How To Remove Spray Paint From Concrete Floor. A pressure washer is an efficient method that is used to remove spray paint from concrete. After removing as paint as you can with the paint scraper, use turps and pour directly onto the remaining paint residue.
After sweeping the area clean, try to chip away and loosen the paint by using a paint scraper or brush. After the absorbent solvents are active, it is effortless to clean the stain.
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Apply it to the stain and let it sit for 20 to 30 minutes. Apply paint stripper and wait.