Alabama Contractors License Practice Exam

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Study for the Alabama Contractors License Test. Prepare with quizzes featuring flashcards and multiple-choice questions, each supported by hints and explanations. Equip yourself for exam success!

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What is the minimum overlap for drip edges in roof construction?

2 inches
3 inches
4 inches
5 inches

The correct answer is: 4 inches

In roof construction, the minimum overlap for drip edges is established to ensure effective water management and to prevent moisture from penetrating beneath roofing materials. A 4-inch overlap for drip edges serves as a standard measurement because it provides sufficient coverage to guide water off the edges of the roof and away from the underlying structures, helping to avoid issues like wood rot and mold growth. This specific measurement is derived from industry best practices, which take into account factors such as rainfall, roof pitch, and the types of roofing materials used. An overlap of 4 inches balances the need for protection against water infiltration while also accommodating various roofing configurations and environmental conditions, making it a widely accepted guideline among construction professionals.