What this book covers The Peerless Roofing (C-39) Study Guide Book prepares you for the trade portion of the California CSLB contractor license exam. Per the state's classification, a C-39 contractor applies all types of roofing, waterproofing, and weatherproofing materials to buildings and structures. This printed book covers the subjects the state tests. See the official CSLB C39 classification. Book chapters Introduction to roofing Waterproofing & cold-applied roofing Built-up roofing Asphalt and wood shingles Rigid roofing Single-ply roofing Metal roofing Blueprint reading Tools & equipment Safety Elementary mathematics Sample questions The slope of a built-up asphalt roof should not exceed what pitch when aggregate is applied?A. 6/12 · B. 4/12 · C. 3/12 ✓ · D. 1/12 What may roofing cut corners be used on?A. Inside corners · B. Angles · C. Outside corners · D. All of the above ✓ What is one of the greatest causes of roofing deterioration?A. Wind · B. Ultraviolet rays from the sun ✓ · C. Rain · D. Air pollution
