RI Roofing Contractor Practice Questions - Rhode Island Commercial Roofing Contractor Exam

What is the primary function of a vapor retarder in a commercial roofing assembly?

To provide thermal insulation To prevent moisture from migrating into the insulation from inside the building To reflect solar radiation away from the roof To provide a walking surface during construction

Correct Answer:

To prevent moisture from migrating into the insulation from inside the building

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