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This field guide to inspecting asphalt shingle roofs was developed to provide the user with a quick reference tool for use in evaluating comp shingle roofs. It’s designed to help in identifying a wide range of defective and correct conditions.
With over 170 high-resolution photographs, illustrations and diagrams, it covers flashing plus three-tab, laminated and T-lock shingles, including both organic and fiberglass. It covers shingle components, problems due to aging, wear & tear, impact, abrasion, poor ventilation and improper installation.
Developed by Kenton Shepard, author of InterNACHI’s Certified Roof Inspector course (soon to be released).
***PDF is 36 MB in size, so allow some time for the download to occur. We STRONGLY recommend that you do this on a high speed internet connection. You will need Adobe Reader 7.0 or newer or a similar PDF reader.