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Applying the right amount of primer is crucial for achieving a strong, long-lasting resin floor. If you’re preparing a 70 sq m area, careful primer calculation and substrate assessment will ensure proper adhesion and finish.
Primer Coverage for 70 sq m
The recommended usage for epoxy floor primers is typically between 100–300 g/m². The amount you require depends on the porosity and texture of the surface—more absorbent or rougher substrates will need more product. For a 70 sq m project, this equates to:
- Minimum (100 g/m²): 7 kg primer
- Average (200 g/m²): 14 kg primer
- Maximum (300 g/m²): 21 kg primer
For smoother, less porous concrete, you can usually plan closer to the minimum. Old, pitted, or very absorbent floors may require amounts toward the upper end of the range.


Assessing Your Surface
The substrate plays a key role in how much primer you’ll need. Concrete, screeds, ceramic tiles, timber, and similar surfaces all benefit from a primer such as Epoxyprimer. Before priming, ensure surfaces are clean, dry, and free of dust or grease to get the most out of your primer and avoid costly reapplication.
Practical Application Advice
Primer should be applied evenly using a roller, brush, or spatula. Pay extra attention to particularly absorbent spots or patch repairs, as these may soak up more product. Let the primer cure fully (typically 24–48 hours) before applying your resin or decorative layer for the best results.

When This Matters
Getting your primer quantity right is especially important on large surfaces or older floors where absorption is unpredictable. Over-order if you suspect your substrate might be particularly porous, as running out mid-job can disrupt your entire project timeline.
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Estimating the correct primer quantity sets the foundation for any successful resin flooring project. For those looking to calculate resin usage or material selection for 70 sq m and beyond, our main advice hub offers in-depth guidance for every stage.
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