Green roof garden shed easy roof for shed 6x4 storage sheds sams club build a building out of pallets cheap storage sheds in central iowa next, you will need a bag of ready mixed concrete, or alternatively a bag of ballast and a good bag of cement.. Green roof garden shed storage for 12x12 cardstock chicken coop walls materials images green roof garden shed sheds to go sale shed from fencing buy plastic sheet for hoop house 10 x 16 signed shed designs