Ice Dam Removal Costs in Ottawa Winter

Professional Ice Dam Removal Costs in Ottawa

Professional ice dam removal in Ottawa costs $300 to $1,200 per visit depending on the severity of the ice buildup, the height and accessibility of your roof, and the method used. Emergency calls during active leaking or after ice storms can push costs even higher, sometimes reaching $1,500 or more due to urgency premiums and the hazardous working conditions involved.

The most common professional method is steam removal, where the contractor uses a commercial steamer to melt ice dams without damaging shingles, flashing, or gutters. Steam removal is the safest approach for your roof and costs $400 to $800 per session for a typical Ottawa home. A single-storey bungalow with a straightforward roofline sits at the lower end, while a two-storey home with multiple valleys, dormers, or a complex hip roof takes longer and costs more. Steam removal typically takes 2 to 4 hours depending on the extent of the ice dam.

Mechanical removal using specialized ice dam rakes, chippers, or careful hand-chopping with mallets is less expensive at $300 to $600 but carries a higher risk of shingle and gutter damage. This method is most appropriate for thick, stubborn ice dams that resist steaming, but it should only be performed by experienced professionals who understand how to remove ice without gouging the roofing membrane underneath.

Chemical de-icing using calcium chloride tablets or socks placed along the ice dam is the least expensive professional service at $200 to $400 per application. However, it works slowly (12 to 48 hours to create drainage channels) and is not effective during active water intrusion emergencies. Chemical methods also cause runoff that can stain siding and damage vegetation below the roofline.

Ottawa experiences 50 or more freeze-thaw cycles each winter, and the worst ice dam season typically runs from January through early March when snowpack is deepest and daytime temperatures fluctuate above and below zero. During peak demand — particularly after an ice storm or extended cold snap — wait times for ice dam removal can stretch to 3 to 7 days. If your home is prone to ice dams, booking a contractor for preventive monitoring in early December is wise.

The critical thing to understand is that ice dam removal treats the symptom, not the cause. The real problem is almost always inadequate attic insulation and insufficient soffit ventilation, which allows heat to escape through the roof deck and melt snow unevenly. Spending $1,500 to $4,000 on proper attic insulation and air sealing will often eliminate ice dams permanently, saving you hundreds of dollars in removal costs every winter. The Ontario Building Code specifies minimum R-50 attic insulation for Ottawa-area homes, and many older homes in neighbourhoods like Sandy Hill, the Glebe, and Old Ottawa South fall well short of that standard.

Proper eavestrough maintenance also helps. Clean gutters with correct slope allow meltwater to drain before it refreezes, reducing the severity of ice dams even if the underlying insulation issue has not been fully addressed.

For ice dam removal professionals and insulation contractors who can address the root cause, the Ottawa Construction Network directory at justynrookcontracting.com lists contractors across both eavestrough and insulation trades.