I want to store several tons of bagged coal on pallets over several years. If I cover the pallets of coal under a tarp do I need to put down treated wood under the pallets? I also have landscape fabric I could put over the dirt and then the pallets on top of that. Or would I be wasting my time since the tarp will keep the wood of the pallets dry. I also bought a special tarp to block out UV's and the bagged coal will be in the shade. I hope this will keep the bags from detoriating. They are made from fabric but the sun will detoriate them.
Thanks in advance