On 8/12/2020 9:13 AM, Sonny wrote:
6" is sufficient for that span. If you have 8" 2Xs, use that.

Sonny

I would think that more information is needed. How big is the shed?
You have said there are lofts. Are they over the windows? or is the
window in the side under the loft. Is it the gable end or a side?