Use: A professional plasticizing additive with strong water-reducing effect, specially formulated for screeds covering underfloor heating installations. Mixed with the cement/concrete used, the screed additive provides superior elasticity to the mix, increasing workability and mechanical resistance to vibration by rapidly removing the air present in the concrete. PexKIT screed additive is fully water-soluble, contains no chlorides, and does not corrode metal structures or equipment. Color: brown Absolute density, kg/L: 1.20 +/- 0.03 pH value: 8.5 +/- 1.0 Directions for use: The screed additive is dosed at 0.5%–1% of the total cement quantity (for 100 kg of cement, add between 0.5 and 1 kg of screed additive). For maximum efficiency, it is recommended to pre-mix the powder materials (cement and aggregates) with at least 70% of the water quantity. Add the PexKIT additive to this mix and mix for 3–5 minutes until homogeneous. Add the remaining water until the desired consistency is obtained. The mix remains workable for up to 90 minutes.