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  • Color : grey
  • Working time : 25min
  • Walk on time : 2h
  • Curing time : after 24h
  • Coverage : 1,5 kg/mm/m²


  • Self-levelling
  • Thin application
  • Hydraulically setting


Measure 6 liters of clean, cold water into a clean mixing bucket. Gradually add the bag of Bostik SL C350 UNIVERSAL to the water, whilst continually mixing with an electric drill and mixing paddle until a smooth lump-free mixture is obtained. This will normally be achieved after 2 minutes. The mixture will retain its self-smoothing capability for approximately 25 minutes under normal conditions. Pour the mixed material onto the prepared substrate to a thickness between 1mm and 10mm. Using a smooth edge stainless steel trowel, smooth over the wet product to gain the desired thickness and smoothness. A pin level may be used to assist in gaining the required depth. Use a spiked roller to remove any trapped air and flow lines, to give a uniform surface appearance.

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