Ice dams remain the most persistent threat to Vermont's high-end residential roofing assets, causing billions in structural damage annually.
Understanding the thermodynamic cascade that produces ice dams is the first step toward engineering a permanent solution that protects both the roof assembly and the interior environment.
The Thermodynamic Mechanism
Ice dams form when heat escaping from the interior warms the roof deck, melting snow at the ridge while the eaves remain cold. The resulting water refreezes at the overhang, creating a dam that traps subsequent meltwater behind it. This trapped water can penetrate under shingles and into the structure below.
Precision Ventilation Strategies
The most effective ice dam prevention combines sealed attic air barriers with balanced ridge-and-soffit ventilation. By maintaining the entire roof deck at outdoor temperature, we eliminate the temperature differential that drives ice formation. Our proprietary baffle systems ensure uninterrupted airflow even in complex roof geometries.
