Ontario summers bring more than backyard barbecues and long weekends at the lake. Between June and September, the province sees its most intense storm activity of the year — from severe thunderstorms and high winds to hail, tornadoes, and flash flooding. These events can strike with little warning and leave behind significant damage that many homeowners aren’t fully prepared to cover.
What Summer Storms Can Do to Your Home
Summer storms in Ontario can cause a wide range of damage in a very short window. High winds can tear off shingles, topple trees onto roofs, and send unsecured outdoor furniture through windows. Hail can dent siding, crack skylights, and destroy gardens. Torrential downpours can overwhelm drainage systems, flood basements, and erode foundations — sometimes in under an hour.
The damage isn’t always dramatic. A slow roof leak caused by displaced shingles can go unnoticed for weeks, leading to water damage, mould growth, and repair costs that escalate quickly. After any significant storm, a thorough inspection of your home’s exterior is one of the simplest steps you can take to catch problems early.
What Your Home Insurance Covers — and What It Doesn’t
Standard home insurance policies in Ontario typically cover damage caused by wind, hail, lightning, and falling trees. If a storm tears shingles from your roof or a tree branch crashes through your window, those repairs are generally covered under your policy.
Where many homeowners run into trouble is water. There are several types of water damage, and they are not all treated the same under a standard policy:
Sewer backup occurs when heavy rainfall overwhelms municipal systems and forces sewage back into your basement. This is not included in a standard policy and must be added as a separate endorsement.
Overland flooding happens when water enters your home above ground from heavy rain, overflowing rivers, or pooling on saturated land. This also requires its own endorsement and is separate from sewer backup coverage.
Sudden interior water damage, such as a pipe bursting during a storm or rain entering through a broken window, is generally covered. However, damage caused by gradual leaks or poor maintenance typically is not.
Understanding which types of water damage your policy covers — and which it doesn’t — is one of the most important things you can do before summer storm season begins.
Steps to Take Before the Next Storm
A little preparation goes a long way. Walk your property and check your roof, eavestroughs, and downspouts for damage left over from winter. Clear any debris that could block drainage. Trim dead or overhanging branches near your home. Test your sump pump and confirm it has a battery backup in case of a power outage during a storm.
If you’ve made improvements to your home or property since your last renewal — a new deck, shed, fence, or finished basement — make sure those additions are reflected in your coverage limits. Underinsurance is one of the most common issues that surfaces after a major storm.
Talk to Your Broker Now, Not After the Storm
Summer storms don’t wait, and neither should your policy review. A quick conversation with your broker can confirm whether you have the right endorsements in place, whether your coverage limits are current, and whether there are any gaps worth addressing before the next severe weather warning.
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