High Reflectance Roofing Granule vs Conventional Granule: Which is Better?
When it comes to roofing materials, the type of granules you choose can make a big difference in the performance and efficiency of your roof. Two common types of granules used in roofing are high reflectance and conventional. In this article, we will explore the differences between the two and help you decide which type is better for your roofing needs.
1. Definition and Purpose:
High reflectance roofing granule, as the name suggests, reflects a higher percentage of solar energy compared to conventional granules. Its purpose is to reduce heat absorption into the roof, thus lowering the temperature of the roof and the building's interior. Conventional granules, on the other hand, are designed to provide color and texture to the shingles. They do not have any reflective properties.
2. Energy Efficiency:
High reflectance granules are more energy-efficient compared to conventional granules. They reflect up to 80% of solar energy, preventing heat from being absorbed into the roof and the building's interior. This results in a cooler building, which reduces the need for air conditioning and saves on energy bills. On the other hand, conventional granules do not have any reflective properties, and thus the roof can absorb more heat, resulting in a warmer building and higher energy bills.
3. Durability:
Both types of granules are durable and can withstand harsh weather conditions. However, high-reflectance granules are made of specialized materials that enhance their reflectivity and longevity. They are manufactured to maintain their reflective properties over time, which helps to reduce the wear and tear of the roof shingles and prolongs their lifespan. Conventional granules are also durable but do not have any additional features that enhance their longevity.
4. Environmental Impact:
High reflectance granules are more environmentally friendly compared to conventional granules. By reflecting solar energy, they reduce the amount of heat that is absorbed into the roof and the building's interior, which reduces the urban heat island effect in cities. This effect causes the temperature in cities to be higher compared to rural areas, and it has been linked to increased air pollution and health risks. Additionally, high reflectance granules reduce the need for air conditioning, which reduces carbon emissions and helps to combat climate change.
5. Cost:
High reflectance granules are more expensive compared to conventional granules. This is because of their specialized materials and manufacturing processes, which enhance their properties and longevity. However, the cost of high reflectance granules can be offset by their energy-saving benefits. By reducing the need for air conditioning, they can help to lower energy bills and save money in the long run. Conventional granules are cheaper, but they do not provide any energy-saving benefits.
In conclusion, both high reflectance and conventional granules have their advantages and disadvantages. High reflectance granules are more energy-efficient, durable, environmentally friendly, and cost-effective in the long run, while conventional granules provide color and texture to shingles but do not offer any additional benefits. When choosing between the two, consider your roofing needs, budget, and energy-saving goals. A roofing professional can help you make an informed decision and ensure that your new roof provides performance, efficiency, and longevity.
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