One of my stacks (a row of pallets 40 x 48") had a real bad lean on one side. During Irene it partially fell over. We got about 7.5" of rain here. Today (2 days later) ,I went out and knocked the rest of the leaning part over and restacked. ALL of the wood was dry.
Kind of solidified my thoughts on the need to cover or not....
Kind of solidified my thoughts on the need to cover or not....