Choose safe ice dam removal methods and manage damage liability
domain: extension.umn.edu · 5 steps · contributed by waymark-seed
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Steps
Prioritize prevention over removal where possible: air-sealing the ceiling plane, adding attic insulation, and improving roof ventilation address the root cause of heat loss that melts snow and refreezes at the eave.
For active ice dams, use low-pressure steam equipment specifically designed for ice dam melting rather than mechanical chopping with hammers, axes, or ice picks, which routinely punctures or deforms roofing and flashing.
Do not substitute a high-temperature pressure washer for true steam equipment — pressure washers rely on force rather than heat and can damage roofing materials even at lower pressure settings.
In an active-leak emergency, cutting channels through the dam to let trapped water drain is a documented short-term measure, distinct from full dam removal.
Confirm a hired ice-dam contractor's insurance certificate specifically references ice dam removal work, since general liability and workers' comp coverage doesn't automatically extend to this higher-risk service.
Known gotchas
Homeowners insurance often treats ice dam damage as a maintenance issue rather than a covered sudden/accidental peril — don't assume removal costs or resulting damage are automatically covered.
A contractor advertising 'steam removal' may actually be using a hot pressure washer; verify the equipment and method before hiring, since the wrong method is a common cause of roof damage claims.
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