What Is Granular Loss on a Roof

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What Is Granular Loss on a Roof?

Granular loss is a common issue that occurs on asphalt shingle roofs over time. It refers to the loss of the granules that cover the surface of the shingles. These granules are essential as they protect the underlying asphalt layer from damaging UV rays, extreme weather conditions, and other external factors. When granular loss occurs, it can lead to various problems, including reduced roof lifespan, decreased energy efficiency, and potential leaks.

Causes of Granular Loss:

1. Aging: As roofs age, the asphalt shingles naturally deteriorate, leading to the loss of granules.

2. Weathering: Exposure to harsh weather conditions such as heavy rain, hail, snow, and extreme temperatures can accelerate the granule loss process.

3. Poor manufacturing: Low-quality shingles or improper installation can result in premature granular loss.

4. Foot traffic: Frequent foot traffic on the roof, such as during maintenance or repairs, can cause granules to dislodge.

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5. Improper cleaning: Using high-pressure washing or harsh chemicals when cleaning the roof can remove the protective granules.

Effects of Granular Loss:

1. Reduced lifespan: Granular loss weakens the shingles, making them more susceptible to damage and reducing their overall lifespan.

2. Energy inefficiency: The granules on shingles play a crucial role in reflecting sunlight and heat away from the roof. Granular loss can lead to increased heat absorption, resulting in higher energy bills.

3. Leaks and water damage: When the protective layer of granules is compromised, water can penetrate the underlying layers, causing leaks and potentially damaging the interior of the building.

7 FAQs about Granular Loss:

1. How can I identify granular loss on my roof?
Look for signs of bald or shiny spots on the shingles, as well as excessive granules in gutters, downspouts, or around the perimeter of the building.

2. Can granular loss be repaired?
No, granular loss cannot be repaired. Once the granules are lost, the shingles’ protective capability is compromised, and replacement is necessary.

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3. How often should I inspect my roof for granular loss?
It is recommended to inspect your roof at least once a year, especially after severe weather events or if your roof is older.

4. Can granular loss be prevented?
While granular loss is inevitable as roofs age, regular maintenance, proper installation, and choosing high-quality shingles can help slow down the process.

5. Will granular loss affect my roof’s warranty?
Granular loss is a natural occurrence and is typically not covered under warranties. However, it is essential to review your specific warranty terms.

6. Can I just remove the loose granules?
Removing loose granules will not solve the underlying issue. If granular loss is significant, it is best to consult a professional roofing contractor for an assessment.

7. How much does it cost to replace shingles affected by granular loss?
The cost of shingle replacement varies depending on the size of the roof, the type of shingles used, and the complexity of the job. It is advisable to obtain quotes from reputable roofing contractors for an accurate estimate.

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In conclusion, granular loss on a roof is a common issue that can significantly impact its lifespan and performance. Regular inspections, maintenance, and timely replacement of damaged shingles are crucial to ensure the long-term integrity of your roof. If you suspect granular loss, it is recommended to consult a professional roofing contractor for a thorough assessment and appropriate solutions.
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