I have slowly but surely been building and improving my coop over the past few months but can't make up my mind on which roofing material to use. It is 4'x6'. I don't really want to do shingles as they can be heavy and we plan on moving in a year and want to be able to easily transport it. I was thinking of using metal roofing sheets or would prefer a clear roofing sheet (not sure the proper name but is sold at Lowes next to metal roofing sheets) to allow light in during winter. My concern is that the clear roofing material will not help retain heat during winter. Note there will 6" of mesh screening for air flow on one side of the roof for ventilation. We live in north Texas above Dallas and winters can vary greatly year to year. Most of the time we have only 2-3 days of snow but many nights are in the low 30's. Is metal better than clear plastic? Again we would like to let as much light in as possible as our backyard is mostly shaded from trees.