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Homeowner guide

Ice Dams and Gutters: What South Dakota Homeowners Should Know

Every South Dakota winter, ice dams tear gutters off houses and push meltwater under shingles. Understanding the mechanism is the first step to preventing the damage.

What actually happens

Heat leaking from the living space warms the roof deck; snow melts high on the roof, runs down, and refreezes over the cold eaves. The ice ridge grows, meltwater ponds behind it, and water finds its way under shingles and into walls. Gutters full of frozen debris anchor the ice and add hundreds of pounds of load on the hangers.

What actually prevents it

• Attic insulation and air sealing — the root cause is heat loss, and this is the fix that works.
• Attic ventilation that keeps the roof deck cold.
• Clean gutters before freeze-up — debris-filled gutters become ice-filled gutters.
• Heated cable in problem valleys and eaves — a mitigation, not a cure.

What doesn't

Gutters don't cause ice dams — removing them doesn't stop dam formation, it just changes where the water lands. And chipping ice off shingles does more damage than the ice. If water is coming in now, steam removal by pros is the safe route; the permanent fix happens in the attic.

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