• Hometalker
  • Homosassa, FL
Asked on Jan 12, 2019

How do I fix a rooftop leak in a motor home from seam of AC?

Lucy Marie BernierLisaSnowdiva


In other words,what can I use(product recommendation) for a leak in the seam of an AC unit,on top of motorhome?

3 answers
  • Snowdiva
    on Jan 12, 2019

    I'd go to Home depot or Lowes and tell them the they can help you.

  • Lisa
    on Jan 12, 2019

    Nora, some campgrounds have on staff maintenance departments that handle RV repairs. You can call one and see if they have a suggestion. My guess is you'll have to go on top of your RV to do the repair. There is a self-leveling sealant that you would put around the entire A/C unit (after removing the dried out old stuff and cleaning with alcohol). After you put the sealant, wet your finger and run it all around the edge between the roof and the A/C unit. Once it is dry, you will probably want to use the white tape (and again, I don't recall the name of the sealant or the tape, but I know they work well) all around the a/c where it meets the roof. This white tape is the same that campgrounds use when installing solid surface roofing over decks. It is definitely waterproof. But I still suggest you talk to an RV mechanic, as they can determine what you need exactly.

    • Nora
      on Jan 21, 2019

      Thanks Lisa,I will have to ask that mechanic,You do get what I am talkin about!and I am really short,so I will have to get a lighter person to get up on top! very helpful,thanks again.

  • Lucy Marie Bernier
    on Jan 15, 2019

    Need to find water source. Covering up could cause mold. Find the leak first the cover it up w/ bathroom caulking.

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