Pre-blended mortar with 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 installation screeds for architectonic stone flooring. TECHNICAL DATA: Mixing ratio: 1 25 kg sack of MAPESTONE TFB 60 with 1.8-2 l of water. Waiting time before putting into service: 7 days. Grouting joints: fresh on fresh. Storage: 12 months. Consumption: 20 kg/m² per centimetre of thickness. Packaging: 25 kg.