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Inspection Habitation Outaouais

April 18, 2026

How to know if a roof is at the end of its life

The roof is one of the most underestimated major expenses when buying a home. Replacing it is costly, and a roof at the end of its life can let water in. Here is how to recognize the signs.

A roof’s lifespan

An asphalt shingle covering generally lasts 15 to 25 years, depending on quality, installation, ventilation and climate. Our Quebec climate, with its freeze-thaw cycles, puts roofs to a hard test.

The signs to watch

  • Lifted, cracked or missing shingles
  • Granules in the gutters (shingles wear out and lose their coating)
  • Curling or cupping shingles at the corners
  • Damaged or lifted flashings around chimneys and vents
  • Visible sagging of the roofline
  • Water stains on the ceiling of the top floor

Why ventilation matters

Poor attic ventilation ages a roof faster, through heat and moisture buildup. That is why an inspection looks at the roof and the ventilation together.

What the inspection brings

A pre-purchase inspection assesses the condition of the covering, flashings and ventilation, and estimates where the roof is in its useful life. For tall or hard-to-reach roofs, a drone inspection allows a close, safe examination.

In short

A roof at the end of its life is not a reason to walk away, but it is an expense to budget and negotiate. To find out where yours stands, request a quote.

roof shingles maintenance

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