Should You Leave Icicles on Your Roof or Remove Them? Experts Explain

While they may be pretty, the icicles that form on your roof in the winter are hardly magical—they can actually do significant damage to your property. "Icicles on your roof need to be dealt with cautiously, not simply left alone," explains home exteriors expert Tom Orr. "They present a number of dangers," he says—but there are risks in removing them as well.

Below, home maintenance specialists share the nuances of removing icicles from the roof so you can make the best decision for your own home this winter.

The Safety Risks of Leaving Icicles on Your Roof

“When icicles form on your roof, it’s never a good thing,” says professional roofer and contractor Michael Casolaro. Not only can icicles fall and hurt someone, but, as they slowly melt, they can make the ground beneath them extremely slippery. For commercial properties and homes with young children or seniors, Casolaro recommends being extra cautious. Removing icicles is always best in these cases. 

In addition to its safety risks, leaving icicles on your roof can potentially damage your roofing system. "When icicles start blocking your gutters," Casolaro explains, "water has nowhere to drain, it refreezes and backs up under your roof. That’s called an ice dam." Not only do ice dams cause damage to shingles, but they can also impact your roof’s underlayment and lead to leaks inside your home. "If ice begins to fill your gutters, or back up onto your roofing system, it’s always a good idea to take action," he recommends. 

Home maintenance expert John Salvatore Gelfusa agrees, adding that large icicles can also strain your gutters and drip edges, pulling them away from the home and causing them to bend, loosen, or detach.

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3 Ways to Address Icicles on Your Roof

Gelfusa urges caution when removing icicles. Dislodging larger icicles could cause damage to the gutters or roof. "If you can knock them down with a swipe of a broom, [that’s] fine," he says, "but if removing them means hitting or jerking the gutters, you cause more damage than the icicles could."

Gelfusa points out that removing large icicles by force could pry up the roof sheathing, leaving gaps that can let water seep into the home during the thaw. Additionally, roof shingles could be damaged as parts of them are torn away along with the ice.

Instead, opt for the gentler methods below.

A Roof Rake

According to Orr, a roof rake is a practical and effective way of removing icicles from roofs. "If there is a buildup of icicles, it is best to remove the snow from the roof using a long-handled roof rake," he says. "While standing on the ground, patiently let small drips melt naturally without climbing onto the roof or making direct contact."

Any insulation and drainage issues should be addressed and resolved to prevent the icicles from forming.

Heated Roof Cables

"If you consistently see icicles along your gutters, the eaves of your roof, or in lower-sloped sections, heated roof cables are a fantastic solution," says Casolaro. "They can be installed across the entire lower section of your roof, inside your gutters, or in targeted locations to control temperature and prevent icicles from ever forming," he explains.

DIY Melt Balls

If you find yourself dealing with icicles that have grown too large, Gelfusa recommends creating homemade "melt balls."

Follow his simple steps to DIY your own:

1. Cut the legs of a pair of thin pantyhose into eight-inch pieces.
2. Tie off one end of an eight-inch piece. Pour calcium chloride into the other side and tie it off. (It should look like a ball.)
3. Continue the process, making 10-20 depending on severity.
4. Toss the "melt balls" onto the roof, making sure some land in the gutter and others land higher on the roof.

The calcium chloride will dissolve through the pantyhose, melting the ice around it. From there, the icicles will weaken and should fall on their own—keep the area clear as they do.

How to Prevent Icicles From Forming

According to our experts, the most ideal way for managing icicles throughout the winter months is to prevent them in the first place. “Preventing icicles is the best long-term approach, and that begins with clean gutters, good attic insulation, and proper roof ventilation,” says Casolaro. “This ensures that as the snow melts, it melts evenly and the water has a clear path to drain off your roof.”

If you notice snow melting unevenly in different parts of your roof, you could have an insulation or ventilation problem that needs to be fixed. To address the icicles on your roof this winter, you will want to take all necessary precautions to minimize any potential danger to the inhabitants of your home and your home itself.