FIBTOP 90 is an advanced sub floor smoothing compound. It is virtually tension free & designed to rapidly level & smooth hard sub floors prior to applying a floor finish. Used in conjunction with either or Fibfloor Cem Primer, FIBTOP 90 can be applied old sub floors, e.g. floor screeds & other hard and rigid bases. FIBTOP 90 is a grey powder consisting of special cements and high quality synthetic resins. When mixed with water, a fluid, self-leveling mortar is produced which can be applied from a feather edge up to the required thickness in one operation. For thicknesses greater than 10mm, incorporate ANTISLIP AG in the mixed mortar, FIBTOP 90 can normally be walked on after approx. 2 hours at 27 ± 1ºC and dries and hardens rapidly so that even thick applications are ready to receive floor coverings within one day at 27 ± 1ºC.