SOP (prep,masking, cleanup)

Flat paints require less paint to cover, while semi-gloss and glossy paints require more paint. Generally, a job that takes two coats of flat paint typically takes three or more coats of semi-gloss or glossy paint.

New, unprimed drywall, plaster, and bare wood absorb more paint and require more coats than surfaces that have already been primed or painted with a base coat.