40 Hour Property and Building Inspection Practice Test

What are granules used for in asphalt shingles?

1. Increasing weight

2. Providing color and UV protection

3. Insulating the roof

4. Making shingles lighter

The correct answer is: Providing color and UV protection

Granules in asphalt shingles serve several essential functions, with providing color and UV protection being the most significant role. The granules are typically made from crushed stone and come in various colors to enhance the aesthetic appeal of the shingles. Beyond aesthetics, these granules act as a protective layer against ultraviolet (UV) radiation. Prolonged exposure to UV rays can deteriorate the asphalt, thus the granules help in maintaining the integrity and longevity of the shingles by reflecting sunlight and reducing heat absorption. Furthermore, the granules contribute to the shingles' durability against weather elements, such as rain and wind, which can cause physical wear over time. The combined effects of these functions protect the underlying materials of the roof and ensure that the shingles perform effectively over their typical lifespan. The primary focus on color and UV protection underscores the importance of these granules in both maintaining the visual appearance and enhancing the roof's resilience against environmental factors.