What Is An Ice Dam
An ice dam forms when:
- Heat from your attic warms the roof.
- Snow melts and runs down toward the colder roof edge.
- The water refreezes at the eaves.
- Ice builds up, blocking proper drainage.
Once that barrier forms, melting snow has nowhere to go—so it backs up under your shingles and into your home.
Immediate DIY Solutions (Safe Removal)
If you already have an ice dam forming, here’s how to address it safely:
1. Use a Roof Rake
A roof rake with a long extension handle allows you to remove snow from the ground—no ladder required.
How to do it:
- Stand safely on the ground.
- Pull snow down from the roof edge (about 3–4 feet up).
- Work carefully to avoid damaging shingles.
Tip: Removing snow reduces the source of meltwater before it refreezes.
2. Create Drainage Channels with Ice Melt
If ice has already formed:
- Fill old pantyhose or socks with calcium chloride ice melt (NOT rock salt).
- Lay them perpendicular across the ice dam.
- The ice melt will carve a channel through the dam so water can drain.
Avoid:
- Chipping ice with a hammer (can damage shingles)
- Using open flames or heat torches
- Pressure washing
- Climbing onto icy roofs
3. Clear Gutters (When Safe)
Clogged gutters contribute to ice buildup. Before winter—or during mild weather—clear out leaves and debris so melting snow can drain properly.
Long-Term Prevention Strategies
The real solution to ice dams is addressing the underlying cause: uneven roof temperatures.
1. Improve Attic Insulation
Proper insulation keeps heat inside your home instead of escaping through the roof.
- Add insulation to meet recommended R-values for your region.
- Pay special attention to attic floors.
- Seal gaps around light fixtures and access panels.
2. Air Seal Your Attic
Warm air escaping from your living space is a major contributor to ice dams.
Common problem areas:
- Recessed lighting
- Plumbing vents
- Chimney chases
- Attic hatches
Use expanding foam or caulk to seal these gaps.
3. Increase Attic Ventilation
Proper airflow keeps the roof surface cold and consistent.
- Ensure soffit vents are not blocked.
- Install ridge vents or gable vents if needed.
- Consider baffles to maintain airflow above insulation.
4. Install Heat Cables (If Necessary)
Roof de-icing cables can help prevent ice buildup in problem areas. These are most effective when used strategically—not as a substitute for insulation and ventilation improvements.
When to Call a Professional
DIY methods work in many cases—but call a roofing professional if:
- You notice water stains on ceilings or walls.
- Ice buildup is severe or widespread.
- You’re uncomfortable working from heights.
- You suspect structural damage.
Professionals can safely steam-remove ice dams without damaging shingles.
Quick Winter Checklist
- Clear snow from roof edges after heavy snowfall
- Keep gutters clean
- Seal attic air leaks
- Improve insulation
- Check ventilation before winter begins
Final Thoughts
Ice dams are common—but they’re preventable. The key is controlling heat loss and maintaining proper drainage. A little preventative maintenance now can save thousands in repairs later.
By staying proactive and addressing small issues early, you’ll protect your roof, your home, and your wallet all winter long.
