General
Starvis® RS 421/01 F is a powder based rheology modifying construction additive with internal water storage. The ready to use thickening compound provides an improved workability, prolonged open time and an outstanding sag-resistance.
Starvis® RS 421/01 F is used for non-sag dry mortars based on ordinary Portland cement (OPC), calcium aluminate cement (CAC) or calcium sulfo aluminate cement (CSA) containing binder systems (e.g. ternary systems). It was especially designed for ceramic tile adhesives (CTA).
Fields of sag-resistant applications: CTA, plasters, renders, exterior insulation finishing systems (EIFS) and repair mortars.