A week ago I began pulling snow off the hay shed roof, up to 4' deep tapering to over a foot. Gotta be careful when removing the weight, just some of one part then go to the other side and remove same amount, back and forth. Otherwise the roof is liable to collapse. I didn't get quite all of it off as I couldn't reach it from the ground. My ladder was under that roof and I wasn't going in there. Yesterday brought about an inch of wet snow but I'm not worried about the roof. It's metal and already melting today with the sunshine.