Epoxyprimer Resin to Hardener Mixing Ratio Guide

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Achieving strong and long-lasting results when priming floors with Epoxyprimer starts with using the correct ratio of resin to hardener. This guide explains exactly how to measure and mix your components for reliable performance.

Mixing Ratio Explained

For Epoxyprimer, the ideal mixing ratio is 100 parts resin to 40 parts hardener by weight. Measuring by weight rather than volume ensures accuracy and helps the primer cure properly. Incorrect ratios can lead to sticky or brittle primed surfaces, so careful weighing is essential for stability and adhesion.

How to Measure and Mix

Weigh out 100g of resin and exactly 40g of hardener on a digital scale.
Combine both components in a clean container and stir until the mixture is completely uniform.
Apply the blended primer onto prepared concrete, timber, screeds, or ceramic tile surfaces using a roller, brush or spatula.

If you need a proven product, Epoxyprimer is specifically designed for this method of application, offering excellent adhesion and easy handling.

When Mixing Ratios Matter Most

Getting the ratio right is crucial before installing epoxy resin floors or coatings. A correctly prepared surface with optimally mixed primer leads to better bonding, enhanced durability and a smoother project finish—especially on porous or high-traffic areas.

Related guides

How Much Hardener Should Be Used With Penetrating Resin

Sticking to the recommended 100:40 resin to hardener ratio for Epoxyprimer maximises floor adhesion and longevity. For more guidance on resin blending and preparation, visit our parent FAQ.