NBS Source
Sikafloor® 81 EpoCem


Sikafloor® 81 EpoCem is a three component, epoxy modified, cementitious self smoothing screed. It is particularly used as a base layer beneath Sikafloor® coatings, mortars, screed, timber flooring, carpets, tiles etc. When used in conjunction with an impervious top coat, it provides a surface mounted damp proof membrane system which can be applied to green and damp substrates.

Suitable areas of application:

  • Laboratories.
  • Dairies.
  • Food processing/ manufacturing areas.
  • Pharmaceutical plants.
  • Containment areas.
  • Workshops.
  • Car park decks.
  • Bridge deck reprofiling.
  • Offices.


The cementitious substrate should be sound and of sufficient compressive strength (minimum 25 N/mm²) and pull off strength (minimum 1.5 N/mm²).The surfaces must be dry and free of all contaminants e.g. oils, grease, surface treatments and coatings etc. The substrate must be prepared mechanically to achieve an open textured fine gripping surface, free of cement laitance. Weak concrete should be removed and surface defects such as blowholes and voids must be fully exposed. All dust, loose and friable material must be completely removed, preferably by brush and vacuum, from all surfaces before application of the coating. Repairs to cementitious substrates and filling of blowholes, levelling of irregularities, etc. should be carried out using an appropriate product from the SikaDur®, Sikafloor® or SikaGard® range of materials. Prior to application confirm substrate moisture content is <12% by weight or <95% RH.

General information

Specification data - Smoothing and levelling underlay compounds

Product Reference

Sikafloor® 81 EpoCem

Resin flooring




Self Smoothing

Nominal thickness

1.5–3 mm

Self Smoothing.

2–3 mm




As standard.



Surface finish/ treatment

Sikafloor® coating

Standard product features


Spread to required thickness by trowel. Immediately work with spiked roller to ensure even thickness and release of entrapped air. If blinding with quartz aggregate, ensure that the minimum thickness of 2 mm of unbulked Sikafloor® 81 EpoCem is not compromised as this will impair its ability to act as a DPM system.

Product Options


  • Broadcast: One coat Sikafloor 81 EpoCem; Broadcast: Quartz sand to excess.
  • Self Smoothing: One coat Sikafloor 81 EpoCem.


Consult manufacturer for details.


Waterproofing of Below Ground Structures. New & Refurbishment. Proven solutions from Sika

Waterproofing of Below Ground Structures. New & Refurbishment. Proven solutions from Sika

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