Try to remove snow asap from your roof. Snow puts a lot of pressure on your roof and too much of it can cause your roof to collapse. When the snow melts, it creates ice dams. Ice dams can form around your gutters and prevent water from draining from your roof and can clog the gutters. It can even cause a leak in your roof. You can climb onto your roof with a shovel and shovel off around 3 ft of snow to reduce pressure on your roof. While this is a good idea, it is best to hire professionals to remove it because the roof could be slippery.