NRCA Metal Shingle Practice Questions - NRCA ProCertified Metal Shingle Installer Exam

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For a steep-slope metal shingle roof assembly to achieve a UL 790 Class A fire rating, what is the typical assembly requirement?

Metal shingles alone qualify as Class A without additional layers Metal shingles must be installed over a Class A fire-rated deck board with appropriate underlayment per UL-listed assembly A single layer of 30-lb felt is sufficient to achieve Class A Class A requires at least two layers of metal shingles in a double-coverage pattern

Correct Answer:

Metal shingles must be installed over a Class A fire-rated deck board with appropriate underlayment per UL-listed assembly

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