Ice Dam Removal | Calgary winters are beautiful, but they’re also tough on your home. Heavy snow, fluctuating temperatures, and freezing rain can all take a toll on your roof. One of the most common and damaging winter roofing issues is the formation of ice dams, thick ridges of ice that block proper drainage and cause water to back up under your shingles.
In this post, we’ll explain how snow and ice dams form, the damage they cause, and most importantly, how you can prevent them.
What Are Ice Dams?
Ice dams occur when heat escapes from your home’s attic, warming the roof’s surface and melting the snow sitting on top. As the melted water runs down toward the colder roof edges, it refreezes, forming a solid block of ice.
Over time, this ice buildup prevents proper drainage and traps water behind it. That water can then seep under shingles, causing leaks, insulation damage, and even rot in your roof’s decking and walls.
How Snow and Ice Dams Damage Roofs
Ice dams and heavy snow can cause several serious problems if left unchecked:
- Leaks and Water Damage – Trapped water can infiltrate the roof deck and drip into your attic or walls, staining ceilings and damaging insulation.
- Shingle Deterioration – Constant freezing and thawing loosens shingles and shortens your roof’s lifespan.
- Gutter Damage – The weight of ice and packed snow can pull gutters away from your home, leading to costly repairs.
- Structural Stress – Accumulated snow and ice add significant weight, increasing the risk of sagging or collapse in older roofs.
How to Prevent Ice Dams
Preventing ice dams starts with good roof maintenance and proper attic care. Here’s how to stay ahead of winter damage:
- Ensure Proper Insulation: A well-insulated attic keeps heat inside your home and prevents snow from melting unevenly on your roof.
- Improve Attic Ventilation: Good airflow balances attic temperature and helps prevent ice formation along the eaves.
- Clean Gutters Regularly: Clear out leaves, twigs, and debris in the fall so melting snow can drain freely.
- Safely Remove Excess Snow: Use a roof rake or hire a professional to safely clear heavy snow buildup before it leads to ice dams.
- Schedule a Professional Inspection: Before winter hits, have your roof checked for weak spots, loose flashing, or ventilation issues that can contribute to ice dam formation.
Professional Help for Ice Dam Problems
If ice dams have already formed on your roof, don’t try to chip or melt them yourself, this can cause more harm than good. Instead, contact a trusted local roofing professional for safe Ice Dam Removal and long-term prevention solutions.
At Lion Heart Roofing, we understand Calgary’s harsh winters and the toll they take on your roof. Our experienced team can assess your home, remove ice dams safely, and recommend preventative measures to protect your home all season long.
Final Thoughts
Snow and ice are part of life in Calgary, but roof damage doesn’t have to be. With proper insulation, ventilation, and maintenance, you can prevent ice dams before they start, saving yourself time, stress, and costly repairs.
Lion Heart Roofing is here to help you weather every season with confidence. From winter inspections to year-round roof care, our experts are committed to keeping your home safe, dry, and strong.

