Mastering Roof Inspections: Asphalt Composition Shingles, Part …
Mastering Roof Inspections: Asphalt Composition Shingles, Part 51. by Kenton Shepard and Nick Gromicko, CMI®. The purpose of the series "Mastering Roof Inspections" is to teach home inspectors, as well as insurance and roofing professionals, how to recognize proper and improper conditions while inspecting steep-slope, residential roofs.