Sikafloor-264 HC 2-Part Epoxy Floor Coating & Seal Coat

Sikafloor-264 HC 2-Part Epoxy Floor Coating & Seal Coat

A two-part coloured epoxy coating providing a hard-wearing, seamless, low-maintenance floor finish. Use it for a smooth gloss surface or as part of an aggregate-broadcast system for a slip-resistant finish.

Product Features

• Good chemical and mechanical resistance.
• Liquid-proof gloss finish.
• Easy application by roller or squeegee.
• Slip-resistant finishes possible with the appropriate aggregate grades and system design.
• Approximately 100% solids by mass and volume.

Specifications

• Brand: Sika
• Model: Sikafloor-264 HC
• Composition: Two-part epoxy
• Listed colour options: RAL7035, RAL7040 and RAL7045
• Part A: Coloured liquid resin; part B: Transparent liquid hardener
• Mixing ratio A:B: 79:21 by weight
• Density: Approximately 1.64 kg/L for A, 1.00 kg/L for B and 1.40 kg/L mixed
• Shelf life: 24 months from production
• Storage: Original unopened and undamaged sealed packaging in dry conditions between +18°C and +30°C

Application

• Roller coating concrete and cement screeds subject to normal to medium-heavy wear.
• Storage and assembly halls, maintenance workshops, garages and loading ramps.
• Seal coats for broadcast systems in multistorey and underground car parks and maintenance hangars.
• Wet-process areas, including beverage and food-industry facilities, within the specified flooring system.

Direct UV exposure from sun, lamps or skylights may cause discolouration or colour deviation. Sika states this does not affect coating function and performance. A smooth gloss coating is not automatically slip-resistant; select the appropriate aggregate-based system.

How to Use

1. Confirm the prepared substrate's moisture content, air humidity and dew point. Substrate moisture must be below 4% by weight with no rising moisture. If it exceeds 4%, assess the specified Sikafloor EpoCem temporary-moisture-barrier system.
2. Apply at air and substrate temperatures of +10°C to +30°C and no more than 80% relative humidity. Keep the substrate and uncured floor at least 3°C above the dew point.
3. Stir part A mechanically. Add all of part B at the specified 79:21 ratio by weight and mix for 3 minutes using a low-speed stirrer at 300–400 rpm. Transfer to a clean container and remix until consistent. Avoid overmixing and air entrainment.
4. Prime with the specified Sikafloor-161 HC or Sikafloor-160 HC system to achieve a continuous, pore-free surface. Apply a second priming coat if necessary. Level rough surfaces first with an appropriate levelling mortar.
5. Apply roller coatings crosswise with a short-pile roller. Apply seal coats with a squeegee followed by crosswise back-rolling. Follow the selected smooth, textured or broadcast system build-up.
6. Observe the relevant primer-to-coating and coating-to-coating waiting windows before subsequent layers.
7. Clean tools immediately with Thinner C. Hardened material requires mechanical removal.
8. Remove floor spillages immediately and clean regularly with suitable equipment and detergents to maintain appearance.

What's in the Box

A two-part Sikafloor-264 HC unit in the selected colour. Sika lists 20kg sets comprising 15.8kg A and 4.2kg B, and 10kg sets comprising 7.9kg A and 2.1kg B. This listing's colour options do not identify the supplied pack size, so confirm the unit size before ordering. Primers, quartz sand, Extender T and application tools are not listed as included.

Technical Information

• Shore D hardness: Approximately 76 after 7 days at +23°C, DIN 53505.
• Abrasion resistance: 41mg, CS10/1000/1000, after 7 days at +23°C, DIN 53109.
• Compressive strength: Approximately 53 N/mm²; flexural strength: Approximately 20 N/mm². Both tested after 28 days at +23°C with resin filled 1:0.9 with F36, EN 196-1.
• Tensile adhesion: Greater than 1.5 N/mm² with concrete failure, ISO 4624.
• Chemical resistance: Obtain Sika's specific resistance information for the intended exposure.
• Dry-heat resistance: +50°C permanent; +80°C for up to 7 days; +100°C for up to 12 hours. Occasional moist or wet heat up to +80°C is listed. Confirm all exposure conditions against the current Product Data Sheet.
• Pot life: Approximately 50 minutes at +10°C, 25 minutes at +20°C and 15 minutes at +30°C.
• Over Sikafloor-161 HC: wait 24 hours–3 days at +10°C, 12 hours–2 days at +20°C, or 8–24 hours at +30°C.
• Over Sikafloor-264 HC: wait 30 hours–3 days at +10°C, 24 hours–2 days at +20°C, or 16–24 hours at +30°C.
• Foot traffic/light traffic/full cure: approximately 72 hours/6 days/10 days at +10°C; 24 hours/4 days/7 days at +20°C; 18 hours/2 days/5 days at +30°C.
• Smooth roller system: 1–2 coats Sikafloor-161 HC at 0.35–0.55 kg/m² per coat, followed by 2 coats Sikafloor-264 HC at 0.3–0.5 kg/m² per coat.
• Textured roller system: the same primer build-up, followed by 1–2 coats Sikafloor-264 HC with 1% Extender T by weight at 0.5–0.8 kg/m² per coat.
• Approximately 4mm broadcast system: primer at 0.35–0.5 kg/m²; wearing course of 1 part Sikafloor-264 HC to 1 part 0.1–0.3mm quartz sand by weight at approximately 4 kg/m² combined; broadcast 0.4–0.7mm quartz sand at approximately 4–6 kg/m²; finish with 1–2 coats Sikafloor-264 HC at 0.6–0.8 kg/m² per coat.
• Consumption is theoretical and excludes porosity, profile, level variations and wastage. Working and curing times vary with site conditions.

Certificates

• Sika states conformity with LEED v4 EQ low-emitting-material requirements, not LEED product certification.
• VOC content: passes LEED v4.1 content requirements, Eurofins report 392-2022-10179006_XG_EN, June 2022.
• VOC emissions: passes CDPH, Eurofins report 392-2022-00179003_H_EN, May 2022.
• The reference also lists biological-resistance testing for Sikafloor-264 to ISO 846, CSM report 1008-533, May 2011. Confirm applicability to the supplied HC product before relying on this report.