Top 3 Winter Roofing Myths Busted in Ontario

Winter in Ontario can be tough on roofs. Cold temperatures, snow, ice, and frequent freeze-thaw cycles often make homeowners hesitant to address roofing concerns. Unfortunately, this can lead to misconceptions about what can and can’t be done during the winter months. Below, we break down the top 3 winter roofing myths and share important facts every Ontario homeowner should know.

Myth #1: Roofing Can’t Be Done in Winter

Reality: Most roofing repairs and many full replacements can be completed during Ontario winters. At Guaranteed Roofing, we have the experience and expertise to work safely and effectively in all seasons, including extreme temperatures and heavy snowfall. Professional roofers use materials and techniques designed specifically for cold-weather installation. Modern shingles, such as IKO Dynasty, are engineered to seal and perform in lower temperatures, allowing roofing work to be completed properly and effectively in the winter months.

Myth #2: No Leaks Means My Roof Is Fine

Reality: Damage doesn’t always show up inside your home right away. Winter weather in King Township, Aurora, Newmarket, and surrounding areas can put added stress on shingles, flashing, roof edges, and, just as importantly, your attic system. Poor insulation allows warm air to escape from the home, leading to heat loss. When that warm air meets cold surfaces in the attic or along the roofline, it can cause condensation and ice buildup.

Over time, this moisture can contribute to:

• Ice dams along roof edges

• Frost or condensation in the attic

• Premature shingle deterioration

• Mold or wood rot

These issues may not cause immediate leaks, but they are signs that the roofing system is not functioning as it should and should be addressed before they worsen.

Myth #3: It’s Better to Wait Until Spring

Reality: Waiting through the winter can allow small issues to grow into larger problems.

Ontario’s freeze-thaw cycles can widen cracks, loosen shingles, and worsen ventilation or insulation deficiencies. Ice buildup and condensation caused by heat loss won’t resolve on their own and leaving them unaddressed can lead to long-term damage that becomes more costly to fix later. Identifying and addressing concerns as they arise, even in winter, can help prevent more extensive repairs by spring.

Winter Roofing Takeaway

Roofing projects don't stop in the winter! Winter is also a great time to perform an inspection and be on the lookout for what your roof is telling you. Snow, ice, condensation, and heat loss are often signs that something within the roofing, insulation, or ventilation system needs attention. Being proactive during Ontario winters helps protect your home and maintain the long-term health of your roof.

At Guaranteed Roofing, we’ve been tackling winter roofing challenges for over 30 years - keeping homes protected from the top down.

If you’re looking for a free inspection or estimate, give us a call at (905) 713-6837 or email g.roofing@rogers.com. We’re proud to be local roofing contractors trusted by homeowners since 1994.