Electronics Assembly ESD Cleanroom — Airport Industrial Accra
Electronics assembly cleanroom commission requiring 1600 sqm IEC 61340-5-1 conductive epoxy with continuity-tested grounding network. Industrial Floors Ghana installed copper grounding network, conductive primer, conductive topcoat, and full IEC 61340-5-1 commissioning documentation.
Project Profile
| Field | Detail |
|---|---|
| Sector | Semiconductor & Electronics Cleanroom |
| Location | Airport Industrial Zone, Accra |
| Scale | 3,200 m² |
| Scope | ESD-dissipative epoxy flooring, FM3 superflat subfloor preparation, ASTM F1869 moisture remediation, cleanroom-grade joint detailing |
| Timeline | 14 weeks from subfloor assessment to certified handover |
The commission originated from a Tier-1 electronics assembly operator establishing a precision manufacturing facility within the Airport Industrial corridor. The facility’s production mandate — high-sensitivity circuit board assembly and component staging — required a floor specification that most Ghanaian contractors decline to tender.
Specification Challenge
Electronics assembly environments impose a flooring discipline that lies beyond ordinary industrial practice. The facility specified full ESD (electrostatic dissipative) compliance throughout the production floor, with surface resistance values held within a defined ohmic window — too conductive and personnel safety is compromised; too resistive and static charges accumulate, destroying sensitive components.
Simultaneous to the ESD requirement, the operator’s racking and automated guided vehicle (AGV) logistics demanded FM3 superflat tolerance across the full 3,200 m² — with no localised high spots exceeding DIN 18202 Table 3 tolerances. The existing subfloor slab presented two compounding problems: elevated moisture vapour emission at 7.4 lbs/1,000 ft²/24 hr on ASTM F1869 testing, and a surface regularity profile that was unacceptable for cleanroom-grade finish application.
Resolving both conditions concurrently — without extending the client’s commissioning window — required sequenced specialist intervention rather than a single-trade solution.
Approach
Industrial Floors Ghana mobilised a phased methodology anchored in 51 years of industrial subfloor practice.
Phase 1 — Moisture Remediation: A two-component epoxy moisture barrier rated to suppress vapour emission to below 3 lbs/1,000 ft²/24 hr was applied across the full slab, with perimeter detailing sealed to wall upstands.
Phase 2 — FM3 Superflat Grinding and Levelling: Laser-profilometry scans mapped 214 deviation points across the slab. Diamond-head grinding and pour-in levelling compound were applied in sequence, with a second laser sweep confirming DIN 18202 Table 3 compliance before proceeding.
Phase 3 — ESD-Dissipative Epoxy System: A three-coat ESD epoxy stack was installed — conductive primer, dissipative mid-coat, and a cleanroom-grade sealed topcoat — with copper earthing tape grid laid to manufacturer earthing specifications. Surface resistance was tested at 24 grid points per IEC 61340-4-1.
Phase 4 — Joint Detailing and Certification: Construction joints were routed and filled with flexible polyurethane to maintain ESD continuity across joints. A full laser-measured flatness report and ESD compliance certificate were issued at handover.
Outcome
- Moisture vapour emission reduced from 7.4 to 2.1 lbs/1,000 ft²/24 hr — within specification
- FM3 superflat tolerance achieved across 100% of surveyed measurement bays
- ESD surface resistance confirmed within 1×10⁵ to 1×10⁹ Ω at all 24 test points
- Facility commissioned on schedule with zero flooring-related production delays
What This Project Demonstrates
Electronics assembly and semiconductor cleanroom environments represent the most technically exacting floor specification category in Ghanaian industrial construction. This project establishes a repeatable delivery framework — moisture remediation, FM3 flatness correction, and ESD system installation — executed within a single coordinated programme. As Airport City and its industrial periphery attract further precision manufacturing investment, the specification discipline demonstrated here positions Industrial Floors Ghana as the reference contractor for cleanroom-grade floor commissions in Ghana.
Built to FM2/FM3 — measured, certified, signed.