Snow and Ice Roof Damage: What to Watch For | EPHI

Roof Edges Are Vulnerable

Roof edges deal with the first freeze-thaw cycles and the heaviest concentration of snowmelt. Small issues in flashing, drip edge, or ventilation can become more noticeable when water repeatedly freezes near the eaves in snow and ice areas.

Ice Dams Can Push Water Back

Ice dams can form when snow melts higher on the roof and refreezes at the colder edge. The backed-up water may work under shingles or into vulnerable roof details if the conditions continue.

Gutters Can Bend or Pull Away

Ice adds weight to gutters and can loosen hangers, stress fascia, or change the gutter slope. Overflow during a thaw can also point to drainage issues that deserve attention once weather improves.

Fascia and Soffit Need Attention

Repeated moisture behind gutters can damage fascia, peel paint, soften wood, and affect soffit areas. Repairing the water-management issue along with the damaged trim helps prevent the same problem from returning.

Snow and Ice Roof Damage:

• Heavy Snow and Ice Accumulation Collapses Trusses: The sheer weight of heavy snow and ice buildup puts massive structural stress on your roof trusses and rafters. When winter storms deliver consecutive rounds of frozen precipitation, the load can quickly exceed your home framing limits. This extreme weight causes structural sagging, cracked ceilings, and can lead to a catastrophic roof collapse.
• Melting Cycles Create Destructive Ice Dams: Freezing winter weather combined with poor attic insulation allows heat to escape, melting the bottom layer of snow on your roof. This water runs down the slope and refreezes at the cold eave edges, creating a solid snow and ice ridge known as an ice dam. This barrier traps water behind it, forcing liquid up under shingles and directly into your ceilings.
• Repeated Freeze Thaw Cycles Split Modern Shingles: Water from melting snow and ice seeps deep into microscopic cracks and seams within your roofing materials during the day. When temperatures drop below freezing at night, this trapped moisture expands forcefully as it turns back into solid ice. This continuous expansion process rips apart asphalt shingles, loosens protective granules, and widens existing leaks.
• Clogged Drainage Systems Tear Away From Fascia: Frozen slush and heavy icicles fill up gutter channels completely, blocking the path for safe drainage. The immense weight of this trapped snow and ice puts severe downward pressure on aluminum brackets and wooden fascia boards. This strain causes gutters to twist, pull away from the roofline, and smash down into landscaping below.
• Improper Snow Removal Destroys Protective Shingle Granules: Using sharp metal shovels or heavy rakes to clear off thick snow and ice can cause immediate, severe damage to your roof. Scraping the surface forcefully gouges the roofing membrane and strips away the protective mineral granules that shield shingles from sun rays. Using professional roof rakes carefully keeps your home safe without ruining the underlying structure.

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