If you've seen thick icicles hanging from your eaves during an Iowa winter, you've seen the warning sign of an ice dam — one of the most common and destructive cold-weather roofing problems in the Midwest. Here's what causes them and how to protect your home.
An ice dam is a ridge of ice that forms at the edge of your roof and prevents melting snow from draining off. The water that backs up behind the dam can work its way under your shingles and into your home — causing leaks, soaked insulation, stained ceilings, and even mold.
The root cause is uneven roof temperature. Heat escaping from your living space warms the upper part of the roof, melting snow. That meltwater runs down to the cold eave, where it refreezes. Over a long Iowa cold snap, the cycle builds a dam. The biggest contributors are poor attic insulation and inadequate roof ventilation.
A quality roofing system installed with proper ventilation is your best long-term defense. If ice dams keep coming back, the fix usually lies in your roof and attic, not just the symptoms.
Don't chip at the ice yourself — you'll likely damage the roof. Call a professional. Passion Exteriors offers free inspections and roof repairs across Dubuque, Cedar Rapids, Iowa City, and Eastern Iowa.
👉 Call (319) 536-1924 or request a free inspection.
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