PRO SET™ PLUS is a multipurpose latex used as an additive for Portland cement bond coats, concrete repair mortars (such as PRO CEM or PRO CEMIX); and as a primer for gypsum wallboard or plaster, prior to applying thin-set mortars or adhesives. When used as an additive, PRO SET PLUS will enhance flexibility, freeze/thaw stability, impact resistance, and reduced water absorption characteristics making it Ideal for leveling screeds used in pools, subways, and tunnels.