Ice Dams on Fredericton Roofs: Causes and Prevention

With Fredericton winters in full swing, ice dams become a real concern for homeowners.

What is an ice dam?

An ice dam forms when heat from your home causes snow on your roof to melt. The melted water runs down toward the colder eaves, where it refreezes. Over time, that ice buildup blocks proper drainage, and water can back up under your shingles — potentially causing leaks, insulation damage, mold, and costly repairs.

How to prevent ice dams

Prevention is all about keeping your roof temperature consistent.

• Improve attic insulation. Proper insulation prevents heat from escaping and melting snow unevenly.
• Ensure good attic ventilation. Airflow keeps the roof deck cold and reduces melt and refreeze cycles.
• Seal air leaks around light fixtures, attic hatches and vents.
• Clear heavy snow safely. Use a roof rake from the ground after major snowfalls.
• Keep gutters clean. Proper drainage helps reduce ice buildup at the edges.

How to fix an ice dam

If you already have one:

• Do not chip away at it with tools. This can damage shingles.
• Use a roof-safe ice melt product. Calcium chloride socks work well.
• Carefully remove excess snow from the roof, from the ground if possible.
• If leaking has started, call a professional roofing contractor immediately.

In severe cases, professionals may use steam equipment to safely remove the ice without damaging your roof.

If you are unsure whether what you are seeing is an ice dam, or you are worried about winter roof damage, feel free to reach out. I am always happy to connect you with trusted local professionals.

Water getting into a house rarely stops at the roof. Wet basements in Fredericton homes covers the other end of the same problem, and buying a home in Fredericton sets out what is worth checking before you commit to one.