Fall Roof Maintenance: Prepare Your Roof for an Ontario Winter
Ontario winters are hard on roofs. Fall maintenance prepares your roof for freeze-thaw cycles, snow loads, and ice dams, reducing the risk of winter leaks and damage.
Clear debris from the roof and valleys
Fall leaves collect in valleys, gutters, and flat roof drains, trapping moisture that accelerates wear and causes ice dams. Clear debris before the first snow.
Debris in valleys is a common cause of winter leaks.
Clean and inspect gutters
Clogged gutters overflow and freeze, damaging fascia and contributing to ice dams. Clean gutters after the leaves fall and check that downspouts flow freely.
Consider leaf guards if debris is a recurring problem.
Check flashing and sealants before winter
Winter freeze-thaw exploits any flashing or sealant weakness. Have a roofer check chimneys, skylights, and vents, and refresh failing sealant before cold weather.
A small flashing gap becomes a winter leak when water freezes and expands.
Verify attic ventilation
Good ventilation is your best defense against ice dams. Balanced intake and exhaust keeps the attic cold so snow doesn't melt and refreeze at the eaves.
Fall is a good time to add soffit baffles or ridge vents if ventilation is inadequate.
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Frequently Asked Questions
How do I prevent ice dams?
The best prevention is balanced attic ventilation and adequate insulation, plus ice & water shield at the eaves.
When should I do fall roof maintenance?
After the leaves have fallen but before the first snow—usually late October or November in the GTA.
Have a roofing question?
Our Toronto team answers roofing questions and provides written estimates across the GTA.
