R-value?

[Yogurt]

Hi YurtInTheWoods, sorry for your troubles, and I hope things are well with you now. Here are some alternative thoughts on the problems you had.

1: The manufacturer didn't treat the wood as well as they should have. Possibly didn't sand it well enough either (more surface area, more exposure to nature). Might have been a more edible wood as well.

2: The mold spores may have survived while the mycelium died; add water and you'll have mold in a hurry once again.

3: The extra heat accelerated the mold growth.

4: Radiant barriers work best with less contact; they act as thermal conductors when touched, and the growing snow drifts were pressing everything against it, making them less effective, melting extra snow.

5: Water from the large amount of snow outside was being wicked inside. That could be the reason there was so much water despite the dry indoor air. Probably a "waterproof" fabric, but maybe not entirely. Though, I know you said it was worst without the snow.

Was the radiant barrier perforated? Or could water work it's way around the edges of the radiant barrier?

I hope your health and happiness has recovered. And if possible, I hope the manufacturer helps you recover your losses.