Description USES Sikafloor®-82 EpoCem® is intended for use by skilled professionals only. It serves as a Temporary Moisture Barrier (TMB) with a thickness of 3-7 mm, enabling the application of resin-based floors (Epoxy, Polyurethane, and PMMA*) on high-moisture substrates, including green concrete, providing a durable solution. It is also used as a self-smoothing screed for: Leveling or patching horizontal concrete surfaces, whether new or in repair, in chemically aggressive environments Floor topping for non-ventilated damp substrates, where aesthetics are not a primary concern A leveling layer beneath Epoxy, Polyurethane, PMMA coatings, tiles, carpets, sheet floors, or wooden floors Repair and maintenance of monolithic and vacuum concrete floors Designed for use on cementitious substrates: Suitable for moisture control (Principle 2, Method 2.3 of EN 1504-9) Suitable for physical resistance (Principle 5, Method 5.1 of EN 1504-9) Suitable for restoration work (Principle 3, Method 3.1 of EN 1504-9) Suitable for preserving or restoring passivity (Principle 7, Methods 7.1 and 7.2 of EN 1504-9) Suitable for increasing resistivity (Principle 8, Method 8.3 of EN 1504-9) CHARACTERISTICS / ADVANTAGES Can be overcoated with resin-based flooring after 24 hours ( 20ºC, 75% relative humidity) Prevents osmotic blistering in resin coatings over damp substrates Easy to apply with good leveling properties Impermeable to liquids, but allows water vapor permeability Compatible with bituminous overlays Resistant to frost and de-icing salts Strong chemical resistance Thermal expansion similar to concrete Excellent bond to both green and cured concrete, whether dry or damp Strong early and final mechanical strength Excellent resistance to water and oils Ideal preparation for smooth surface finishes Suitable for interior use Solvent-free Will not corrode reinforcement steel APPROVALS / STANDARDS Test report from MPA Dresden GmbH, dated 29/11/2004. Epoxy-modified cementitious mortar for self-smoothing screeds, in compliance with EN 1504-2:2004, EN 1504-3:2005, and EN 13813:2002. Certified by Factory Production Control Body No. 2116, with CEmark. PRODUCT INFORMATION Chemical Base: Epoxy-modified cementitious mortar Packaging: Pre-measured 29 kg units Part A: 1.14 kg plastic container Part B: 2.86 kg plastic container Part C: 25 kg plastic bags Appearance / Color: Part A: White liquid resin Part B: Transparent yellow liquid hardener Part C: Natural grey aggregate powder Final color: Light grey Shelf Life: Part A and B: 12 months; Part C: Contact Sika for details Storage: Store in dry conditions in unopened, undamaged packaging at temperatures between 5°C and 30°C. Protect Part A and B from frost Protect Part C from humidity Density: Part A: ~1.05 kg/L Part B: ~1.03 kg/L Mixed resin: ~1.97 kg/L Mixed A B C: ~2.10 kg/L TECHNICAL INFORMATION Compressive Strength: 1 day: ≥ 15 N/mm² 28 days: ≥ 45 N/mm² Tensile Strength in Flexure: 1 day: ≥ 2 N/mm² 28 days: ≥ 10 N/mm² Freeze/Thaw De-Icing Salt Resistance: WFT-L 86% (High) Carbonation Resistance: For 8 mm thickness, R ≈ 24.2 m SYSTEM INFORMATION For the system configuration, refer to the following guidelines: Substrates: Green concrete (once mechanical preparation is possible), damp concrete (older than 14 days), damp-aged concrete with rising moisture Primer: Sikafloor®-155 WN Screed: Sikafloor®-82 EpoCem® Top Coat: Choose from Sikafloor® and Sikagard® ranges Bonding Bridge: Sikafloor®-155 WN for interlayer priming APPLICATION INFORMATION Mixing Ratio: Part A: 1.14 kg Part B: 2.86 kg Part C: 25 kg Screed: At temperatures between 12ºC to 25ºC: Mix 1:2.5:21.9 (by weight) At temperatures between 8ºC to 12ºC and 25ºC to 30ºC: Reduce Part C to 24 kg for better workability (not more than this reduction) Primer Application: Sikafloor®-155 WN (parts A B) diluted with 10% water, approximately 0.3 – 0.5 kg/m² Self-smoothing Screed Consumption: ~2.25 kg/m² per mm of thickness, with a minimum of 6.75 kg/m² for a 3 mm thick application Layer Thickness: Minimum 3.0 mm, maximum 7.0 mm Relative Air Humidity: 20% to 80% Substrate Temperature: Minimum 8°C, maximum 30°C Substrate Moisture Content: Can be applied on green or damp concrete (no standing water) Wait at least 3 days for early shrinkage of concrete to avoid cracks Pot Life: At 10°C: ~50 minutes At 20°C: ~25 minutes At 30°C: ~12 minutes Curing Time: Once tack-free, vapour-permeable seal coats can be applied For vapour-tight coatings, ensure surface moisture is below 4%: At 10°C: ~3 days At 20°C: ~1 day At 30°C: ~1 day
