to the fourth power of temperature (or else get Dennis
the Physicist to explain it to you).

So if you've got a big hot thing that's unpleasant to sit in front of,
like a kiln or an oven, then it might be useful to paint it with this
stuff and reduce the radiant heat. But it won't replace lagging your
loft.