The negatives of tarps are they blow away, the ice freezes on top of them, the tarps rip. I have had good luck with the rubber roofing cut to size, but amazingly the wind can still lift them even with heavy splits on top, but are a lot better than tarps. I think the most important thing is keeping the wood off the ground on pallets or saplings. I cover about 10 cords with rubber roofing, the rest is uncovered. A woodshed is in my future, but it has not been too bad with the rubber roofing material.I've read a lot of reasons on the positive aspects of covering but I've never really read any negatives? Are there any that you've all discovered?
Surely not financial, as it seems to me tarps can be bought at Dollarama for well... a dollar, and used tin roofing can be found near any derelict barn.