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What Causes Roof Shingles to Lose Granules?

Jon Starry

Roof shingles are an essential component of any home, particularly in areas like Tampa, FL, where weather conditions can be harsh. One common issue homeowners face is the loss of granules from these shingles. This phenomenon not only affects the aesthetic appeal of a roof but can also signal deeper underlying problems. At Steadfast Roofing, we delve into the causes of granule loss and provide comprehensive solutions.

The Manufacturing Process and Granule Loss

The Role of Granules in Shingles

Granules are tiny, rugged particles adhered to the surface of asphalt shingles. They serve multiple functions:

  • Protection from UV Rays: Granules block ultraviolet radiation, which can deteriorate the asphalt.
  • Fire Resistance: They provide an additional layer of fire resistance.
  • Aesthetic Appeal: Granules give shingles their color and texture.

Quality of Manufacturing

The quality of manufacturing plays a crucial role in the longevity of granules. High-quality shingles are crafted with durable adhesive and robust granules. Conversely, lower quality products may have loosely attached granules that easily wear off.

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Environmental Factors Impacting Shingle Granules

Weather Conditions

In Tampa, FL, roofing is subjected to a variety of weather conditions. Intense sunlight, heavy rains, and strong winds can accelerate granule loss. Hailstorms, in particular, can cause immediate and noticeable damage to shingle granules.

Natural Aging Process

Over time, shingles naturally lose granules. As the asphalt layer ages and becomes brittle, it loses its ability to hold granules firmly. This gradual process is normal but can be expedited by environmental conditions.

Human and Mechanical Factors

Foot Traffic on the Roof

Walking on the roof can dislodge granules. During inspections or maintenance, care should be taken to minimize foot traffic.

Improper Installation Techniques

If shingles are improperly installed, they are more prone to granule loss. This emphasizes the need for professional installation by experienced roofing contractors in Tampa, FL.

Pressure Washing

High-pressure washing can strip granules from the shingles. Gentle cleaning methods are recommended to maintain the integrity of the roof.

Identifying and Addressing Granule Loss

Regular Inspections

Routine inspections by professionals can identify granule loss early. Steadfast Roofing recommends semi-annual inspections, especially after severe weather events.

Repair or Replacement Decisions

When significant granule loss is observed, a decision must be made between repairs or a full roof replacement. Factors such as the age of the roof, the extent of damage, and future plans for the property play into this decision.

Choosing the Right Roofing Material

When replacing shingles, selecting high-quality materials is crucial. As a leading roofing company in Tampa, FL, Steadfast Roofing assists homeowners in choosing shingles that offer durability and longevity.


The loss of granules from roof shingles is a multifaceted issue influenced by manufacturing quality, environmental factors, and human activities. Understanding these causes helps in making informed decisions about roof maintenance and replacement. At Steadfast Roofing, we commit to providing top-notch services and solutions to protect and maintain the integrity of your roof. Regular inspections, careful maintenance, and choosing the right materials are key to ensuring the longevity of your roofing system.

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