Full definition
Specialized flooring for controlled environments classified per ISO 14644 (ISO Class 1-8), where particle generation, chemical contamination, and electrostatic discharge must be minimized. Key requirements: (1) Low particle generation — the floor surface must not shed fibers or particles; homogeneous rubber or vinyl with smooth, sealed surface. (2) ESD control — conductive or static-dissipative (10⁶-10⁹ ohms per ANSI/ESD S7.1) to protect sensitive electronics and prevent particle attraction by static charge. (3) Seamless — heat-welded seams create a monolithic, impervious surface that prevents bacterial/particle harboring. (4) Chemical resistance — withstand aggressive cleanroom cleaning protocols (IPA, quaternary ammonium, hydrogen peroxide). (5) Easy to clean — smooth surface, no texture to trap particles. Materials: homogeneous rubber (Nora nTx — engineered for cleanroom, inherently conductive, no wax/polish required), conductive vinyl (widest color range), or ESD epoxy/PU coating (applied to existing slab). Installation: over moisture barrier on perfectly level concrete, fully welded seams. Per ISO 14644-1 (cleanroom classification), IEST-RP-CC006.3 (cleanroom testing), ANSI/ESD S20.20 (ESD program), and FDA/cGMP for pharmaceutical. Brands: Nora (market leader in cleanroom rubber), Gerflor, Forbo, Tarkett.