How to Prepare Your Home's Exterior for an Ontario Winter

Ontario winters are hard on a home's exterior — freeze-thaw cycles, ice damming, and heavy snow loads all put stress on roofing, siding, and gutters. A fall walkthrough can catch small issues before they become winter emergencies.

1. Clear and inspect the gutters

Clogged gutters are one of the leading causes of ice dams, where melting snow refreezes at the roof edge and forces water back under the shingles. Clean gutters drain properly and reduce that risk significantly.

2. Check the roof for loose or damaged shingles

Any shingle that's loose, cracked, or missing before winter is an entry point for water once snow starts melting and refreezing on the roof. This is the easiest time of year to catch and fix it.

3. Inspect flashing around chimneys, vents, and skylights

These transition points are common leak sources. A quick visual check — or a professional inspection — can catch gaps before they let water in during a thaw.

4. Look at siding for gaps or damage

Cracked or loose siding panels let moisture behind the wall assembly, where it can freeze and cause more damage than the original crack. Small repairs now are far cheaper than what follows a winter of freeze-thaw cycles.

5. Trim back tree branches near the roofline

Heavy snow and ice can snap overhanging branches, and a falling limb can do serious damage to shingles or gutters.

6. Make sure downspouts direct water away from the foundation

Water that pools near the foundation and then freezes can contribute to cracking over time. Downspout extensions are a simple, inexpensive fix.

When to call a professional

If you're not comfortable getting on a ladder, or you notice anything that looks like more than routine wear, a professional inspection before winter is worth the peace of mind — it's far easier to fix a problem in October than in the middle of a January thaw.

Ironmark Exteriors offers free exterior inspections for homeowners in Hamilton, Stoney Creek, Burlington, Ancaster, and Dundas heading into the winter season.