Ontario’s climate puts windows to the test—cold winters, hot summers, and fluctuating humidity all take their toll. But how long should windows last before needing replacement?

Average Lifespan of Windows

The lifespan of a window depends on the material, installation quality, and exposure to weather. On average:

🪟 **Vinyl windows**: 20–25 years
🪵 **Wood windows**: 15–20 years (with regular maintenance)
🪟 **Aluminum windows**: 20–30 years
🔳 **Fiberglass windows**: 30–40 years

High-quality windows can last even longer with proper care, but lower-end products may start failing earlier.

Factors That Affect Window Lifespan

Some Ontario homes may need replacement sooner depending on:

🌧️ Frequent exposure to moisture or harsh winds
🌞 High sun exposure causing frame or seal wear
🏠 Poor installation leading to leaks or drafts
🧽 Lack of maintenance (e.g., peeling paint, clogged weep holes)

Checking your windows regularly for issues can help extend their lifespan.

Signs It’s Time for Replacement

Look for these red flags that your windows are reaching the end of their useful life:

💧 Condensation or fogging between panes
🌬️ Drafts coming through closed windows
🪟 Windows that stick or won’t stay open
🎨 Cracked or rotting frames
📈 Energy bills increasing without explanation

When these issues appear, replacing your windows can improve comfort, efficiency, and home value.

Final Thoughts

Most windows in Ontario last 20–25 years on average, depending on material and maintenance. If your windows are nearing this age—or showing signs of wear—it’s worth booking an assessment to plan for replacement.

Get a FREE window inspection and quote today

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