Answer
For epoxy floor recoating, scuff cured epoxy with 120 or 180 and clean thoroughly before the next coat.
Why it happens
Cured epoxy needs a clean scuffed surface when the recoat window has passed.
Recommended grit
Use 120 or 180 to scuff cured epoxy, then clean thoroughly before recoating.
Wet or dry
Dry with dust control.
Success check
The floor is evenly dull and clean before the next coat.
What to do
- Confirm the epoxy is cured enough to sand.
- Scuff the surface with 120 or 180.
- Vacuum and clean dust completely.
- Recoat according to the epoxy maker's instructions.
Avoid: Do not recoat glossy cured epoxy without proper prep.