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Most people notice the finished floor.

Very few think about what lies beneath it.

In an antistatic (ESD) epoxy flooring system, the primer is more than just the first coat applied to concrete. It forms an important part of the electrical pathway that allows static electricity to be safely dissipated to earth.

Without a properly designed conductive foundation, even a high-performance antistatic floor may not deliver consistent electrical performance.

Why Static Electricity Needs to Be Controlled

Static electricity is generated every day by people walking, equipment moving and materials rubbing against each other.

In many industrial environments, an uncontrolled static discharge can:

• Damage sensitive electronic components
• Interrupt manufacturing processes
• Affect the performance of precision equipment
• Attract dust in clean environments
• Create unwanted electrical discharge around sensitive installations

Antistatic flooring systems are designed to control this charge by allowing it to dissipate safely at a controlled rate.

An Antistatic Floor Is a Complete System

A common misconception is that only the final floor coating makes a floor antistatic.

In reality, every layer contributes to the overall performance of the system.

A typical installation includes:

• A properly prepared concrete substrate
• A conductive primer
• Copper earthing tape connected to ground
• An antistatic epoxy coating or self-leveling floor
• Proper earthing and testing after installation

Each layer has a specific role, and together they provide a continuous path for static electricity to dissipate safely.

Introducing MR. JO Primer – AS

MR. JO Primer – AS is a conductive epoxy primer developed for use beneath antistatic epoxy flooring systems.

Unlike conventional primers that are intended only to improve adhesion, Primer AS also contributes to the conductive foundation required for controlled static dissipation.

Its black appearance is a natural characteristic of the conductive system and helps create the base for the antistatic flooring layers that follow.

Installation Considerations

For optimum performance, the conductive primer should be applied over a properly prepared concrete substrate as recommended for the flooring system.

Primer AS is a high-build conductive material and is typically applied using a putty knife to achieve a uniform film.

After curing, a light abrasion is recommended before applying subsequent conductive layers. This removes any resin-rich surface film that may reduce contact between conductive layers and helps achieve more consistent electrical continuity throughout the system.

Copper earthing tape is incorporated into the flooring system and connected to the building’s earthing network, allowing static charges collected by the floor to dissipate safely.

Modern Antistatic Floors Don’t Have to Be Black

Early conductive flooring systems often limited designers to dark finishes.

Advances in conductive technology now allow antistatic epoxy floors to be supplied in a wide range of colours while maintaining the controlled electrical performance required for demanding industrial environments.

This means facilities no longer have to choose between appearance and performance.

Typical Applications

MR. JO Primer – AS is suitable for use beneath antistatic flooring systems in:

• Electronics manufacturing
• Data centres and server rooms
• Pharmaceutical facilities
• Laboratories
• Cleanrooms
• Battery manufacturing
• Precision assembly areas
• Control rooms
• Industrial facilities requiring electrostatic control

Good Engineering Still Matters

Conductive primers are only one part of a successful antistatic flooring installation.

Proper surface preparation, correct grounding, compatible flooring materials and appropriate installation practices all contribute to the long-term performance of the system.

A conductive primer cannot compensate for poor workmanship, but when used correctly it provides the reliable conductive foundation that an antistatic flooring system depends upon.

Final Thoughts

Antistatic flooring is more than a coloured epoxy floor with special properties.

It is an engineered system in which every layer plays a role in controlling static electricity safely and reliably.

MR. JO Primer – AS has been developed to provide that conductive foundation, supporting modern coloured antistatic flooring systems while helping deliver the electrical performance required in today’s sensitive industrial environments.