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

What is the recommended minimum membrane thickness for a fully adhered EPDM roofing system on a commercial building?

30 mil (0.030 inches) 45 mil (0.045 inches) 60 mil (0.060 inches) 90 mil (0.090 inches)

Correct Answer:

60 mil (0.060 inches)

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