Forum Discussion

wopachop's avatar
wopachop
Explorer
Feb 16, 2020

What to clean old lap sealant with besides denatured alcohol

Found out last night you cant buy denatured alcohol anymore in my area. Even amazon wont ship it.

Acetone seems so strong. Go with IPA instead? Or maybe a cleaner like SPRAY 9?
  • wopachop wrote:
    Found out last night you cant buy denatured alcohol anymore in my area. Even amazon wont ship it.

    Acetone seems so strong. Go with IPA instead? Or maybe a cleaner like SPRAY 9?


    Nonsense. Amazon sells and ships featured alcohol.
  • Cool deal. Not a fan of mineral spirits. Trying to think up a good reason why. I want to say it leaves a film behind. I have a full can of the stuff in my truck.
  • Lynnmor wrote:
    JimK-NY wrote:
    Paint thinner does a better job of cleaning and removing old caulking. As a final step before recoating, I do use 91% alcohol.

    Yes, that paint thinner would be mineral spirits.

    Mineral spirits (paint thinner is what old guys call it).:)
  • I have used Denatured Alcohol and Mineral Spirits. I prefer Mineral Spirits; I feel it cleaned better with less effort.

    -Michael
  • The instructions say to use mineral spirits and it does a good job without breaking it down. You can then go right over the area with more Dicor.
  • JimK-NY wrote:
    Paint thinner does a better job of cleaning and removing old caulking. As a final step before recoating, I do use 91% alcohol.

    Yes, that paint thinner would be mineral spirits.
  • Paint thinner does a better job of cleaning and removing old caulking. As a final step before recoating, I do use 91% alcohol.
  • Dicor has a couple videos on YouTube. They recommended denatured alcohol for final prep.

    I love the stuff for applying silicone caulking. Guess will have to switch over to IPA.
  • Whoa! Go to the nearest pharmacy and buy isopropyl alcohol. Get the 91% not the 70% alcohol. Denatured (ie, 95% ethyl alcohol 5% gasoline) even if available is a bad idea for rubber roofs anyway. Every pharmacy carries isopropyl alcohol. It is sold as rubbing alcohol and for sterilization of medical equipment.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,193 PostsLatest Activity: Jan 27, 2025