Asphalt shingle granules collect in the gutters around the house during degranulation and granule loss. The granules reduce the capacity of the gutters and make clogs more likely.

Asphalt shingles are a durable and traditionally cost-effective roofing solution. Last time, we discussed the process of degranulation and how shingle-restoring products such as Roof Reboot prevent granule loss. Continuing on the topic of granule loss and how it affects roofs, let’s dive a little deeper into what causes granule loss and degranulation in the first place.

Asphalt shingle granules collect in the gutters around the house during degranulation and granule loss. The granules reduce the capacity of the gutters and make clogs more likely.
Shingle granules collect in the gutters of the home.
1. The Manufacturing Process

The manufacturing process plays a crucial role in determining the quality and longevity of asphalt shingles. During production, granules are embedded into the asphalt layer to provide protection against UV radiation and other environmental factors. If the granules are not properly embedded or the asphalt mix is of poor quality, granules can be more susceptible to detachment and loss.

A direct example of this is noticeable when comparing 15-year to 30-year shingles. They will both age out at different rates, as the 30-year shingle is manufactured to a higher quality. The price point reflects that, and buyers will notice a distinct difference in quality when comparing the two.

2. Environment: Weathering and Aging

As asphalt shingles age, they naturally lose some of their protective granules due to weathering. Exposure to the elements like sunlight, rain, wind, and temperature fluctuations can cause the asphalt to dry out and become more brittle. This, in turn, can lead to the gradual loss of granules and compromise the overall integrity of the shingles.

Environments vary drastically so that the same shingle will wear at different rates depending on the region. This is important to consider when assessing the age and condition of a shingle.

3. Hail and Storm Damage

Hailstorms and other severe weather events can cause significant granule loss. The force of hailstones striking the surface of the shingles can dislodge granules, leading to decreased protection and reduced lifespan. In areas prone to hail or high winds, it’s crucial to inspect the roof regularly and consider investing in impact-resistant shingles for better protection.

4. Foot Traffic

Walking on the roof can cause granule loss as well. The pressure from foot traffic can loosen the granules embedded in the asphalt, leading to their eventual detachment. To prevent granule loss from foot traffic, try to minimize walking on the roof and use caution when performing maintenance or repairs.

In a broader sense, anything that abrades and rubs on the roof will cause granule loss. That is why it is important to maintain trees that may drop limbs directly onto the roof.

5. Incorrect Installation

Improper installation of asphalt shingles can contribute to granule loss. If the shingles are not nailed down properly or if the roof deck is not adequately prepared, the shingles may be more prone to movement and granule loss. Always hire a professional roofing contractor to ensure proper installation and minimize the risk of granule loss.

6. Algae and Moss Growth

Algae and moss growth on asphalt shingles can lead to granule loss. These organisms can cause the granules to loosen and detach from the shingle surface. To prevent algae and moss growth, consider using algae-resistant shingles or applying a moss and algae control product to the roof.

If the roof has significant algae and moss growth, it is important to neutralize and clean the growth through soft washing.

How Roof Shield Stops Granule Loss?

Granule loss is a common issue faced by homeowners with asphalt shingle roofs. Understanding the various factors that contribute to granule loss can help you take the necessary precautions to protect your roof and extend its lifespan.

Through our ‘Clean-Restore-Protect’ process, Roof Shield will clean the roof system by neutralizing and removing all organic growth and then restore the properties of the roof with our shingle rejuvenator and reconditioner Roof Reboot. This process addresses the causes of granule loss that are out of the homeowners’ control and maintains the roof for years to come.

Are you a roofer, soft washer, or entrepreneur looking to enter the fast-growing asphalt shingle rejuvenation market? Roof Shield sells to and trains applicators to service homeowners nationwide. Contact Roof Shield today.

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