Whether a 20-year-old roof requires immediate replacement depends heavily on its physical condition, attic ventilation quality, local climate severity, and the specific shingle material installed. While 20 years represents the typical design lifespan for standard asphalt shingles, many roofs can function well for a few additional years if they were expertly installed and remain undamaged. Homeowners should schedule a comprehensive professional roof inspection to evaluate wear before deciding on complete replacement.
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