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Commercial Roofing Exam Questions with Correct Answers

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Commercial Roofing Exam Questions with Correct Answers

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Commercial roofing exam


What is the purpose of metallic coatings on steel that is used in a low-slope metal roofing system? -
Answer-To decrease the rate of oxidation



Which of these most accurately describes damp proofing methods? - Answer-It is designed to resist
capillary action



How does oil canning occur in a low-slope metal roofing system? - Answer-From distortions in the
flatness of the metal



What damage can result if SPF based roof systems are applied in misty or foggy conditions? - Answer-
Carbon dioxide can cause blistering of the roof membrane



Which of these are NOT appropriate to protect expansion joints in a low-scope roofing system? -
Answer-Fascia cap metal covers



Which of these is most accurate about open valleys in a wood roofing system? - Answer-Metal valley
flashing is used to carry runoff water Closed valleys are the most effective



Which of the following is true about SPF? - Answer-SPF should be applied when the deck temperature is
above 50 degrees Fahrenheit



Which of these most accurately describes valleys in a tile roofing job? - Answer-ngb.ca Tile fasteners
should be placed at least 8 inches from the center of the valley

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