Understanding Granule Loss: Signs to Look for in Your Asphalt Shingles


Asphalt shingles are a popular roofing material known for their durability, affordability, and aesthetic appeal. However, over time, exposure to the elements can cause asphalt shingles to deteriorate, leading to issues such as granule loss. Granules provide protection against UV rays, weathering, and impact damage, so it's essential to monitor your shingles for signs of granule loss to prevent further damage and ensure the longevity of your roof. In this guide, we'll explore what to look for in your asphalt shingles to determine if they have sustained granule loss.

  1. Inspect Your Gutters and Downspouts
    One of the first signs of granule loss is the accumulation of granules in your gutters and downspouts. During rainfall, water washes away loose granules from the surface of the shingles, which then collect in the gutters and downspouts. Regularly inspect your gutters for the presence of granules, especially after severe weather events such as heavy rain or hailstorms.
  2. Check for Bald Spots or Exposed Areas
    Granule loss can result in bald spots or exposed areas on the surface of your asphalt shingles. Inspect your roof from ground level using binoculars or climb onto the roof using proper safety precautions to get a closer look. Look for areas where the shingles appear discolored, faded, or shiny, indicating the loss of granules. Pay particular attention to areas where the sun hits the roof most directly, as these are more prone to granule loss.
  3. Evaluate the Condition of the Shingles
    Examine the overall condition of your asphalt shingles to assess their integrity and health. Healthy shingles should be uniform in color, texture, and appearance, with granules evenly distributed across the surface. If you notice patches of missing granules or areas where the asphalt substrate is exposed, it's a clear indication that the shingles have sustained granule loss and may be compromised.
  4. Look for Signs of Aging and Wear
    Asphalt shingles naturally age and weather over time, which can contribute to granule loss and deterioration. Look for signs of curling, cracking, blistering, or cupping on your shingles, as these can indicate advanced wear and potential granule loss. Inspect the edges and corners of the shingles for signs of damage or deterioration, as these areas are more susceptible to granule loss.
  5. Assess the Roof's Appearance
    Step back and take a comprehensive look at your roof's appearance from a distance. Pay attention to any areas that appear patchy, uneven, or discolored, as these may indicate granule loss and compromised shingle integrity. If your roof looks worn, weathered, or neglected, it's essential to address potential issues promptly to prevent further damage and maintain the structural integrity of your home.


Granule loss is a common issue that can affect the performance and lifespan of asphalt shingles. By knowing what to look for in your shingles and understanding the signs of granule loss, you can identify potential issues early and take proactive steps to address them. Regular roof inspections and maintenance are essential for preserving the integrity of your roof and ensuring the long-term protection of your home. If you suspect that your asphalt shingles have sustained granule loss or other damage, it's advisable to consult with a professional roofing contractor to assess the condition of your roof and recommend appropriate repairs or replacements. Investing in the health and maintenance of your roof is an investment in the safety, comfort, and value of your home for years to come.