AL Lath Plaster Practice Questions - Alabama Lath And Plaster Contractor Examination Exam

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Over wood-based exterior sheathing, what is a common code-compliant water-resistive barrier approach before cement plaster on framed walls?

No barrier is needed if the stucco is thick enough Two layers of Grade D building paper or an approved equivalent WRB system per code A single layer of interior vapor retarder paper only Plastic housewrap with all seams left open

Correct Answer:

Two layers of Grade D building paper or an approved equivalent WRB system per code

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