About Fosroc Nitoflor Epoxy SL

Nitoflor Epoxy SL is Fosroc’s flow-applied, self-levelling epoxy flooring system for areas where a hard-wearing, hygienic and genuinely seamless floor matters more than a decorative coat of paint. Supplied as a two-part, solvent-free resin, it is mixed on site and poured onto a primed concrete substrate at a nominal 2-3 mm build. Once spread and rolled, the material flows out under its own weight to a smooth, glass-like finish that masks small trowel marks and surface irregularities in the slab beneath. The result is a jointless, non-porous surface that resists food acids, cleaning agents and oils, and that can be washed down and kept clean with far less effort than tiled or bare-concrete floors.

For Indian food processing units, dairies, pharma production halls and process industries, that combination is the whole point: no grout lines to harbour bacteria, no porous concrete to soak up spills, and enough film thickness to take forklift and trolley traffic without breaking down. As an authorised Fosroc distributor and applicator, Space Arc Engineering supplies the material and, where required, installs it through trained flooring crews across Delhi NCR and Pan-India. Because a self-levelling floor is only as good as the slab and the primer under it, we treat surface preparation, priming and slab flatness as part of the job rather than an afterthought.

The technical insight

A self-levelling epoxy works because the mixed resin has a viscosity low enough to flow and a surface tension that pulls it toward a level plane, yet a pot life long enough to be spread and de-aerated before it gels. That is why the crew pours, spreads to gauge with a notched trowel or squeegee, then passes a spiked roller back and forth: the trowel sets the thickness, and the spikes release entrained air so the film can self-level into one continuous membrane instead of trapping pinholes. The cured system develops its strength from the epoxy’s dense cross-linked network, which is what gives a laboratory-tested compressive strength above 67 N/mm2 (ASTM C579), flexural strength above 25 N/mm2 and a tightly bonded, non-porous surface. Two things govern whether that chemistry actually performs on site. First, the bond: the floor is only as strong as its grip on the slab, so a solvent-based epoxy primer (Nitoprime 25) is scrubbed in first to soak into the concrete and give the topping something to key to, achieving pull-off adhesion above 3 N/mm2. Second, moisture: epoxy will not tolerate a slab that is damp or rising in relative humidity, because water at the interface blisters and debonds the film. Keeping substrate moisture below about 5% and relative humidity under 75% is not a nicety; it is what keeps the floor stuck down for years.

Where it is used

• Seamless hygienic floors in food and beverage processing and packaging halls
• Dairy and cold-process areas where wash-down and spillage are constant
• Pharmaceutical and healthcare production floors needing a cleanable, non-porous finish
• Laboratory and clean-room flooring where dust and contamination must be minimised
• Warehouse, distribution and light-industrial floors carrying trolley and forklift traffic
• Refurbishment of worn or dusting concrete floors that need a durable new surface
• Areas requiring an anti-slip finish via aggregate broadcast into the wet topping
• General industrial workshops needing chemical and abrasion resistance

Key advantages

• Self-levels to a smooth, gloss finish that hides minor slab irregularities
• Seamless and non-porous, so there are no joints or pores to trap dirt or bacteria
• Solvent-free and low-odour, suitable for enclosed and food-contact environments
• High laboratory compressive strength (>67 N/mm2, ASTM C579) with good impact resistance
• Good resistance to food acids, cleaning chemicals and oils in service
• Fast return to use: foot traffic typically at 24 hours, vehicular at 48 hours
• Available in a range of colours for zoning and demarcation
• Optional anti-slip aggregate can be broadcast in for wet or ramped areas

Limitations & considerations

• Not for damp or rising-damp slabs; substrate moisture must stay under ~5% and RH under 75%
• Should not be applied below 10 C or above 45 C, and slab temperature is best kept under 30-35 C during laying
• Needs a flat, sound substrate (FM2 / TR34 or better); depressions over 5-10 mm must be pre-filled first
• Not suitable over asphalt, weak or friable concrete, unbonded screeds, or PVC tile/sheet
• Being epoxy, colours can shade-change slightly under strong UV or long-term adverse exposure
• Requires proper priming and specialist application; a poorly prepared slab will undermine the whole floor

Selection & best practice

Specifications

Industry use cases

How we position Fosroc Nitoflor Epoxy SL

Nitoflor Epoxy SL sits in the middle of Fosroc’s flooring range: thicker and tougher than a rolled coating, but lighter-duty than a heavy epoxy screed. Where you only need a thin protective, chemical-resistant film over sound concrete rather than a 2-3 mm build, Fosroc Nitoflor FC150 is the more economical high-build coating. For heavy forklift traffic, thermal shock or aggressive chemical loads, a thicker Fosroc floor topping or an epoxy/PU screed system is the better call, and we are happy to advise. A complete floor also needs the supporting Fosroc products around it, the Nitoprime epoxy primer, Nitoflor Sol for tool cleaning, and compatible joint sealants for any movement joints carried through the slab. Alongside Fosroc, Space Arc also supplies Sika, MC-Bauchemie and Master Builders Solutions flooring systems, so if a project spec calls for a particular brand or a PU rather than epoxy, we can match the requirement rather than force-fit one product.

Related Industrial Flooring products

View all Industrial Flooring products →