About Sika Sikafloor-269 CR

Sikafloor-269 CR sits at the top end of Sika’s flooring range because it is not simply a durable epoxy that happens to look clean, it is formulated from the resin up to meet cleanroom qualification. The two components, a filled resin (Part A) and a hardener (Part B), are supplied in a pre-batched 30 kg unit so the mix ratio is correct every time. Once combined and applied, the system flows out into a seamless, pore-free, glossy film that has no grout lines, no joints and no texture for particles or micro-organisms to lodge in. That seamlessness is the whole point: in a Grade A pharma line or an optics lab, the floor is a source of contamination unless it is engineered not to be, and this product is one of the few epoxies in India carrying independent cleanroom qualification to prove it.

For engineers and consultants specifying a facility, the appeal is that a single material solves two problems at once. It delivers the mechanical toughness expected of an industrial floor, high compressive and flexural strength, a hard Shore D surface and strong abrasion resistance, while also holding classified particle and outgassing performance. That means a warehouse-grade wearing course and a validated cleanroom finish come from the same tin, applied by the same crew, in the same pass. Space Arc supplies and applies Sikafloor-269 CR across Delhi NCR and pan-India, so the specification, the surface preparation and the installed result stay under one accountable roof rather than being split across an unfamiliar sub-contractor.

The technical insight

The performance comes from what Sika leaves out as much as what it puts in. Conventional epoxies rely on solvents and reactive diluents that keep off-gassing volatile organics and airborne molecular contaminants long after the floor looks cured, which is fatal in a cleanroom where those molecules settle on wafers, lenses or sterile product. Sikafloor-269 CR is a total-solids system, essentially no solvent, and is deliberately free of organo-phosphates and phthalates, so its VOC/AMC emission stays ultra-low from day one. The self-smoothing rheology then does the physical work: poured at a controlled thickness and back-rolled with a spiked roller, the resin levels into a continuous liquid-tight membrane with no capillary paths. The result is qualified to ISO 14644-1 Class 5 for particle emission and ISO 14644-8 class -9.6 for outgassing, and it also meets GMP Class A and LEED low-emitting-materials criteria. Because the cured film is dense and non-porous, spills, disinfectants and aggressive cleaning chemistry sit on the surface and wipe away rather than soaking in, which is what keeps a validated floor validated over years of decontamination cycles.

Where it is used

• Seamless flooring for pharmaceutical formulation, filling and packing suites requiring GMP Class A
• Optical and lens manufacturing where airborne particles ruin yield
• Medical-device assembly and sterile production areas
• Aerospace and satellite component assembly cleanrooms
• Precision automotive areas such as paint, electronics and sensor lines
• Semiconductor-adjacent and electronics assembly with contamination limits
• Controlled storage and warehousing for sensitive or sterile goods
• Hard-wearing course for general industrial areas that also need easy decontamination

Key advantages

• Independently qualified to ISO 14644-1 Class 5 (particles) and ISO 14644-8 class -9.6 (outgassing)
• Ultra-low VOC/AMC emission from a total-solids, solvent-free formulation
• Free of organo-phosphates and phthalates, reducing molecular contamination risk
• Seamless, pore-free, liquid-tight surface with no joints for dirt or microbes to collect
• High mechanical performance: strong compressive and flexural strength plus a hard Shore D surface
• Good abrasion resistance for a floor that also has to take traffic and trolleys
• Glossy, easily cleaned finish that withstands routine disinfection and decontamination
• Meets GMP Class A and contributes to LEED low-emitting-materials credit

Limitations & considerations

• Not a fast-track product: it needs a properly primed, sound and dry substrate, so surface preparation cannot be rushed
• Substrate moisture must be below 4% by weight and RH at or under 80%, ruling out damp or freshly cast slabs
• Application window is narrow, roughly +15C to +30C for both air and substrate, which matters on Indian sites without climate control
• Short working time means it must be spike-rolled within about 10 minutes of pouring, demanding a trained crew
• Epoxy chemistry can amber or gloss-shift under strong or prolonged UV, so it is an interior product
• As a premium cleanroom-grade system it carries a higher material cost than standard industrial epoxy where classification is not required

Selection & best practice

Specifications

Industry use cases

How we position Sika Sikafloor-269 CR

Within the Sika family, Sikafloor-269 CR is the cleanroom-qualified flagship; where a facility needs static-dissipative or conductive performance for electronics or ATEX zones, its sister product Sikafloor-269 ECF CR is the correct choice, and for a tough industrial floor that does not need cleanroom classification a standard grade such as Sikafloor-264 is far more cost-effective. Where a client is standardised on Fosroc, the genuine counterpart is Nitoflor SL2000, a flow-applied self-smoothing epoxy topping that covers the same seamless-industrial-floor need at a keener price point, though it is not a certified cleanroom system. Space Arc supplies all of these lines and will specify honestly based on whether the room actually needs cleanroom qualification or simply a durable, easy-clean epoxy floor.

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