AL Insulation Practice Questions - Alabama Insulation Contractor Examination Exam

Metal building insulation systems often use laminated fiberglass with a vapor-retarder facing because:

Metal buildings never have condensation risk The facing provides a finished interior vapor control layer while the fiberglass provides thermal resistance Metal panels already have infinite R-value Facing is only decorative and never controls vapor

Correct Answer:

The facing provides a finished interior vapor control layer while the fiberglass provides thermal resistance

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