NM CID GS-16 Practice Questions - New Mexico CID GS-16 Masonry Examination Exam

Before applying an acidic masonry cleaner, the wall should be:

Dried in the sun so the acid soaks in as deeply as possible Thoroughly prewet with clean water so the acid stays on the surface and does not soak into dry units and joints Coated with form-release oil Heated above 140°F

Correct Answer:

Thoroughly prewet with clean water so the acid stays on the surface and does not soak into dry units and joints

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