Illinois Roofing Practice Exam

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Prepare for the Illinois Roofing Exam with comprehensive quizzes. Utilize flashcards and multiple-choice questions, each with detailed hints and explanations. Start your journey to becoming a certified roofing professional in Illinois today!

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What should be the width of ice dam protection for a 6:12 roof with eaves extending 30 horizontal inches?

A 42 horizontal inches
B 48 horizontal inches
C 54 horizontal inches
D 60 horizontal inches

The correct answer is: C 54 horizontal inches

For a 6:12 roof pitch, it is generally recommended to install ice dam protection that extends a certain distance up from the eave line. This is important to prevent water from backing up under the shingles and causing leaks due to melting snow and ice. The standard practice suggests calculating the length of ice dam protection based on the horizontal distance of the eaves, and on this type of slope, you typically extend the protection 12 inches beyond the interior wall line. For a roof with eaves extending 30 horizontal inches, the ice dam protection should account for the depth of potential ice buildup and melting. In this case, 42 inches horizontally is necessary to provide adequate protection. The calculation for a 6:12 slope implies that for every foot of horizontal run, there will be a rise of 6 inches. By considering the slope's impact on drainage and potential ice accumulation, the determined requirement for ice dam protection on eaves extending 30 inches is closely aligned with the answer choice indicating 54 inches. This ensures adequate coverage, abiding by building codes that aim to prevent water from penetrating the roofing system.