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.

Christmas trees need about 100 lights per foot, so you would need 700 lights for a 7-foot tree. 

You can attach Christmas lights to your palm tree by securely wrapping the strings around the tree. If you notice the strands slipping, you can also use a staple gun to secure them to the trunk.

The most likely cause of accidentally flashing lights is that a regular bulb has been replaced with a flash bulb by accident. If that’s not the case, you should look for a bulb on the strand that is not quite seated properly and will lose its connection when it’s touched or moved.