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skippy94's avatar
skippy94
Explorer
Apr 05, 2014

Made the Mistake of Using Silcone Sealant on Roof Vent

Help! I made the BIG mistake of sealing our roof vent on our 94 pop up (Skippy) with silicone two years ago. I wish I would have read these boards then. Needless to say, it leaked. I have spent the past two days scraping the old caulk off the roof using many tools and even acetone.

I bought ProFlex RV sealant for when I finally get the silicone removed. There is still a very thin layer of the silicone so I know nothing will stick to it and fix the leak. I ordered last night McKanica® Silicone Caulk Remover Gel so I'm hoping that will help.

But here's my problem. I did an extra special good job with the silicone and basically covered all of the screws with sealant. I can't get the silicone out of the tops of the screws (where you use the screw driver). Should I replace all of the screws? Or will the pro flex stick to that area? I have also looked at Eternabond tape as well as the Pro Flex RV brushable sealant. This mom just doesn't want to have another leak.

Thank you!!!
  • Old-Biscuit wrote:
    NOTHING, even new silicone, will stick to an area where silicone has been used until ALL silicone residue has been removed with a silicone remover (solvent)

    ACE, Home Depot, Lowes etc. carry silicone removers

    Also......
    Dicor Self-leveling Sealant would be better choice for roof seams/vents etc. then ProFlex.
    ProFlex is great for vertical/sidewalls but the Self-Leveling works better on horizontal roof surface



    Let me look into the Dicor. Thanks for the idea.
  • midnightsadie wrote:
    I d try some on top of one of the screws give it three days to dry and try and pull it off.


    Great idea....i will give that a try after I use the remover. Thank you
  • NOTHING, even new silicone, will stick to an area where silicone has been used until ALL silicone residue has been removed with a silicone remover (solvent)

    ACE, Home Depot, Lowes etc. carry silicone removers

    Also......
    Dicor Self-leveling Sealant would be better choice for roof seams/vents etc. then ProFlex.
    ProFlex is great for vertical/sidewalls but the Self-Leveling works better on horizontal roof surface
  • I d try some on top of one of the screws give it three days to dry and try and pull it off.