The short answer
What Creates an Ice Dam
An ice dam forms when warm attic air melts snow on the upper part of the roof. The melted water runs down to the colder eaves, where it freezes again. Over time, this creates a ridge of ice that blocks proper drainage.
As more snow melts, water pools behind the ice dam. It can back up under the shingles and leak into the attic, walls, or ceilings. The leak may not appear right away, but the damage can grow as the ice persists.
Signs of an Ice Dam Leak
Look for water stains on ceilings or walls, especially near exterior walls or around windows. You might also notice damp insulation in the attic or dripping sounds after a warm spell. In cold weather, a sudden increase in indoor humidity can be a clue.
Check the roof edge for visible ice buildup. If you see icicles hanging from the eaves, an ice dam may already be forming. Be careful when inspecting from the ground, and never climb onto a snowy roof.
- Water stains that grow over time
- Damp or matted attic insulation
- Icicles along the eaves
- Dripping inside near exterior walls
- Ice buildup at the roof edge
- Condensation on windows or walls
Stop Water Before It Spreads
If you notice a leak, move furniture and valuables away from the affected area. This helps prevent the ceiling from collapsing under the weight.
Remove snow from the lower roof using a roof rake, working from the ground if possible. Clearing gutters and downspouts also helps water flow freely. For safe snow removal, consider hiring a professional who has the right equipment.
Long Term Fixes for Ice Dams
The most effective way to prevent ice dams is to keep the roof cold. Improve attic insulation and ventilation to stop warm air from reaching the underside of the roof. Sealing air leaks around vents and chimneys also helps.
Adding a waterproof membrane under the shingles can provide extra protection. If ice dams recur each winter, a roofer can evaluate your roof's design and insulation. These changes address the root cause rather than just the symptoms.
When to Call Water Damage Pros
If water has soaked into drywall, insulation, or wood framing, the damage may go beyond a simple dry. Lingering moisture can lead to mold growth and structural issues. Local water damage pros can assess the extent and begin the cleanup process.
They use moisture meters and thermal imaging to find hidden water pockets. Drying equipment and antimicrobial treatments help prevent mold. If you live in Arlington, keep your insurance policy handy, as coverage depends on the cause of the leak.
Policies vary, and your insurer decides what is covered.
- Moisture meters to locate hidden water
- Industrial air movers and dehumidifiers
- Antimicrobial treatments to prevent mold
- Drywall repair after drying
- Inspection to confirm the area is dry
Need help right now?
Phones are answered 24/7 for Arlington and nearby communities.
Call Now (703) 462-1739Frequently asked questions
How do I know if I have an ice dam?
Look for icicles hanging from the eaves and ice buildup along the roof edge. Inside, check for water stains or drips near exterior walls. If warm attic air is melting snow unevenly, an ice dam is likely.
Can I remove an ice dam myself?
You can use a roof rake to pull snow off the lower roof from the ground. Avoid chopping ice with sharp tools, as that can damage shingles. For high or steep roofs, hire a professional with proper safety gear.
Will insurance cover ice dam damage?
Coverage depends on your policy and the specific cause of the leak. Some policies cover water damage from ice dams, but not all. Review your policy documents and talk to your insurer to understand what is included.
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