Yes, if your roof is in stable condition, you should be able to hang Christmas lights from the eaves. Hang Christmas light directly from the eaves for best results, using light clips or an alternative type of adhesive. When installing lights on your eaves, be sure to work carefully and avoid adding too much weight or pressure to them.

No one has figured out a perfect solution to this problem. Tying icicle lights down or adding weights to them can help, but it’s a very time-consuming process and far from foolproof. If your winters are too windy, we suggest simply switching away from icicle lights to straight runs of non-dangling lights along the edge of your roof.

How many string lights can be on one outlet depends on a number of varying factors, including the total wattage of your circuit, the type of lights, the energy needs of the lights, and cord specifications. It’s better to play it safe here to protect your circuit, so figure out the max wattage of your circuit, compare that to the lights, and move on from there. Generally speaking, LED string lights require less energy than incandescent bulbs, translating to a higher number of lights per circuit. 

In the Christmas days of yore, people braved winter weather to staple or tack their Christmas lights onto their rooftops or nearby surfaces like the fascia boards. Problems quickly emerged with that approach. Damage to the roof, even small marks from staples, provides entryways for moisture and similar issues that can hasten roof rot, wear, and associated leaks. Plus, some homes had tough fiber cement boards or other materials where staples and screws didn’t work.