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It can be frustrating to see one half of your lights working while the other half is dark. Long strands of Christmas lights often contain more than one circuit. If half of your strand won’t light up, there’s likely a burned-out or loose bulb on that circuit in the strand. Check the strand and replace any loose or damaged bulbs. 

There are many types of Christmas lights to choose from when working with a light installer. The main types available for outdoor lighting are dome, LED, incandescent, and C9, and your lighting professional’s choice will depend on the location and overall design. 

C9 lighting is typically the most expensive option, ranging from $15 to $70 per 25-foot strand. These usually have fewer bulbs per strand, so you might need more than expected to cover a large area. Dome lighting is usually the most cost-effective option, ranging from $6 to $15 per 25-foot strand. These bulbs are smaller and rounder than other options, creating a softer look.

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.

While it’s a somewhat common method for hanging Christmas lights, using a staple gun is not safe for your roof. Poking any kind of hole can potentially damage your roof and expose it to the elements, whether it’s from nails or a staple gun. Shingle tabs are the best way to hang lights on your roof without the damage.