by Kenton Shepard, Author/producer of InterNACHI’s online video Inspecting Asphalt Shingle Roofs course (free to members).
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.
This is a PDF download, not a book. You will receive a link via email to download it after purchasing.
***PDF is 72 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.