Study the raw asphalt manufacturing process of oxidized asphalt and polymer modified asphalt and the grades of asphalt required for manufacturing shingles. Also, insight on asphalt demand and how it relates to supply in the roofing industry.
A review of the differences in quality, longevity, and the functional benefits between the two asphaltic products and the average life cycle of a typical asphaltic shingle roof. The functional benefits will include a brief review of Impact rated shingles.
1 HSW Credit