How to Spot and Fix Common Winter Roof Repairs Early

In the middle of an Ottawa winter, a roof leak can feel like a disaster. The temperature is twenty below, there is snow on the roof, and suddenly you see a dark spot growing on your ceiling.
While winter roofing work presents unique challenges, identifying and addressing problems early is crucial to preventing a small leak from escalating into a major renovation project.
At Stewart Roofing, we specialize in roof repairs and maintenance throughout the Ottawa region. We believe in straight talk and honest assessments. Here is a guide on how to spot trouble early and what can be done to fix it, even in the dead of winter.
Spotting the Signs: What to Watch For
You don’t need to climb a ladder to spot many common winter roofing issues. In fact, many signs are visible from the ground or from inside your home.
The Interior Inspection
The most obvious sign of a roof issue is water intrusion, but the signs can be subtle.
- Attic Frost: If you pop your head into the attic and see frost on the nails or the plywood sheeting, you have a ventilation or insulation issue. When this frost melts, it will drip just like a leak.
- Ceiling Spots: Yellow or brown rings on your ceiling are a sure sign of water damage. In winter, this is often caused by ice dams that back up water under the shingles, rather than a direct hole in the roof.
- Musty Odours: A persistent damp smell in upper rooms can indicate trapped moisture that isn’t ventilating properly.
The Exterior Assessment
From the safety of your driveway, scan your roofline.

- Icicles on Siding: Icicles hanging from the gutters are common, but icicles forming behind the gutters or running down your siding indicate that water is bypassing your drainage system.
- Granules in Downspouts: If you see an excessive amount of ceramic granules (the sandpaper-like grit on shingles) at the bottom of your downspouts, your shingles may be aging and losing their protective layer.
- Missing Tabs: High winter winds can dislodge older shingles, leaving gaps in the roof. Look for dark patches on your roof where the shingle tabs should be.
Can You Fix a Roof in Winter?
A common myth is that roofing companies cannot perform roof repairs during the winter. This is untrue. While we cannot install a completely new roof as easily as we can in July, skilled professionals can perform essential roof repairs for leaks and stabilization work throughout the year.
Temporary vs. Permanent Roof Repairs
In some cases, winter roof repairs are a temporary measure designed to stop water ingress immediately, with the intention of returning for a permanent cosmetic fix in the spring. For example, we might use specialized cold-weather sealants and tarping to secure a breach during a storm.
However, many roof repairs can be completed permanently even in cold weather. Our experienced roof repairs crews know how to handle brittle shingles and use heat guns to ensure new seals bond correctly.
The Danger of DIY Winter Roof Repairs
We cannot stress this enough: Please do not get on your roof in winter. We have seen too many homeowners try to chip away ice dams with hammers or shovels. Not only is slipping on an icy roof incredibly dangerous for you, but it is also a severe risk to your roof.
Striking a frozen shingle with a shovel will cause it to shatter. Using a pickaxe on ice can easily puncture the waterproof membrane beneath.
Professional roofers use steamers or calcium chloride-based products to gently melt ice dams without damaging the roof covering. We have the safety gear to work at heights in icy conditions, protecting both your physical safety and the structural integrity of your home.
Trustworthy Service When You Need It Most
We understand that calling a roofer in January can be a stressful experience. You are worried about the cost, the mess, and the cold. That is why we focus on respect and transparency. We treat your home as if it were our own.
Our clients appreciate this approach. As one satisfied homeowner shared on Google:
“The crew was friendly and knowledgeable, and the office staff helpful. Everything went like clockwork, and the roof looks beautiful. I would highly recommend Stewart Roofing.”
Another client mentioned:
“Best job ever! Stan and Keiran are awesome to work with; they have a great team, an excellent cleanup job, and are very professional! Would highly recommend to anyone.”
Taking Action
If you spot a missing shingle or a damp spot on your ceiling, do not wait for a sunny day to address it. Winter moisture can cause rapid deterioration of wood structures. Roof maintenance is about speed and precision.
We are here to provide honest advice and skilled craftsmanship, regardless of the season. Let us assess the damage and provide you with a clear, no-nonsense Roof Repairs plan to fix it.