Illinois Roofing Practice Exam

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Prepare for the Illinois Roofing Exam with our comprehensive quiz. With a variety of questions and detailed explanations, this resource is designed to help you master the material and succeed on your exam.

Practice this question and more.

At what slope does the NRCA recommend that slate roofing have a weatherproof membrane under the slate?

Only above 45 degrees
Above 30 degrees
At all slopes
Flat roofs only

The correct answer is: At all slopes

The NRCA recommends that slate roofing should have a weatherproof membrane installed under the slate at all slopes to ensure proper water management and protection against leaks. This guideline is rooted in the understanding that even at lower slopes, water can accumulate and potentially penetrate the roofing materials over time. A weatherproof membrane acts as a safeguard by providing an additional layer of protection from moisture intrusion, which can lead to significant damage and deterioration of the roofing system as well as structural components beneath it. By advocating for a membrane at all slopes, the NRCA aims to enhance the overall durability and longevity of slate roofs, accommodating various weather conditions and preventing moisture-related issues regardless of the incline.