NM CID GS-30 Practice Questions - New Mexico CID GS-30 Plastering, Stucco And Lathing Examination Exam

An existing painted CMU wall will receive new cement plaster. What preparation is required?

Leave the paint; it evens suction Remove coatings other than portland cement paint by mechanical means such as sandblasting so the plaster can bond to sound masonry Cover the paint with 4-mil polyethylene and lath Wash the paint with soapy water and plaster while it is still slick

Correct Answer:

Remove coatings other than portland cement paint by mechanical means such as sandblasting so the plaster can bond to sound masonry

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