Ice Dams 101
Ice Dams 101: Why They’re a Problem Right Now and How to Prevent Costly Damage
Winter in Ontario is unpredictable—one day, we’re buried in snow, and the next, temperatures rise, causing a big melt.This freeze-thaw cycle is the perfect recipe for ice dams, one of the most damaging winter roofing problems homeowners face.
If you’re seeing thick ridges of ice forming along the edges of your roof, or worse—water stains on your ceilings and walls—you could already be dealing with an ice dam problem. Left unchecked, ice dams can cause serious damage to your roof, insulation, drywall, and even structural components of your home.
π So how do you prevent ice dams before they start?
π§ What should you do if you’re already seeing leaks?
π¨ And if you're re-shingling your roof, what extra protection should you consider?
We’ll cover everything you need to know to keep your home safe from winter water damage.
Why Ice Dams Are Happening Right Now
This winter, Kawartha Lakes, Trent Lakes, and Peterborough County have already seen heavy snowfall, freezing temperatures, and now—warmer weather. These shifting conditions cause ice dams to form quickly.
Here’s How It Happens:
- Heat escapes from your home and warms up your roof, melting the snow.
- Water flows down to the colder eaves (roof edges), where it refreezes.
- Over time, ice builds up, forming a "dam" that prevents water from draining properly.
- Trapped water backs up under shingles and leaks into your home, causing insulation damage, mold, and interior water stains.
π¨ Warning Signs to Watch For:
β Large icicles hanging from the roofline (especially if they’re connected to thick ice at the eaves)
β Water stains or discoloration on ceilings and walls
β Peeling paint or bubbling drywall
β Damp or wet insulation in the attic
β Leaks around windows or doors
If you’re seeing any of these, you may already have an ice dam causing damage to your home.
How to Prevent Ice Dams Before They Start
At SCC Builds, we’ve helped homeowners in Kawartha Lakes and Peterborough County prevent ice dams before they become a costly problem. The key is fixing the root causes rather than just treating the symptoms.
1. Improve Your Attic Insulation
A properly insulated attic keeps warm air from escaping and prevents uneven snow melting on your roof.
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R-50 or higher insulation is recommended to keep attic temperatures stable.
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Seal gaps and cracks around chimneys, light fixtures, and attic access points to prevent heat leaks.
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Check for damp or compressed insulation—if it’s wet, it’s no longer effective.
π‘ We’ve worked with homeowners in the area to improve insulation, leading to warmer homes, lower energy bills, and fewer ice dam issues!
2. Install a Proper Vapor Barrier
A vapor barrier prevents warm, moist air from rising into your attic, which can contribute to condensation and ice damming.
β A well-installed vapor barrier ensures humidity stays controlled, reducing the risk of mold and ice dam formation.
3. Ensure Your Attic Is Well-Ventilated
Ventilation is just as important as insulation! Without proper airflow, warm air gets trapped, heating up your roof and accelerating snow melt.
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Soffit and ridge vents allow cold air to circulate, keeping roof temperatures even.
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Gable vents and attic fans improve airflow, reducing trapped heat.
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If your attic feels stuffy or unusually warm in winter, poor ventilation could be a factor!
π‘ We’ve installed attic ventilation systems in homes across the region, significantly reducing ice dam risks!
4. Clear Snow Off Your Roof Regularly
The more snow that sits on your roof, the greater the risk of ice dam formation.
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Use a roof rake to safely remove excess snow from the edges of your roof after heavy snowfall.
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Stay on the ground! Never climb onto an icy roof to remove snow—it's dangerous.
What to Do If You Already Have an Ice Dam
If ice dams are forming right now, quick action can help prevent more damage to your home.
β Use a roof rake to remove snow from the problem area.
β Melt the ice dam safely—fill a sock with calcium chloride(NOT rock salt) and lay it across the dam to create a drainage path.
β Dry out any leaks inside—use fans and dehumidifiers to remove moisture from insulation and drywall.
β Check your attic insulation—if it’s wet, it needs to be replaced.
π¨ If water is already leaking into your home, it’s time to call in professionals to assess the damage.
Planning a Roof Replacement? Add Ice & Water Shield!
If your roof is due for re-shingling, this is the perfect time to invest in extra protection against ice dams.
πΉ Ice & Water Shield is a waterproof underlayment installed beneath shingles, preventing leaks even if ice dams form.
πΉ It’s an essential layer for homes in areas with heavy snow and freeze-thaw cycles—like Kawartha Lakes and Peterborough County!
πΉ We always recommend Ice & Water Shield for eaves, valleys, and around chimneys to keep water out of your home.
π‘ If you’ve had ice dam issues before, adding this protection during a roof replacement is a no-brainer!
Final Thoughts: Protect Your Home Before It’s Too Late
With the big melt happening now, NOW is the time to prevent ice dams from causing costly damage.
π‘ Need help with attic insulation, ventilation, or roofing upgrades?
π§ Already dealing with water damage?
π¨ Planning a roof replacement and want added protection?
π© SCC Builds is here to help! Contact us today for a winter roof inspection or a consultation on ice dam prevention.
π Call us at 705 344-9394 or message us here to schedule an assessment!
Why This Works Even Better Now:
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More Local & Timely – Directly connects to current weather conditions in the area.
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Proves SCC Builds' Expertise – Highlights real-world solutions you’ve implemented.
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Encourages Immediate Action – Strong "Act Now" message to prevent further damage.
This version should get more engagement and inquiriesbecause it’s timely, relatable, and offers clear next steps. Let me know if you need any final tweaks! π