Ice dams may be more common in colder regions, but their structural effects on roofing shingles — particularly along the edges — are relevant for property owners everywhere. In Kerala, while snow-related ice dams are rare, similar water-retention problems from heavy rains and temperature fluctuations can cause comparable deterioration. At Scaffs India, we’ve seen how edge damage can drastically reduce shingle lifespan if left unaddressed.
How Ice Dams Form
In colder climates, ice dams occur when rooftop snow melts, flows toward the eaves, and refreezes. This creates a frozen barrier that traps water. In tropical conditions like Kerala, heavy rain combined with poor drainage can mimic this effect — pooling water near the edges of shingles.
Impact on Shingle Edges
Whether caused by ice or rainwater stagnation, prolonged moisture contact at the edges can lead to:
Granule Loss – Weakening UV protection.
Asphalt Softening – Accelerating brittleness.
Sealant Strip Failure – Compromising wind resistance.
Homeowners using architectural roofing shingles or premium designer roofing shingles often underestimate edge vulnerability.
Preventive Strategies
Proper Attic Ventilation – Keeps roof temperatures consistent.
Drip Edge Flashing – Directs water away from shingles.
High-Performance Underlayment – Adds a moisture barrier beneath shingles.
Quality Shingle Choice – Products like Armourshake Roofing Shingles or Dynasty Roofing Shingles offer advanced edge protection.
The Kerala Context
While the threat here is less about freezing and more about monsoon-driven saturation, the long-term deterioration pattern is similar. Partnering with a roofing expert like Scaffs India ensures that your roof edges remain resilient against seasonal stress.