Ice Dam Removal in Oshawa — Safe Steam Removal & Snow Clearing

If you see a thick ridge of ice along your eaves, icicles the size of baseball bats, or water staining on your top-floor ceilings during a freeze — you have an ice dam. Acting fast is the difference between a $500 steam removal and a $15,000 interior repair.

What Is an Ice Dam — and Why Is It Dangerous?

An ice dam forms when warm air from your attic melts the snow on the upper part of your roof. That meltwater runs down to the colder eaves, refreezes, and builds up into a ridge of ice. Behind that ridge, water pools — and since water always finds a way, it backs up under your shingles, into the roof deck, and eventually through your ceilings and walls.

The damage can include:

• Saturated insulation in the attic — loses R-value and breeds mould.
• Stained, bulging ceilings and peeling paint on top-floor walls.
• Rotted roof decking and damaged soffit.
• Gutter & downspout damage from the weight of the ice.
• Mould growth in wall cavities — sometimes hidden for months.
• Structural risk from heavy ice and snow loads on older Oshawa homes.

Our Ice Dam & Snow Services

• Low-pressure steam ice dam removal: The only safe way to melt ice off an asphalt shingle roof without damaging it. No chipping, no harsh chemicals, no pressure-washing.
• Rooftop snow removal: Hand-removed with plastic roof rakes and shovels — we clear the snow before it can melt, refreeze, and form the next dam.
• Ice & Water Shield installation: We retrofit a waterproof membrane 6 feet up the eaves and valleys, exceeding Ontario Building Code, so backed-up water can't reach the deck.
• Attic ventilation balancing: The root cause of most ice dams is poor attic ventilation. We calculate and install balanced intake/exhaust to keep the roof deck cold.
• Attic insulation upgrades: Sealing air leaks from the living space below stops warm air from reaching the roof deck in the first place.
• Heat cable installation: For stubborn problem areas (low-slope porches, valleys), self-regulating heat cables keep channels open for meltwater.

Why Steam — Not Chipping or Pressure-Washing?

We use only low-pressure steam to remove ice dams. Here's why the alternatives are dangerous:

• Chipping with an axe or shovel: Guaranteed to crack shingles, gouge the deck, and void your warranty. Every spring we repair roofs homeowners destroyed trying to chip ice themselves.
• High-pressure washing: Blasts granules off asphalt shingles and forces water under the flashing. Worse than the ice dam itself.
• Chemical de-icers (calcium chloride pucks): Can corrode aluminum gutters and flashing, and discolour the shingles.
• Low-pressure steam (what we use): Melts a clean channel through the dam without touching the shingles. Water flows off, the leak stops, your roof is intact.

Our Ice Dam Removal Process

1. Rapid Response & Safety Check

We confirm there's an active dam (often by phone with photos), assess roof access and ice thickness, and dispatch a crew with the steam equipment. Winter calls are prioritized — backed-up water damages your home every hour it sits.

2. Steam Channels Through the Dam

Our technician works from the eave up, cutting a channel through the ice dam and exposing the blocked gutter path. Meltwater immediately begins draining off the roof instead of backing up under the shingles.

3. Snow Clearance Above the Dam

We clear the snow from the upper roof so there's no fresh meltwater feeding the next dam. The full roofline is opened up — not just the visible ice.

4. Inspection & Prevention Plan

Once the immediate crisis is solved, we inspect the attic and roof for ventilation and insulation issues that caused the dam in the first place. We provide a written prevention plan — ice & water shield, ventilation, insulation — so it doesn't recur next winter.

How Much Does Ice Dam Removal Cost in Oshawa?

Pricing depends on ice thickness, roof size and pitch, access, and whether snow removal is also needed. Typical Durham Region 2025–26 winter ranges:

• Steam ice dam removal (single problem area): $500 – $1,200
• Steam ice dam removal (full eaves / multiple areas): $1,200 – $3,500
• Rooftop snow removal: $300 – $1,500 depending on roof size and depth
• Ice & Water Shield retrofit (prevention): $600 – $2,000 per eave/valley
• Attic ventilation/insulation assessment: Free with any ice dam removal

Active leak? Most winter ice dam removal is reimbursable under your homeowner's insurance if interior damage has occurred — we provide full documentation for your claim.

How to Prevent Ice Dams Long-Term

Removing an ice dam solves today's leak — preventing it solves the next five winters. The two root causes are almost always:

• Poor attic ventilation: Warm air trapped in the attic melts snow on the upper roof. We balance intake (soffit) and exhaust (ridge/roof vents) so the roof deck stays cold.
• Air leaks from the living space: Recessed lights, bathroom fans, attic hatches, and plumbing stack penetrations let warm, moist air into the attic. We air-seal them.
• Inadequate insulation: Ontario Building Code calls for ~R50–R60 in attics. Many older Oshawa homes have R20 or less.
• Missing ice & water shield: Older roofs may only have it 3 feet up. We retrofit 6 feet minimum — exceeding code — on any replacement.

A roof that's properly ventilated, insulated, and sealed simply doesn't form ice dams. We'll show you exactly what your home needs after the immediate removal.