Screed Additives

AptiScreed Max Powder

AptiScreed Max Powder is a semi-dry screed additive which has been specifically developed to provide rapid drying times, high early and ultimate compressive and flexural strengths in bonded, unbonded and floating screeds.


AptiScreed Max Powder is a unique, innovative screed additive combining next generation PCE technology for rapid drying times and high early strengths. It is ideal for underfloor heating, internal and external applications. AptiScreed Max Powder is also suitable for pumped screeds.


  • Will allow foot traffic after 24 hours.
  • Produces a Cat A, C40, F7 Screed, allows thinner screeds to be laid without compromising strengths.
  • Bonded screeds from 20mm and 35mm for unbonded screeds.
  • Improved finishing from action of superplasticiser.
  • Low odour, low VOC content.


AptiScreed Max Powder is supplied in water soluble sachets for ease of dosing. It is compatible with all Portland Cement systems, including GGBS, PFA and limestone blends. AptiScreed Max Powder is compatible with retarders but should be added to the mix separately.

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