A Working Reference for Specification-Grade Epoxy Selection
Facility managers operating institutional assets — manufacturing floors, pharmaceutical cleanrooms, logistics depots, food-processing zones — carry a specification burden that general contractors rarely appreciate. The wrong floor coating fails quietly at first: a hairline blister here, a chemical bloom there. By the time the failure registers in a maintenance log, remediation costs have compounded three times over. This guide exists to reduce that risk.
Epoxy GH has supplied and applied performance epoxy across Ghana’s institutional estate since 1981. Forty-five years of practice, delivered across pharmaceutical, industrial, hospitality, and public-sector facilities, have produced a working methodology. What follows distills that methodology into a practical specification framework.
Step One: Define the Performance Environment
Before a product specification is written, the facility manager must characterise the floor’s operating environment with precision. Four variables govern everything that follows:
- Chemical exposure — list every substance the floor will contact: acids, alkalis, solvents, disinfectants, fuel. Each has a different epoxy chemistry implication.
- Mechanical load — specify the heaviest wheeled or static load the floor will bear, and its frequency. Forklift traffic on a pharmaceutical dispatch floor demands a different build-up than foot traffic in a corporate lobby.
- Thermal cycling — floors adjacent to autoclaves, cold stores, or industrial ovens experience thermal stress that standard systems cannot absorb without micro-cracking.
- Hygiene standard — food-processing and pharmaceutical environments demand seamless, non-porous surfaces rated for repeated wet cleaning and chemical sanitisation.
Only when these four variables are documented in writing should a coating system be selected.
Step Two: Match the System to the Substrate
Epoxy performs to specification only on a substrate it can bond to. Concrete moisture content above 4% by weight will cause delamination regardless of product quality. Facility managers should require a quantified moisture vapour emission rate (MVER) reading before any specification is confirmed. Surface preparation — mechanical grinding to CSP 3 or above, per ICRI guidelines — is non-negotiable for Tier-1 institutional work. A coating applied over an unprimed or inadequately prepared surface is a warranty claim waiting to be submitted.
The primer system must be selected after substrate assessment, not before. Moisture-tolerant epoxy primers exist for Ghana’s humid-season conditions; specifying them where surface damp is probable is the correct institutional decision.
Step Three: Build the Specification in Layers
A performance epoxy specification is a system, not a product. The professional approach structures it in three functional layers:
- Primer course — penetrates and seals the concrete, establishes the bond plane, and mitigates residual moisture. Mil thickness and pot life should be specified explicitly.
- Body coat — carries the mechanical and chemical resistance profile. Specify compressive strength, Shore D hardness, and chemical resistance class by product data sheet reference.
- Topcoat or sealer — governs aesthetics, slip resistance (specify the pendulum test value required), UV stability where applicable, and ease of sanitisation.
Aggregate broadcast and anti-static additives are specified at the body-coat stage where the performance environment demands them. This is not a design decision — it is a safety and compliance decision.
Step Four: Require a Written Method Statement
Before work commences, require the applicator to submit a written method statement covering: substrate preparation method and equipment, application sequence and inter-coat intervals, ambient temperature and relative humidity limits for application, and cure and return-to-service timescales. A specification-grade applicator produces this document without being asked.
Walada-class institutional projects additionally specify independent adhesion pull-off testing at handover, with a minimum threshold of 1.5 N/mm² or greater, documented by a third-party inspector.
Specification Confidence, Built Over 45 Years
Since 1981, Epoxy GH has worked alongside facility managers, project managers, and independent specifiers on Ghana’s most demanding institutional floors. The performance environments encountered — pharmaceutical manufacturing, food-grade processing, cold-chain logistics, hospital theatres — have shaped a specification practice that tolerates no ambiguity.
For specification enquiries, site assessments, or product data sheet requests, contact the Epoxy GH technical team directly.
T: +233270000844 E: info@epoxygh.com