PRO SET™ PLUS is a universal latex additive for screeds and concrete leveling compounds (such as PRO TOP™ FX, PRO CEMIX™ and PRO SCREED™); and finishing coats, floating finishing coats, and abrasion-resistant screed construction (such as PRO CEMIX™ WS). PRO SET PLUS can also be used as a primer (undiluted) for gypsum boards or plasterboards before applying a thinset mortar or adhesive. When used as a mortar additive, PRO SET PLUS improves the flexibility, freeze/thaw stability, impact resistance and reduces the water absorption characteristics of screeds and hardened mortar beds, making it ideal for levelling screeds for exterior use or immersion in water.