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3.5 mm, self-levelling, low-emission, crack-bridging, epoxy flooring system with with broadcast antislip surface and single-color gloss finish
Industrial flooring system for indoor and outdoor applications and horizontal surfaces, suitable for medium to heavy-duty in moderate to high traffic areas, with very high chemical resistance, crack-bridging properties and functional aesthetics
General industry, chemical industry, agricultural facilities, wastewater treatment, biogas plants, and secondary containments
| Layer | Description | Material | Consumption | |
|---|---|---|---|---|
 | Substrate | Concrete / cementitious screed | ||
| 1 |  | Primer | KÖSTER CT 121 filled at a ratio 1 : 0.2 by weight with Quartz Sand 0.06–0.36 mm (CT 483) or similar. | 0.40 kg/m² (0.32 resin + 0.08 filler) |
| 2 |  | Basecoat | KÖSTER CT 228 Flex | 1.60 kg/m² |
| 3 |  | Broadcast to excess | Quartz Sand 0.4–0.8 mm (CT 488) or similar | 4.00 kg/m² (broadcast to excess, approx. 5 kg/m² applied) |
| 4 |  | Topcoat | KÖSTER CT 228 Flex | 0.80 kg/m² |
Comments
| Material | Substrate conditions | Application conditions | Mixing regime | Application tools | Pot life / Recoating interval / Ready for traffic | |
|---|---|---|---|---|---|---|
| Concrete / cementitious screed | ||||||
| 1 | KÖSTER CT 121 filled at a ratio 1 : 0.2 by weight with Quartz Sand 0.06–0.36 mm (CT 483) or similar. | ICRI CSP 3–5 (depending on the expected traffic) by shot blasting or previously primed, scratchcoated, sandbroadcasted or coated surface. Clean, sound and visible dry Tensile strength > 1.5 N/mm² Substrate relative humidity: < 4 % CM Device | Material temperature 15–25 °C Substrate and ambient temperature 8–30 °C Substrate and material temperatures must be ≥ 3 °C above dew point during application and for 12 h. | Electric single or double paddle mixer (300–400 rpm) Mix for 2 min Transfer to a clean container Add filler Mix for an additional 1 min and scrape the sides | Rubber Squeegee 40 cm (CT 922 002) Resin Roller 25 cm (CT 961 002) Resin Roller 10 cm (CT 913 001) | Pot life: 60 min. Recoating interval: 10 °C: 24 - 72 h 20 °C: 18 - 48 h 30 °C: 12 - 48 h |
| 2 | KÖSTER CT 228 Flex | Previously primed, scratchcoated, sandbroadcast or coated surface. Clean, sound and visible dry Tensile strength > 1.5 N/mm² Substrate relative humidity: < 4 % CM Device | Material temperature 15–25 °C Substrate and ambient temperature 10–30 °C Substrate and material temperatures must be ≥ 3 °C above dew point during application and for 12 h. | Electric single paddle mixer (300–400 rpm) Mix for 2 min Transfer to a clean container Mix for an additional 1 min and scrape the sides | Notched Trowel S6 (CT 932 001) (optionally) Loop Roller 25 cm (CT 911 001) | Pot life: 40 min. Recoating interval: 10 °C: 24 - 36 h 20 °C: 18 - 24 h 30 °C: 12 - 24 h |
| 3 | Quartz Sand 0.4–0.8 mm (CT 488) or similar | |||||
| 4 | KÖSTER CT 228 Flex | Previously primed, scratchcoated, sandbroadcast or coated surface. Clean, sound and visible dry Tensile strength > 1.5 N/mm² Substrate relative humidity: < 4 % CM Device | Material temperature 15–25 °C Substrate and ambient temperature 10–30 °C Substrate and material temperatures must be ≥ 3 °C above dew point during application and for 12 h. | Electric single paddle mixer (300–400 rpm) Mix for 2 min Transfer to a clean container Mix for an additional 1 min and scrape the sides | Rubber Squeegee 40 cm (CT 922 002) Resin Roller 25 cm (CT 961 002) Resin Roller 10 cm (CT 913 001) | Pot life: 40 min. Recoating interval: 10 °C: 24 - 36 h 20 °C: 18 - 24 h 30 °C: 12 - 24 h Ready for light traffic (hours) / fully cured (days): 10 °C: 72 h / 7 d 20 °C: 48 h / 5 d 30 °C: 24 h / 3 d |
