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drew2fast's avatar
drew2fast
Explorer
Sep 18, 2017

Roof front seam repair 06 Jayflight

I bought a used 06 Jayco Jayflight 27BH and knew there was some previous water damage. There was dicor tape across the front seal, where the metal goes over the TPU roof. The repair looked OK at first but has gotten worse, so I'm trying to fix it. After pulling off the "dicor" tape, seems there were multiple attempts made to seal water leak.

Water has gotten under the metal and even the screws are rusted. The metal is no long being secured to the roof, except by the tons of sealant they have applied.

I was surprised there is no sealant between the metal and the TPO roof. There is tons of lap sealant all over, but none under the metal flap and where it's screw in place. I think I will need to drill new holes to secure it as the wood is probably rotten.

I only paid 7k, so I'm not spending thousands to fix it. If I can get 5-10 years out of it, I'll be happy. At some point it may get parked at a site and I'll just put a structure over the top.


So, on to repairs. I have purchased lap sealant, TPO cleaner, and 4" wide Dicor repair tap. The lap sealant and grey residue from repair tape is lot of work to remove. Any ideas to help get it off easy without damaging the roof membrane?

Any thoughts about putting the sealant between the metal and TPU roof where it's screwed down?

The following is google drive link to photos.
https://drive.google.com/open?id=0B_c_V3yd9h5hYXM3clJBUi1hMkU

22 Replies

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  • SoundGuy's avatar
    SoundGuy
    Explorer
    Sep 18, 2017
    drew2fast wrote:
    I bought a used 06 Jayco Jayflight 27BH and knew there was some previous water damage. There was dicor tape across the front seal, where the metal goes over the TPU roof.


    It's hard to understand why anyone would knowingly buy any trailer with such a deteriorated roof, no matter what price it may be, as a proper repair could entail removing the entire roof and starting all over again. :E I'd suspect that tape is Eternabond tape and as pointed out it's TPO (Thermoplastic Polyolefin), not TPU, whatever that may be. :@ For a couple of years around the time your trailer was built Jayco was using a version of TPO roof membrane that later was discovered to easily wick moisture because of the felt backing. This proved to be a major problem for Jayco which subsequently discontinued using this particular version of TPO. Doesn't help you of course, other than to point out that the damage below may be more extensive than you think, and as also already pointed out moisture leads to rot which leads to mold & mildew which creates an environment unhealthy to humans. Unfortunately you potentially have a major project on your hands, not a minor fix. :( Yours is a classic example why to never invest in any trailer with obvious signs of water leakage.
  • SidecarFlip's avatar
    SidecarFlip
    Explorer III
    Sep 18, 2017
    You'll know it's terminal when the ceiling falls down inside...and it will btw. It's TPO not TPU and if the original screws are rusted why do you think new screws will bite into anything"? probably all rotted away underneath.

    My issue is, rot = mold and mold = mold spores and mold spores = sick occupants. Some of that stuff growing up there, between the underlayment and the ceiling can kill you.

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