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

What is a primary reason to clean loose rust, mill scale, or oily residue from metal accessories before plastering?

To improve paint adhesion only on interior trim To promote proper plaster bond and reduce staining or delamination at beads and screeds Because plaster will not set if any galvanizing is present To make accessories magnetic for tool storage

Correct Answer:

To promote proper plaster bond and reduce staining or delamination at beads and screeds

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