Pre-blended, polymer-modified mortar with a low modulus of elasticity, high compressive strength and good resistance to de-icing salts, freeze-thaw cycles and seawater with exceptional physical-chemical characteristics suitable for areas exposed to dry/damp cycles specified by exposure class XF4, for grouting architectonic stone floors. TECHNICAL DATA: Pot life of mix: 20 minutes. Waiting time before putting into service: 7 days. Colour: basic. Application: rubber MAPEI trowel or rake. Cleaning: with wet MAPEI sponge, or by hosing down with sawdust and water. Storage: 12 months. Consumption: according to the size of the joints and slabs. Packaging: 25 kg.