EN 1081 explained
EN 1081 specifies the test method for resistance to ground of resilient floor coverings. Resistance is measured in ohms between a metal plate placed on the floor surface and the building earth. Static dissipative: 10⁶–10⁹ Ω. Conductive: 10⁴–10⁶ Ω.
Static dissipative vs conductive
Static dissipative (SD) safely bleeds accumulated static charge to ground over a controlled period. Used in offices, ATS rooms, electronics assembly. Conductive provides a direct grounding path. Used in semiconductor handling, some OTs, fuel handling areas.
Applications
Data centres, server halls (SD), UPS/ATS rooms (often conductive). Hospitals: OTs supporting electrosurgical equipment, MRI control rooms, electronic medical equipment rooms. Electronics manufacturing, assembly lines, semiconductor handling. ATEX (explosive atmosphere), conductive mandatory.
Grounding strip installation
Copper grounding strip installed continuously around room perimeter, beneath the vinyl. Bonded to building earth at one point per room minimum. Larger rooms (>50 m²) bond at multiple points. Welding cord must be conductive grade (matched to floor).
Testing and verification
Post-installation: measure resistance to ground at 9 test points per ISO 14644-compatible methodology. Document test report (test points, readings, ambient humidity, ambient temperature). Annual re-test recommended.