Get matched with top roof ice and snow removal pros in Saint Johns, AZ

How much snow can a roof hold? The answer could help you to avoid roof collapse—a worst-case scenario, of course. For most roofs, you can expect it to withstand four feet of fresh snow, two feet of packed snow, or two to three feet of a mix of old and new snow. However, your roof will only be able to handle one inch of ice. The actual weight capacity of your roof may vary, so check with whoever built it for exact details.

While it’s less common than on other kinds of roofs, yes, ice dams can form on metal roofs. Metal roofs, particularly those with snow guards installed, can still accumulate ice at the roof edge, although ice dams on metal roofs are less likely to cause roof or interior damage than on traditional asphalt shingle roofs.

While most people associate defrosting icy roads with salt, you can also use sugar for a similar result. Sugar lowers the freezing point of water, melting ice in a pinch.

However, sugar doesn’t melt ice as well as salt because it doesn’t separate the water molecules as efficiently. So, if you need to quickly melt a stubborn patch of ice on your driveway or walkway, it’s best to use salt over sugar for faster results.

Heavy amounts of snow could be a problem. In many climates, lots of snow on your rooftop can lead to freeze-thaw cycle that create ice dams, which can damage rooftops. But if you’re using shingle clips, this snow poses an additional problem: As it melts and freezes, it can easily dislodge clips you’ve placed on your roof.

You can clean snow off your roof after a fresh snowfall while it’s still lightweight, but brushing off snow can also dislodge your clips. If you get a lot of snow, then roof clips become less viable.