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Which method is better to prepare your concrete for an epoxy coating :

Use a concrete grinder or wash the floor with acid?

Every professional flooring applicator I know swears by concrete grinding and believes that acid etching, also called acid washing, is a technique that should only be used by DIY enthusiasts.

We have seen countless coatings that have failed as a result of acid etching but we’ve also seen coatings that have failed after grinding, even though there are significantly fewer grinding failures.

So one dreary day during COVID lockdown we decided to show you the difference between grinding and acid washing on the same floor, at the same time. We think the results speak for themselves.

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