05/06/2026
❄️ What Causes Ice Dams on a Roof?
Many homeowners think ice buildup is only caused by snow — but attic ventilation and insulation play a huge role too.
Here’s what happens:
1️⃣ Heat escapes from the attic
2️⃣ Snow on the roof starts melting
3️⃣ Water runs down to the colder roof edge
4️⃣ It freezes again and creates an ice dam
🚨 This can lead to:
- Roof leaks
- Water damage inside the house
- Gutter and soffit damage
- Mold and insulation issues
💡 Proper attic ventilation and insulation help prevent this problem by keeping the roof temperature more consistent.
A properly installed roofing system is not just shingles — ventilation matters too.
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