The asphalt content of manufacturer's waste shingles is higher than the asphalt content of postconsumer asphalt shingles.

• A. True
• B. False
• C. Not Applicable
• D. Not Sure

Answer: (A)

The main idea here is how aging and exposure affect the asphalt content in shingles. Shingles from manufacturing waste come directly from the production line and still contain most of their original binder. In contrast, postconsumer shingles have been on roofs for years, exposed to sun, weather, and temperature changes. Over time, oxidation and weathering break down and lose some of the asphalt binder, and some of it can migrate or wash away, reducing the asphalt fraction by weight. Because of this aging effect, manufacturing waste shingles generally have a higher asphalt content than postconsumer shingles.