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Cloud_Dancer's avatar
Cloud_Dancer
Explorer II
Apr 13, 2015

UPDATE..with?..More MH leaky roof info, photo & questions

It took me forever to find a waterproof tape that was suitable for part of my troubleshooting procedures (gave up on pressurizing the "box" and applying soapy water).
It turns out that some of the water was coming in at the lap joint that goes all the way around the top side(flat). Newmar did a substandard job on this lap joint. And, some water was coming in at the rear A/C gasket.
But, the hardest to find was the final place (this one took another forever to find). This was at the, what they call, M73 Insert Gutter Awning Rail. It should've been the first place to look, except that nothing about it told me water was leaking through that area. The way I found it was mostly out of desperation. After several months of taping up the many more-standard locations/places, waiting for rain, and still getting water inside the thin spongy foam layer that is bonded to/above the headliner material, I finally taped all of the insert gutter awning rail. And, we finally got enough rain to convince myself that there no more water coming in. No matter how much I squeegee the headliner, I find not a drop of water.
BTW I won't start on the permanent fix until I get a "dry-weather" forcast.

Hopefully one of the technicians can tell me if the factory lays down/installs putty tape or other sealant behind the M73 insert-gutter-awning rail prior to screwing it down. I don't want to start prying on it until I can find out more about the repair procedure.This is what mine looks like:




This is the access hole after removing the rearward-most surround sound speaker. It's where the water first started dripping:




This is the way I taped all the insert gutter awning rail area:

  • Sounds like a good plan...best of luck.

    The cost of new campers are so high these days you really have keep up with this stuff.

    With all the options on my camper no way would I trade it in or sell it, so that means keeping up on the maintenance.

    Any questions just ask..

    Ron W.

    Here is a link to a fellow that video the repair on YouTube.

    http://www.loveyourrv.com/resealing-rv-roof-eternabond-tape

    That's basically in the same camper as mine.
  • rjsurfer & Gjac,

    I had seen some of your postings, but at that time I was involved with some other projects. And, RV-wise, I was still trying to learn about roof air conditioning leaks/gaskets. I learned a lot about that, and now I'm learning more and more about the insert-gutter-awning leak problems.
    At this point, I'm leaning more towards a possible fix WITHOUT actually removing the IGA rail. The reason is that I too have thought much about how exactly the water comes into the inside ceiling area. I want to think that I too will find some screws that are almost completely rusted out, which would result in holes which lead directly from the gutter to the inside (at about the location/level of the ceiling/headliner).
    I've yet to remove the long rubber insert because I don't dare remove the tape and risk being expose during the next rain (it's forecast for tonight and for another 3 or 4 days).
    I too plan to replace ALL screws with stainless. As all of us have discovered, anywhere there might be a chance of moisture instrusion, you have to use stainless hardware. It's shameful that the manufacturers "cheap out" in this area.
    I believe that I will fill the holes with "gasket maker" goop and also dab some on the new screws prior to install. Also, I will clean the caulk line above the rail and use my favorite sealant there (3M 5200). I'm also considering putting a narrow line of sealant where the new insert slips into the lower groove. This is the point that is underwater during a hard rain (which keeps the gutter full during extended periods).
    Anyway, I will keep y'all posted (it'll be a while before I can get back to working on it).
    Thanks for all your information.
  • Gjac's avatar
    Gjac
    Explorer III
    I had this same problem a while back and posted about it. It dove me crazy for a year sealing every thing in site and it still leaked. If you remove the rail you will probably find the sealing tape in back of the rail which was not the problem. In my case the water was getting into the top channel where the vinyl cover is and running all the way forward to the front cap. The MH is parked on a slight incline. The water eventually rusted out some screws and some water enter through the holes. I replaced these screws with SS screws and recaulked the vinyl cover, and continue to check every year. I found the Geocell caulk to not crack and drys harder than the Dicor more adhesive like.
  • I had a leak in the very same area of the camper, definitely related to water getting behind the drip rail.

    Rather than pulling the entire drip rail off and resealing it from scratch I purchased a roll of 4" x 50' roll of Dicor sealing tape and layed it from the roof over and down the drip rail assembly, being careful not to go over the drip rail itself rendering it useless.

    Now my problem is how do I get the water out of the wall:-\

    Ron W.
  • Always refreshing to hear of someone figuring out a difficult problem. I recently was able to diagnose and repair a leak in my slideout. Congrats to you.
  • Water leaks are SOOO frustrating trying to find.

    As they say, there are 2 types of RVs:

    Those that have a leak and those that haven't leaked yet.

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