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Etching only benefits bare concrete floors. If you want to ensure that your new coating will adhere to your old coating, blend enough of the epoxy to cover a single square foot section, let it cure for a week, then check the adhesion by scoring a cross-hatch design in the new coating, put some Duct Tape across the scored area, then quickly pull up the tape. If the epoxy comes up, then you will have to remove the old coating prior to recoating the floor.

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βˆ™ 12y ago
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βˆ™ 11y ago

Almost every epoxy will need to be applied to an un-sealed floor, that is bare. It usually will also need to be etched.

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Q: Do you need to etch the existing epoxy floor before you apply the new epoxy paint?
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