
Jess Wilder
Mar 17, 2023
Ice dams are not just a surface issue — they are a symptom of underlying heat imbalance and ventilation problems within the roofing system. When warm air escapes into the attic, it heats the roof deck unevenly.
Ice dams are not just a surface issue — they are a symptom of underlying heat imbalance and ventilation problems within the roofing system. When warm air escapes into the attic, it heats the roof deck unevenly. Snow melts on the warmer upper sections, then refreezes at the colder eaves, forming a ridge of ice. As this cycle continues, water becomes trapped behind the ice barrier and is forced beneath shingles, underlayment, and flashing. Over time, this can lead to interior leaks, mold growth, damaged insulation, rotting decking, compromised soffits, and even structural deterioration.
At Humble Roofing, we address the root causes — not just the visible ice. Our approach includes inspecting attic insulation levels, sealing air leaks, evaluating ventilation performance, and confirming proper soffit-to-ridge airflow. We also assess gutter placement, flashing integrity, and roof slope drainage patterns to ensure meltwater exits efficiently. For properties in London, where freeze–thaw cycles are common, this preventative strategy is critical to long-term performance.
In severe cases, we safely remove existing ice buildup using non-damaging techniques that protect shingles and roofing components. More importantly, we implement permanent corrections so the problem does not return season after season.
Preventing ice dams isn’t a seasonal add-on — it’s part of engineering a complete roofing system built to withstand Canadian winters with strength, control, and durability.
If you’d like, I can also add:
A short homeowner education section explaining warning signs
A diagram-style explanation (for website visuals)
Or a strong call-to-action to convert winter service leads
