How to Prevent Ice Dams & Winter Roof Damage

Winter in Iowa can be unpredictable, and after an unusually mild January, we’re finally seeing the snow and freezing temperatures return. While it’s great to enjoy the beauty of a winter wonderland, these conditions also bring the risk of ice dams, which can cause serious damage to your home. If you thought you were getting away with an easy winter, now’s the time to take action and protect your roof before the worst of the season sets in.

What Are Ice Dams?

Ice dams form when heat from inside the house escapes through the roof, causing snow to melt. As the melted water flows down the roof, it refreezes at the eaves where temperatures are colder. Over time, this creates a ridge of ice that prevents proper drainage, forcing water to back up under the shingles and into your home.

Signs of Ice Dams & Roof Damage

  • Large icicles hanging from your gutters
  • Ice buildup at the roof’s edge
  • Water stains on ceilings or walls
  • Peeling paint or sagging drywall inside your home
  • Mold or mildew growth in your attic

How to Prevent Ice Dams

1. Improve Attic Insulation

A well-insulated attic prevents heat from escaping and warming your roof. Check your attic’s insulation levels and add more if necessary to maintain an even roof temperature.

2. Ensure Proper Ventilation

Good airflow in your attic keeps the temperature consistent and prevents uneven snowmelt. Ridge vents, soffit vents, and gable vents can help regulate attic temperatures.

3. Seal Air Leaks

Air leaks around light fixtures, chimneys, and vents allow warm air to escape into the attic. Use caulk or spray foam insulation to seal these gaps and minimize heat loss.

4. Keep Gutters Clean

Clogged gutters contribute to ice dam formation by preventing melted snow from draining properly. Clean your gutters before winter to ensure they are free of debris.

5. Rake Your Roof After Snowfall

Using a roof rake, remove excess snow from the edges of your roof after heavy snowfall. This prevents buildup and reduces the chance of ice dams forming.

6. Install Heat Cables

For areas prone to ice dams, heat cables can be installed along the roof’s edge to keep water flowing and prevent ice buildup.

What to Do If You Already Have an Ice Dam

If an ice dam has already formed, take these steps to minimize damage:

  • Use a roof rake to carefully remove snow buildup.
  • Place calcium chloride in a stocking and lay it across the ice dam to help melt the ice.
  • Do not attempt to chip away ice with a hammer or shovel, as this can damage your shingles.
  • If water is leaking into your home, contact a professional roofer immediately.

Protect Your Roof This Winter

With the sudden shift back to colder temperatures in Iowa, now is the time to be proactive. Taking these steps can save you from costly repairs down the road. If you need help winter-proofing your roof or dealing with existing damage, our expert team is here to help. Contact us today for a free inspection and keep your home safe all winter long!