Why are there icicles on your siding?

Icicles on siding typically form due to a combination of heat escaping from the home and melting snow or ice on the roof. When warm air rises and warms the roof, it causes snow to melt, which then runs down and refreezes at the colder edges, creating icicles. Poor insulation or ventilation in the attic can exacerbate this issue. Additionally, ice dams can form, leading to water pooling and further icicle formation on the siding.