Most of the issues that lead to ice dams are because of improper or ineffective ventilation in your attic. This could be a result of a roof that needs replacing, improper insulation in your attic ceiling, or something that’s blocking a heat source and the air is routing to your attic.

If you notice ice dams building up on your roof during the winter, it’s best to have a professional investigate a potential cause so you can fix the problem before any damage occurs.

There are some other things you can do to prevent ice dams from forming on your roof, including:

• Keep your gutters clean. Blocked gutters mean that snow melt cannot quickly flow off your roof. Keep your gutters clear to avoid backed-up water.
• Use a rake after heavy snowfall. If you get a heavy snow, use a long-handled rake to remove the snow from at least the lower 4 feet of your roof’s edge. This can help prevent ice dams from forming.
• Use calcium chloride or an ice-melt product. If you already have an ice dam forming, apply an ice-melt product to break up the ice and remove it from the roof.
• Hire a professional. Some roofing professionals and exterior contractors offer ice dam removal services. Find one near you if dealing with your ice dam concerns you.