Pianotech

  • 1.  Remove Stains in Concrete

    Member
    Posted 13 days ago
      |   view attached
    Hello,

    I have a few stains in concrete (all in the same spot) from McLube 1725L/TFL-50 Dry sprays and Paraloid B-72 spills. I tried to let acetone set on the B-72 spills and scrub with a brush/soak up with a towel which I believe got rid of the B-72 but I think the white Teflon from the TFL-50 Dry is still showing.

    Any way to get this stuff out?

    Thanks



  • 2.  RE: Remove Stains in Concrete

    Posted 11 days ago

    McLube technical reps recommend toluene or MEK for cleaning. Both are pretty nasty stuff and I'm not sure how well it will get it out of concrete. I know toluene works well on B-72 as well. I would definitely wear gloves and a respirator mask with either. Acetone and MEK both break through nitrile very quickly, butyl is better. Toluene breaks through just about everything, but nitrile is best.

    It may be worth reaching out to McLube to see what they recommend.



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    Mathias Walters
    North Charleston SC
    (843) 619-7593
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  • 3.  RE: Remove Stains in Concrete

    Member
    Posted 11 days ago

    There are other safer products you can use. I believe the products listed  in Mathias's response are highly flammable. The stain is not that bad. You also want to wear eye protection, have good ventilation and toss out any rags and materials used to wipe up. Rags should be put outside on the grass spread out to allow the cleaner to evaporate. If left in a pile there is a danger of fire due to spontaneous combustion.

    I have special gloves used by the military that reach up to the elbow and prevent chemical  burns. Grainger may hav special  gloves  for spill cleanup or material applicatio



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    James Kelly
    Owner- Fur Elise Piano Service
    Pawleys Island SC
    (843) 325-4357
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