Description USES Sikafloor®-81 EpoCem® is intended for use by trained professionals. It is designed for interior industrial cementitious substrates, including vacuum-dewatered concrete floors, and can be used as: Temporary Moisture Barrier (TMB): It enables the application of Sika® Epoxy, Polyurethane, and PMMA resin floors on substrates with high moisture content or green concrete. Self-Smoothing Screed: Ideal for leveling or patching horizontal floors during new construction, refurbishments, or maintenance. Unaesthetic Floor Topping: Suitable for non-ventilated, damp substrates. Levelling Layer: Used under Sika® Epoxy, Polyurethane, PMMA flooring systems, tiles, carpets, laminate, wood, linoleum, and vinyl flooring. Repair Mortar: Can be used to repair substrates before applying Sika® Epoxy, Polyurethane, or PMMA flooring systems. Concrete Repair and Protection: Follows EN standards for moisture control, physical resistance, restoration, passivity, and resistivity (EN 1504-9). CHARACTERISTICS / ADVANTAGES Can be overcoated with resin-based floor finishes after 24 hours Prevents osmotic blistering of resin finishes on damp substrates Quick and easy application Concrete repair mortar conforms to EN 1504-3: Class R4 Good leveling properties Impermeable to liquids but allows water vapor to pass through Resistant to freeze-thaw cycles and de-icing salts Strong chemical resistance Similar thermal expansion properties to concrete Bonds well to both green and cured concrete, whether damp or dry Good mechanical strength both early and final stages Resistant to water and oils Ideal for preparing smooth surface finishes Low VOC emissions Does not corrode reinforcement steel ENVIRONMENTAL INFORMATION Compliant with LEED v4 MRc 2 (Option 1) for environmental product declarations Conforms to LEED v4 MRc 4 (Option 2) for material ingredient transparency Meets LEED v2009 IEQc 4.2 for low-emitting materials IBU Environmental Product Declaration (EPD) APPROVALS / STANDARDS CE Marking and Declaration of Performance to EN 1504-2 (Surface Protection for Concrete) CE Marking and Declaration of Performance to EN 1504-3 (Concrete Repair) CE Marking and Declaration of Performance to EN 13813 (Resin Screed Material for Internal Use) Migration Test EN 23270, Kiwa Report No. P 8740a Water Permeability Test DIN 1048-5, Polymer Institut Report No. P 3439 Fire Testing EN 13501-1, MPA Dresden Report No. 041706 Fire Testing EN 13501-1, Hoch Report No. KB-Hoch-170138 Sliding Test DIN 51130, Certificates No. 020044-17-7, 020044-17-7a, 020044-17-8a PRODUCT INFORMATION Chemical Base: Epoxy-modified cementitious mortar Packaging: Pre-measured 23 kg units Part A: 1.14 kg container Part B: 2.86 kg container Part C: 19 kg plastic bags Appearance / Color: Part A: White liquid resin Part B: Transparent yellow liquid hardener Part C: Natural grey aggregate powder Final floor finish: Light grey, smooth and matte Shelf Life: Part A and Part B: 12 months from production date; Part C: Confirmed by the manufacturer Storage Conditions: Store in original, unopened, and undamaged packaging in dry conditions at temperatures between 5°C and 30°C. Refer to packaging for specifics Density: Part A: ~1.05 kg/l Part B: ~1.03 kg/l Resin mixed: ~1.72 kg/l Mixed A B C: ~2.10 kg/l TECHNICAL INFORMATION Compressive Strength: 1 day: ~15 N/mm² 7 days: ~50 N/mm² 28 days: ~60 N/mm² Tensile Strength in Flexure: 1 day: ~5.8 N/mm² 7 days: ~11.1 N/mm² 28 days: ~14 N/mm² Coefficient of Thermal Expansion: 15.2×10⁻⁶ 1/K
