Sullivan Engineering Blog From Polynesia to Polyurea: The Evolution of Roofing

By: Ed Pon October 28, 2020 Roofing materials have evolved for thousands of years. It all started with some form of steep slope roofing that comprised of shingles, thatch, terra cotta tile, etc. The principle for each roofing material configuration is the same.  Small overlapping units of water-resistant material are secured to a rigid structural […] The post From Polynesia to Polyurea: The Evolution of Roofing appeared first on Sullivan Engineering LLC.