I have leaked a liquid mix of Spray Foam Sealant Dispensing Gun Cleaner and orange spray foam from a garbage bag onto a concrete floor, leaving an orange stain.

What's the easiest way to remove the colored stain?

  • Since it is outside you can try gasoline
    – Traveler
    Jan 23, 2023 at 16:32
  • 1
    @Ruskes "floor" indicates to me an indoor slab.
    – Huesmann
    Jan 24, 2023 at 13:27

2 Answers 2


Grind it off. Or paint over it. Solvents don't work once the stuff has cured.

  • would the stuff that's mixed with the sealant cleaner still "cure" Jan 23, 2023 at 16:38
  • 1
    Probably. Just slower and soaking in more.
    – keshlam
    Jan 23, 2023 at 16:43
  • The cleaner evaporates rapidly, so "mixed with the cleaner" is a very temporary situation. Once the product has cured, the cleaner won't touch it, and I doubt gasoline would either. Uncured, gasoline would work, but acetone (which is mostly what the cleaner is) works fine with less hazard.
    – Ecnerwal
    Jan 23, 2023 at 18:08
  • 1
    Take a torch to it, maybe?
    – Huesmann
    Jan 24, 2023 at 13:27

Try power sprayer, rent it or buy it.

I use gasoline to wash it off but that is no no for many

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.