ARDEX E 90 is a specialized synthetic dispersion designed to enhance the performance of ARDEX X 7 G, ARDEX X 7 W, and ARDEX S 21 cement-based adhesives. When diluted with an equal volume of water before mixing with the ARDEX adhesive powder, ARDEX E 90 significantly improves the adhesive properties of the mortar. The resulting mixture exhibits high adhesive strength, elasticity, and water-repellent qualities, while maintaining the workability, slump resistance, and open time characteristic of standard ARDEX adhesives. Substrate preparation follows the same guidelines as for ARDEX adh