This past winter, I had some ice build up on my roof. Eventually it slid down the top front dormer and crashed on to the porch roof below. Big 50 pound chunks of ice. It was like cannonballs dropping onto my porch roof. The ice broke the rafters, and the windows, and the porch had seperated from the house, so it was shot and I had to remove it. Insurance more than paid for it. Above are the before and after shots, I just took them yesterday.