Forum Discussion

MT_Pokets's avatar
MT_Pokets
Explorer
May 27, 2013

Can I use household caulk around RV windows?

I know you need a special caulk on many RV roofs, but I have to replace a window on the side of my Class C. Got the replacement window from the manufacturer, and I happen to have several tubes of household caulk (silicon base). Can I use them to do the job or do I need to get special RV caulk? Seems like everything that says RV on it costs twice as much as the regular stuff. Anyone with good advice on this??
Seeking Advice

17 Replies

Show More
  • Ranger_Smith's avatar
    Ranger_Smith
    Explorer
    May 28, 2013
    I would use nothing but the butyl tape around the window for that. I don't use silicone for anything except maybe around a shower.
  • jjj's avatar
    jjj
    Explorer
    May 28, 2013
    I think the putty tape is called Butyl tape. I have a roll of gray for just in case of repairs.
  • joy-rick's avatar
    joy-rick
    Explorer
    May 28, 2013
    I can't remember what it is called, but there is a special "putty" like material that you need to use to form a gasket between your new window and the body of the trailer.
  • 2oldman's avatar
    2oldman
    Explorer II
    May 28, 2013
    Silicone is not recommended because it's made for things that don't move.
  • abc40kids's avatar
    abc40kids
    Explorer
    May 27, 2013
    Might be fine, who knows but I would just use the Dicor made for rv caulk.
  • tvman44's avatar
    tvman44
    Explorer
    May 27, 2013
    Personally I will not use any silicone caulk on my RV. You will never get anything to stick to it again even more silicone. :)

About RV Tips & Tricks

Looking for advice before your next adventure? Look no further.25,149 PostsLatest Activity: Jul 17, 2025