Frozen gutter pipes can prevent water from draining from your trough or internal plumbing system. Sometimes it can even split open aluminum pipes at the seam. To help prevent this from happening pouring some road salt down the pipe can help dislodge some of the ice. You can them simply tap the pipe with a piece of wood and the ice should come out.
Commercial flat roofs might suffer over the winter, especially if you haven’t made any preparations. It could develop problems as a result of ongoing exposure