SC Roofing Contractor Practice Questions - South Carolina General Contractor - Roofing Subclass Exam

What is the purpose of a vapor retarder in a commercial roofing system?

To prevent moisture from the building interior from entering the insulation To reflect radiant heat from the roof surface To provide additional structural support To serve as the primary waterproofing layer

Correct Answer:

To prevent moisture from the building interior from entering the insulation

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