Paging @Tintguy1980
I don't think it's going to work better myself. It's still going to heat and reradiate both ways. Maybe the wind has a slight effect since the outside surface may be a tad hotter than the inside, so maybe it would.
Does seem questionable Dano, but no links, which they usually drop if they are spamming. None of the IPs match, so it's not one guy. I'll def keep an eye on these accounts. Thanks @Dano!
That looks like defective film to me.
If it was contamination, or something wrong with your slip, it would look more random and spotty, not all through the film like that.