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Fix an attic that has ice dams

We'll remove snow safely, improve attic insulation and ventilation to prevent recurrence—or tell you when to call a pro.

Troubleshooting · Home maintenance
1–4 hours (plus ongoing prevention)
What you'll need
  • Roof rake (to remove snow from the ground)
  • Baffles (rafter vents) if insulation blocks soffits
  • Caulk or foam (to seal air leaks)
  • Additional insulation (if attic is under-insulated)
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Steps

Goal: Confirm the ice dam, remove snow safely, then prevent recurrence.

  • Look at the roof from the ground. Ice dams appear as thick ridges of ice at the eaves. Icicles may hang from the edge.
  • Good: You confirm an ice dam. Proceed to Remove snow.
  • Bad: No ice—improve attic insulation and ventilation to prevent future dams.

Remove snow

Goal: Reduce meltwater feeding the dam. Stay on the ground.

  • Use a roof rake from the ground to pull snow off the lower 3–4 feet of the roof. Do not climb the roof—it is slippery and dangerous.
  • Do not chip, hack, or use salt on the ice—you can damage shingles.
  • Good: Snow removed. The ice will eventually melt when the weather warms. Proceed to Prevent recurrence.
  • Bad: Water leaking inside—place a bucket or tarp to catch it and call a pro for immediate relief.

Prevent recurrence

Goal: Reduce heat escaping into the attic so the roof stays cold.

  • Check attic insulation—it should be at least R-38 or the depth recommended for your climate. Add insulation where it is thin.
  • Seal air leaks from the living space (around ducts, pipes, wiring, access hatches). Use caulk or foam.
  • Check soffit vents and ridge vent or gable vent. Pull insulation away from soffits; install baffles if needed.
  • Good: Insulation and ventilation improved. The roof should stay colder and ice dams should be less likely.
  • Bad: Need new roof vents or structural changes—call a roofer or contractor.

When to get help

Call a roofer or contractor if:

  • Water is leaking into the living space.
  • You need new roof vents or structural changes.
  • The attic access is unsafe.
  • You are not comfortable working in the attic.

Do not climb the roof to remove ice—call a pro.

Verification

  • Snow removed from the roof edge with a roof rake.
  • Attic insulation is adequate and does not block soffit vents.
  • Soffit and ridge or gable vents are clear.
  • Air leaks from the living space are sealed.

Escalation ladder

Work from the device outward. Stop when the problem is fixed.

  1. Confirm ice dam Identify ice at the eaves and any water damage inside.
  2. Remove snow Use roof rake from the ground. Do not climb the roof.
  3. Improve insulation Add insulation; seal air leaks into the attic.
  4. Improve ventilation Clear blocked vents; install baffles if needed.
  5. Call a pro Water leaking inside, roof work needed, or unsafe access—call a roofer or contractor.

What to capture if you need help

Before calling support or posting for help, have these ready. It speeds everything up.

  • Location and extent of ice dam
  • Whether water is leaking inside
  • Attic insulation depth
  • Vent condition (soffit, ridge, gable)
  • Steps already tried

Do you have ice at the eaves?

Look at the roof from the ground. Ice dams appear as thick ridges of ice at the overhang. Icicles may hang from the edge.

Look at the roof from the ground. Yes: ice at the eaves—proceed to remove snow. No: no ice dam; monitor in winter or improve attic insulation and ventilation to prevent future dams.

Yes No

You can change your answer later.

Remove snow from the roof

Use a roof rake from the ground. Do not climb the roof.

Use a roof rake from the ground to pull snow off the lower 3–4 feet of the roof. Do not chip or hack the ice—you can damage shingles. Good: snow removed; meltwater reduced. Bad: water leaking inside—place bucket, call a pro. Then proceed to prevent recurrence.

Done

Is attic insulation adequate and vents clear?

Heat escaping into the attic melts snow. Poor ventilation traps heat. Check insulation and soffit/ridge vents.

Check attic insulation (R-38 or higher). Check soffit vents and ridge vent or gable vent. Pull insulation away from soffits; install baffles if needed. Seal air leaks. Good: insulation and ventilation improved. Bad: need roof work—call a roofer.

Done

Reviewed by Blackbox Atlas

Frequently asked questions

Why do ice dams form?
Heat escaping from the living space into the attic melts snow on the roof. The meltwater runs down the roof and refreezes at the cold eaves (overhang), forming a dam. Water backs up under the shingles and can leak into the attic and walls.
Can I fix ice dams myself?
Yes. You can remove snow with a roof rake from the ground. You can improve attic insulation, seal air leaks, and clear blocked vents. Do not climb the roof in winter—it is dangerous. Roof work and structural changes require a pro.
When should I call a pro for ice dams?
Call a roofer or contractor if you need new roof vents, the attic access is unsafe, you see structural damage, or water is leaking into the living space. Do not climb the roof to remove ice—call a pro.

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