pole shed questions

roof metal comes in 26 or 29 ga. there is a difference in the warranty in years. some guaranteed for 10 years, some much longer. talking about painted metal. then there is galvalume. metal can be installed with ring shank roof nails or screws. a small difference in cost of each and labor for each type.

if I remember your yard is pretty flat. I would guess a few loads of fill dirt or pea lime. yes the pole builders want a level spot. around here, generally roll insulation under the roof tin, more like a vapor barrier.

I would think about thick plastic under the concrete, or under gravel if you use that for the part that doesn't have concrete, to keep cold from the concrete and moisture from the gravel.

we have a lot of Menninite and Amish, they build a lot of barns and do excellent work. honest people too!