Clean the surface of all dust, dirt, oil & grease, cement laitance and all loosely adhering particles. New concrete surface shall be at least 28 days old and the surface moisture content less than 5%. Captive/grit blasting and grinding is recommended for the most effective surface preparation. Surface irregularities and blow holes shall be repaired with Polypoxy BF (Epoxy resin based blow hole filler and skimming mortar) or Polycrete ST (cementitious repair mortar). Alternatively an epoxy resin based scratch coat can be used when repairing larger areas (> 0.5m2). The surface after carrying out the necessary cleaning shall be vacuumed for removing the dust debris left over after the cleaning process. The surface shall be primed with Polyprime EP @ 4-5 m2/L. For highly porous substrates, a 2nd coat may be required. The coating is applied when the primer is dry. However, in all circumstances, the coating shall be applied within 24 hours of application of the primer. If the primer surface is left open for more than 24 hours, then a fresh coat of primer has to be re-applied.

Polypoxy SL 40 is supplied in three pre-weighed packs (Resin, hardener and fillers). The components are just to be mixed at site and used. However, part mixing is strictly prohibited. Take a suitable container and pour the resin (A) into it. Add the hardener (B) into the resin and mix thoroughly with a paddle mixer. Use of a slow speed drill is recommended to reduce the formation of air bubbles. Then slowly add the filler (C) into the container and mix thoroughly for a few minutes.Ensure sufficient labor and material is available at site to ensure a smooth continuity of the application of the flooring. Apply the Polypoxy SL 40 topping, by pouring on to the primed surface and spread with a steel notched trowel to achieve a 2mm to 4mm seamless topping. Once the material is evenly spread, continuous spiking with a spiked roller is to be done to remove all entrapped air. Spiking adjacent layers is recommended to be done at 50% overlaps. 

CAUTION
– do not use below 5°C
– over troweling is to be avoided
– Polypoxy SL 40 should not be applied to surfaces which has rising dampness and there is a phenomenon of reverse osmosis. In addition to that, application is always recommended to be carried out when the atmospheric temperature is low.