4.6.1 Asphalt Roofing Manufacturing
Process Description
The production of asphalt roofing materials is a commonly found industry owing
to the widespread usage of the products in the United States. The asphalt roofing industry
manufactures asphalt-saturated felt rolls, shingles, roll roofing with mineral granules on the
surface, and smooth roll roofing that may contain a small amount of mineral dust or mica on the
surface. Most of these products are used in roof construction, but small quantities are used in
walls and other building applications (U.S. EPA, 1995).