171–172 of 172 posts
Earlier quoted context omitted.
Thanks for the correction/clarification.
I'm boggled people would downvote this; I would have noted mikestew's point about The Maine Woods in my original post if I could have still edited it.
Earlier quoted context omitted.
Thermal insulation, whether we're talking about a blanket, a winter jacket, or the foam stuff in your walls, generally involves a layer of some thickness within which there are many tiny spaces full of trapped air. It's difficult for heat to propagate across those spaces. The author's point is that mylar emergency blankets do not provide this thick layer of "trapped air". It's true that they prevent air from crossing…
You'd be surprised how hot surrounding oneself with mylar gets. I've been inside a grow tent lined with mylar, and even though it was open on one side, it felt like a sauna within minutes!
The main problem with these solutions AIUI is the trapped humidity.