North Carolina Building Contractor License Practice Exam

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Metal flashings to which bituminous materials are to be adhered shall be what?

Pre-fabricated
Primed before installation
Fully welded
Painted

The correct answer is: Primed before installation

Bituminous materials are commonly used in roofing and waterproofing applications, and proper adhesion of metal flashings to these materials is crucial for ensuring a watertight seal and preventing leaks. Priming metal flashings before installation is essential because it enhances the adhesive properties of the bituminous materials. A primer creates a suitable surface that improves the bond between the flashing and the bitumen, leading to better integration and durability. By applying a primer, potential issues related to the compatibility of the materials are mitigated. This step is particularly important as it ensures that the surfaces adhere properly to each other under various weather conditions and loads, ultimately extending the longevity of the installation. The other options revolve around different methods of attachment or treatment, which may not provide the same level of adhesion required for a secure and effective installation of the flashings on bituminous materials.