About Sika Sikafloor MultiDur ES-20 AP

Sikafloor MultiDur ES-20 AP is Sika’s answer for facilities that need a resilient, low-maintenance resin floor without the cost and thickness of a heavy-duty screed. It is a defined system rather than a single tin: a Sikafloor-161 HC epoxy primer that seals and grips the substrate, followed by a Sikafloor-264 HC N self-smoothing epoxy topping laid at a nominal 2 mm. Poured and spread, the topping flows out under its own weight into a jointless, level surface, so there are no grout lines or coating overlaps to trap dirt, harbour bacteria or wear open under traffic.

The finished floor is built for the daily grind of working buildings. It resists abrasion from pallet trucks and forklifts, shrugs off cleaning chemicals and occasional spills, and stays impervious to water and most industrial fluids. The gloss surface reflects light well, which brightens warehouse and workshop interiors, and it wipes down quickly for hygiene-sensitive rooms. Available across the RAL colour range, it also lets specifiers zone areas, mark walkways or match a plant’s visual standards while keeping one continuous, monolithic finish underfoot.

The technical insight

The performance comes from the two-layer logic. The Sikafloor-161 HC primer is a low-viscosity epoxy that penetrates the open pores of a mechanically prepared substrate, displacing air and locking the topping to the concrete; this is why the system develops a tensile adhesion strength above 1.5 N/mm² with failure occurring in the concrete itself rather than at the bond line. On top, the Sikafloor-264 HC N is a quartz-filled, self-levelling epoxy: the graded aggregate gives the film its body and load-spreading capacity while the resin flows to a smooth plane. Cured, that matrix reaches roughly 53 N/mm² compressive and 20 N/mm² flexural strength with a Shore D hardness near 76, so it takes point loads and rolling traffic without cracking or denting. Abrasion loss of around 41 mg on the Taber test (CS 10/1000/1000) explains its long service life in trafficked halls. Because the whole build cures as a continuous thermoset with no joints, there is no weak plane for liquids to exploit, which is what makes it genuinely liquid-proof rather than merely water-repellent.

Where it is used

• Storage and assembly halls handling palletised goods and rolling loads
• Clean rooms and controlled environments needing a seamless, wipe-clean floor
• Pharmaceutical and food-processing zones with strict hygiene requirements
• Sanitary areas, canteens and wash-down spaces exposed to standing water
• Maintenance workshops and engineering bays subject to oil and tool traffic
• Garages and vehicle service areas requiring abrasion and fluid resistance
• Loading ramps and dock areas under repeated forklift movement
• General light-to-medium industrial units upgrading tired concrete floors

Key advantages

• Seamless, jointless finish with no lines to trap dirt or wear open
• Self-smoothing topping flows level, giving a smooth 2 mm gloss surface
• Liquid-proof and impervious to water, cleaning agents and most spills
• Good chemical and mechanical resistance for working environments
• High abrasion resistance suited to forklift and pallet-truck traffic
• Easy to clean and maintain, supporting hygiene-critical operations
• Wide RAL colour range for zoning, safety marking or brand matching
• Supplied as a matched primer-plus-topping system, removing guesswork on compatibility

Limitations & considerations

• At 2 mm it suits medium to heavy foot and trolley traffic, not the extreme point loads of a heavy-duty industrial screed
• Epoxy topcoats can chalk, yellow or lose gloss under prolonged direct UV, so it is intended for interior use
• Requires mechanical surface preparation to a CSP-3 to CSP-4 profile; a simply swept or acid-etched floor will not bond reliably
• Substrate must be sound (minimum 25 N/mm² compressive, 1.5 N/mm² pull-off) and dry to around 4% moisture, or the system can debond
• Application is confined to +10 C to +35 C, up to 80% RH and a minimum 3 C above dew point, which can constrain winter or humid-season work
• Being a rigid epoxy, it does not bridge moving or structural cracks without a separate detailing approach

Selection & best practice

Specifications

Industry use cases

How we position Sika Sikafloor MultiDur ES-20 AP

Sikafloor MultiDur ES-20 AP sits in the middle of Sika’s dry-area flooring range: heavier and more robust than a simple roller-applied epoxy coating, yet lighter and more economical than the thick, high-strength MultiDur screeds specified for extreme forklift loads. Within the Sika family, step up to a thicker MultiDur system or an ESD-controlled variant where static dissipation or very heavy traffic is the driver, or pair it with Sikafloor curing and joint-sealing products for a complete floor package. Where a project standardises on Fosroc, the Nitoflor self-smoothing range is the natural equivalent. Space Arc carries all of these lines, so we can specify the right system for your loading, chemistry and budget rather than pushing a single brand.

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