How do you know when to replace a roof shingles?

There are a number of signs that may indicate it's time to replace your roof shingles:

1. Age: Asphalt shingles typically have a lifespan of 15-30 years, while other materials such as metal or tile may last longer. If your roof is nearing or has exceeded its expected lifespan, it may be time for a replacement.

2. Leaks: If you notice leaks or water damage in your attic or interior ceiling, it's likely that your roof is no longer adequately repelling water. This is a clear indication that replacement is necessary.

3. Curling or Buckling Shingles: If the edges of your shingles are curling or buckling, this can indicate that they are no longer properly adhering to the roof deck. This can lead to leaks and further damage, so replacement is recommended.

4. Missing or Broken Shingles: Shingles that are missing or broken can compromise the integrity of your roof and allow water infiltration. It's important to replace any missing or broken shingles promptly to prevent further damage.

5. Granule Loss: Asphalt shingles are coated with granules that protect them from UV rays and impact damage. If you notice that granules are falling off or collecting in your gutters, this may indicate that your shingles are deteriorating and should be replaced.

6. Algae or Moss Growth: If you see algae or moss growing on your roof, this is a sign of moisture retention and can deteriorate the shingles over time. It's important to have the roof cleaned and consider replacing any affected shingles.

7. Sunlight Showing Through the Roof: If you can see sunlight coming through the gaps between your roof shingles, this means they are no longer providing adequate coverage. It's important to replace these shingles as soon as possible to prevent water damage.

If you notice any of these signs, it's advisable to consult with a professional roofing contractor for an evaluation and recommendations. They can assess the condition of your roof and determine if replacement is necessary.