It seems entirely reasonable. Just make sure there is a gap at the top and bottom for air movement and don't forget the insect net at the gap.
No wind paper or type of plastic is needed on the warm side?
Yes, you probably should have that... I was focused on the top side so I didn't think about it...D Derbyboy said:
Here lies a vapor barrier on the warm side. I really don't know if it will be good. The idea is to keep only 5-6 degrees during the winter months.
It is typically moisture from the inside that you want to prevent from creeping through the insulation and reaching the dew point (when the air becomes cold enough for moisture to condense), which creates mold problems. You can also use a so-called vapor retarder that doesn't completely stop moisture but mostly stops drafts. It is usually used in conjunction with cellulose insulation or other "natural" insulation materials (flax/wool/etc.) that can absorb moisture and release it, unlike fiberglass.
If it's -20 outside and +5 in the shed, there's a big temperature difference that can create moisture problems. On the other hand, you might not have anything generating moisture in the shed, so the problem might be small...
If it's -20 outside and +5 in the shed, there's a big temperature difference that can create moisture problems. On the other hand, you might not have anything generating moisture in the shed, so the problem might be small...