Description USES Sikafloor®-156 is intended for use by skilled professionals. It is suitable for: Moisture control on cement-based substrates with moisture levels up to 6% CM (99% RH). Priming concrete substrates, cement screeds, and epoxy mortars. Surfaces with normal to high absorbency. Primer for all Sika Epoxy and PUR flooring systems. Binder for leveling mortars and mortar screeds. Both interior and exterior applications. Substrate consolidation on concrete, cement, anhydrite screeds, and refurbished substrates. Promoting adhesion for broadcast mastic asphalt and old adhesive residues. CHARACTERISTICS / ADVANTAGES High bonding strength Simple application process Quick drying times Suitable for use with underfloor heating systems Versatile in use Can be used for both interior and exterior applications APPROVALS / STANDARDS Certified as synthetic resin screed material per EN 13813:2002 with CE marking. Certified as surface protection coating for concrete under EN 1504-2:2004 with CE marking. PRODUCT INFORMATION Chemical Base: Epoxy Packaging: Part A: 1.875 kg, 7.5 kg, and 18.75 kg containers. Part B: 0.625 kg, 2.5 kg, and 6.25 kg containers. Bulk packaging also available in 180 kg and 1000 kg units. Part A Part B: 2.5 kg and 10 kg unipacks, 25 kg ready-to-mix units. Appearance / Colour: Part A: Transparent liquid resin Part B: Brownish liquid hardener Shelf Life: 24 months from the production date. Storage Conditions: Store in original, sealed packaging in dry conditions at temperatures between 5°C and 30°C. Density: Part A: ~1.10 kg/l Part B: ~1.02 kg/l Mixed resin: ~1.1 kg/l Solid Content: ~100% by both weight and volume TECHNICAL INFORMATION Shore Hardness: 83 (after 7 days at 23°C and 50% RH) (DIN 53505) Compressive Strength (Mortar): ~55 N/mm² (after 30 days at 23°C and 50% RH) (EN 196-1) Flexural Strength (Mortar): ~15 N/mm² (after 30 days at 23°C and 50% RH) (EN 196-1) Tensile Adhesion Strength: >1.5 N/mm² (failure in concrete) (EN 4624) Thermal Resistance: Dry heat: Permanent exposure at 50°C, short-term exposure up to 80°C for 7 days, and up to 100°C for 12 hours. Moist/wet heat: Up to 80°C for occasional exposure (e.g., steam cleaning). SYSTEM INFORMATION For various substrates and applications, including primers, moisture control, substrate consolidation, and leveling mortars: Low to Medium Porosity Substrates: One layer of Sikafloor®-156 High Porosity Substrates: Two layers of Sikafloor®-156 Levelling Mortar (Fine): Primer layer of Sikafloor®-156, followed by leveling mortar with quartz sand and Extender T Levelling Mortar (Medium): Similar to fine mortar, with a suitable sand mixture Epoxy Screed / Repair Mortar: Use Sikafloor®-156 as primer, bonding bridge, and screed base with suitable sand mixture Sand Mixtures for Screed: Various sand types and grain sizes (e.g., 0.06 – 0.3 mm, 0.3 – 0.8 mm, 0.6 – 1.2 mm) for specific layer thicknesses (15 – 20 mm). Ensure the grain size ratio is appropriate for the final layer thickness.
