Depends on the floors and the paint. Test a few patches with one of those big razor scrapers from Grainger to see if it'll do the job. Pressure washers with the least aggressive tip that'll remove the paint can work (I say least aggressive because a pressure washer with a zero tip can damage the concrete), but you risk a lot of potential splashing and would need to secure the room and equipment well. Either way, removing the paint will probably need to happen while production is shut down with a sanitation crew scheduled after the work each time.
I would be tempted to tape over the painted lines with the newer tape you're going to use.
Edited by jfrey123, 09 August 2024 - 04:37 AM.