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jbres's avatar
jbres
Explorer
Oct 06, 2014

question on cleaning old sealant before applying new

I found a few spots on my TT around windows and other sides that I need to go over with caulking. This is not the roof, sides only. What should I be using to clean the old caulk first before applying the new sealant? I am using "Proflex brand"
Thanks

15 Replies

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  • Victory402's avatar
    Victory402
    Explorer
    Oct 06, 2014
    Definitely remove the old caulk, especially if it's silicon. I had better results removing old caulk with alcohol based solvent than with mineral spirits.
  • majorgator's avatar
    majorgator
    Explorer
    Oct 06, 2014
    stickdog wrote:
    Get a caulk removal tool, remove old caulk, clean area with denatured alcohol, apply new caulk. Caulking over old caulk is like lipstick on a pig.

    ^^^^THIS^^^^
    Not that there's anything wrong with mineral spirits, but I prefer denatured alcohol because it cleans better and dries faster.
  • stickdog's avatar
    stickdog
    Explorer
    Oct 06, 2014
    Get a caulk removal tool, remove old caulk, clean area with denatured alcohol, apply new caulk. Caulking over old caulk is like lipstick on a pig.
  • WyoTraveler's avatar
    WyoTraveler
    Explorer
    Oct 06, 2014
    Like previous post said. I wiped mine down with minersl spirits let it dry couple of days then used Proflex. My MH is parked inside. It is starting to get almost too cold to caulk outside now. Needs some 60 degree drying time.
  • VegasBT's avatar
    VegasBT
    Explorer
    Oct 06, 2014
    Wipe it with a rag with some mineral spirits, and let it dry before applying the new sealant.

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