Sika Sikafloor-262 AS N
A two-part, carbon-fibre-loaded self-smoothing epoxy that drains static charge to earth, giving electronics, pharma and ATEX facilities a seamless conductive floor rated below 10⁹ ohm.
What is it?
A two-component, self-smoothing epoxy wearing course carrying an embedded carbon-fibre network that makes the finished floor electrically conductive and static-dissipative.
Where is it used?
ESD-sensitive and explosion-risk areas: electronics and EV/battery assembly, data centres, pharmaceutical production, and ATEX-classified zones handling flammable dust or vapour.
Why use it?
It holds resistance-to-ground below 10⁹ ohm (typically 10⁵–10⁶ ohm) so static charge bleeds safely to earth, protecting components and preventing ignition sources, while giving a hard, seamless, cleanable surface.
How is it applied?
Primed substrate is fitted with a copper earthing grid, a conductive primer is laid, then the mixed resin is poured and spike-rolled to a self-levelling ~1.5 mm film that cures to a semi-gloss finish.
About Sika Sikafloor-262 AS N
Sikafloor-262 AS N is Sika’s conductive, self-smoothing epoxy wearing course built for spaces where uncontrolled static electricity is a genuine hazard. Unlike a standard epoxy topping, it carries a network of carbon fibres dispersed through the resin. Once the floor is tied into a properly installed copper earthing grid, that fibre network gives every point on the surface a low, predictable path to ground. The finished floor measures a resistance-to-ground (Rg) below 10⁹ ohm, and in practice typically sits in the 10⁵–10⁶ ohm band when tested to IEC 61340-4-1. That performance is what lets it satisfy ATEX 153 requirements for potentially explosive atmospheres.
Beyond its electrical job, it behaves like a serious industrial floor. Poured at roughly 1.5 mm, it self-levels into a liquid-tight, seamless monolithic surface with a semi-gloss finish that is easy to sweep, wash and decontaminate. Cured strengths of around 80 MPa in compression and 40 MPa in flexure, plus a Shore D hardness near 77, mean it stands up to foot traffic, trolleys and light plant. Because the conductive path and the wearing surface are one and the same system, there are no separate conductive tapes or top-coats to wear through, which is a common failure point in cheaper anti-static build-ups. For Space Arc’s clients across Delhi NCR and pan-India, it is the specification of choice where electronics, batteries or solvents share a floor.
The technical insight
The mechanism is percolation, not coating. Carbon fibres are blended into the epoxy at a loading high enough that the fibres physically touch each other throughout the cured film, forming a continuous conductive lattice from the surface down to the conductive primer and the copper earthing tapes below. Any static charge that builds on the floor — from a moving trolley wheel, a person, or a plastic tote — finds this lattice and drains to earth in milliseconds instead of accumulating until it discharges as a spark. Because the fibres are distributed in three dimensions rather than printed as a surface layer, abrasion that wears the top of the film simply exposes more conductive fibre underneath, so the earthing performance is durable rather than sacrificial. The trade-off, and the reason exact colour matching is not possible, is that the visible carbon fibres tint and speckle the finish; you specify this floor for its resistance value first and its shade second.
Where it is used
- Electronics manufacturing, SMT lines and assembly halls where ESD damages sensitive components
- EV and lithium battery assembly and charging rooms with ignition-risk atmospheres
- Data centres and server halls needing controlled static and a cleanable surface
- Pharmaceutical and fine-chemical production areas handling combustible powders
- ATEX-classified zones and solvent-handling areas requiring documented earthing
- Aircraft hangars and MRO bays where fuel vapour and static must be managed
- Explosives and ammunition storage or handling magazines
- High-value warehousing and picking areas with heavy trolley movement
Key advantages
- Resistance-to-ground held below 10⁹ ohm (typically 10⁵–10⁶ ohm) to IEC 61340-4-1
- Meets ATEX 153 requirements for potentially explosive atmospheres
- Conductive path is built through the film, so earthing survives surface wear
- Seamless, liquid-tight monolithic surface with no joints to harbour contamination
- Robust mechanical performance: ~80 MPa compressive, ~40 MPa flexural, ~77 Shore D
- Semi-gloss finish that is easy to clean, decontaminate and maintain
- Self-smoothing pour gives a fast, even application over large floor areas
- Single integrated system replaces separate conductive tapes and top-coats
Limitations & considerations
- Exact colour matching is not possible; the carbon fibres speckle and shift the shade
- Conductivity depends entirely on a correctly installed copper earthing grid and conductive primer — the resin alone will not earth a floor
- Short pot life (~15 min at 30°C) demands trained applicators and disciplined batching
- Application window is tight: substrate and air between +10°C and +30°C, humidity ≤80% RH, and substrate at least 3°C above dew point
- Requires periodic resistance testing to verify the floor still meets its ESD/ATEX rating in service
- As an epoxy it can yellow or gloss-change under strong UV, so it suits interior use
Selection & best practice
Success is decided below the resin. The concrete must be sound, dry and mechanically prepared (shot-blasting is preferred) with tensile strength adequate for the load. Install the copper earthing tape grid and connect it to the building earth before any resin goes down, then apply Sika’s conductive primer so the wearing course has a continuous path to ground — skipping or short-cutting this step is the most common reason an ESD floor fails its test. Mix strictly at 84:16 by weight, add filler as specified for the ambient temperature, and only batch what the crew can lay within pot life. Pour, spread to ~1.5 mm and spike-roll to release air and level the film. Protect the fresh floor from traffic until foot-hard (roughly 16 hours at 30°C), and allow full cure (about 5–7 days) before heavy loading. Finally, commission the floor with resistance-to-ground measurements to IEC 61340-4-1 and keep the certificate on record for ATEX compliance.
Specifications
| Product type | Two-part conductive self-smoothing epoxy wearing course |
| Electrostatic behaviour | Resistance to ground Rg < 10⁹ ohm (typically 10⁵–10⁶ ohm), IEC 61340-4-1 |
| Compliance | Fulfils ATEX 153 for potentially explosive atmospheres |
| Mixing ratio (A:B) | 84 : 16 by weight |
| Layer thickness | ~1.5 mm |
| Compressive / flexural strength | ~80 MPa (EN ISO 604) / ~40 MPa (EN ISO 178), 28 days |
| Shore D hardness | ~77 (EN ISO 868) |
| Abrasion resistance | ~100 mg (CS10 / 1000 g / 1000 cycles) |
| Pack size | 25 kg ready-to-mix unit (Part A 21 kg + Part B 4 kg) |
Industry use cases
Electronics & Semiconductors
SMT and PCB assembly halls where a single static discharge can destroy sensitive ICs; the floor keeps operators, benches and trolleys at a controlled potential.
EV & Battery Manufacturing
Cell assembly lines and charging rooms where static combined with electrolyte vapour is an ignition risk — the ATEX-rated earthing removes the spark source.
Pharmaceutical Production
Powder-handling and blending areas where combustible dust demands a conductive, seamless, easily decontaminated floor for both safety and hygiene.
Data Centres
Server and equipment halls needing controlled static plus a hard, dust-free, wipe-clean surface under raised-floor and rack loads.
Defence & Explosives
Ordnance and propellant handling magazines where documented resistance-to-ground is a mandatory control against static initiation.
Frequently asked questions
What resistance to ground does Sikafloor-262 AS N achieve?
Is the resin conductive on its own, or do I need an earthing grid?
What thickness and coverage should I plan for?
Can I get it in a specific colour to match our facility?
How soon can the floor be used after laying?
How is the ESD performance verified and maintained?
How we position Sika Sikafloor-262 AS N
Within Sika’s own conductive flooring family, Sikafloor-262 AS N is the general-purpose self-smoothing choice; where a thixotropic, trowel-grade version is needed for slopes or textured finishes, the Sikafloor-262 AS N Thixo variant covers the same electrical spec. Space Arc positions it as the specification-grade ATEX floor and pairs it with the appropriate Sika conductive primer and Sika earthing components to complete a compliant system. For clients standardising on Fosroc, the closest equivalent in our range is Fosroc Nitoflor SL Conductive; for lighter-duty static-dissipative needs rather than full conductive/ATEX performance, we also advise on dissipative-grade alternatives across our Sika and Fosroc lines.
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