What type of information should be noted on the estimate for built-up roofs?

The selection of information to be noted on the estimate for built-up roofs is critical for a comprehensive understanding of the project requirements. The correct answer emphasizes specific technical aspects that are crucial for installation and performance.

In the case of built-up roofs, including the vapor barrier, lapping requirements, and bond type is essential because these elements directly influence the roof's durability, moisture control, and overall effectiveness. The vapor barrier helps prevent moisture from entering the structure, which can lead to damage and deterioration. Lapping requirements are important to ensure that the layers of the roofing material are properly overlapped to prevent leaks, while the bond type affects how well the materials adhere to one another and to the substrate, influencing the integrity of the roofing system over time.

Understanding this type of information allows project managers and estimators to convey precise details to contractors, ensuring that the roofing system is installed correctly and will provide the intended longevity and protection.